]> arthur.barton.de Git - netdata.git/blobdiff - src/health.c
allow netdata to be easily relocatable
[netdata.git] / src / health.c
index cdfe314933d13b2cf46918eb1c2c15018d16ad56..9df2e241fe9619406c2a3a45138866dbd22765e7 100644 (file)
@@ -11,9 +11,9 @@ struct health_options {
 };
 
 static struct health_options health = {
-    .health_default_exec = PLUGINS_DIR "/alarm-notify.sh",
+    .health_default_exec = NULL,
     .health_default_recipient = "root",
-    .log_filename = VARLIB_DIR "/health/alarm_log.db",
+    .log_filename = NULL,
     .log_entries_written = 0,
     .log_fp = NULL
 };
@@ -141,13 +141,12 @@ static inline void health_alarm_log_save(RRDHOST *host, ALARM_ENTRY *ae) {
 
 static inline ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char *filename) {
     static uint32_t max_unique_id = 0, max_alarm_id = 0;
-    ssize_t loaded = -1, updated = -1, errored = -1, duplicate = -1;
 
     errno = 0;
 
     char *s, *buf = mallocz(65536 + 1);
     size_t line = 0, len = 0;
-    loaded = updated = errored = duplicate = 0;
+    ssize_t loaded = 0, updated = 0, errored = 0, duplicate = 0;
 
     pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
 
@@ -252,44 +251,50 @@ static inline ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char
             ae->exec_run_timestamp      = (uint32_t)strtoul(pointers[11], NULL, 16);
             ae->delay_up_to_timestamp   = (uint32_t)strtoul(pointers[12], NULL, 16);
 
-            if(unlikely(ae->name)) freez(ae->name);
+            freez(ae->name);
             ae->name = strdupz(pointers[13]);
             ae->hash_name = simple_hash(ae->name);
 
-            if(unlikely(ae->chart)) freez(ae->chart);
+            freez(ae->chart);
             ae->chart = strdupz(pointers[14]);
             ae->hash_chart = simple_hash(ae->chart);
 
-            if(unlikely(ae->family)) freez(ae->family);
+            freez(ae->family);
             ae->family = strdupz(pointers[15]);
 
-            if(unlikely(ae->exec)) freez(ae->exec);
+            freez(ae->exec);
             ae->exec = strdupz(pointers[16]);
             if(!*ae->exec) { freez(ae->exec); ae->exec = NULL; }
 
-            if(unlikely(ae->recipient)) freez(ae->recipient);
+            freez(ae->recipient);
             ae->recipient = strdupz(pointers[17]);
             if(!*ae->recipient) { freez(ae->recipient); ae->recipient = NULL; }
 
-            if(unlikely(ae->source)) freez(ae->source);
+            freez(ae->source);
             ae->source = strdupz(pointers[18]);
             if(!*ae->source) { freez(ae->source); ae->source = NULL; }
 
-            if(unlikely(ae->units)) freez(ae->units);
+            freez(ae->units);
             ae->units = strdupz(pointers[19]);
             if(!*ae->units) { freez(ae->units); ae->units = NULL; }
 
-            if(unlikely(ae->info)) freez(ae->info);
+            freez(ae->info);
             ae->info = strdupz(pointers[20]);
             if(!*ae->info) { freez(ae->info); ae->info = NULL; }
 
-            ae->exec_code   = atoi(pointers[21]);
-            ae->new_status  = atoi(pointers[22]);
-            ae->old_status  = atoi(pointers[23]);
-            ae->delay       = atoi(pointers[24]);
+            ae->exec_code   = str2i(pointers[21]);
+            ae->new_status  = str2i(pointers[22]);
+            ae->old_status  = str2i(pointers[23]);
+            ae->delay       = str2i(pointers[24]);
 
-            ae->new_value   = strtold(pointers[25], NULL);
-            ae->old_value   = strtold(pointers[26], NULL);
+            ae->new_value   = str2l(pointers[25]);
+            ae->old_value   = str2l(pointers[26]);
+
+            static char value_string[100 + 1];
+            freez(ae->old_value_string);
+            freez(ae->new_value_string);
+            ae->old_value_string = strdupz(format_value_and_unit(value_string, 100, ae->old_value, ae->units, -1));
+            ae->new_value_string = strdupz(format_value_and_unit(value_string, 100, ae->new_value, ae->units, -1));
 
             // add it to host if not already there
             if(unlikely(*pointers[0] == 'A')) {
@@ -315,8 +320,8 @@ static inline ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char
 
     freez(buf);
 
-    if(!max_unique_id) max_unique_id = (uint32_t)time(NULL);
-    if(!max_alarm_id)  max_alarm_id  = (uint32_t)time(NULL);
+    if(!max_unique_id) max_unique_id = (uint32_t)now_realtime_sec();
+    if(!max_alarm_id)  max_alarm_id  = (uint32_t)now_realtime_sec();
 
     host->health_log.next_log_id = max_unique_id + 1;
     host->health_log.next_alarm_id = max_alarm_id + 1;
@@ -354,17 +359,26 @@ static inline void health_alarm_log_load(RRDHOST *host) {
 // ----------------------------------------------------------------------------
 // health alarm log management
 
-static inline void health_alarm_log(RRDHOST *host,
-                uint32_t alarm_id, uint32_t alarm_event_id,
-                time_t when,
-                const char *name, const char *chart, const char *family,
-                const char *exec, const char *recipient, time_t duration,
-                calculated_number old_value, calculated_number new_value,
-                int old_status, int new_status,
-                const char *source,
-                const char *units,
-                const char *info,
-                int delay
+static inline void health_alarm_log(
+        RRDHOST *host,
+        uint32_t alarm_id,
+        uint32_t alarm_event_id,
+        time_t when,
+        const char *name,
+        const char *chart,
+        const char *family,
+        const char *exec,
+        const char *recipient,
+        time_t duration,
+        calculated_number old_value,
+        calculated_number new_value,
+        int old_status,
+        int new_status,
+        const char *source,
+        const char *units,
+        const char *info,
+        int delay,
+        uint32_t flags
 ) {
     debug(D_HEALTH, "Health adding alarm log entry with id: %u", host->health_log.next_log_id);
 
@@ -392,12 +406,19 @@ static inline void health_alarm_log(RRDHOST *host,
     ae->when = when;
     ae->old_value = old_value;
     ae->new_value = new_value;
+
+    static char value_string[100 + 1];
+    ae->old_value_string = strdupz(format_value_and_unit(value_string, 100, ae->old_value, ae->units, -1));
+    ae->new_value_string = strdupz(format_value_and_unit(value_string, 100, ae->new_value, ae->units, -1));
+
     ae->old_status = old_status;
     ae->new_status = new_status;
     ae->duration = duration;
     ae->delay = delay;
     ae->delay_up_to_timestamp = when + delay;
 
+    ae->flags |= flags;
+
     if(ae->old_status == RRDCALC_STATUS_WARNING || ae->old_status == RRDCALC_STATUS_CRITICAL)
         ae->non_clear_duration += ae->duration;
 
@@ -486,14 +507,17 @@ static inline void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv) {
 
     if(!rv) return;
 
-    if(tree)
-        rrdvar_index_del(tree, rv);
+    if(tree) {
+        debug(D_VARIABLES, "Deleting variable '%s'", rv->name);
+        if(unlikely(!rrdvar_index_del(tree, rv)))
+            error("Attempted to delete variable '%s' from host '%s', but it is not found.", rv->name, host->hostname);
+    }
 
     freez(rv->name);
     freez(rv);
 }
 
-static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, int type, calculated_number *value) {
+static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, int type, void *value) {
     char *variable = strdupz(name);
     rrdvar_fix_name(variable);
     uint32_t hash = simple_hash(variable);
@@ -518,6 +542,8 @@ static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *
             debug(D_VARIABLES, "Variable '%s' created in scope '%s'", variable, scope);
     }
     else {
+        debug(D_VARIABLES, "Variable '%s' is already found in scope '%s'.", variable, scope);
+
         // already exists
         freez(variable);
 
@@ -529,11 +555,70 @@ static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *
     return rv;
 }
 
