SIGUSR1

如果是monit管理的进程，需要注意monit有可能会发送SIGUSR1 到进程。
https://github.com/arnaudsj/monit/blob/aa491f6ca2d2dd79abebf1e97b6f3a14fd4453e8/monitor.c

示例

#set poll interval of 5 seconds
set daemon 5 // 5秒走一个cycle。

#set logfile
set logfile /var/opt/log/monit/monit.log

#set the state file for the critical monit daemon
set statefile /var/opt/lib/monit/critical_daemons.state

#monitor the abc status file
检查文件 abc.status, 路径是 /var/opt/lib/monit/abc.status
check file abc.status with path /var/opt/lib/monit/abc.status
if size > 0 B then exec “/opt/share/monit/monit_alarm -d d” // 如果文件大小大于0B，就要执行命令
repeat every 1 cycles // 每一个cycle 都要做
if does not exist for 5 cycles then exec “/usr/bin/touch /var/opt/lib/monit/abc.status” // 如果5个cycle 没有检查到文件，就touch 一下。

帮助

#/bin/monit -h
Usage: monit [options]+ [command]
Options are as follows:
-c file Use this control file
-d n Run as a daemon once per n seconds
-g name Set group name for monit commands
-l logfile Print log information to this file
-p pidfile Use this lock file in daemon mode
-s statefile Set the file monit should write state information to
-I Do not run in background (needed when run from init)
–id Print Monit’s unique ID
–resetid Reset Monit’s unique ID. Use with caution
-B Batch command line mode (do not output tables or colors)
-t Run syntax check for the control file
-v Verbose mode, work noisy (diagnostic output)
-vv Very verbose mode, same as -v plus log stacktrace on error
-H [filename] Print SHA1 and MD5 hashes of the file or of stdin if the
filename is omited; monit will exit afterwards
-V Print version number and patchlevel
-h Print this text
Optional commands are as follows:
start all - Start all services
start - Only start the named service
stop all - Stop all services
stop - Stop the named service
restart all - Stop and start all services
restart - Only restart the named service
monitor all - Enable monitoring of all services
monitor - Only enable monitoring of the named service
unmonitor all - Disable monitoring of all services
unmonitor - Only disable monitoring of the named service
reload - Reinitialize monit
status [name] - Print full status information for service(s)
summary [name] - Print short status information for service(s)
report [up|down|…] - Report state of services. See manual for options
quit - Kill the monit daemon process
validate - Check all services and start if not running
procmatch - Test process matching pattern

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monit：配置/SIGUSR1

文章目录

SIGUSR1

示例

帮助

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