309 lines
13 KiB
Plaintext
309 lines
13 KiB
Plaintext
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###############################################################################
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## Monit control file
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###############################################################################
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##
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## Comments begin with a '#' and extend through the end of the line. Keywords
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## are case insensitive. All path's MUST BE FULLY QUALIFIED, starting with '/'.
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##
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## Below you will find examples of some frequently used statements. For
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## information about the control file and a complete list of statements and
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## options, please have a look in the Monit manual.
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##
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##
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###############################################################################
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## Global section
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###############################################################################
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##
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## Start Monit in the background (run as a daemon):
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#
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set daemon 120 # check services at 2-minute intervals
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# with start delay 240 # optional: delay the first check by 4-minutes (by
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# # default Monit check immediately after Monit start)
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#
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#
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## Set syslog logging. If you want to log to a standalone log file instead,
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## specify the full path to the log file
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#
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# set logfile /var/log/monit.log
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set logfile syslog
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#
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#
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## Set the location of the Monit lock file which stores the process id of the
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## running Monit instance. By default this file is stored in $HOME/.monit.pid
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#
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# set pidfile /var/run/monit.pid
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#
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## Set the location of the Monit id file which stores the unique id for the
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## Monit instance. The id is generated and stored on first Monit start. By
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## default the file is placed in $HOME/.monit.id.
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#
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# set idfile /var/.monit.id
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set idfile /var/lib/monit/id
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#
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## Set the location of the Monit state file which saves monitoring states
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## on each cycle. By default the file is placed in $HOME/.monit.state. If
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## the state file is stored on a persistent filesystem, Monit will recover
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## the monitoring state across reboots. If it is on temporary filesystem, the
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## state will be lost on reboot which may be convenient in some situations.
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#
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set statefile /var/lib/monit/state
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#
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#
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## Set limits for various tests. The following example shows the default values:
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##
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# set limits {
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# programOutput: 512 B, # check program's output truncate limit
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# sendExpectBuffer: 256 B, # limit for send/expect protocol test
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# fileContentBuffer: 512 B, # limit for file content test
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# httpContentBuffer: 1 MB, # limit for HTTP content test
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# networkTimeout: 5 seconds # timeout for network I/O
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# programTimeout: 300 seconds # timeout for check program
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# stopTimeout: 30 seconds # timeout for service stop
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# startTimeout: 30 seconds # timeout for service start
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# restartTimeout: 30 seconds # timeout for service restart
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# }
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## Set global SSL options (just most common options showed, see manual for
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## full list).
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#
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# set ssl {
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# verify : enable, # verify SSL certificates (disabled by default but STRONGLY RECOMMENDED)
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# selfsigned : allow # allow self signed SSL certificates (reject by default)
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# }
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#
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#
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## Set the list of mail servers for alert delivery. Multiple servers may be
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## specified using a comma separator. If the first mail server fails, Monit
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# will use the second mail server in the list and so on. By default Monit uses
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# port 25 - it is possible to override this with the PORT option.
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#
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# set mailserver mail.bar.baz, # primary mailserver
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# backup.bar.baz port 10025, # backup mailserver on port 10025
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# localhost # fallback relay
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#
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#
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## By default Monit will drop alert events if no mail servers are available.
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## If you want to keep the alerts for later delivery retry, you can use the
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## EVENTQUEUE statement. The base directory where undelivered alerts will be
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## stored is specified by the BASEDIR option. You can limit the queue size
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## by using the SLOTS option (if omitted, the queue is limited by space
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## available in the back end filesystem).
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#
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set eventqueue
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basedir /var/lib/monit/events # set the base directory where events will be stored
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slots 100 # optionally limit the queue size
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#
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#
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## Send status and events to M/Monit (for more informations about M/Monit
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## see https://mmonit.com/). By default Monit registers credentials with
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## M/Monit so M/Monit can smoothly communicate back to Monit and you don't
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## have to register Monit credentials manually in M/Monit. It is possible to
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## disable credential registration using the commented out option below.