+// ----------------------------------------------------------------------------
+// CUSTOM VARIABLES
+
+RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name) {
+    calculated_number *v = callocz(1, sizeof(calculated_number));
+    *v = NAN;
+    RRDVAR *rv = rrdvar_create_and_index("host", &host->variables_root_index, name, RRDVAR_TYPE_CALCULATED_ALLOCATED, v);
+    if(unlikely(!rv)) {
+        free(v);
+        error("Requested variable '%s' already exists - possibly 2 plugins will be updating it at the same time", name);
+
+        char *variable = strdupz(name);
+        rrdvar_fix_name(variable);
+        uint32_t hash = simple_hash(variable);
+
+        rv = rrdvar_index_find(&host->variables_root_index, variable, hash);
+    }
+
+    return rv;
+}
+
+void rrdvar_custom_host_variable_destroy(RRDHOST *host, const char *name) {
+    char *variable = strdupz(name);
+    rrdvar_fix_name(variable);
+    uint32_t hash = simple_hash(variable);
+
+    RRDVAR *rv = rrdvar_index_find(&host->variables_root_index, variable, hash);
+    freez(variable);
+
+    if(!rv) {
+        error("Attempted to remove variable '%s' from host '%s', but it does not exist.", name, host->hostname);
+        return;
+    }
+
+    if(rv->type != RRDVAR_TYPE_CALCULATED_ALLOCATED) {
+        error("Attempted to remove variable '%s' from host '%s', but it does not a custom allocated variable.", name, host->hostname);
+        return;
+    }
+
+    if(!rrdvar_index_del(&host->variables_root_index, rv)) {
+        error("Attempted to remove variable '%s' from host '%s', but it cannot be found.", name, host->hostname);
+        return;
+    }
+
+    freez(rv->name);
+    freez(rv->value);
+    freez(rv);
+}
+
+void rrdvar_custom_host_variable_set(RRDVAR *rv, calculated_number value) {
+    if(rv->type != RRDVAR_TYPE_CALCULATED_ALLOCATED)
+        error("requested to set variable '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom one.", rv->name, value);
+    else {
+        calculated_number *v = rv->value;
+        *v = value;
+    }
+}
+
 // ----------------------------------------------------------------------------
 // RRDVAR lookup
 
-calculated_number rrdvar2number(RRDVAR *rv) {
+static calculated_number rrdvar2number(RRDVAR *rv) {
     switch(rv->type) {
+        case RRDVAR_TYPE_CALCULATED_ALLOCATED:
         case RRDVAR_TYPE_CALCULATED: {
             calculated_number *n = (calculated_number *)rv->value;
             return *n;
@@ -565,11 +650,6 @@ calculated_number rrdvar2number(RRDVAR *rv) {
     }
 }
 
-void dump_variable(void *data) {
-    RRDVAR *rv = (RRDVAR *)data;
-    debug(D_HEALTH, "%50s : %20.5Lf", rv->name, rrdvar2number(rv));
-}
-
 int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result) {
     RRDSET *st = rc->rrdset;
     RRDVAR *rv;
@@ -594,217 +674,196 @@ int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, cal
         return 1;
     }
 
-    debug(D_HEALTH, "Available local chart '%s' variables:", st->id);
-    avl_traverse_lock(&st->variables_root_index, dump_variable);
-
-    debug(D_HEALTH, "Available family '%s' variables:", st->rrdfamily->family);
-    avl_traverse_lock(&st->rrdfamily->variables_root_index, dump_variable);
-
-    debug(D_HEALTH, "Available host '%s' variables:", st->rrdhost->hostname);
-    avl_traverse_lock(&st->rrdhost->variables_root_index, dump_variable);
-
     return 0;
 }
 
 // ----------------------------------------------------------------------------
-// RRDSETVAR management
-
-RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, int type, void *value, uint32_t options) {
-    debug(D_VARIABLES, "RRDVARSET create for chart id '%s' name '%s' with variable name '%s'", st->id, st->name, variable);
-    RRDSETVAR *rs = (RRDSETVAR *)callocz(1, sizeof(RRDSETVAR));
-
-    char buffer[RRDVAR_MAX_LENGTH + 1];
-    snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, variable);
-    rs->fullid = strdupz(buffer);
+// RRDVAR to JSON
 
-    snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, variable);
-    rs->fullname = strdupz(buffer);
+struct variable2json_helper {
+    BUFFER *buf;
+    size_t counter;
+};
 
-    rs->variable = strdupz(variable);
+static int single_variable2json(void *entry, void *data) {
+    struct variable2json_helper *helper = (struct variable2json_helper *)data;
+    RRDVAR *rv = (RRDVAR *)entry;
+    calculated_number value = rrdvar2number(rv);
 
-    rs->type = type;
-    rs->value = value;
-    rs->options = options;
-    rs->rrdset = st;
+    if(unlikely(isnan(value) || isinf(value)))
+        buffer_sprintf(helper->buf, "%s\n\t\t\"%s\": null", helper->counter?",":"", rv->name);
+    else
+        buffer_sprintf(helper->buf, "%s\n\t\t\"%s\": %0.5Lf", helper->counter?",":"", rv->name, (long double)value);
 
-    rs->local       = rrdvar_create_and_index("local",  &st->variables_root_index, rs->variable, rs->type, rs->value);
-    rs->family      = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullid, rs->type, rs->value);
-    rs->host        = rrdvar_create_and_index("host",   &st->rrdhost->variables_root_index, rs->fullid, rs->type, rs->value);
-    rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value);
-    rs->host_name   = rrdvar_create_and_index("host",   &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value);
+    helper->counter++;
 
-    rs->next = st->variables;
-    st->variables = rs;
-
-    return rs;
+    return 0;
 }
 
-void rrdsetvar_rename_all(RRDSET *st) {
-    debug(D_VARIABLES, "RRDSETVAR rename for chart id '%s' name '%s'", st->id, st->name);
-
-    // only these 2 can change name
-    // rs->family_name
-    // rs->host_name
-
-    char buffer[RRDVAR_MAX_LENGTH + 1];
-    RRDSETVAR *rs, *next = st->variables;
-    while((rs = next)) {
-        next = rs->next;
-
-        snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable);
-
-        if (strcmp(buffer, rs->fullname)) {
-            // name changed
-            rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
-            rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name);
-
-            freez(rs->fullname);
-            rs->fullname = strdupz(st->name);
-            rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value);
-            rs->host_name   = rrdvar_create_and_index("host",   &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value);
-        }
-    }
-
-    rrdsetcalc_link_matching(st);
+void health_api_v1_chart_variables2json(RRDSET *st, BUFFER *buf) {
+    struct variable2json_helper helper = {
+            .buf = buf,
+            .counter = 0
+    };
+
+    buffer_sprintf(buf, "{\n\t\"chart\": \"%s\",\n\t\"chart_name\": \"%s\",\n\t\"chart_context\": \"%s\",\n\t\"chart_variables\": {", st->id, st->name, st->context);
+    avl_traverse_lock(&st->variables_root_index, single_variable2json, (void *)&helper);
+    buffer_sprintf(buf, "\n\t},\n\t\"family\": \"%s\",\n\t\"family_variables\": {", st->family);
+    helper.counter = 0;
+    avl_traverse_lock(&st->rrdfamily->variables_root_index, single_variable2json, (void *)&helper);
+    buffer_sprintf(buf, "\n\t},\n\t\"host\": \"%s\",\n\t\"host_variables\": {", st->rrdhost->hostname);
+    helper.counter = 0;
+    avl_traverse_lock(&st->rrdhost->variables_root_index, single_variable2json, (void *)&helper);
+    buffer_strcat(buf, "\n\t}\n}\n");
 }
 
-void rrdsetvar_free(RRDSETVAR *rs) {
-    RRDSET *st = rs->rrdset;
-    debug(D_VARIABLES, "RRDSETVAR free for chart id '%s' name '%s', variable '%s'", st->id, st->name, rs->variable);
-
-    rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local);
-    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family);
-    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host);
-    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
-    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name);
-
-    if(st->variables == rs) {
-        st->variables = rs->next;
-    }
-    else {
-        RRDSETVAR *t;
-        for (t = st->variables; t && t->next != rs; t = t->next);
-        if(!t) error("RRDSETVAR '%s' not found in chart '%s' variables linked list", rs->fullname, st->id);
-        else t->next = rs->next;
-    }
-
-    freez(rs->fullid);
-    freez(rs->fullname);
-    freez(rs->variable);
-    freez(rs);
-}
 
