标签：des style blog http io color ar os 使用
作者：zhanhailiang 日期：2014-11-02
PM2是Node.js应用程序的进程管理管理，目前已在生产环境被普遍使用，提供以下特性：
详情请见：
接下来介绍PM2的基本使用方法：
1. 安装PM2：
[root@~/wade/git/node-lessons/lesson1]# npm install pm2 -g
2. PM2功能集：
[root@~/wade/git/node-lessons/lesson1]# pm2 -h
Usage: pm2 [cmd] app
Commands:
start [options] <file|json|stdin>
start and daemonize an app
deploy <file|environment>
deploy your json
startOrRestart <json>
start or restart JSON file
startOrReload <json>
start or gracefully reload JSON file
startOrGracefulReload <json>
start or gracefully reload JSON file
stop [options] <id|name|all|json|stdin>
stop a process (to start it again, do pm2 restart <app>)
restart [options] <id|name|all|json|stdin>
restart a process
reload <name|all>
reload processes (note that its for app using HTTP/HTTPS)
gracefulReload <name|all>
gracefully reload a process. Send a "shutdown" message to close all connections.
delete <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
interact [secret_key] [public_key] [machine_name]
agent actions for keymetrics.io
killInteract
stop agent
infoInteract
get information about agent
web
launch an health API on port 9615
dump
dump all processes for resurrecting them later
save
(alias) dump all processes for resurrecting them later
resurrect
resurrect previously dumped processes
startup <platform>
auto resurrect process at startup. [platform] = ubuntu, centos, gentoo or systemd
generate
generate an ecosystem.json configuration file
ecosystem
generate an ecosystem.json configuration file
reset <name|id|all>
reset counters for process
describe <id>
describe all parameters of a process id
desc <id>
describe all parameters of a process id
list
list all processes
ls
(alias) list all processes
l
(alias) list all processes
status
(alias) list all processes
jlist
list all processes in JSON format
prettylist
print json in a prettified JSON
monit
launch termcaps monitoring
m
(alias) launch termcaps monitoring
flush
flush logs
reloadLogs
reload all logs
logs [id|name]
stream logs file. Default stream all logs
ilogs
advanced interface to display logs
kill
kill daemon
*
Options:
-h, --help output usage information
-V, --version output the version number
-v --version get version
-s --silent hide all messages
-m --mini-list display a compacted list without formatting
-f --force force actions
-n --name <name> set a <name> for script
-i --instances <number> launch [number] instances (for networked app)(load balanced)
-o --output <path> specify out log file
-e --error <path> specify error log file
-p --pid <pid> specify pid file
--max-memory-restart <memory> specify max memory amount used to autorestart (in megaoctets)
--env <environment_name> specify environment to get specific env variables (for JSON declaration)
-x --execute-command execute a program using fork system
-u --user <username> define user when generating startup script
-c --cron <cron_pattern> restart a running process based on a cron pattern
-w --write write configuration in local folder
--interpreter <interpreter> the interpreter pm2 should use for executing app (bash, python...)