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## Though, if safety is a concern we recommend instead using https when
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## communicating with M/Monit and send credentials encrypted. The password
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## should be URL encoded if it contains URL-significant characters like
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## ":", "?", "@".
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#
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# set mmonit http://monit:monit@192.168.1.10:8080/collector
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# # and register without credentials # Don't register credentials
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#
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#
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## Monit by default uses the following format for alerts if the the mail-format
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## statement is missing::
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## --8<--
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## set mail-format {
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## from: Monit <monit@$HOST>
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## subject: monit alert -- $EVENT $SERVICE
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## message: $EVENT Service $SERVICE
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## Date: $DATE
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## Action: $ACTION
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## Host: $HOST
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## Description: $DESCRIPTION
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##
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## Your faithful employee,
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## Monit
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## }
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## --8<--
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##
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## You can override this message format or parts of it, such as subject
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## or sender using the MAIL-FORMAT statement. Macros such as $DATE, etc.
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## are expanded at runtime. For example, to override the sender, use:
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#
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# set mail-format { from: monit@foo.bar }
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#
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#
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## You can set alert recipients whom will receive alerts if/when a
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## service defined in this file has errors. Alerts may be restricted on
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## events by using a filter as in the second example below.
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#
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# set alert sysadm@foo.bar # receive all alerts
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#
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## Do not alert when Monit starts, stops or performs a user initiated action.
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## This filter is recommended to avoid getting alerts for trivial cases.
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#
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# set alert your-name@your.domain not on { instance, action }
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#
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#
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## Monit has an embedded HTTP interface which can be used to view status of
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## services monitored and manage services from a web interface. The HTTP
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## interface is also required if you want to issue Monit commands from the
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## command line, such as 'monit status' or 'monit restart service' The reason
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## for this is that the Monit client uses the HTTP interface to send these
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## commands to a running Monit daemon. See the Monit Wiki if you want to
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## enable SSL for the HTTP interface.
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#
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set httpd unixsocket /var/run/monit.sock and
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allow localhost # allow localhost to connect to the server and
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#
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###############################################################################
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## Services
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###############################################################################
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##
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## Check general system resources such as load average, cpu and memory
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## usage. Each test specifies a resource, conditions and the action to be
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## performed should a test fail.
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#
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# check system $HOST
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# if loadavg (1min) > 4 then alert
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# if loadavg (5min) > 2 then alert
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# if cpu usage > 95% for 10 cycles then alert
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# if memory usage > 75% then alert
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# if swap usage > 25% then alert
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#
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#
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## Check if a file exists, checksum, permissions, uid and gid. In addition
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## to alert recipients in the global section, customized alert can be sent to
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## additional recipients by specifying a local alert handler. The service may
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## be grouped using the GROUP option. More than one group can be specified by
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## repeating the 'group name' statement.
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#
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# check file apache_bin with path /usr/local/apache/bin/httpd
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# if failed checksum and
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# expect the sum 8f7f419955cefa0b33a2ba316cba3659 then unmonitor
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# if failed permission 755 then unmonitor
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# if failed uid root then unmonitor
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# if failed gid root then unmonitor
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# alert security@foo.bar on {
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# checksum, permission, uid, gid, unmonitor
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# } with the mail-format { subject: Alarm! }
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# group server
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#
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#
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## Check that a process is running, in this case Apache, and that it respond
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## to HTTP and HTTPS requests. Check its resource usage such as cpu and memory,
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## and number of children. If the process is not running, Monit will restart
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## it by default. In case the service is restarted very often and the
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## problem remains, it is possible to disable monitoring using the TIMEOUT
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## statement. This service depends on another service (apache_bin) which
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## is defined above.