 // ----------------------------------------------------------------------------
 // RRDDIMVAR management
+// DIMENSION VARIABLES
 
 #define RRDDIMVAR_ID_MAX 1024
 
-static inline void rrddimvar_free_instances(RRDDIMVAR *rs) {
+static inline void rrddimvar_free_variables(RRDDIMVAR *rs) {
     RRDDIM *rd = rs->rrddim;
     RRDSET *st = rd->rrdset;
 
-    rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_id);
-    rs->local_id = NULL;
+    // CHART VARIABLES FOR THIS DIMENSION
+
+    rrdvar_free(st->rrdhost, &st->variables_root_index, rs->var_local_id);
+    rs->var_local_id = NULL;
 
-    rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name);
-    rs->local_name = NULL;
+    rrdvar_free(st->rrdhost, &st->variables_root_index, rs->var_local_name);
+    rs->var_local_name = NULL;
 
-    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_id);
-    rs->family_id = NULL;
+    // FAMILY VARIABLES FOR THIS DIMENSION
 
-    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
-    rs->family_name = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_id);
+    rs->var_family_id = NULL;
 
-    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_contextid);
-    rs->family_contextid = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_name);
+    rs->var_family_name = NULL;
 
-    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_contextname);
-    rs->family_contextname = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_contextid);
+    rs->var_family_contextid = NULL;
 
-    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidid);
-    rs->host_fullidid = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_contextname);
+    rs->var_family_contextname = NULL;
 
-    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname);
-    rs->host_fullidname = NULL;
+    // HOST VARIABLES FOR THIS DIMENSION
 
-    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid);
-    rs->host_fullnameid = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartidid);
+    rs->var_host_chartidid = NULL;
 
-    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename);
-    rs->host_fullnamename = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartidname);
+    rs->var_host_chartidname = NULL;
 
-    freez(rs->id);
-    rs->id = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartnameid);
+    rs->var_host_chartnameid = NULL;
 
-    freez(rs->name);
-    rs->name = NULL;
+    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartnamename);
+    rs->var_host_chartnamename = NULL;
 
-    freez(rs->fullidid);
-    rs->fullidid = NULL;
+    // KEYS
 
-    freez(rs->fullidname);
-    rs->fullidname = NULL;
+    freez(rs->key_id);
+    rs->key_id = NULL;
 
-    freez(rs->contextid);
-    rs->contextid = NULL;
+    freez(rs->key_name);
+    rs->key_name = NULL;
 
-    freez(rs->contextname);
-    rs->contextname = NULL;
+    freez(rs->key_fullidid);
+    rs->key_fullidid = NULL;
 
-    freez(rs->fullnameid);
-    rs->fullnameid = NULL;
+    freez(rs->key_fullidname);
+    rs->key_fullidname = NULL;
 
-    freez(rs->fullnamename);
-    rs->fullnamename = NULL;
+    freez(rs->key_contextid);
+    rs->key_contextid = NULL;
+
+    freez(rs->key_contextname);
+    rs->key_contextname = NULL;
+
+    freez(rs->key_fullnameid);
+    rs->key_fullnameid = NULL;
+
+    freez(rs->key_fullnamename);
+    rs->key_fullnamename = NULL;
 }
 
-static inline void rrddimvar_create_instances(RRDDIMVAR *rs) {
-    rrddimvar_free_instances(rs);
+static inline void rrddimvar_create_variables(RRDDIMVAR *rs) {
+    rrddimvar_free_variables(rs);
 
     RRDDIM *rd = rs->rrddim;
     RRDSET *st = rd->rrdset;
 
     char buffer[RRDDIMVAR_ID_MAX + 1];
 
+    // KEYS
+
     snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->id, rs->suffix);
-    rs->id = strdupz(buffer);
+    rs->key_id = strdupz(buffer);
 
     snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix);
-    rs->name = strdupz(buffer);
-
-    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->id);
-    rs->fullidid = strdupz(buffer);
-
-    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->name);
-    rs->fullidname = strdupz(buffer);
-
-    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->context, rs->id);
-    rs->contextid = strdupz(buffer);
-
-    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->context, rs->name);
-    rs->contextname = strdupz(buffer);
-
-    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->id);
-    rs->fullnameid = strdupz(buffer);
-
-    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->name);
-    rs->fullnamename = strdupz(buffer);
-
-    rs->local_id           = rrdvar_create_and_index("local", &st->variables_root_index, rs->id, rs->type, rs->value);
-    rs->local_name         = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value);
-
-    rs->family_id          = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->id, rs->type, rs->value);
-    rs->family_name        = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->name, rs->type, rs->value);
-    rs->family_contextid   = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->contextid, rs->type, rs->value);
-    rs->family_contextname = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->contextname, rs->type, rs->value);
-
-    rs->host_fullidid      = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidid, rs->type, rs->value);
-    rs->host_fullidname    = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidname, rs->type, rs->value);
-    rs->host_fullnameid    = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnameid, rs->type, rs->value);
-    rs->host_fullnamename  = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnamename, rs->type, rs->value);
+    rs->key_name = strdupz(buffer);
+
+    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->key_id);
+    rs->key_fullidid = strdupz(buffer);
+
+    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->key_name);
+    rs->key_fullidname = strdupz(buffer);
+
+    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->context, rs->key_id);
+    rs->key_contextid = strdupz(buffer);
+
+    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->context, rs->key_name);
+    rs->key_contextname = strdupz(buffer);
+
+    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->key_id);
+    rs->key_fullnameid = strdupz(buffer);
+
+    snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->key_name);
+    rs->key_fullnamename = strdupz(buffer);
+
+    // CHART VARIABLES FOR THIS DIMENSION
+    // -----------------------------------
+    //
+    // dimensions are available as:
+    // - $id
+    // - $name
+
+    rs->var_local_id           = rrdvar_create_and_index("local", &st->variables_root_index, rs->key_id, rs->type, rs->value);
+    rs->var_local_name         = rrdvar_create_and_index("local", &st->variables_root_index, rs->key_name, rs->type, rs->value);
+
+    // FAMILY VARIABLES FOR THIS DIMENSION
+    // -----------------------------------
+    //
+    // dimensions are available as:
+    // - $id                 (only the first, when multiple overlap)
+    // - $name               (only the first, when multiple overlap)
+    // - $chart-context.id
+    // - $chart-context.name
+
+    rs->var_family_id          = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_id, rs->type, rs->value);
+    rs->var_family_name        = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_name, rs->type, rs->value);
+    rs->var_family_contextid   = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_contextid, rs->type, rs->value);
+    rs->var_family_contextname = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_contextname, rs->type, rs->value);
+
+    // HOST VARIABLES FOR THIS DIMENSION
+    // -----------------------------------
+    //
+    // dimensions are available as:
+    // - $chart-id.id
+    // - $chart-id.name
+    // - $chart-name.id
+    // - $chart-name.name
+
+    rs->var_host_chartidid      = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullidid, rs->type, rs->value);
+    rs->var_host_chartidname    = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullidname, rs->type, rs->value);
+    rs->var_host_chartnameid    = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullnameid, rs->type, rs->value);
+    rs->var_host_chartnamename  = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullnamename, rs->type, rs->value);
 }
 
-
 RRDDIMVAR *rrddimvar_create(RRDDIM *rd, int type, const char *prefix, const char *suffix, void *value, uint32_t options) {
     RRDSET *st = rd->rrdset;
 
@@ -826,7 +885,7 @@ RRDDIMVAR *rrddimvar_create(RRDDIM *rd, int type, const char *prefix, const char
     rs->next = rd->variables;
     rd->variables = rs;
 
