使用forever在ssh中管理node应用

通常我们会使用ssh工具连接远程的云主机部署运行web应用，但是当我们断开ssh回话后，应用也随之断开，那么有什么方法能使得应用不受ssh断开的影响呢？当然有方法！

一种方法大家可以参考《Linux下使Shell 命令脱离终端在后台运行》。

今天我们主要来介绍怎么使用forever管理node应用。

安装

npm install -g forever

使用

• 启动应用

forever start app.js

• 停止应用

forever stop app.js

更多参数

$ forever --help
  usage: forever [action] [options] SCRIPT [script-options]

  Monitors the script specified in the current process or as a daemon

  actions:
    start               Start SCRIPT as a daemon
    stop                Stop the daemon SCRIPT by Id|Uid|Pid|Index|Script
    stopall             Stop all running forever scripts
    restart             Restart the daemon SCRIPT
    restartall          Restart all running forever scripts
    list                List all running forever scripts
    config              Lists all forever user configuration
    set       Sets the specified forever config 
    clear          Clears the specified forever config 
    logs                Lists log files for all forever processes
    logs  Tails the logs for 
    columns add    Adds the specified column to the output in `forever list`
    columns rm     Removed the specified column from the output in `forever list`
    columns set   Set all columns for the output in `forever list`
    cleanlogs           [CAREFUL] Deletes all historical forever log files

  options:
    -m  MAX          Only run the specified script MAX times
    -l  LOGFILE      Logs the forever output to LOGFILE
    -o  OUTFILE      Logs stdout from child script to OUTFILE
    -e  ERRFILE      Logs stderr from child script to ERRFILE
    -p  PATH         Base path for all forever related files (pid files, etc.)
    -c  COMMAND      COMMAND to execute (defaults to node)
    -a, --append     Append logs
    -f, --fifo       Stream logs to stdout
    -n, --number     Number of log lines to print
    --pidFile        The pid file
    --uid            Process uid, useful as a namespace for processes (must wrap in a string)
                     e.g. forever start --uid "production" app.js
                         forever stop production
    --sourceDir      The source directory for which SCRIPT is relative to
    --workingDir     The working directory in which SCRIPT will execute
    --minUptime      Minimum uptime (millis) for a script to not be considered "spinning"
    --spinSleepTime  Time to wait (millis) between launches of a spinning script.
    --colors         --no-colors will disable output coloring
    --plain          Disable command line colors
    -d, --debug      Forces forever to log debug output
    -v, --verbose    Turns on the verbose messages from Forever
    -s, --silent     Run the child script silencing stdout and stderr
    -w, --watch      Watch for file changes
    --watchDirectory Top-level directory to watch from
    --watchIgnore    To ignore pattern when watch is enabled (multiple option is allowed)
    -t, --killTree   Kills the entire child process tree on `stop`
    --killSignal     Support exit signal customization (default is SIGKILL),
                     used for restarting script gracefully e.g. --killSignal=SIGTERM
    -h, --help       You're staring at it

  [Long Running Process]
    The forever process will continue to run outputting log messages to the console.
    ex. forever -o out.log -e err.log my-script.js

  [Daemon]
    The forever process will run as a daemon which will make the target process start
    in the background. This is extremely useful for remote starting simple node.js scripts
    without using nohup. It is recommended to run start with -o -l, & -e.
    ex. forever start -l forever.log -o out.log -e err.log my-daemon.js
        forever stop my-daemon.js

参考： https://github.com/foreverjs/forever