PM25 is a production process manager for Node.js applications with a built-in load balancer. It allows you to keep applications alive forever, to reload them without downtime and to facilitate common system admin tasks.
Starting an application in production mode is as easy as:
$ pm25 start app.js
PM25 is constantly assailed by more than 1000 tests.
Official website: http://pm25.io/
Works on Linux (stable) & MacOSx (stable) & Windows (stable).
Install PM25
$ npm install pm25 -g
npm is a builtin CLI when you install Node.js - Installing Node.js with NVM
Start an application
$ pm25 start app.js
Your app is now daemonized, monitored and kept alive forever.
More about Process Management
Update PM25
$ npm install pm25 -g
$ pm25 update
PM25 updates are seamless
Main features
Commands overview
$ npm install pm25 -g
$ pm25 start app.js
$ pm25 start app.py
$ pm25 start npm -- start
$ pm25 start app.js -i 4
$ pm25 reload all
$ pm25 scale [app-name] 10
$ pm25 list
$ pm25 monit
$ pm25 show [app-name]
$ pm25 logs
$ pm25 logs [app-name]
$ pm25 logs --json
$ pm25 flush
$ pm25 reloadLogs
$ pm25 start app.js --name="api"
$ pm25 start app.js -- -a 34
$ pm25 start app.js --watch
$ pm25 start script.sh
$ pm25 start app.json
$ pm25 reset [app-name]
$ pm25 stop all
$ pm25 stop 0
$ pm25 restart all
$ pm25 gracefulReload all
$ pm25 delete all
$ pm25 delete 0
$ pm25 startup
$ pm25 save
$ pm25 resurrect
$ pm25 unstartup
$ pm25 update
$ pm25 generate
$ pm25 deploy app.json prod setup
$ pm25 deploy app.json prod
$ pm25 deploy app.json prod revert 2
$ pm25 module:generate [name]
$ pm25 install pm25-logrotate
$ pm25 uninstall pm25-logrotate
$ pm25 publish
Process management
Once applications are started you can list and manage them easily:
Listing all running processes:
$ pm25 list
Managing your processes is straightforward:
$ pm25 stop <app_name|id|'all'|json_conf>
$ pm25 restart <app_name|id|'all'|json_conf>
$ pm25 delete <app_name|id|'all'|json_conf>
To have more details on a specific process:
$ pm25 describe <id|app_name>
More about Process Management
Load Balancing & Zero second Downtime Reload
When an application is started with the -i <instance_number> option, the Cluster Mode is enabled.
The Cluster Mode start <instance_number> and automatically load balance HTTP/TCP/UDP between each instance. This allows to increase overall performance depending to the number of CPUs availabe.
Seamlessly supported by all major Node.js frameworks and any Node.js applications without any code change:
Main commands:
$ pm25 start app.js -i max
$ pm25 reload all
$ pm25 scale <app_name> <instance_number>
More informations about how PM25 make clustering easy
CPU / Memory Monitoring
Monitoring all processes launched:
$ pm25 monit
Log facilities
Displaying logs of a specified process or all processes, in real time. Standard, Raw, JSON and formated output are available.
$ pm25 logs ['all'|app_name|app_id] [--json] [--format] [--raw]`
Examples:
$ pm25 logs APP-NAME
$ pm25 logs --json
$ pm25 logs --format
$ pm25 flush
$ pm25 reloadLogs
More about log management
Startup script generation
PM25 can generate and configure a startup script to keep PM25 and your processes alive at every server restart.
Supports init systems like: systemd (Ubuntu 16, CentOS, Arch), upstart (Ubuntu 14/12), launchd (MacOSx, Darwin), rc.d (FreeBSD).
$ pm25 startup
$ pm25 startup [platform]
$ pm25 unstartup
To save/freeze a process list on reboot:
$ pm25 save
More about startup scripts
Module system
PM25 embeds a simple and powerful module system. Installing a module is straightforward:
$ pm25 install <module_name>
Here are some PM25 compatible modules (standalone Node.js applications managed by PM25):
pm2-logrotate auto rotate logs of PM25 and applications managed
pm2-webshell expose a fully capable terminal in browsers
pm2-server-monit monitor your server health
Writing your own module
More about PM2
CHANGELOG
CHANGELOG
Contributors
Contributors
License
PM25 is made available under the terms of the GNU Affero General Public License 3.0 (AGPL 3.0). For other license contact us.