-    rrddimvar_create_instances(rs);
+    rrddimvar_create_variables(rs);
 
     return rs;
 }
@@ -838,9 +897,7 @@ void rrddimvar_rename_all(RRDDIM *rd) {
     RRDDIMVAR *rs, *next = rd->variables;
     while((rs = next)) {
         next = rs->next;
-
-        if (strcmp(rd->name, rs->name))
-            rrddimvar_create_instances(rs);
+        rrddimvar_create_variables(rs);
     }
 }
 
@@ -849,7 +906,7 @@ void rrddimvar_free(RRDDIMVAR *rs) {
     RRDSET *st = rd->rrdset;
     debug(D_VARIABLES, "RRDDIMSET free for chart id '%s' name '%s', dimension id '%s', name '%s', prefix='%s', suffix='%s'", st->id, st->name, rd->id, rd->name, rs->prefix, rs->suffix);
 
-    rrddimvar_free_instances(rs);
+    rrddimvar_free_variables(rs);
 
     if(rd->variables == rs) {
         debug(D_VARIABLES, "RRDDIMSET removing first entry for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
@@ -859,7 +916,7 @@ void rrddimvar_free(RRDDIMVAR *rs) {
         debug(D_VARIABLES, "RRDDIMSET removing non-first entry for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
         RRDDIMVAR *t;
         for (t = rd->variables; t && t->next != rs; t = t->next) ;
-        if(!t) error("RRDDIMVAR '%s' not found in dimension '%s/%s' variables linked list", rs->name, st->id, rd->id);
+        if(!t) error("RRDDIMVAR '%s' not found in dimension '%s/%s' variables linked list", rs->key_name, st->id, rd->id);
         else t->next = rs->next;
     }
 
@@ -868,10 +925,127 @@ void rrddimvar_free(RRDDIMVAR *rs) {
     freez(rs);
 }
 
+// ----------------------------------------------------------------------------
+// RRDSETVAR management
+// CHART VARIABLES
+
+static inline void rrdsetvar_free_variables(RRDSETVAR *rs) {
+    RRDSET *st = rs->rrdset;
+
+    // CHART
+
+    rrdvar_free(st->rrdhost, &st->variables_root_index, rs->var_local);
+    rs->var_local = NULL;
+
+    // FAMILY
+
+    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family);
+    rs->var_family = NULL;
+
+    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host);
+    rs->var_host = NULL;
+
+    // HOST
+
+    rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_name);
+    rs->var_family_name = NULL;
+
+    rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_name);
+    rs->var_host_name = NULL;
+
+    // KEYS
+
+    freez(rs->key_fullid);
+    rs->key_fullid = NULL;
+
+    freez(rs->key_fullname);
+    rs->key_fullname = NULL;
+}
+
+static inline void rrdsetvar_create_variables(RRDSETVAR *rs) {
+    rrdsetvar_free_variables(rs);
+
+    RRDSET *st = rs->rrdset;
+
+    // KEYS
+
+    char buffer[RRDVAR_MAX_LENGTH + 1];
+    snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, rs->variable);
+    rs->key_fullid = strdupz(buffer);
+
+    snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable);
+    rs->key_fullname = strdupz(buffer);
+
+    // CHART
+
+    rs->var_local       = rrdvar_create_and_index("local",  &st->variables_root_index,               rs->variable, rs->type, rs->value);
+
+    // FAMILY
+
+    rs->var_family      = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index,    rs->key_fullid,   rs->type, rs->value);
+    rs->var_family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index,    rs->key_fullname, rs->type, rs->value);
+
+    // HOST
+
+    rs->var_host        = rrdvar_create_and_index("host",   &st->rrdhost->variables_root_index,      rs->key_fullid,   rs->type, rs->value);
+    rs->var_host_name   = rrdvar_create_and_index("host",   &st->rrdhost->variables_root_index,      rs->key_fullname, rs->type, rs->value);
+
+}
+
+RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, int type, void *value, uint32_t options) {
+    debug(D_VARIABLES, "RRDVARSET create for chart id '%s' name '%s' with variable name '%s'", st->id, st->name, variable);
+    RRDSETVAR *rs = (RRDSETVAR *)callocz(1, sizeof(RRDSETVAR));
+
+    rs->variable = strdupz(variable);
+    rs->type = type;
+    rs->value = value;
+    rs->options = options;
+    rs->rrdset = st;
+
+    rs->next = st->variables;
+    st->variables = rs;
+
+    rrdsetvar_create_variables(rs);
+
+    return rs;
+}
+
+void rrdsetvar_rename_all(RRDSET *st) {
+    debug(D_VARIABLES, "RRDSETVAR rename for chart id '%s' name '%s'", st->id, st->name);
+
+    RRDSETVAR *rs, *next = st->variables;
+    while((rs = next)) {
+        next = rs->next;
+        rrdsetvar_create_variables(rs);
+    }
+
+    rrdsetcalc_link_matching(st);
+}
+
+void rrdsetvar_free(RRDSETVAR *rs) {
+    RRDSET *st = rs->rrdset;
+    debug(D_VARIABLES, "RRDSETVAR free for chart id '%s' name '%s', variable '%s'", st->id, st->name, rs->variable);
+
+    if(st->variables == rs) {
+        st->variables = rs->next;
+    }
+    else {
+        RRDSETVAR *t;
+        for (t = st->variables; t && t->next != rs; t = t->next);
+        if(!t) error("RRDSETVAR '%s' not found in chart '%s' variables linked list", rs->key_fullname, st->id);
+        else t->next = rs->next;
+    }
+
+    rrdsetvar_free_variables(rs);
+
+    freez(rs->variable);
+    freez(rs);
+}
+
 // ----------------------------------------------------------------------------
 // RRDCALC management
 
-static inline const char *rrdcalc_status2string(int status) {
+inline const char *rrdcalc_status2string(int status) {
     switch(status) {
         case RRDCALC_STATUS_REMOVED:
             return "REMOVED";
@@ -903,7 +1077,7 @@ static inline const char *rrdcalc_status2string(int status) {
 static void rrdsetcalc_link(RRDSET *st, RRDCALC *rc) {
     debug(D_HEALTH, "Health linking alarm '%s.%s' to chart '%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, st->id, st->rrdhost->hostname);
 
-    rc->last_status_change = time(NULL);
+    rc->last_status_change = now_realtime_sec();
     rc->rrdset = st;
 
     rc->rrdset_next = st->alarms;
@@ -942,8 +1116,28 @@ static void rrdsetcalc_link(RRDSET *st, RRDCALC *rc) {
        if(!rc->units) rc->units = strdupz(st->units);
 
     {
-        time_t now = time(NULL);
-        health_alarm_log(st->rrdhost, rc->id, rc->next_event_id++, now, rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, rc->recipient, now - rc->last_status_change, rc->old_value, rc->value, rc->status, RRDCALC_STATUS_UNINITIALIZED, rc->source, rc->units, rc->info, 0);
+        time_t now = now_realtime_sec();
+        health_alarm_log(
+                st->rrdhost,
+                rc->id,
+                rc->next_event_id++,
+                now,
+                rc->name,
+                rc->rrdset->id,
+                rc->rrdset->family,
+                rc->exec,
+                rc->recipient,
+                now - rc->last_status_change,
+                rc->old_value,
+                rc->value,
+                rc->status,
+                RRDCALC_STATUS_UNINITIALIZED,
+                rc->source,
+                rc->units,
+                rc->info,
+                0,
+                0
+        );
     }
 }
 
@@ -980,8 +1174,28 @@ inline void rrdsetcalc_unlink(RRDCALC *rc) {
     }
 
     {
-        time_t now = time(NULL);
-        health_alarm_log(st->rrdhost, rc->id, rc->next_event_id++, now, rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, rc->recipient, now - rc->last_status_change, rc->old_value, rc->value, rc->status, RRDCALC_STATUS_REMOVED, rc->source, rc->units, rc->info, 0);
+        time_t now = now_realtime_sec();
+        health_alarm_log(
+                st->rrdhost,
+                rc->id,
+                rc->next_event_id++,
+                now,
+                rc->name,
+                rc->rrdset->id,
+                rc->rrdset->family,
+                rc->exec,
+                rc->recipient,
+                now - rc->last_status_change,
+                rc->old_value,
+                rc->value,
+                rc->status,
+                RRDCALC_STATUS_REMOVED,
+                rc->source,
+                rc->units,
+                rc->info,
+                0,
+                0
+        );
     }
 