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#
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# check process apache with pidfile /usr/local/apache/logs/httpd.pid
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# start program = "/etc/init.d/httpd start" with timeout 60 seconds
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# stop program = "/etc/init.d/httpd stop"
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# if cpu > 60% for 2 cycles then alert
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# if cpu > 80% for 5 cycles then restart
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# if totalmem > 200.0 MB for 5 cycles then restart
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# if children > 250 then restart
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# if loadavg(5min) greater than 10 for 8 cycles then stop
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# if failed host www.tildeslash.com port 80 protocol http
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# and request "/somefile.html"
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# then restart
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# if failed port 443 protocol https with timeout 15 seconds then restart
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# if 3 restarts within 5 cycles then unmonitor
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# depends on apache_bin
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# group server
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#
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#
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## Check filesystem permissions, uid, gid, space and inode usage. Other services,
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## such as databases, may depend on this resource and an automatically graceful
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## stop may be cascaded to them before the filesystem will become full and data
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## lost.
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#
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# check filesystem datafs with path /dev/sdb1
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# start program = "/bin/mount /data"
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# stop program = "/bin/umount /data"
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# if failed permission 660 then unmonitor
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# if failed uid root then unmonitor
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# if failed gid disk then unmonitor
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# if space usage > 80% for 5 times within 15 cycles then alert
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# if space usage > 99% then stop
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# if inode usage > 30000 then alert
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# if inode usage > 99% then stop
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# group server
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#
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#
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## Check a file's timestamp. In this example, we test if a file is older
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## than 15 minutes and assume something is wrong if its not updated. Also,
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## if the file size exceed a given limit, execute a script
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#
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# check file database with path /data/mydatabase.db
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# if failed permission 700 then alert
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# if failed uid data then alert
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# if failed gid data then alert
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# if timestamp > 15 minutes then alert
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# if size > 100 MB then exec "/my/cleanup/script" as uid dba and gid dba
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#
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#
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## Check directory permission, uid and gid. An event is triggered if the
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## directory does not belong to the user with uid 0 and gid 0. In addition,
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## the permissions have to match the octal description of 755 (see chmod(1)).
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#
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# check directory bin with path /bin
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# if failed permission 755 then unmonitor
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# if failed uid 0 then unmonitor
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# if failed gid 0 then unmonitor
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#
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#
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## Check a remote host availability by issuing a ping test and check the
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## content of a response from a web server. Up to three pings are sent and
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## connection to a port and an application level network check is performed.
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#
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# check host myserver with address 192.168.1.1
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# if failed ping then alert
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# if failed port 3306 protocol mysql with timeout 15 seconds then alert
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# if failed port 80 protocol http
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# and request /some/path with content = "a string"
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# then alert
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#
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#
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## Check a network link status (up/down), link capacity changes, saturation
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## and bandwidth usage.
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#
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# check network public with interface eth0
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# if failed link then alert
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# if changed link then alert
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# if saturation > 90% then alert
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# if download > 10 MB/s then alert
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# if total uploaded > 1 GB in last hour then alert
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#
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#
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## Check custom program status output.
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#
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# check program myscript with path /usr/local/bin/myscript.sh
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# if status != 0 then alert
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#
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#
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###############################################################################
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## Includes
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###############################################################################
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##
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## It is possible to include additional configuration parts from other files or
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## directories.
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#
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include /etc/monit/conf.d/*
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include /etc/monit/conf-enabled/*
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#
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check filesystem root-overlay with path /
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if space usage > 90% for 5 times within 10 cycles then alert
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check filesystem var-log with path /var/log
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if space usage > 90% for 5 times within 10 cycles then alert
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check system $HOST
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if memory usage > 90% for 5 times within 10 cycles then alert
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if cpu usage (user) > 90% for 5 times within 10 cycles then alert
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if cpu usage (system) > 90% for 5 times within 10 cycles then alert
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check process rsyslog with pidfile /var/run/rsyslogd.pid
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start program = "/bin/systemctl start rsyslog.service"
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stop program = "/bin/systemctl stop rsyslog.service"
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if totalmem > 800 MB for 5 times within 10 cycles then restart
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