Management user service like systemd.
- use
$ExecStarCommand > ${SM_DIR}/log/${SERVICE_NAME}.log 2>&1 &command to execute user defined command, stdout and stderr redirected to log file. - use SERVICE_NAME to management service instead of type long command line, the command line saved in ${SM_DIR}/user/*.service file, such as foo.service, SERVICE_NAME is "foo".
- use pid to monitor the status of service, use kill -9 to stop the service.
- (1) copy "sm" command to /usr/bin
- (2) "sm init" to create ${HOME}/sm directory and sub directory.
- (3) put some service file to ${HOME}/sm/user directory, such as:
cat > ${HOME}/sm/user/foo.service <<EOF
[Service]
ExecStart=/usr/bin/tail -f /var/log/system.log
EOF
- (4) "sm enable foo" to enable foo service.
- (5) "sm run foo" to run foo service.
start foo ... /usr/bin/tail -f /var/log/system.log started, pid = 14648.
- (6) "sm status foo" to show status of foo service.
active (running) [foo] -- 14648 /usr/bin/tail -f /var/log/system.log
- (7) "sm kill foo" to stop foo service.
stop foo (pid=14648) ...
usage: sm <r|run|start>|<k|kill|stop>|<re|restart> <service-name>
sm <run-all>|<kill-all>
sm <s|status> [<service-name>]
sm <e|enable>|<d|disable> <service-name>
sm <l|list>
sm exec <service-name> # forgrand run service without in ${SM_DIR}/user directory
sm <init>
$SM_DIR default is $HOME/sm， type sm without arguments will show it.
${SM_DIR}/user/ -- *.service files, defined by user
${SM_DIR}/work/ -- symbol link of *.service, it created or deleted by <enable> and <disable> command,
prohibit manually work in this dir for will be removed automaticlly.
${SM_DIR}/pid/ -- *.pid files, auto generated
${SM_DIR}/log/ -- *.log files, auto generated
service file format:
[Service]
ExecStart=<command> [arguments] -- ONLY ABSOLUTE PATH SUPPORTED.
WorkingDirectory=/home/user/sm -- OPTIONAL, default is ${SM_DIR} when not set
Restart=never -- OPTIONAL, default is never, set always will be restart when sm-monitor is running
Auto Restart service when crash:
(1) sm enable sm-monitor # sm init will generate $HOME/sm/user/sm-monitor.service and enable it
(2) sm run sm-monitor
(3) add Restart=always to foo.service
if foo crash, sm-monitor while restart it, checked every 5 minutes.
don't worry about sm kill <service-name>, it will not be restart automaticlly.
Use systemd monitor the serivce:
/usr/bin/sm init
sudo cp ~/sm/user/sm-monitor.service /lib/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable sm-monitor
sudo systemctl start sm-monitor
sudo systemctl status sm-monitor
Content of sm-monitor.service:
[Service]
ExecStart=/usr/bin/sm monitor
Restart=always
User={username}
[Install]
WantedBy=default.target
enable a service prefix with a sub-dir, it will create symbol link in sub-dir of work directory. user directory not support sub-dir. it can be run-all or kill-all independent, example:
- (1) sm enable test/foo
enable /Users/renren/sm/user/foo.service to /Users/renren/sm/work/test/foo.service
- (2) sm enable test/bar
- (3) sm run-all test
start all service in test sub directory
- (4) sm kill-all nosub
will stop-all service in work directory without sub-directory.
usage(with more description): sm <r|run|start>|<k|kill|stop>|<re|restart> [work-subdir-name/]<service-name>
sm <run-all|start-all>|<kill-all|stop-app> [<work-subdir-name>|nosub]
sm <s|status> [[work-subdir-name/]<service-name>|<work-subdir-name>|nosub]
sm <e|enable>|<d|disable> [work-subdir-name/]<service-name>