forever 让nodejs程序daemon模式运行

正常情况下
node server.js 启动后，如果关闭cmd或者是session 会话，同时也会关闭 nodejs， 如果我们想保持nodejs
继续执行， 就必须要 以守护进程方式启动， 可以使用nohup ，但是 个人觉得forever会更好用一点

1.为啥使用forever不使用nohup，我自己使用nohup出现情况是nohup经常会死掉

安装

#npm install forever -g

QQ截图20170209110950.png

forever -h 查看帮助信息

[root@iZbp13s6vrw6guuziywyc7Z wwwroot]# forever -h
help:    usage: forever [action] [options] SCRIPT [script-options]
help:    
help:    Monitors the script specified in the current process or as a daemon
help:    
help:    actions:
help:      start               Start SCRIPT as a daemon
help:      stop                Stop the daemon SCRIPT by Id|Uid|Pid|Index|Script
help:      stopall             Stop all running forever scripts
help:      restart             Restart the daemon SCRIPT
help:      restartall          Restart all running forever scripts
help:      list                List all running forever scripts
help:      config              Lists all forever user configuration
help:      set <key> <val>     Sets the specified forever config <key>
help:      clear <key>         Clears the specified forever config <key>
help:      logs                Lists log files for all forever processes
help:      logs <script|index> Tails the logs for <script|index>
help:      columns add <col>   Adds the specified column to the output in `forever list`
help:      columns rm <col>    Removed the specified column from the output in `forever list`
help:      columns set <cols>  Set all columns for the output in `forever list`
help:      columns reset       Resets all columns to defaults for the output in `forever list`
help:      cleanlogs           [CAREFUL] Deletes all historical forever log files
help:    
help:    options:
help:      -m  MAX          Only run the specified script MAX times
help:      -l  LOGFILE      Logs the forever output to LOGFILE
help:      -o  OUTFILE      Logs stdout from child script to OUTFILE
help:      -e  ERRFILE      Logs stderr from child script to ERRFILE
help:      -p  PATH         Base path for all forever related files (pid files, etc.)
help:      -c  COMMAND      COMMAND to execute (defaults to node)
help:      -a, --append     Append logs
help:      -f, --fifo       Stream logs to stdout
help:      -n, --number     Number of log lines to print
help:      --pidFile        The pid file
help:      --uid            Process uid, useful as a namespace for processes (must wrap in a string)
help:                       e.g. forever start --uid "production" app.js
help:                           forever stop production
help:      --sourceDir      The source directory for which SCRIPT is relative to
help:      --workingDir     The working directory in which SCRIPT will execute
help:      --minUptime      Minimum uptime (millis) for a script to not be considered "spinning"
help:      --spinSleepTime  Time to wait (millis) between launches of a spinning script.
help:      --colors         --no-colors will disable output coloring
help:      --plain          alias of --no-colors
help:      -d, --debug      Forces forever to log debug output
help:      -v, --verbose    Turns on the verbose messages from Forever
help:      -s, --silent     Run the child script silencing stdout and stderr
help:      -w, --watch      Watch for file changes
help:      --watchDirectory Top-level directory to watch from
help:      --watchIgnore    To ignore pattern when watch is enabled (multiple option is allowed)
help:      -t, --killTree   Kills the entire child process tree on `stop`
help:      --killSignal     Support exit signal customization (default is SIGKILL)
help:                       used for restarting script gracefully e.g. --killSignal=SIGTERM
help:      -h, --help       You're staring at it
help:    
help:    [Long Running Process]
help:      The forever process will continue to run outputting log messages to the console.
help:      ex. forever -o out.log -e err.log my-script.js
help:    
help:    [Daemon]
help:      The forever process will run as a daemon which will make the target process start
help:      in the background. This is extremely useful for remote starting simple node.js scripts
help:      without using nohup. It is recommended to run start with -o -l, & -e.
help:      ex. forever start -l forever.log -o out.log -e err.log my-daemon.js
help:          forever stop my-daemon.js
help:    

基本操作

forever list
forever start $script
forever stop $pid