一、supervisor
1.1 supervisor 介绍
Supervisor 是一个进程管理工具, 当进程中断的时候S upervisor能自动重新启动它, 可以运行在各种 类unix系统上。
Supervisor 是用Python开发的一套通用的进程管理程序,能将一个普通的命令行进程变为后台daemon,并监控进程状态,异常退出时能自动重启。
1.2 supervisor 安装
# 1. 使用epel 仓库进行安装 [root@centos78 ~]# yum install epel-release [root@centos78 ~]# yum install supervisor # 2. 使用 easy_install 安装 [root@centos78 ~]# easy_install supervisor Searching for supervisor Best match: supervisor 3.4.0 Adding supervisor 3.4.0 to easy-install.pth file Installing echo_supervisord_conf script to /usr/bin Installing pidproxy script to /usr/bin Installing supervisorctl script to /usr/bin Installing supervisord script to /usr/bin Using /usr/lib/python2.7/site-packages Processing dependencies for supervisor Finished processing dependencies for supervisor # 3. 生成配置文件 [root@centos78 ~]# mkdir /usr/supervisor [root@centos78 ~]# echo_supervisord_conf > /usr/supervisor/supervisord.conf
1.3 操作命令
[root@centos78 ~]# supervisor supervisorctl supervisord
supervisord: 运行Supervisor时会启动一个进程 supervisord,它负责启动所管理的进程,并将所管理的进程作为自己的子进程来启动,而且可以在所管理的进程出现崩溃时自动重启。
supervisorctl: 命令行管理工具,可以用来执行 stop、start、restart 等命令,来对这些子进程进行管理。
supervisor是所有进程的父进程,管理着启动的子进程,supervisor以子进程的PID来管理子进程,当子进程异常退出时supervisor可以收到相应的信号量。
1.4 启动supervisord
[root@centos78 ~]# supervisord -c /usr/supervisor/supervisord.conf
二、 进程管理
[root@cl-server ~]# cat /etc/supervisord.d/redis.ini [program:redis] command=/usr/local/bin/redis-server /application/redis/redis.conf ### redis.conf 的 daemonize 要设置为 no autostart=true #autorestart=unexpected startsecs=10 startretries=3 user=root #priority=999 redirect_stderr=true ### 重定向stderr到 stdout #stdout_logfile_maxbytes=500MB #stdout_logfile_backups=10 stdout_logfile=/tmp/redis_6379.log #stopasgroup=false #killasgroup=false stopsignal=KILL ### 用来杀死进程的信号 stopwaitsecs=10 ### 发送SIGKILL前的等待时间
2.2 配置详解
;[program:theprogramname] ; 定义一个守护进程 ,比如下面的elasticsearch ;command=/bin/cat ; 启动程序使用的命令,可以是绝对路径或者相对路径 ;process_name=%(program_name)s ; 一个python字符串表达式,用来表示supervisor进程启动的这个的名称,默认值是%(program_name)s ;numprocs=1 ; Supervisor启动这个程序的多个实例,如果numprocs>1,则process_name的表达式必须包含%(process_num)s,默认是1 ;directory=/tmp ; supervisord在生成子进程的时候会切换到该目录 ;umask=022 ; umask for process (default None) ;priority=999 ; 权重,可以控制程序启动和关闭时的顺序,权重越低:越早启动,越晚关闭。默认值是999 ;autostart=true ; 如果设置为true,当supervisord启动的时候,进程会自动启动 ;autorestart=true ; 设置为随 supervisord 重启而重启,值可以是false、true、unexpected。false:进程不会自动重启 ;startsecs=10 ; 程序启动后等待多长时间后才认为程序启动成功,默认是10秒 ;startretries=3 ; supervisord尝试启动一个程序时尝试的次数。默认是3 ;exitcodes=0,2 ; 一个预期的退出返回码,默认是0,2。 ;stopsignal=QUIT ; 当收到stop请求的时候,发送信号给程序,默认是TERM信号,也可以是 HUP, INT, QUIT, KILL, USR1, or USR2 ;stopwaitsecs=10 ; 在操作系统给supervisord发送SIGCHILD信号时等待的时间 ;user=chrism ; 如果supervisord以root运行,则会使用这个设置用户启动子程序 ;redirect_stderr=true ; 如果设置为true,进程则会把标准错误输出到supervisord后台的标准输出文件描述符 ;stdout_logfile=/a/path ; 把进程的标准输出写入文件中,如果stdout_logfile没有设置或者设置为AUTO,则supervisor会自动选择一个文件位置 ;stdout_logfile_maxbytes=1MB ; 标准输出log文件达到多少后自动进行轮转,单位是KB、MB、GB。如果设置为0则表示不限制日志文件大小 ;stdout_logfile_backups=10 ; 标准输出日志轮转备份的数量,默认是10,如果设置为0,则不备份 ;stdout_capture_maxbytes=1MB ; 当进程处于stderr capture mode模式的时候,写入FIFO队列的最大bytes值,单位可以是KB、MB、GB ;stdout_events_enabled=false ; 如果设置为true,当进程在写它的stderr到文件描述符的时候,PROCESS_LOG_STDERR事件会被触发 ;stderr_logfile=/a/path ; 把进程的错误日志输出一个文件中,除非redirect_stderr参数被设置为true ;stderr_logfile_maxbytes=1MB ; 错误log文件达到多少后自动进行轮转,单位是KB、MB、GB。如果设置为0则表示不限制日志文件大小 ;stderr_logfile_backups=10 ; 错误日志轮转备份的数量,默认是10,如果设置为0,则不备份 ;stderr_capture_maxbytes=1MB ; 当进程处于stderr capture mode模式的时候,写入FIFO队列的最大bytes值,单位可以是KB、MB、GB ;stderr_events_enabled=false ; 如果设置为true,当进程在写它的stderr到文件描述符的时候,PROCESS_LOG_STDERR事件会被触发 ;environment=A=1,B=2 ; 一个k/v对的list列表 ;serverurl=AUTO ; 是否允许子进程和内部的HTTP服务通讯,如果设置为AUTO,supervisor会自动的构造一个url - stopasgroup:如果设置为true,则会使supervisor发送停止信号到整个进程组 - killasgroup:如果设置为true,则在给程序发送SIGKILL信号的时候,会发送到整个进程组,它的子进程也会受到影响。
2.3 进程管理
update: 更新新的配置到supervisord(不会重启原来已运行的程序) reload: 载入所有配置文件,并按新的配置启动、管理所有进程(会重启原来已运行的程序) start xxx: 启动某个进程 restart xxx: 重启某个进程 stop xxx: 停止某一个进程(xxx),xxx为[program:theprogramname]里配置的值 stop groupworker: 重启所有属于名为groupworker这个分组的进程(start,restart同理) stop all: 停止全部进程,注:start、restart、stop都不会载入最新的配置文 reread: 当一个服务由自动启动修改为手动启动时执行一下就ok
2.4 资源限制
minfds=1024 和 minprocs=200 两个值要做调整, 被管理的进程受到supervisord的主进程影响。
三、 配置文件
[root@cl-server ~]# cat /etc/supervisord.conf ; Sample supervisor config file. [unix_http_server] file=/var/run/supervisor/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 开启Web查看进程 ;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/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 = supervisord.d/*.ini
标签:10,服务,supervisord,default,stderr,Linux,supervisor,logfile From: https://www.cnblogs.com/kingdomer/p/15697878.html