linux进程管理工具-supervisor
作者:matrix 被围观: 3,338 次 发布时间:2017-02-13 分类:Linux 零零星星 | 无评论 »
Linux后台守护进程化有nohup,screen命令可一般解决。但突发崩溃情况就不能很好的保证进程在后台的驻留。
supervisor是一个python脚本编写的工具,可以起到很好的管理、监控进程的作用。
安装
Debian类系统安装:
pip install supervisor #建议使用方式 避免旧版本导致的一系列问题
#或者
sudo apt-get install supervisor
选择y
确认操作后即可安装完成。
配置
- 查看supervisord.conf
- supervisord已自动启动
使用ps -aux|grep supervisord
查看supervisord进程信息,-c
参数就是指定使用的配置文件
如图 我这里的配置文件就是/etc/supervisor/supervisord.conf
- supervisord 手动启动
执行supervisord
命令即可启动supervisord工具。
默认会读取/etc/supervisord.conf
配置文件,若不存在可能就需要自己手动创建:
$ echo_supervisord_conf > /etc/supervisord.conf
文件末尾
include
位置是定义需要管理的进程配置信息载入路径:[include] files = /etc/supervisord.d/*.ini
这里表示supervisord会读取/etc/supervisord.d/目录下的所有ini配置文件;这里支持多个文件列表的传入 用空格隔开即可。如:
[include] files = /etc/supervisord.d/*.ini /home/supervisord_conf/*.ini
- supervisord已自动启动
- 创建进程命令配置ini文件
进入
/etc/supervisord.d/
目录,创建ini文件e.g. ws.ini:
文件名称可自定[program:ws] user=www ;执行进程的用户 command=php /home/wwwroot/chat.hhtjim.com/wsServer.php autostart=true ;是否随系统自动启动 autorestart=true ;自动重启 startretries=10 ;启动失败时的最多重试次数 默认3 redirect_stderr = true ; 把 stderr 重定向到 stdout,默认 false stdout_logfile_maxbytes = 20MB ; stdout 日志文件大小,默认 50MB stdout_logfile_backups = 2 ; stdout 日志文件备份数 ; stdout 日志文件,需要注意当指定目录不存在时无法正常启动,所以需要手动创建目录(supervisord 会自动创建日志文件) stdout_logfile = /root/logs/rss2channel_stdout.log
说明:
program 表示自定义的任务名称
command 执行的命令其他配置官方手册:
http://supervisord.org/configuration.html#program-x-section-values
启动
supervisord -c /etc/supervisord.conf
/etc/supervisord.conf为默认的配置文件,可自定
查看
- cli方式
> supervisorctl #进入命令行 > reload #重新载入配置 > status #状态查看
- web页面方式
supervisord.conf文件中需要配置[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))
设置后执行
supervisorctl reload
重启再访问IP:9001
就能监控supervisord的运行状态。
报错
unix:///var/run/supervisor.sock no such file错误
确保已经启动supervisord
进程。
ps -aux|grep supervisord #查看是否存在进程
unix:///tmp/supervisor.sock no such file 错误
解决办法:
vi /etc/supervisord.conf
#把sock文件所在tmp目录的配置修改为/var/run目录
主要修改如下配置:
[unix_http_server]
;file=/tmp/supervisor.sock ; (the path to the socket file)
file=/var/run/supervisor.sock ;
......
[supervisorctl]
;serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socket
serverurl=unix:///var/run/supervisor.sock ; 修改为 /var/run 目录,避免被系统删除
修改操作参考:
http://www.cashqian.net/blog/001472975510127673ea63db9234c4e8293cf43cefcafde000
最后执行更新:
supervisorctl update
socket.py line: 224错误
如果修改上面tmp目录再更新出现错误:
error: <class 'socket.error'>, [Errno 2] No such file or directory: file: /usr/lib64/python2.7/socket.py line: 224
解决:
先执行启动命令:supervisord
再supervisorctl update
如果还是报错,那需要重新安装。因为版本太旧会导致这种问题
uwsgi无法启动
取消或注释uwsgi配置文件中的daemonize
附 使用的supervisord.conf:
; Sample supervisor config file.
[unix_http_server]
file=/var/run/supervisor.sock ; (the path to the socket file)
;chmod=0700 ; sockef 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/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:///var/run/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)
;autorestart=true ; retstart at unexpected quit (default: true)
;startsecs=10 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
;stopsignal=QUIT ; signal used to kill process (default TERM)
;stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
;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)
;autorestart=unexpected ; restart at unexpected quit (default: unexpected)
;startsecs=10 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
;stopsignal=QUIT ; signal used to kill process (default TERM)
;stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
;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_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 ; # of stderr logfile backups (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 below sample group section 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 = /etc/supervisord.d/*.ini
环境变量无法读取
本来在/etc/profile
文件末尾添加环境变量的声明,也执行了source
## production environment
export RUN_ENV="TEST"
但是今天意外发现进程服务无法读取到环境变量信息。
需要配置supervisord
段的environment,让supervisord能正常读取指定环境变量RUN_ENV
[supervisord]
environment=RUN_ENV="%(ENV_RUN_ENV)s"
可以在/etc/supervisord.conf
文件中新增supervisord
,也可以在/etc/supervisord.d/*.ini
中的进程文件中添加
意外FATAL
如果长时间执行有可能会造成意外中断,这里最好做定时检测重启
check.sh
#!/bin/bash
status=`/usr/bin/supervisorctl status rss2channel|awk '{print $2}'`
if [ $status == 'STOPPED' -o $status == 'FATAL' ]; then
/usr/bin/supervisorctl restart rss2channel >/dev/null 2&>1
fi
检测STOPPED
或者 FATAL
状态就执行重启
rss2channel
为配置名称
再配合crontab定时任务 每小时检测
0 */1 * * * /bin/bash /root/check.sh
扩展/修改启动脚本的配置
默认脚本启动目录:/etc/supervisord.d
如果需要新添加启动脚本eth_kline.ini
配置而不想重载reload
所有。可以先执行reread
,再add
就可以了
$ supervisorctl reread
>>> eth_kline: available
$ supervisorctl add eth_kline
>>> eth_kline: added process group
这样即可无痛扩展 不用重启所有已运行的脚本
如果需要修改也差不多 要使用update
命令:
$ supervisorctl reread eth_kline
>>> eth_kline: changed
$ supervisorctl update eth_kline
>>> eth_kline: stopped
>>> eth_kline: updated process group
通配符操作
默认supervisorctl操作的名称不支持通配符 但是可以使用awk来达到效果
比如我想重启所有包含_kline
关键字的进程脚本名 /usr/bin/supervisorctl restart *_kline
,让它匹配*_kline
符合的name进程脚本名,然而supervisorctl不支持。
解决办法:
/usr/bin/supervisorctl restart `/usr/bin/supervisorctl status |awk '{print $1}'|grep -E ".*_kline"`
参考:
http://supervisord.org
http://liyangliang.me/posts/2015/06/using-supervisor/
http://www.tuicool.com/articles/Ejm2u2
http://stackoverflow.com/questions/16171338/supervisord-cant-find-command-in-virtualenv-folder
https://neo1218.github.io/supervisor/
https://blog.csdn.net/qq_27754983/article/details/78782866
https://serverfault.com/questions/511707/supervisord-error-class-socket-error