--log-date-format <momentjs format> add custom prefix timestamp to logs
--no-daemon run pm2 daemon in the foreground if it doesn‘t exist already
--merge-logs merge logs from different instances but keep error and out separated
--watch watch application folder for changes
--node-args <node_args> space delimited arguments to pass to node in cluster mode - e.g. --node-args="--debug=7001 --trace-deprecation"
--run-as-user <run_as_user> The user or uid to run a managed process as
--run-as-group <run_as_group> The group or gid to run a managed process as
--no-color skip colors
Basic Examples:
Start an app using all CPUs available + set a name :
$ pm2 start app.js -i max --name "api"
Restart the previous app launched, by name :
$ pm2 restart api
Stop the app :
$ pm2 stop api
Restart the app that is stopped :
$ pm2 restart api
Remove the app from the process list :
$ pm2 delete api
Kill daemon pm2 :
$ pm2 kill
Update pm2 :
$ npm install pm2@latest -g ; pm2 updatePM2
More examples in https://github.com/Unitech/pm2#usagefeatures
Deployment help:
$ pm2 deploy help
3. 使用PM2管理你的第一个Demo:
[root@~/wade/git/node-lessons/lesson1]# pm2 start app.js --name ‘firstapp‘ Starting PM2 daemon... [PM2] Process app.js launched ┌──────────┬────┬──────┬──────┬────────┬───────────┬────────┬─────────────┬─────────────┐ │ App name │ id │ mode │ PID │ status │ restarted │ uptime │ memory │ watching │ ├──────────┼────┼──────┼──────┼────────┼───────────┼────────┼─────────────┼─────────────┤ │ firstapp │ 0 │ fork │ 6616 │ online │ 0 │ 0s │ 11.145 MB │ unactivated │ └──────────┴────┴──────┴──────┴────────┴───────────┴────────┴─────────────┴─────────────┘ Use `pm2 desc[ribe] <id>` to get more details [root@~/wade/git/node-lessons/lesson1]# pm2 list ┌──────────┬────┬──────┬──────┬────────┬───────────┬────────┬─────────────┬─────────────┐ │ App name │ id │ mode │ PID │ status │ restarted │ uptime │ memory │ watching │ ├──────────┼────┼──────┼──────┼────────┼───────────┼────────┼─────────────┼─────────────┤ │ firstapp │ 0 │ fork │ 6616 │ online │ 0 │ 10s │ 18.539 MB │ unactivated │ └──────────┴────┴──────┴──────┴────────┴───────────┴────────┴─────────────┴─────────────┘ Use `pm2 desc[ribe] <id>` to get more details ^C[root@~/wade/git/node-lessons/lesson1]# pm2 desc firstapp Describing process with pid 0 - name firstapp ┌───────────────────┬────────────────────────────────────────────┐ │ status │ online │ │ name │ firstapp │ │ id │ 0 │ │ path │ /root/wade/git/node-lessons/lesson1/app.js │ │ args │ │ │ exec cwd │ /root/wade/git/node-lessons/lesson1 │ │ error log path │ /root/.pm2/logs/firstapp-err-0.log │ │ out log path │ /root/.pm2/logs/firstapp-out-0.log │ │ pid path │ /root/.pm2/pids/firstapp-0.pid │ │ mode │ fork_mode │ │ node v8 arguments │ │ │ watch & reload │ ? │ │ interpreter │ node │ │ restarts │ 0 │ │ unstable restarts │ 0 │ │ uptime │ 58s │ │ created at │ 2014-11-02T08:43:36.834Z │ └───────────────────┴────────────────────────────────────────────┘ [root@~/wade/git/node-lessons/lesson1]# pm2 stop firstapp [PM2] Stopping firstapp [PM2] stopProcessId process id 0 ┌──────────┬────┬──────┬──────┬─────────┬───────────┬────────┬────────┬─────────────┐ │ App name │ id │ mode │ PID │ status │ restarted │ uptime │ memory │ watching │ ├──────────┼────┼──────┼──────┼─────────┼───────────┼────────┼────────┼─────────────┤ │ firstapp │ 0 │ fork │ 6616 │ stopped │ 0 │ 0 │ 0 B │ unactivated │ └──────────┴────┴──────┴──────┴─────────┴───────────┴────────┴────────┴─────────────┘ Use `pm2 desc[ribe] <id>` to get more details [root@~/wade/git/node-lessons/lesson1]# pm2 kill [PM2] Stopping PM2... [PM2] Deleting all process [PM2] deleteProcessId process id 0 [PM2] All processes has been stopped and deleted [PM2] PM2 stopped
推荐阅读：
标签：des style blog http io color ar os 使用
原文地址：http://blog.csdn.net/billfeller/article/details/40711309
