supervisor 管理mysql_centos6安裝supervisor程序管理工具,監控nginx,mysql,php-fpm

supervisor 是用python編寫的linux程序管理工具，可以用來把自己寫的腳本變成程序，每時每刻不斷地跑，而中斷時又能自動重新開機，開機運作。

1 - 安裝 setuptools (python2)

yum install python-setuptools

2 - 安裝 supervisor (隻支援python2)

easy_install或者pip安裝，注意supervisor目前隻有python2支援的版本。

easy_install supervisor

檢查是否安裝成功

[[email protected] meld3-0.6.5]# python2.6

Python 2.6.6 (r266:84292, Jul 23 2015, 15:22:56)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import supervisor

>>>

3 - 生成配置檔案

echo_supervisord_conf > /etc/supervisord.conf

如果上面的指令運作報錯(如果不報錯忽略)

Traceback (most recent call last):

File "/usr/bin/echo_supervisord_conf", line 5, in

from pkg_resources import load_entry_point

File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in

working_set.require(__requires__)

File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require

needed = self.resolve(parse_requirements(requirements))

File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve

raise DistributionNotFound(req)

pkg_resources.DistributionNotFound: meld3>=0.6.5

解決方法：進入/usr/lib/python2.6/site-packages/supervisor-3.3.1-py2.6.egg-info/requires.txt 将meld3 >= 0.6.5 這一行注釋掉，再重新執行即可。

4 - 修改配置檔案

vi /etc/supervisord.conf, 修改藍色的部分

; Sample supervisor config file.

;

; For more information on the config file, please see:

; http://supervisord.org/configuration.html

;

; Notes:

;  - Shell expansion ("~" or "$HOME") is not supported.  Environment

;    variables can be expanded using this syntax: "%(ENV_HOME)s".

;  - Quotes around values are not supported, except in the case of

;    the environment= options as shown below.

;  - Comments must have a leading space: "a=b ;comment" not "a=b;comment".

;  - Command will be truncated if it looks like a config file comment, e.g.

;    "command=bash -c 'foo ; bar'" will truncate to "command=bash -c 'foo ".

[unix_http_server]

file=/tmp/supervisor.sock   ; the path to the socket file

;chmod=0700                 ; socket file mode (default 0700)

;chown=nobody:nogroup       ; socket file uid:gid owner

;username=user              ; default is no username (open server)

;password=123               ; default is no password (open server)

;[inet_http_server]         ; inet (TCP) server disabled by default

;port=127.0.0.1:9001        ; ip_address:port specifier, *:port for all iface

;username=user              ; default is no username (open server)

;password=123               ; default is no password (open server)

[supervisord]

logfile=/var/log/supervisord.log ; main log file; default $CWD/supervisord.log

logfile_maxbytes=50MB        ; max main logfile bytes b4 rotation; default 50MB

logfile_backups=10           ; # of main logfile backups; 0 means none, default 10

loglevel=info                ; log level; default info; others: debug,warn,trace

pidfile=/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid

nodaemon=false               ; start in foreground if true; default false

minfds=1024                  ; min. avail startup file descriptors; default 1024

minprocs=200                 ; min. avail process descriptors;default 200

;umask=022                   ; process file creation umask; default 022

;user=chrism                 ; default is current user, required if root

;identifier=supervisor       ; supervisord identifier, default is 'supervisor'

;directory=/tmp              ; default is not to cd during start

;nocleanup=true              ; don't clean up tempfiles at start; default false

;childlogdir=/tmp            ; 'AUTO' child log dir, default $TEMP

;environment=KEY="value"     ; key value pairs to add to environment

;strip_ansi=false            ; strip ansi escape codes in logs; def. false

; The rpcinterface:supervisor 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:x] sections.

[rpcinterface:supervisor]

supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

; The supervisorctl section configures how supervisorctl will connect to

; supervisord.  configure it match the settings in either the unix_http_server

; or inet_http_server section.

[supervisorctl]

serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL  for a unix socket

;serverurl=http://127.0.0.1:9001 ; use an http:// url to specify an inet socket

;username=chris              ; should be same as in [*_http_server] if set

;password=123                ; should be same as in [*_http_server] if set

;prompt=mysupervisor         ; cmd line prompt (default "supervisor")

;history_file=~/.sc_history  ; use readline history if available

; The sample program section below shows all possible program subsection values.