     RRDHOST *host = st->rrdhost;
@@ -1248,7 +1462,8 @@ void rrdcalctemplate_link_matching(RRDSET *st) {
     RRDCALCTEMPLATE *rt;
 
     for(rt = st->rrdhost->templates; rt ; rt = rt->next) {
-        if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context)) {
+        if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context)
+                && (!rt->family_pattern || simple_pattern_matches(rt->family_pattern, st->family))) {
             RRDCALC *rc = rrdcalc_create(st->rrdhost, rt, st->id);
             if(unlikely(!rc))
                 error("Health tried to create alarm from template '%s', but it failed", rt->name);
@@ -1284,6 +1499,9 @@ static inline void rrdcalctemplate_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
     expression_free(rt->warning);
     expression_free(rt->critical);
 
+    freez(rt->family_match);
+    simple_pattern_free(rt->family_pattern);
+
     freez(rt->name);
     freez(rt->exec);
     freez(rt->recipient);
@@ -1303,6 +1521,7 @@ static inline void rrdcalctemplate_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
 #define HEALTH_ALARM_KEY "alarm"
 #define HEALTH_TEMPLATE_KEY "template"
 #define HEALTH_ON_KEY "on"
+#define HEALTH_FAMILIES_KEY "families"
 #define HEALTH_LOOKUP_KEY "lookup"
 #define HEALTH_CALC_KEY "calc"
 #define HEALTH_EVERY_KEY "every"
@@ -1315,6 +1534,7 @@ static inline void rrdcalctemplate_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
 #define HEALTH_UNITS_KEY "units"
 #define HEALTH_INFO_KEY "info"
 #define HEALTH_DELAY_KEY "delay"
+#define HEALTH_OPTIONS_KEY "options"
 
 static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) {
     if(!rc->chart) {
@@ -1545,6 +1765,35 @@ static inline int health_parse_delay(
     return 1;
 }
 
+static inline uint32_t health_parse_options(const char *s) {
+    uint32_t options = 0;
+    char buf[100+1] = "";
+
+    while(*s) {
+        buf[0] = '\0';
+
+        // skip spaces
+        while(*s && isspace(*s))
+            s++;
+
+        // find the next space
+        size_t count = 0;
+        while(*s && count < 100 && !isspace(*s))
+            buf[count++] = *s++;
+
+        if(buf[0]) {
+            buf[count] = '\0';
+
+            if(!strcasecmp(buf, "no-clear-notification") || !strcasecmp(buf, "no-clear"))
+                options |= RRDCALC_FLAG_NO_CLEAR_NOTIFICATION;
+            else
+                error("Ignoring unknown alarm option '%s'", buf);
+        }
+    }
+
+    return options;
+}
+
 static inline int health_parse_db_lookup(
         size_t line, const char *path, const char *file, char *string,
         int *group_method, int *after, int *before, int *every,
@@ -1647,14 +1896,35 @@ static inline int health_parse_db_lookup(
     return 1;
 }
 
-static inline char *tabs2spaces(char *s) {
-    char *t = s;
-    while(*t) {
-        if(unlikely(*t == '\t')) *t = ' ';
-        t++;
+static inline char *trim_all_spaces(char *buffer) {
+    char *d = buffer, *s = buffer;
+
+    // skip spaces
+    while(isspace(*s)) s++;
+
+    while(*s) {
+        // copy the non-space part
+        while(*s && !isspace(*s)) *d++ = *s++;
+
+        // add a space if we have to
+        if(*s && isspace(*s)) {
+            *d++ = ' ';
+            s++;
+        }
+
+        // skip spaces
+        while(isspace(*s)) s++;
+    }
+
+    *d = '\0';
+
+    if(d > buffer) {
+        d--;
+        if(isspace(*d)) *d = '\0';
     }
 
-    return s;
+    if(!buffer[0]) return NULL;
+    return buffer;
 }
 
 static inline char *health_source_file(size_t line, const char *path, const char *filename) {
@@ -1673,13 +1943,32 @@ static inline void strip_quotes(char *s) {
 int health_readfile(const char *path, const char *filename) {
     debug(D_HEALTH, "Health configuration reading file '%s/%s'", path, filename);
 
-    static uint32_t hash_alarm = 0, hash_template = 0, hash_on = 0, hash_calc = 0, hash_green = 0, hash_red = 0, hash_warn = 0, hash_crit = 0, hash_exec = 0, hash_every = 0, hash_lookup = 0, hash_units = 0, hash_info = 0, hash_recipient = 0, hash_delay = 0;
+    static uint32_t
+            hash_alarm = 0,
+            hash_template = 0,
+            hash_on = 0,
+            hash_families = 0,
+            hash_calc = 0,
+            hash_green = 0,
+            hash_red = 0,
+            hash_warn = 0,
+            hash_crit = 0,
+            hash_exec = 0,
+            hash_every = 0,
+            hash_lookup = 0,
+            hash_units = 0,
+            hash_info = 0,
+            hash_recipient = 0,
+            hash_delay = 0,
+            hash_options = 0;
+
     char buffer[HEALTH_CONF_MAX_LINE + 1];
 
     if(unlikely(!hash_alarm)) {
         hash_alarm = simple_uhash(HEALTH_ALARM_KEY);
         hash_template = simple_uhash(HEALTH_TEMPLATE_KEY);
         hash_on = simple_uhash(HEALTH_ON_KEY);
+        hash_families = simple_uhash(HEALTH_FAMILIES_KEY);
         hash_calc = simple_uhash(HEALTH_CALC_KEY);
         hash_lookup = simple_uhash(HEALTH_LOOKUP_KEY);
         hash_green = simple_uhash(HEALTH_GREEN_KEY);
@@ -1692,6 +1981,7 @@ int health_readfile(const char *path, const char *filename) {
         hash_info = simple_hash(HEALTH_INFO_KEY);
         hash_recipient = simple_hash(HEALTH_RECIPIENT_KEY);
         hash_delay = simple_uhash(HEALTH_DELAY_KEY);
+        hash_options = simple_uhash(HEALTH_OPTIONS_KEY);
     }
 
     snprintfz(buffer, HEALTH_CONF_MAX_LINE, "%s/%s", path, filename);
@@ -1734,8 +2024,8 @@ int health_readfile(const char *path, const char *filename) {
         s++;
 
         char *value = s;
-        key = trim(key);
-        value = trim(value);
+        key = trim_all_spaces(key);
+        value = trim_all_spaces(value);
 
         if(!key) {
             error("Health configuration has invalid line %zu of file '%s/%s'. Keyword is empty. Ignoring it.", line, path, filename);
@@ -1761,7 +2051,7 @@ int health_readfile(const char *path, const char *filename) {
 
             rc = callocz(1, sizeof(RRDCALC));
             rc->next_event_id = 1;
-            rc->name = tabs2spaces(strdupz(value));
+            rc->name = strdupz(value);
             rc->hash = simple_hash(rc->name);
             rc->source = health_source_file(line, path, filename);
             rc->green = NAN;
@@ -1784,7 +2074,7 @@ int health_readfile(const char *path, const char *filename) {
                 rrdcalctemplate_free(&localhost, rt);
 
             rt = callocz(1, sizeof(RRDCALCTEMPLATE));
-            rt->name = tabs2spaces(strdupz(value));
+            rt->name = strdupz(value);
             rt->hash_name = simple_hash(rt->name);
             rt->source = health_source_file(line, path, filename);
             rt->green = NAN;
@@ -1799,11 +2089,11 @@ int health_readfile(const char *path, const char *filename) {
                 if(rc->chart) {
                     if(strcmp(rc->chart, value))
                         error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                             line, path, filename, rc->name, key, rc->chart, value, value);
+                                line, path, filename, rc->name, key, rc->chart, value, value);
 
