system/netdata-openrc

   1 #!/sbin/runscript
   2
   3 # The path netdata has been installed.
   4 # Leave it empty if netdata is installed in /
   5 NETDATA_INSTALL_PATH=${NETDATA_INSTALL_PATH-}
   6
   7 # The user netdata is configured to run as.
   8 # If you edit its configuration file to set a different
   9 # user, set it here too, to have its files switch ownership
  10 NETDATA_OWNER=${NETDATA_OWNER-netdata:netdata}
  11
  12 # The URL to download netdata config.
  13 NETDATA_CONFIG_URL=${NETDATA_CONFIG_URL-http://localhost:19999/netdata.conf}
  14
  15 # The timeout in seconds to wait for netdata
  16 # to save its database on disk and exit.
  17 NETDATA_WAIT_EXIT_TIMEOUT=${NETDATA_WAIT_EXIT_TIMEOUT-15}
  18
  19 # When set to 1, if netdata does not exit in
  20 # NETDATA_WAIT_EXIT_TIMEOUT, we will force it
  21 # to exit.
  22 NETDATA_FORCE_EXIT=${NETDATA_FORCE_EXIT-0}
  23
  24 # Netdata will use these services, only if they
  25 # are enabled to start.
  26 NETDATA_START_AFTER_SERVICES="${NETDATA_START_AFTER_SERVICES-apache2 squid nginx mysql named opensips upsd hostapd postfix lm_sensors}"
  27
  28 extra_started_commands="getconf"
  29 pidfile="/var/run/netdata.pid"
  30 command="${NETDATA_INSTALL_PATH}/usr/sbin/netdata"
  31 command_background="yes"
  32
  33 depend() {
  34         use logger
  35         need net
  36
  37         local x
  38         for x in ${NETDATA_START_AFTER_SERVICES}
  39         do
  40                 if [ -f /etc/runlevels/default/${x} ]
  41                         then
  42                         use ${x}
  43                 fi
  44         done
  45 }
  46
  47 start() {
  48         local ret
  49
  50         if [ ! -d ${NETDATA_INSTALL_PATH}/var/cache/netdata ]
  51                 then
  52                 ebegin "Creating ${NETDATA_INSTALL_PATH}/var/cache/netdata"
  53                 mkdir -p ${NETDATA_INSTALL_PATH}/var/cache/netdata
  54                 chown ${NETDATA_OWNER} ${NETDATA_INSTALL_PATH}/var/cache/netdata
  55                 echo "${NETDATA_OWNER}" >${NETDATA_INSTALL_PATH}/var/cache/netdata/.last_owner
  56                 eend $?
  57         fi
  58
  59         if [ "$(cat ${NETDATA_INSTALL_PATH}/var/cache/netdata/.last_owner 2>/dev/null)" != "${NETDATA_OWNER}" ]
  60                 then
  61                 ebegin "Switching ownership of ${NETDATA_INSTALL_PATH}/var/cache/netdata"
  62                 chown -R ${NETDATA_OWNER} ${NETDATA_INSTALL_PATH}/var/cache/netdata
  63                 echo "${NETDATA_OWNER}" >${NETDATA_INSTALL_PATH}/var/cache/netdata/.last_owner
  64                 eend 0
  65         fi
  66
  67         ebegin "Starting netdata"
  68         start-stop-daemon --start --quiet --pidfile ${pidfile} --exec ${command} -- ${NETDATA_EXTRA_ARGS}
  69         ret=$?
  70         eend $ret
  71
  72         if [ $ret -eq 0 -a ! -f ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf ]
  73                 then
  74                 ebegin "Downloading default configuration to ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf"
  75                 sleep 2
  76                 curl -s -o ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf.new "${NETDATA_CONFIG_URL}"
  77                 ret=$?
  78                 if [ $ret -eq 0 -a -s ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf.new ]
  79                         then
  80                         mv ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf.new ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf
  81                 else
  82                         ret=1
  83                         rm ${NETDATA_INSTALL_PATH}/etc/netdata/netdata.conf.new 2>/dev/null
  84                 fi
  85                 eend $ret
  86         fi
  87 }
  88
  89 stop() {
  90         local result ret=0 count=0 sigkill=0
  91
  92         ebegin "Stopping netdata"
  93         start-stop-daemon --stop --quiet --pidfile ${pidfile}
  94         result=$?
  95         eend $result
  96
  97         ebegin "Waiting for netdata to save its database"
  98         while [ -f "${pidfile}" ]
  99         do
 100                 if [ $count -gt ${NETDATA_WAIT_EXIT_TIMEOUT} ]
 101                         then
 102                         sigkill=1
 103                         break
 104                 fi
 105
 106                 count=$[count + 1]
 107                 kill -0 $(cat ${pidfile}) 2>/dev/null
 108                 ret=$?
 109                 test $ret -eq 0 && sleep 1
 110         done
 111         eend $sigkill
 112
 113         if [ $sigkill -eq 1 -a -f "${pidfile}" ]
 114                 then
 115                 ebegin "Netdata is taking too long to exit, forcing it to quit"
 116                 kill -SIGKILL $(cat ${pidfile}) 2>/dev/null
 117                 eend $?
 118         fi
 119 }
 120
 121 getconf() {
 122         ebegin "Downloading configuration from netdata to /tmp/netdata.conf"
 123         curl -o /tmp/netdata.conf "${NETDATA_CONFIG_URL}"
 124         eend $?
 125 }