; Create one or more 'real' program: sections to be able to control them under

; supervisor.

;[program:theprogramname]

;command=/bin/cat              ; the program (relative uses PATH, can take args)

;process_name=%(program_name)s ; process_name expr (default %(program_name)s)

;numprocs=1                    ; number of processes copies to start (def 1)

;directory=/tmp                ; directory to cwd to before exec (def no cwd)

;umask=022                     ; umask for process (default None)

;priority=999                  ; the relative start priority (default 999)

;autostart=true                ; start at supervisord start (default: true)

;startsecs=1                   ; # of secs prog must stay up to be running (def. 1)

;startretries=3                ; max # of serial start failures when starting (default 3)

;autorestart=unexpected        ; when to restart if exited after running (def: unexpected)

;exitcodes=0,2                 ; 'expected' exit codes used with autorestart (default 0,2)

;stopsignal=QUIT               ; signal used to kill process (default TERM)

;stopwaitsecs=10               ; max num secs to wait b4 SIGKILL (default 10)

;stopasgroup=false             ; send stop signal to the UNIX process group (default false)

;killasgroup=false             ; SIGKILL the UNIX process group (def false)

;user=chrism                   ; setuid to this UNIX account to run the program

;redirect_stderr=true          ; redirect proc stderr to stdout (default false)

;stdout_logfile=/a/path        ; stdout log path, NONE for none; default AUTO

;stdout_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)

;stdout_logfile_backups=10     ; # of stdout logfile backups (0 means none, default 10)

;stdout_capture_maxbytes=1MB   ; number of bytes in 'capturemode' (default 0)

;stdout_events_enabled=false   ; emit events on stdout writes (default false)

;stderr_logfile=/a/path        ; stderr log path, NONE for none; default AUTO

;stderr_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)

;stderr_logfile_backups=10     ; # of stderr logfile backups (0 means none, default 10)

;stderr_capture_maxbytes=1MB   ; number of bytes in 'capturemode' (default 0)

;stderr_events_enabled=false   ; emit events on stderr writes (default false)

;environment=A="1",B="2"       ; process environment additions (def no adds)

;serverurl=AUTO                ; override serverurl computation (childutils)

; The sample eventlistener section below shows all possible eventlistener

; subsection values.  Create one or more 'real' eventlistener: sections to be

; able to handle event notifications sent by supervisord.

;[eventlistener:theeventlistenername]

;command=/bin/eventlistener    ; the program (relative uses PATH, can take args)

;process_name=%(program_name)s ; process_name expr (default %(program_name)s)

;numprocs=1                    ; number of processes copies to start (def 1)

;events=EVENT                  ; event notif. types to subscribe to (req'd)

;buffer_size=10                ; event buffer queue size (default 10)

;directory=/tmp                ; directory to cwd to before exec (def no cwd)

;umask=022                     ; umask for process (default None)

;priority=-1                   ; the relative start priority (default -1)

;autostart=true                ; start at supervisord start (default: true)

;startsecs=1                   ; # of secs prog must stay up to be running (def. 1)

;startretries=3                ; max # of serial start failures when starting (default 3)

;autorestart=unexpected        ; autorestart if exited after running (def: unexpected)

;exitcodes=0,2                 ; 'expected' exit codes used with autorestart (default 0,2)

;stopsignal=QUIT               ; signal used to kill process (default TERM)

;stopwaitsecs=10               ; max num secs to wait b4 SIGKILL (default 10)

;stopasgroup=false             ; send stop signal to the UNIX process group (default false)

;killasgroup=false             ; SIGKILL the UNIX process group (def false)

;user=chrism                   ; setuid to this UNIX account to run the program

;redirect_stderr=false         ; redirect_stderr=true is not allowed for eventlisteners

;stdout_logfile=/a/path        ; stdout log path, NONE for none; default AUTO

;stdout_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)

;stdout_logfile_backups=10     ; # of stdout logfile backups (0 means none, default 10)

;stdout_events_enabled=false   ; emit events on stdout writes (default false)

;stderr_logfile=/a/path        ; stderr log path, NONE for none; default AUTO

;stderr_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)

;stderr_logfile_backups=10     ; # of stderr logfile backups (0 means none, default 10)

;stderr_events_enabled=false   ; emit events on stderr writes (default false)

;environment=A="1",B="2"       ; process environment additions

;serverurl=AUTO                ; override serverurl computation (childutils)

; The sample group section below shows all possible group values.  Create one

; or more 'real' group: sections to create "heterogeneous" process groups.

