I am trying to get monit to alert when a file is modified on the file system. I don't want to email anybody, I just want to run a simple script which in this case echoes the date to a file in /tmp
[root etc]# cat /usr/foo/bin/dan #!/usr/bin/env bash echo "$(date): Network Start file changed." > /tmp/dan.out When I start monit and then touch the file I don't see any activity. My poll activity is set for 5 seconds. What am I missing here? Dan +++++++++++++++ File before monit: +++++++++++++++ [root etc]# ls -al /dev/shm/net_started -rw-r--r--. 1 root root 0 Mar 10 06:51 /dev/shm/net_started +++++++++++++++++++++++ Start Monit in the forground and in another window touch the file. /dev/shm/net_started +++++++++++++++++++++++ [root etc]# monit -vv -c /etc/monitrc -I monit: Debug: Adding credentials for user 'admin'. monit: Debug: Adding host allow 'localhost' monit: Debug: Skipping redundant host 'localhost' monit: Debug: Skipping redundant host 'localhost' monit: Debug: Skipping redundant host 'localhost' monit: Debug: Skipping redundant host 'localhost' monit: Debug: Skipping redundant host 'localhost' Runtime constants: Control file = /etc/monitrc Log file = /var/log/monit.log Pid file = /var/run/monit.pid Debug = True Log = True Use syslog = False Is Daemon = True Use process engine = True Poll time = 5 seconds with start delay 0 seconds Expect buffer = 256 bytes Mail from = (not defined) Mail subject = (not defined) Mail message = (not defined) Start monit httpd = True httpd bind address = Any/All httpd portnumber = 3500 httpd signature = True Use ssl encryption = False httpd auth. style = Basic Authentication and Host/Net allow list The service list contains the following entries: File Name = net_started Path = /dev/shm/net_started Monitoring mode = active Existence = if does not exist 1 times within 1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s) then alert Timestamp = if changed 1 times within 1 cycle(s) then exec '/usr/foo/bin/dan' timeout 0 cycle(s) System Name = system_localhost Monitoring mode = active ------------------------------------------------------------------------------- monit: pidfile '/var/run/monit.pid' does not exist Starting monit daemon with http interface at [*:3500] Starting monit HTTP server at [*:3500] monit HTTP server started 'system_localhost' Monit started ^C ++++++++++++++++++++++++++++ Stopped here after touching file and waiting 30 seconds. ++++++++++++++++++++++++++++ Shutting down monit HTTP server monit HTTP server stopped monit daemon with pid [1520] killed 'system_localhost' Monit stopped ++++++++++++++++++++ File date after touching it ++++++++++++++++++++ [root etc]# ls -al /dev/shm/net_started -rw-r--r--. 1 root root 0 Mar 10 07:01 /dev/shm/net_started +++++++++++++++++++ Contents of monit file +++++++++++++++++++ rootr monit.d]# cat test_file.cfg check file net_started with path /dev/shm/net_started if changed timestamp then exec "/usr/foo/bin/dan"
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