pm2的简单使用
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2022-06-11 18:56:35
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一、PM2 介绍
PM2简单来说可以理解为一个进程管理器，通过这个管理器你可以更方便的管控你的node进程。详细介绍可以到官方文档查看 pm2官方文档；
二、安装 & 使用
安装PM2之前首先需要确保你安装好了node环境，针对node环境的安装这里我就不多说了，需要了解的朋友可以查阅我的另一篇文章：
链接跳转：Nodejs的安装
开始安装
打开cmd命令窗口键入以下命令进行安装：
npm install pm2 -g
安装成功后与下图一致,能够查询到版本信息则说明安装成功:
使用
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常用的一些命令和参数：
pm2 start app.js //启动进程 pm2 restart app.js //重启进程 pm2 stop app.js //停止进程 pm2 list app.js //查看进程组 pm2 delete app.js //删除进程 -
参数说明：
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–watch：监听应用目录内容的变化，一旦发生变化，自动重启；
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-i --instances：启用多少个实例，可用于负载均衡。如果-i 0或者-i max，则根据当前机器核数确定实例数目。
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–ignore-watch：排除监听的目录/文件，可以是特定的文件名，也可以是正则。
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-n --name：应用的名称。查看应用信息的时候可以用到。
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-o --output
：标准输出日志文件的路径。 -
-e --error
：错误输出日志文件的路径。 -
–interpreter ：the interpreter pm2 should use for executing app (bash, python…)。
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help
C:\Users\admin>pm2 --help Usage: pm2 [cmd] app Options: -V, --version output the version number -v --version print pm2 version -s --silent hide all messages --ext <extensions> watch only this file extensions -n --name <name> set a name for the process in the process list -m --mini-list display a compacted list without formatting --interpreter <interpreter> set a specific interpreter to use for executing app, default: node --interpreter-args <arguments> set arguments to pass to the interpreter (alias of --node-args) --node-args <node_args> space delimited arguments to pass to node -o --output <path> specify log file for stdout -e --error <path> specify log file for stderr -l --log [path] specify log file which gathers both stdout and stderr --log-type <type> specify log output style (raw by default, json optional) --log-date-format <date format> add custom prefix timestamp to logs --time enable time logging --disable-logs disable all logs storage --env <environment_name> specify which set of environment variables from ecosystem file must be injected -a --update-env force an update of the environment with restart/reload (-a <=> apply) -f --force force actions -i --instances <number> launch [number] instances (for networked app)(load balanced) --parallel <number> number of parallel actions (for restart/reload) -p --pid <pid> specify pid file -k --kill-timeout <delay> delay before sending final SIGKILL signal to process --listen-timeout <delay> listen timeout on application reload --max-memory-restart <memory> Restart the app if an amount of memory is exceeded (in bytes) --restart-delay <delay> specify a delay between restarts (in milliseconds) --exp-backoff-restart-delay <delay> specify a delay between restarts (in milliseconds) -x --execute-command execute a program using fork system --max-restarts [count] only restart the script COUNT times -u --user <username> define user when generating startup script --uid <uid> run target script with <uid> rights --gid <gid> run target script with <gid> rights --cwd <path> run target script as <username> --hp <home path> define home path when generating startup script --wait-ip override systemd script to wait for full internet connectivity to launch pm2 --service-name <name> define service name when generating startup script -c --cron <cron_pattern> restart a running process based on a cron pattern -w --write write configuration in local folder --no-daemon run pm2 daemon in the foreground if it doesn't exist already --source-map-support force source map support --only <application-name> with json declaration, allow to only act on one application --disable-source-map-support force source map support --wait-ready ask pm2 to wait for ready event from your app --merge-logs merge logs from different instances but keep error and out separated --watch [paths] watch application folder for changes (default: ) --ignore-watch <folders|files> List of paths to ignore (name or regex) --watch-delay <delay> specify a restart delay after changing files (--watch-delay 4 (in sec) or 4000ms) --no-color skip colors --no-vizion start an app without vizion feature (versioning control) --no-autorestart start an app without automatic restart --no-treekill Only kill the main process, not detached children --no-pmx start an app without pmx --no-automation start an app without pmx --trace enable transaction tracing with km --disable-trace disable transaction tracing with km --attach attach logging after your start/restart/stop/reload --v8 enable v8 data collecting --event-loop-inspector enable event-loop-inspector dump in pmx --deep-monitoring enable all monitoring tools (equivalent to --v8 --event-loop-inspector --trace) -h, --help output usage information Commands: start [options] [name|file|ecosystem|id...] start and daemonize an app trigger <proc_name> <action_name> [params] trigger process action deploy <file|environment> deploy your json startOrRestart <json> start or restart JSON file startOrReload <json> start or gracefully reload JSON file pid [app_name] return pid of [app_name] or all startOrGracefulReload <json> start or gracefully reload JSON file stop [options] <id|name|all|json|stdin...> stop a process restart [options] <id|name|all|json|stdin...> restart a process scale <app_name> <number> scale up/down a process in cluster mode depending on total_number param profile:mem [time] Sample PM2 heap memory profile:cpu [time] Profile PM2 cpu reload <name|all> reload processes (note that its for app using HTTP/HTTPS) id <name> get process id by name inspect <name> inspect a process delete|del <name|id|script|all|json|stdin...> stop and delete a process from pm2 process list sendSignal <signal> <pm2_id|name> send a system signal to the target process ping ping pm2 daemon - if not up it will launch it updatePM2 update in-memory PM2 with local PM2 update (alias) update in-memory PM2 with local PM2 install|module:install [options] <module|git:/> install or update a module and run it forever module:update <module|git:/> update a module and run it forever module:generate [app_name] Generate a sample module in current folder uninstall|module:uninstall <module> stop and uninstall a module package [target] Check & Package TAR type module publish|module:publish [options] [folder] Publish the module you are currently on set [key] [value] sets the specified config <key> <value> multiset <value> multiset eg "key1 val1 key2 val2 get [key] get value for <key> conf [key] [value] get / set module config values config <key> [value] get / set module config values unset <key> clears the specified config <key> report give a full pm2 report for https://github.com/Unitech/pm2/issues link [options] [secret] [public] [name] link with the pm2 monitoring dashboard unlink unlink with the pm2 monitoring dashboard monitor [name] monitor target process unmonitor [name] unmonitor target process open open the pm2 monitoring dashboard plus|register [options] [command] [option] enable pm2 plus login Login to pm2 plus logout Logout from pm2 plus dump|save [options] dump all processes for resurrecting them later cleardump Create empty dump file send <pm_id> <line> send stdin to <pm_id> attach <pm_id> [comman] attach stdin/stdout to application identified by <pm_id> resurrect resurrect previously dumped processes unstartup [platform] disable the pm2 startup hook startup [platform] enable the pm2 startup hook logrotate copy default logrotate configuration ecosystem|init [mode] generate a process conf file. (mode = null or simple) reset <name|id|all> reset counters for process describe <name|id> describe all parameters of a process desc <name|id> (alias) describe all parameters of a process info <name|id> (alias) describe all parameters of a process show <name|id> (alias) describe all parameters of a process env <id> list all environment variables of a process id list|ls list all processes l (alias) list all processes ps (alias) list all processes status (alias) list all processes jlist list all processes in JSON format slist|sysinfos list system infos in JSON prettylist print json in a prettified JSON monit launch termcaps monitoring imonit launch legacy termcaps monitoring dashboard|dash launch dashboard with monitoring and logs flush [api] flush logs reloadLogs reload all logs logs [options] [id|name] stream logs file. Default stream all logs kill kill daemon pull <name> [commit_id] updates repository for a given app forward <name> updates repository to the next commit for a given app backward <name> downgrades repository to the previous commit for a given app deepUpdate performs a deep update of PM2 serve|expose [options] [path] [port] serve a directory over http via port autoinstall examples display pm2 usage examples * C:\Users\admin>- 例子：
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