                     freez(rc->chart);
                 }
-                rc->chart = tabs2spaces(strdupz(value));
+                rc->chart = strdupz(value);
                 rc->hash_chart = simple_hash(rc->chart);
             }
             else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
@@ -1867,7 +2157,7 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rc->exec);
                 }
-                rc->exec = tabs2spaces(strdupz(value));
+                rc->exec = strdupz(value);
             }
             else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
                 if(rc->recipient) {
@@ -1877,7 +2167,7 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rc->recipient);
                 }
-                rc->recipient = tabs2spaces(strdupz(value));
+                rc->recipient = strdupz(value);
             }
             else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
                 if(rc->units) {
@@ -1887,7 +2177,7 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rc->units);
                 }
-                rc->units = tabs2spaces(strdupz(value));
+                rc->units = strdupz(value);
                 strip_quotes(rc->units);
             }
             else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
@@ -1898,12 +2188,15 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rc->info);
                 }
-                rc->info = tabs2spaces(strdupz(value));
+                rc->info = strdupz(value);
                 strip_quotes(rc->info);
             }
             else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
                 health_parse_delay(line, path, filename, value, &rc->delay_up_duration, &rc->delay_down_duration, &rc->delay_max_duration, &rc->delay_multiplier);
             }
+            else if(hash == hash_options && !strcasecmp(key, HEALTH_OPTIONS_KEY)) {
+                rc->options |= health_parse_options(value);
+            }
             else {
                 error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has unknown key '%s'.",
                      line, path, filename, rc->name, key);
@@ -1914,17 +2207,23 @@ int health_readfile(const char *path, const char *filename) {
                 if(rt->context) {
                     if(strcmp(rt->context, value))
                         error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
-                             line, path, filename, rt->name, key, rt->context, value, value);
+                                line, path, filename, rt->name, key, rt->context, value, value);
 
                     freez(rt->context);
                 }
-                rt->context = tabs2spaces(strdupz(value));
+                rt->context = strdupz(value);
                 rt->hash_context = simple_hash(rt->context);
             }
+            else if(hash == hash_families && !strcasecmp(key, HEALTH_FAMILIES_KEY)) {
+                freez(rt->family_match);
+                simple_pattern_free(rt->family_pattern);
+
+                rt->family_match = strdupz(value);
+                rt->family_pattern = simple_pattern_create(rt->family_match, SIMPLE_PATTERN_EXACT);
+            }
             else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
                 health_parse_db_lookup(line, path, filename, value, &rt->group, &rt->after, &rt->before,
-                                       &rt->update_every,
-                                       &rt->options, &rt->dimensions);
+                                       &rt->update_every, &rt->options, &rt->dimensions);
             }
             else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
                 if(!health_parse_duration(value, &rt->update_every))
@@ -1982,7 +2281,7 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rt->exec);
                 }
-                rt->exec = tabs2spaces(strdupz(value));
+                rt->exec = strdupz(value);
             }
             else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
                 if(rt->recipient) {
@@ -1992,7 +2291,7 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rt->recipient);
                 }
-                rt->recipient = tabs2spaces(strdupz(value));
+                rt->recipient = strdupz(value);
             }
             else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
                 if(rt->units) {
@@ -2002,7 +2301,7 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rt->units);
                 }
-                rt->units = tabs2spaces(strdupz(value));
+                rt->units = strdupz(value);
                 strip_quotes(rt->units);
             }
             else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
@@ -2013,12 +2312,15 @@ int health_readfile(const char *path, const char *filename) {
 
                     freez(rt->info);
                 }
-                rt->info = tabs2spaces(strdupz(value));
+                rt->info = strdupz(value);
                 strip_quotes(rt->info);
             }
             else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
                 health_parse_delay(line, path, filename, value, &rt->delay_up_duration, &rt->delay_down_duration, &rt->delay_max_duration, &rt->delay_multiplier);
             }
+            else if(hash == hash_options && !strcasecmp(key, HEALTH_OPTIONS_KEY)) {
+                rt->options |= health_parse_options(value);
+            }
             else {
                 error("Health configuration at line %zu of file '%s/%s' for template '%s' has unknown key '%s'.",
                       line, path, filename, rt->name, key);
@@ -2087,7 +2389,7 @@ void health_readdir(const char *path) {
 
 static inline char *health_config_dir(void) {
     char buffer[FILENAME_MAX + 1];
-    snprintfz(buffer, FILENAME_MAX, "%s/health.d", config_get("global", "config directory", CONFIG_DIR));
+    snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_config_dir);
     return config_get("health", "health configuration directory", buffer);
 }
 
@@ -2099,7 +2401,8 @@ void health_init(void) {
         return;
     }
 
-    char *pathname = config_get("health", "health db directory", VARLIB_DIR "/health");
+    char pathname[FILENAME_MAX + 1];
+    snprintfz(pathname, FILENAME_MAX, "%s/health", netdata_configured_varlib_dir);
     if(mkdir(pathname, 0770) == -1 && errno != EEXIST)
         fatal("Cannot create directory '%s'.", pathname);
 
@@ -2112,11 +2415,8 @@ void health_init(void) {
 
     char *path = health_config_dir();
 
-    {
-        char buffer[FILENAME_MAX + 1];
-        snprintfz(buffer, FILENAME_MAX, "%s/alarm-notify.sh", config_get("global", "plugins directory", PLUGINS_DIR));
-        health.health_default_exec = config_get("health", "script to execute on alarm", buffer);
-    }
+    snprintfz(filename, FILENAME_MAX, "%s/alarm-notify.sh", netdata_configured_plugins_dir);
+    health.health_default_exec = config_get("health", "script to execute on alarm", filename);
 
     long n = config_get_number("health", "in memory max health log entries", (long)localhost.health_log.max);
     if(n < 10) {
@@ -2141,61 +2441,70 @@ static inline void health_string2json(BUFFER *wb, const char *prefix, const char
 }
 