;[group:thegroupname]

;programs=progname1,progname2  ; each refers to 'x' in [program:x] definitions

;priority=999                  ; the relative start priority (default 999)

; 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 = supervisord.d/*.ini

5 - 配置啟動檔案

vi /etc/rc.d/init.d/supervisord，寫入配置

#!/bin/bash

#

# supervisord   This scripts turns supervisord on

#

# chkconfig:    - 95 04

#

# description:  supervisor is a process control utility.  It has a web based

#               xmlrpc interface as well as a few other nifty features.

# processname:  supervisord

# config: /etc/supervisord.conf

# pidfile: /var/run/supervisord.pid

#

# source function library

. /etc/rc.d/init.d/functions

RETVAL=0

start() {

echo -n $"Starting supervisord: "

daemon supervisord

RETVAL=$?

echo

[ $RETVAL -eq 0 ] && touch /var/lock/subsys/supervisord

}

stop() {

echo -n $"Stopping supervisord: "

killproc supervisord

echo

[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/supervisord

}

restart() {

stop

start

}

case "$1" in

start)

start

;;

stop)

stop

;;

restart|force-reload|reload)

restart

;;

condrestart)

[ -f /var/lock/subsys/supervisord ] && restart

;;

status)

status supervisord

RETVAL=$?

;;

*)

echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"

exit 1

esac

exit $RETVAL

儲存退出後修改權限為可執行

chmod 755 /etc/rc.d/init.d/supervisord

6 - 啟動supervisor

service supervisord start

設定開機啟動 chkconfig supervisord on

7 - 編寫 nginx.ini腳本

mkdir /etc/supervisord.d

vi /etc/supervisord.d/nginx.ini

[program:nginx]

command=/usr/local/nginx/sbin/nginx -g 'daemon off;'

autostart=true

autorestart=true

user=root

numprocs=1

stdout_logfile=/var/log/supervisor-nginx.log

重新開機service supervisord restart

或者重新載入 service supervisord reload

檢視程序 pstree

8 - 編寫 mysql.ini腳本

注：command=/path/to/pidproxy /path/to/pidfile /path/to/mysqld_safe

vi /etc/supervisord.d/mysql.ini

[program:mysql]

command=/usr/bin/pidproxy /home/www/mysqldata/mysqld_safe.pid /usr/local/mysql/bin/mysqld_safe

autostart=true

autorestart=true

user=root

numprocs=1

stdout_logfile=/var/log/supervisor-mysql.log

重新開機service supervisord restart

或者重新載入 service supervisord reload

檢視程序 pstree

9 - 編寫 php-fpm.ini腳本

注：command=/path/to/pidproxy /path/to/pidfile /path/to/mysqld_safe

vi /etc/supervisord.d/php-fpm.ini

[program:php-fpm]

command=/usr/local/php/sbin/php-fpm --nodaemonize

autostart=true

autorestart=true

user=root

numprocs=1

stdout_logfile=/var/log/supervisor-php-fpm.log

重新開機service supervisord restart

或者重新載入 service supervisord reload

檢視程序 pstree

記得把lnmp開機啟動關閉

[[email protected] ~]# chkconfig nginx off

[[email protected] ~]# chkconfig mysql off

[[email protected] ~]# chkconfig php-fpm off

用supervisor開機啟動nginx mysql,php-fpm

10 - 檢視supervisor日志

當日志檔案沒自動生成的話，可以手動建立   touch /var/log/supervisord.log

tail -f /var/log/supervisord.log

nginx.ini

[program:nginx]

command=/usr/local/nginx/sbin/nginx -g 'daemon off;'autostart=true

autorestart=true

user=root

numprocs=1stdout_logfile=/var/log/supervisor-nginx.log

mysql.ini

[program:mysql]

command=/usr/bin/pidproxy /home/www/mysqldata/mysqld_safe.pid /usr/local/mysql/bin/mysqld_safe

autostart=true

autorestart=true

user=root

numprocs=1stdout_logfile=/var/log/supervisor-mysql.log

php-fpm.ini

[program:php-fpm]

command=/usr/local/php/sbin/php-fpm --nodaemonize

autostart=true

autorestart=true

user=root

numprocs=1stdout_logfile=/var/log/supervisor-php-fpm.log