---
+# bind_rndc
+
+Module parses bind dump file to collect real-time performance metrics
+
+**Requirements:**
+ * Version of bind must be 9.6 +
+ * Netdata must have permissions to run `rndc status`
+
+It produces:
+
+1. **Name server statistics**
+ * requests
+ * responses
+ * success
+ * auth_answer
+ * nonauth_answer
+ * nxrrset
+ * failure
+ * nxdomain
+ * recursion
+ * duplicate
+ * rejections
+
+2. **Incoming queries**
+ * RESERVED0
+ * A
+ * NS
+ * CNAME
+ * SOA
+ * PTR
+ * MX
+ * TXT
+ * X25
+ * AAAA
+ * SRV
+ * NAPTR
+ * A6
+ * DS
+ * RSIG
+ * DNSKEY
+ * SPF
+ * ANY
+ * DLV
+
+3. **Outgoing queries**
+ * Same as Incoming queries
+
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+ named_stats_path : '/var/log/bind/named.stats'
+```
+
+If no configuration is given, module will attempt to read named.stats file at `/var/log/bind/named.stats`
+
+---
+
# cpufreq
-Module shows current cpu frequency by looking at appropriate files in /sys/devices
+This module shows the current CPU frequency as set by the cpufreq kernel
+module.
**Requirement:**
-Processor which presents data scaling frequency data
+You need to have `CONFIG_CPU_FREQ` and (optionally) `CONFIG_CPU_FREQ_STAT`
+enabled in your kernel.
+
+This module tries to read from one of two possible locations. On
+initialization, it tries to read the `time_in_state` files provided by
+cpufreq\_stats. If this file does not exist, or doesn't contain valid data, it
+falls back to using the more inaccurate `scaling_cur_freq` file (which only
+represents the **current** CPU frequency, and doesn't account for any state
+changes which happen between updates).
It produces one chart with multiple lines (one line per core).
sys_dir: "/sys/devices"
```
-If no configuration is given, module will search for `scaling_cur_freq` files in `/sys/devices` directory.
+If no configuration is given, module will search for cpufreq files in `/sys/devices` directory.
Directory is also prefixed with `NETDATA_HOST_PREFIX` if specified.
---
+# cpuidle
+
+This module monitors the usage of CPU idle states.
+
+**Requirement:**
+Your kernel needs to have `CONFIG_CPU_IDLE` enabled.
+
+It produces one stacked chart per CPU, showing the percentage of time spent in
+each state.
+
+---
+
# dovecot
This module provides statistics information from dovecot server.
---
+# haproxy
+
+Module monitors frontend and backend metrics such as bytes in, bytes out, sessions current, sessions in queue current.
+And health metrics such as backend servers status (server check should be used).
+
+Plugin can obtain data from url **OR** unix socket.
+
+**Requirement:**
+Socket MUST be readable AND writable by netdata user.
+
+It produces:
+
+1. **Frontend** family charts
+ * Kilobytes in/s
+ * Kilobytes out/s
+ * Sessions current
+ * Sessions in queue current
+
+2. **Backend** family charts
+ * Kilobytes in/s
+ * Kilobytes out/s
+ * Sessions current
+ * Sessions in queue current
+
+3. **Health** chart
+ * number of failed servers for every backend (in DOWN state)
+
+
+### configuration
+
+Sample:
+
+```yaml
+via_url:
+ user : 'username' # ONLY IF stats auth is used
+ pass : 'password' # # ONLY IF stats auth is used
+ url : 'http://ip.address:port/url;csv;norefresh'
+```
+
+OR
+
+```yaml
+via_socket:
+ socket : 'path/to/haproxy/sock'
+```
+
+If no configuration is given, module will fail to run.
+
+---
+
# hddtemp
Module monitors disk temperatures from one or more hddtemp daemons.
---
+# isc_dhcpd
+
+Module monitor leases database to show all active leases for given pools.
+
+**Requirements:**
+ * dhcpd leases file MUST BE readable by netdata
+ * pools MUST BE in CIDR format
+
+It produces:
+
+1. **Pools utilization** Aggregate chart for all pools.
+ * utilization in percent
+
+2. **Total leases**
+ * leases (overall number of leases for all pools)
+
+3. **Active leases** for every pools
+ * leases (number of active leases in pool)
+
+
+### configuration
+
+Sample:
+
+```yaml
+local:
+ leases_path : '/var/lib/dhcp/dhcpd.leases'
+ pools : '192.168.3.0/24 192.168.4.0/24 192.168.5.0/24'
+```
+
+In case of python2 you need to install `py2-ipaddress` to make plugin work.
+The module will not work If no configuration is given.
+
+---
+
+
+# mdstat
+
+Module monitor /proc/mdstat
+
+It produces:
+
+1. **Health** Number of failed disks in every array (aggregate chart).
+
+2. **Disks stats**
+ * total (number of devices array ideally would have)
+ * inuse (number of devices currently are in use)
+
+3. **Current status**
+ * resync in percent
+ * recovery in percent
+ * reshape in percent
+ * check in percent
+
+4. **Operation status** (if resync/recovery/reshape/check is active)
+ * finish in minutes
+ * speed in megabytes/s
+
+### configuration
+No configuration is needed.
+
+---
+
# memcached
Memcached monitoring module. Data grabbed from [stats interface](https://github.com/memcached/memcached/wiki/Commands#stats).
It produces:
-**Users** OpenVPN active users
+1. **Users** OpenVPN active users
* users
-**Traffic** OpenVPN overall bandwidth usage in kilobit/s
+2. **Traffic** OpenVPN overall bandwidth usage in kilobit/s
* in
* out
projects / netdata.git / blobdiff