 static inline void health_alarm_entry2json_nolock(BUFFER *wb, ALARM_ENTRY *ae, RRDHOST *host) {
-    buffer_sprintf(wb, "\n\t{\n"
-                           "\t\t\"hostname\": \"%s\",\n"
-                           "\t\t\"unique_id\": %u,\n"
-                           "\t\t\"alarm_id\": %u,\n"
-                           "\t\t\"alarm_event_id\": %u,\n"
-                           "\t\t\"name\": \"%s\",\n"
-                           "\t\t\"chart\": \"%s\",\n"
-                           "\t\t\"family\": \"%s\",\n"
-                           "\t\t\"processed\": %s,\n"
-                           "\t\t\"updated\": %s,\n"
-                           "\t\t\"exec_run\": %lu,\n"
-                           "\t\t\"exec_failed\": %s,\n"
-                           "\t\t\"exec\": \"%s\",\n"
-                           "\t\t\"recipient\": \"%s\",\n"
-                           "\t\t\"exec_code\": %d,\n"
-                           "\t\t\"source\": \"%s\",\n"
-                           "\t\t\"units\": \"%s\",\n"
-                           "\t\t\"info\": \"%s\",\n"
-                           "\t\t\"when\": %lu,\n"
-                           "\t\t\"duration\": %lu,\n"
-                           "\t\t\"non_clear_duration\": %lu,\n"
-                           "\t\t\"status\": \"%s\",\n"
-                           "\t\t\"old_status\": \"%s\",\n"
-                           "\t\t\"delay\": %d,\n"
-                           "\t\t\"delay_up_to_timestamp\": %lu,\n"
-                           "\t\t\"updated_by_id\": %u,\n"
-                           "\t\t\"updates_id\": %u,\n",
-                   host->hostname,
-                   ae->unique_id,
-                   ae->alarm_id,
-                   ae->alarm_event_id,
-                   ae->name,
-                   ae->chart,
-                   ae->family,
-                   (ae->flags & HEALTH_ENTRY_FLAG_PROCESSED)?"true":"false",
-                   (ae->flags & HEALTH_ENTRY_FLAG_UPDATED)?"true":"false",
-                   (unsigned long)ae->exec_run_timestamp,
-                   (ae->flags & HEALTH_ENTRY_FLAG_EXEC_FAILED)?"true":"false",
-                   ae->exec?ae->exec:health.health_default_exec,
-                   ae->recipient?ae->recipient:health.health_default_recipient,
-                   ae->exec_code,
-                   ae->source,
-                   ae->units?ae->units:"",
-                   ae->info?ae->info:"",
-                   (unsigned long)ae->when,
-                   (unsigned long)ae->duration,
-                   (unsigned long)ae->non_clear_duration,
-                   rrdcalc_status2string(ae->new_status),
-                   rrdcalc_status2string(ae->old_status),
-                   ae->delay,
-                   (unsigned long)ae->delay_up_to_timestamp,
-                   ae->updated_by_id,
-                   ae->updates_id
+    buffer_sprintf(wb,
+            "\n\t{\n"
+                    "\t\t\"hostname\": \"%s\",\n"
+                    "\t\t\"unique_id\": %u,\n"
+                    "\t\t\"alarm_id\": %u,\n"
+                    "\t\t\"alarm_event_id\": %u,\n"
+                    "\t\t\"name\": \"%s\",\n"
+                    "\t\t\"chart\": \"%s\",\n"
+                    "\t\t\"family\": \"%s\",\n"
+                    "\t\t\"processed\": %s,\n"
+                    "\t\t\"updated\": %s,\n"
+                    "\t\t\"exec_run\": %lu,\n"
+                    "\t\t\"exec_failed\": %s,\n"
+                    "\t\t\"exec\": \"%s\",\n"
+                    "\t\t\"recipient\": \"%s\",\n"
+                    "\t\t\"exec_code\": %d,\n"
+                    "\t\t\"source\": \"%s\",\n"
+                    "\t\t\"units\": \"%s\",\n"
+                    "\t\t\"info\": \"%s\",\n"
+                    "\t\t\"when\": %lu,\n"
+                    "\t\t\"duration\": %lu,\n"
+                    "\t\t\"non_clear_duration\": %lu,\n"
+                    "\t\t\"status\": \"%s\",\n"
+                    "\t\t\"old_status\": \"%s\",\n"
+                    "\t\t\"delay\": %d,\n"
+                    "\t\t\"delay_up_to_timestamp\": %lu,\n"
+                    "\t\t\"updated_by_id\": %u,\n"
+                    "\t\t\"updates_id\": %u,\n"
+                    "\t\t\"value_string\": \"%s\",\n"
+                    "\t\t\"old_value_string\": \"%s\",\n"
+            , host->hostname
+            , ae->unique_id
+            , ae->alarm_id
+            , ae->alarm_event_id
+            , ae->name
+            , ae->chart
+            , ae->family
+            , (ae->flags & HEALTH_ENTRY_FLAG_PROCESSED)?"true":"false"
+            , (ae->flags & HEALTH_ENTRY_FLAG_UPDATED)?"true":"false"
+            , (unsigned long)ae->exec_run_timestamp
+            , (ae->flags & HEALTH_ENTRY_FLAG_EXEC_FAILED)?"true":"false"
+            , ae->exec?ae->exec:health.health_default_exec
+            , ae->recipient?ae->recipient:health.health_default_recipient
+            , ae->exec_code
+            , ae->source
+            , ae->units?ae->units:""
+            , ae->info?ae->info:""
+            , (unsigned long)ae->when
+            , (unsigned long)ae->duration
+            , (unsigned long)ae->non_clear_duration
+            , rrdcalc_status2string(ae->new_status)
+            , rrdcalc_status2string(ae->old_status)
+            , ae->delay
+            , (unsigned long)ae->delay_up_to_timestamp
+            , ae->updated_by_id
+            , ae->updates_id
+            , ae->new_value_string
+            , ae->old_value_string
     );
 
+    if(unlikely(ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION)) {
+        buffer_strcat(wb, "\t\t\"no_clear_notification\": true,\n");
+    }
+
     buffer_strcat(wb, "\t\t\"value\":");
     buffer_rrd_value(wb, ae->new_value);
     buffer_strcat(wb, ",\n");
@@ -2228,6 +2537,9 @@ void health_alarm_log2json(RRDHOST *host, BUFFER *wb, uint32_t after) {
 }
 
 static inline void health_rrdcalc2json_nolock(BUFFER *wb, RRDCALC *rc) {
+    char value_string[100 + 1];
+    format_value_and_unit(value_string, 100, rc->value, rc->units, -1);
+
     buffer_sprintf(wb,
            "\t\t\"%s.%s\": {\n"
                    "\t\t\t\"id\": %lu,\n"
@@ -2251,30 +2563,36 @@ static inline void health_rrdcalc2json_nolock(BUFFER *wb, RRDCALC *rc) {
                    "\t\t\t\"delay_multiplier\": %f,\n"
                    "\t\t\t\"delay\": %d,\n"
                    "\t\t\t\"delay_up_to_timestamp\": %lu,\n"
-            , rc->chart, rc->name
-            , (unsigned long)rc->id
-            , rc->name
-            , rc->chart
-            , (rc->rrdset && rc->rrdset->family)?rc->rrdset->family:""
-            , (rc->rrdset)?"true":"false"
-            , rc->exec?rc->exec:health.health_default_exec
-            , rc->recipient?rc->recipient:health.health_default_recipient
-            , rc->source
-            , rc->units?rc->units:""
-            , rc->info?rc->info:""
-            , rrdcalc_status2string(rc->status)
-            , (unsigned long)rc->last_status_change
-            , (unsigned long)rc->last_updated
-            , (unsigned long)rc->next_update
-            , rc->update_every
-            , rc->delay_up_duration
-            , rc->delay_down_duration
-            , rc->delay_max_duration
-            , rc->delay_multiplier
-            , rc->delay_last
-            , (unsigned long)rc->delay_up_to_timestamp
+                   "\t\t\t\"value_string\": \"%s\",\n"
+           , rc->chart, rc->name
+           , (unsigned long)rc->id
+           , rc->name
+           , rc->chart
+           , (rc->rrdset && rc->rrdset->family)?rc->rrdset->family:""
+           , (rc->rrdset)?"true":"false"
+           , rc->exec?rc->exec:health.health_default_exec
+           , rc->recipient?rc->recipient:health.health_default_recipient
+           , rc->source
+           , rc->units?rc->units:""
+           , rc->info?rc->info:""
+           , rrdcalc_status2string(rc->status)
+           , (unsigned long)rc->last_status_change
+           , (unsigned long)rc->last_updated
+           , (unsigned long)rc->next_update
+           , rc->update_every
+           , rc->delay_up_duration
+           , rc->delay_down_duration
+           , rc->delay_max_duration
+           , rc->delay_multiplier
+           , rc->delay_last
+           , (unsigned long)rc->delay_up_to_timestamp
+           , value_string
     );
 
+    if(unlikely(rc->options & RRDCALC_FLAG_NO_CLEAR_NOTIFICATION)) {
+        buffer_strcat(wb, "\t\t\t\"no_clear_notification\": true,\n");
+    }
+
     if(RRDCALC_HAS_DB_LOOKUP(rc)) {
         if(rc->dimensions && *rc->dimensions)
             health_string2json(wb, "\t\t\t", "lookup_dimensions", rc->dimensions, ",\n");
@@ -2342,7 +2660,7 @@ void health_alarms2json(RRDHOST *host, BUFFER *wb, int all) {
                         host->hostname,
                         (host->health_log.next_log_id > 0)?(host->health_log.next_log_id - 1):0,
                         health_enabled?"true":"false",
-                        (unsigned long)time(NULL));
+                        (unsigned long)now_realtime_sec());
 
     RRDCALC *rc;
     for(i = 0, rc = host->alarms; rc ; rc = rc->next) {
@@ -2425,45 +2743,61 @@ void health_reload(void) {
 // health main thread and friends
 
 static inline int rrdcalc_value2status(calculated_number n) {
-    if(isnan(n)) return RRDCALC_STATUS_UNDEFINED;
+    if(isnan(n) || isinf(n)) return RRDCALC_STATUS_UNDEFINED;
     if(n) return RRDCALC_STATUS_RAISED;
     return RRDCALC_STATUS_CLEAR;
 }
 
