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Supervisord进程管家

發(fā)布時(shí)間：2023/11/29 编程问答 29 豆豆

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Supervisord進(jìn)程管家

Supervisord是一個(gè)守護(hù)進(jìn)程的工具，當(dāng)進(jìn)程意外終止或服務(wù)器掉電起來(lái)后，希望進(jìn)程能夠自動(dòng)運(yùn)行，supervisord可以很好的為我們做這件事情。同時(shí)supervisord也自帶監(jiān)控界面，可以通過(guò)瀏覽器靈活的查看、操作。

以安徽storm快數(shù)據(jù)系統(tǒng)為例，20臺(tái)服務(wù)器總計(jì)268個(gè)進(jìn)程（不包括CDH hadoop集群進(jìn)程），全部由supervisord接管。

1）? 首先安裝meld3和supervisor：

下載地址

https://pypi.python.org/pypi/meld3

https://pypi.python.org/pypi/supervisor

tar xfz meld3-1.0.2.tar.gz

cd meld3-1.0.2

python setup.py install

python setup.py install安裝報(bào)錯(cuò)

[root@localhost meld3-1.0.2]# python setup.py install

Traceback (most recent call last):

File "setup.py", line 1, in ?

from setuptools import setup

ImportError: No module named setuptools

解決辦法

http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz
tar zxvf setuptools-0.6c11.tar.gz
cd setuptools-0.6c11
python setup.py build
python setup.py install

tar xfz supervisor-3.2.3.tar.gz

cd supervisor-3.2.3

python setup.py install

2）生成配置文件：

echo_supervisord_conf > /etc/supervisord.conf

3）修改配置文件，并在末尾添加app守護(hù)：

vi /etc/supervisord.conf

末尾添加app信息：

[program:storm_nimbus]

user=inas

autorestart=true

directory=/home/inas/storm/bin

command=/home/inas/storm/bin/storm nimbus

[program:storm_ui]

user=inas

autorestart=true

directory=/home/inas/storm/bin

command=/home/inas/storm/bin/storm ui

[program:storm_supervisor]

user=inas

autorestart=true

directory=/home/inas/storm/bin

command=/home/inas/storm/bin/storm supervisor

附錄/etc/supervisord.conf? （安徽樣例）

4）添加自啟動(dòng)服務(wù)腳本：

vi /etc/init.d/supervisord

詳見(jiàn)附錄/etc/init.d/supervisord

5）生成日志目錄并添加到服務(wù)里：

mkdir -p /var/log/supervisor

chmod +x /etc/init.d/supervisord

chkconfig --add supervisord

chkconfig --list supervisord

6）相關(guān)命令：

service supervisord start|stop|status|reload|restart

supervisorctl status

supervisorctl start xxx

supervisorctl stop xxx

supervisorctl update

7）監(jiān)控頁(yè)面（如需要安全性，也可以設(shè)置賬號(hào)）：

http://x.x.x.x:9001

8）FAQ：

Q）由supervisord守護(hù)的進(jìn)程條件？

A）啟動(dòng)命令中不能包含daemon或&后臺(tái)符來(lái)運(yùn)行即可。

Q）如果/etc/supervisord.conf里新增加了app，需要重啟supervisord？

A）可以通過(guò)service supervisord restart來(lái)重啟所有app;

也可以通過(guò)supervisorctl update命令來(lái)運(yùn)行新增的app，而原有未改動(dòng)的app不受影響。

附錄1：

/etc/supervisord.conf文件樣例：

; 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".

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

[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=0.0.0.0:9001????? ???; (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/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)

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

logfile_backups=10?????????? ; (num of main logfile rotation backups;default 10)

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

pidfile=/var/run/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 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:///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 http_username if set

;password=123??????????????? ; should be same as http_password if set

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

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

; The below sample program section 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 (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 (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 below sample eventlistener section shows all possible

; eventlistener subsection values, create one or more 'real'

; eventlistener: sections to be able to handle event notifications

; sent by supervisor.

;[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