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
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