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1.Supervisor 工具作用？
Supervisor 是用 Python 开发的一套通用的过程管理程序，能将一个一般的命令行过程变为后盾 daemon，并监控过程状态，异样退出时能主动重启。
看之前先明确 Supervisor 有啥用，到底能帮到咱们什么呢？
1. 能够将一些脚本设置为以守护过程的形式始终在后盾运行。
2. 监控过程的运行状况，面对突发状况能及时预警或者重启，防止出现过程挂掉，影响业务的失常运行
2. 装置
装置形式：
1.pip 装置（需装置有 pip）pip install supervisor
2.yum 装置 配置好 yum 源。yum install -y supervisor
装置 supervisor
提醒找不到 supervisor 时，须要 yum install epel-release 先装置 EPEL 源）
装置好应用 supervisord - v 查看版本。
此处应用 yum 装置的 3.4 版本
3. 应用
执行
echo_supervisord_conf > /etc/supervisord.conf
创立一个官网默认的配置文件 (supervisord.conf 主配置文件) 到 etc 目录下。
能够本人依据爱好批改配置文件的设置。
我本人批改了一些配置文件门路，日志门路等。可供大家参考
| ;Sample supervisor config file. | |
| [unix_http_server] | |
| file=/var/supervisor/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/supervisor/log/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/supervisor/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/supervisor/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 = supervisord.d/*.ini | |
| files = /var/supervisor/conf/*.conf |
我的配置文件中，须要在 /var/supervisor 中创立 3 个文件夹，别离是 conf,log,run.
run 文件夹下有 supervisord.pid 和 supervisor.sock
conf 文件夹放配置文件（次配置文件寄存目录）。
log 文件夹放日志文件。
这样能够对立治理 superviosr.
改好配置文件后。
如果启动呢？
装置 superviosr 会主动在 /usr/bin 目录下生成两个命令
应用 supervisord 命令即可启动
supervisord -c /etc/supervisord.conf
而后去 /var/supervisor/conf 目录下，增加对应的子过程配置文件。我的子配置文件如下, 写了具体的正文，能够依据本人需要批改对应的配置我的项目。
| [program:time] ; 项目名称 | |
| directory = /home/wwwroor/test/public ; 程序的启动目录，我的项目根目录的上一级 | |
| command = /usr/local/php/bin/php index.php api/task/test ; 启动命令 | |
| process_name=%(program_name)s_%(process_num)02d | |
| numprocs = 1 ; 开启的过程数量 | |
| autostart = true ; 在 supervisord 启动的时候也主动启动 | |
| startsecs = 15 ; 启动 5 秒后没有异样退出，就当作曾经失常启动了 | |
| autorestart = true ; 程序异样退出后主动重启 | |
| startretries = 300 ; 启动失败主动重试次数，默认是 3 | |
| user = root ; 用哪个用户启动 | |
| redirect_stderr = true ; 把 stderr 重定向到 stdout，默认 false | |
| stdout_logfile_maxbytes = 50MB ; stdout 日志文件大小，默认 50MB | |
| stdout_logfile_backups = 20 ; stdout 日志文件备份数 | |
| ; stdout 日志文件, 须要手动创立目录（supervisord 会主动创立日志文件）stdout_logfile = /var/supervisor/log/test.log | |
| loglevel=info |
其中次要的就是 command 配置，写的须要变成守护过程的命令。
而后从新加载配置
| $ supervisorctl reread | |
| $ supervisorctl update |
查看子过程运行状况supervisorctl status
这样就某些脚本当前守护过程的形式跑起来了，并且监控了它。
好啦，这样就有了监控的机制，我的项目的运行就稳固多啦，先分享到这，当前有新的教训在写啦。
本文为夜雨闻铃原创文章, 转载无需和我分割, 但请注明文章出处。文章出处：夜雨闻铃的思否文章 https://segmentfault.com/a/11…
正文完