+#define ALARM_EXEC_COMMAND_LENGTH 8192
+
 static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
     ae->flags |= HEALTH_ENTRY_FLAG_PROCESSED;
 
     if(unlikely(ae->new_status < RRDCALC_STATUS_CLEAR)) {
         // do not send notifications for internal statuses
+        debug(D_HEALTH, "Health not sending notification for alarm '%s.%s' status %s (internal statuses)", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+        goto done;
+    }
+
+    if(unlikely(ae->new_status <= RRDCALC_STATUS_CLEAR && (ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION))) {
+        // do not send notifications for disabled statuses
+        debug(D_HEALTH, "Health not sending notification for alarm '%s.%s' status %s (it has no-clear-notification enabled)", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+        // mark it as run, so that we will send the same alarm if it happens again
         goto done;
     }
 
     // find the previous notification for the same alarm
     // which we have run the exec script
-    ALARM_ENTRY *t;
-    for(t = ae->next; t ;t = t->next) {
-        if(t->alarm_id == ae->alarm_id && t->flags & HEALTH_ENTRY_FLAG_EXEC_RUN)
-            break;
-    }
+    // exception: alarms with HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION set
+    if(likely(!(ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION))) {
+        uint32_t id = ae->alarm_id;
+        ALARM_ENTRY *t;
+        for(t = ae->next; t ; t = t->next) {
+            if(t->alarm_id == id && t->flags & HEALTH_ENTRY_FLAG_EXEC_RUN)
+                break;
+        }
 
-    if(likely(t)) {
-        // we have executed this alarm notification in the past
-        if (t && t->new_status == ae->new_status) {
-            // don't send the same notification again
-            debug(D_HEALTH, "Health not sending again notification for alarm '%s.%s' status %s", ae->chart, ae->name,
-                 rrdcalc_status2string(ae->new_status));
-            goto done;
+        if(likely(t)) {
+            // we have executed this alarm notification in the past
+            if(t && t->new_status == ae->new_status) {
+                // don't send the notification for the same status again
+                debug(D_HEALTH, "Health not sending again notification for alarm '%s.%s' status %s", ae->chart, ae->name
+                      , rrdcalc_status2string(ae->new_status));
+                goto done;
+            }
         }
-    }
-    else {
-        // we have not executed this alarm notification in the past
-        if(unlikely(ae->old_status == RRDCALC_STATUS_UNINITIALIZED && ae->new_status == RRDCALC_STATUS_CLEAR)) {
-            debug(D_HEALTH, "Health not sending notification for first initialization of alarm '%s.%s' status %s", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
-            goto done;
+        else {
+            // we have not executed this alarm notification in the past
+            // so, don't send CLEAR notifications
+            if(unlikely(ae->new_status == RRDCALC_STATUS_CLEAR)) {
+                debug(D_HEALTH, "Health not sending notification for first initialization of alarm '%s.%s' status %s"
+                      , ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+                goto done;
+            }
         }
     }
 
-    char buffer[FILENAME_MAX + 1];
+    static char command_to_run[ALARM_EXEC_COMMAND_LENGTH + 1];
     pid_t command_pid;
 
     const char *exec = ae->exec;
@@ -2472,7 +2806,7 @@ static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
     const char *recipient = ae->recipient;
     if(!recipient) recipient = health.health_default_recipient;
 
-    snprintfz(buffer, FILENAME_MAX, "exec %s '%s' '%s' '%u' '%u' '%u' '%lu' '%s' '%s' '%s' '%s' '%s' '%0.0Lf' '%0.0Lf' '%s' '%u' '%u' '%s' '%s'",
+    snprintfz(command_to_run, ALARM_EXEC_COMMAND_LENGTH, "exec %s '%s' '%s' '%u' '%u' '%u' '%lu' '%s' '%s' '%s' '%s' '%s' '%0.0Lf' '%0.0Lf' '%s' '%u' '%u' '%s' '%s' '%s' '%s'",
               exec,
               recipient,
               host->hostname,
@@ -2491,20 +2825,22 @@ static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
               (uint32_t)ae->duration,
               (uint32_t)ae->non_clear_duration,
               ae->units?ae->units:"",
-              ae->info?ae->info:""
+              ae->info?ae->info:"",
+              ae->new_value_string,
+              ae->old_value_string
     );
 
     ae->flags |= HEALTH_ENTRY_FLAG_EXEC_RUN;
-    ae->exec_run_timestamp = time(NULL);
+    ae->exec_run_timestamp = now_realtime_sec();
 
-    debug(D_HEALTH, "executing command '%s'", buffer);
-    FILE *fp = mypopen(buffer, &command_pid);
+    debug(D_HEALTH, "executing command '%s'", command_to_run);
+    FILE *fp = mypopen(command_to_run, &command_pid);
     if(!fp) {
-        error("HEALTH: Cannot popen(\"%s\", \"r\").", buffer);
+        error("HEALTH: Cannot popen(\"%s\", \"r\").", command_to_run);
         goto done;
     }
     debug(D_HEALTH, "HEALTH reading from command");
-    char *s = fgets(buffer, FILENAME_MAX, fp);
+    char *s = fgets(command_to_run, FILENAME_MAX, fp);
     (void)s;
     ae->exec_code = mypclose(fp, command_pid);
     debug(D_HEALTH, "done executing command - returned with code %d", ae->exec_code);
@@ -2531,7 +2867,7 @@ static inline void health_process_notifications(RRDHOST *host, ALARM_ENTRY *ae)
 static inline void health_alarm_log_process(RRDHOST *host) {
     static uint32_t stop_at_id = 0;
     uint32_t first_waiting = (host->health_log.alarms)?host->health_log.alarms->unique_id:0;
-    time_t now = time(NULL);
+    time_t now = now_realtime_sec();
 
     pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
 
@@ -2583,6 +2919,8 @@ static inline void health_alarm_log_process(RRDHOST *host) {
         freez(ae->source);
         freez(ae->units);
         freez(ae->info);
+        freez(ae->old_value_string);
+        freez(ae->new_value_string);
         freez(ae);
 
         ae = t;
@@ -2647,7 +2985,7 @@ static inline int rrdcalc_isrunnable(RRDCALC *rc, time_t now, time_t *next_run)
 }
 
 void *health_main(void *ptr) {
-    (void)ptr;
+    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
 
     info("HEALTH thread created with task id %d", gettid());
 
@@ -2668,7 +3006,7 @@ void *health_main(void *ptr) {
         debug(D_HEALTH, "Health monitoring iteration no %u started", loop);
 
         int oldstate, runnable = 0;
-        time_t now = time(NULL);
+        time_t now = now_realtime_sec();
         time_t next_run = now + min_run_every;
         RRDCALC *rc;
 
@@ -2912,7 +3250,27 @@ void *health_main(void *ptr) {
 
                     rc->delay_last = delay;
                     rc->delay_up_to_timestamp = now + delay;
-                    health_alarm_log(&localhost, rc->id, rc->next_event_id++, now, rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, rc->recipient, now - rc->last_status_change, rc->old_value, rc->value, rc->status, status, rc->source, rc->units, rc->info, rc->delay_last);
+                    health_alarm_log(
+                            &localhost,
+                            rc->id,
+                            rc->next_event_id++,
+                            now,
+                            rc->name,
+                            rc->rrdset->id,
+                            rc->rrdset->family,
+                            rc->exec,
+                            rc->recipient,
+                            now - rc->last_status_change,
+                            rc->old_value,
+                            rc->value,
+                            rc->status,
+                            status,
+                            rc->source,
+                            rc->units,
+                            rc->info,
+                            rc->delay_last,
+                            (rc->options & RRDCALC_FLAG_NO_CLEAR_NOTIFICATION)?HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION:0
+                    );
                     rc->last_status_change = now;
                     rc->status = status;
                 }
@@ -2940,11 +3298,11 @@ void *health_main(void *ptr) {
         if(unlikely(netdata_exit))
             break;
         
-        now = time(NULL);
+        now = now_realtime_sec();
         if(now < next_run) {
             debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration in %d secs",
                   loop, (int) (next_run - now));
-            sleep_usec(1000000 * (unsigned long long) (next_run - now));
+            sleep_usec(USEC_PER_SEC * (usec_t) (next_run - now));
         }
         else {
             debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop);
@@ -2954,6 +3312,8 @@ void *health_main(void *ptr) {
     buffer_free(wb);
 
     info("HEALTH thread exiting");
+
+    static_thread->enabled = 0;
     pthread_exit(NULL);
     return NULL;
 }