Supervisor installation and use

supervisord Install and use

supervisord brief introduction :

supervisord It's a c/s Mode process manager , It can be used to monitor the progress of applications , And it can manage the application start/stop/restart/reload And so on .

install supervisord:

[email protected]:~# apt-get install supervisord -y #apt install supervisord
[email protected]:~# supervisord -v #supervisord edition 
3.3.1

supervisord The configuration file :

supervisord Default path of configuration file :/etc/supervisor/supervisord.conf
[email protected]:~# vim /etc/supervisor/supervisord.conf

; supervisor config file

[unix_http_server]
file=/var/run/supervisor.sock   ; (the path to the socket file)
chmod=0700                       ; sockef file mode (default 0700)

[supervisord]
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)

; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

[supervisorctl]
serverurl=unix:///var/run/supervisor.sock ; use a unix:// URL  for a unix socket

; The [include] section can just contain the "files" setting.  This
; setting can list multiple files (separated by whitespace or
; newlines).  It can also contain wildcards.  The filenames are
; interpreted as relative to this file.  Included files *cannot*
; include files themselves.

[include]
files = /etc/supervisor/conf.d/*.conf   # Process monitoring configuration path 

[inet_http_server]     #web Page port 
port=*:9080            #web Page address :9080 or *:9080
username=admin         #web User name and password of the page 
password=admin

supervisord Monitor process Profile :

# Configure monitored applications :
[email protected]:~# vim /etc/supervisor/conf.d/prometheus.conf
# User program is prometheus
[program:prometheus]
# Start command , Out of commission nohup Wait for the background to run the command, otherwise the application will restart indefinitely 
command=/usr/local/prometheus/prometheus --config.file=/usr/local/prometheus/prometheus.yml
autostart=true  # Auto start 
autorestart=true  # Automatic restart 
process_name=prometheus  # Process name 
startretries=5  # Number of attempts to start 

start-up supervisord Program :

[email protected]:~# systemctl start supervisor.service #

open http://IP:9080, Enter the user name and password, and you can go to web Page view monitored applications :

supervisordctl Command line

command	Parameters	effect
supervisorctl	stop program:name	Stop an application in the configuration file
supervisorctl	start program:name	Start an application in the configuration file
supervisorctl	restart program:name	Restart an application in the configuration file
supervisorctl	stop all	Stop the whole process
supervisorctl	relod	Load a new configuration file and start the application
supervisorctl	update	Load a new configuration file to start , Do not restart the process without changing
supervisorctl	tail program:name	Check the application log

[email protected]:~# supervisorctl start prometheus
prometheus: started
[email protected]:~# supervisorctl stop prometheus
prometheus: stopped
[email protected]:~#