Node.js 学习（七）Node项目部署工具之forever

平常无论是使用命令行还是终端通过node app.js启动项目时,当命令行或终端关闭时项目也就随之关闭了;
forever则可以在cmd或ssh连接断开时,让项目一直运行,而且可以在项目崩溃时自动重启





安装forever,forever是npm中的一个包

sudo npm install -g forever

forever的帮助手册

$ 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 <key> <val>     Sets the specified forever config <key>
clear <key>         Clears the specified forever config <key>
logs                Lists log files for all forever processes
logs <script|index> Tails the logs for <script|index>
columns add <col>   Adds the specified column to the output in `forever list`
columns rm <col>    Removed the specified column from the output in `forever list`
columns set <cols>  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)
--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

使用forever启动项目

forever start app.js

使用forever停止项目

forever stop app.js

列出所有通过forever管理的项目

forever list

监视项目中的文件,当文件有变动时重启项目

forever -w start app.js

输出日志和错误

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forever start -l forever.log -o out.log -e err.log app.js