一、背景
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二、安装
1.安装python-setuptools.
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yum install python-setuptools <span class="hljs-preprocessor">#supervisor安装完成后会生成三个执行程序:supervisortd、supervisorctl、echo_supervisord_conf,分别是supervisor的守护进程服务(用于接收进程管理命令)、客户端(用于和守护进程通信,发送管理进程的指令)、生成初始配置文件程序。</span> |
2.安装supervisor.
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easy_install supervisor |
三、配置
1.使用echo_supervisord_conf,我们将其重定向到文件中,然后修改其配置项。 运行supervisord服务的时候,需要指定supervisor配置文件,此处我们指定/etc/supervisor.
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<span class="hljs-comment">#新建目录</span> mkdir /etc/supervisor echo_supervisord_conf > <span class="hljs-regexp">/etc/supervisor</span><span class="hljs-regexp">/supervisord.conf #配置输出到/etc</span><span class="hljs-regexp">/supervisor/supervisord</span>.conf中 |
初始化配置文件如图所示。
2.配置管理进程。
进程管理配置参数,不建议全都写在supervisord.conf文件中,可以将每个进程写一个配置文件放在include指定的目录下包含进supervisord.conf文件中。类似nginx的配置文件。
(1)创建/etc/supervisor/config.d目录,用于存放进程管理的配置文件。(此处目录可自定义,与配置文件中对应即可)
(2)修改/etc/supervisor/supervisord.conf中的include参数,将/etc/supervisor/conf.d目录添加到include中。
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[<span class="hljs-keyword">include</span>] files = <span class="hljs-regexp">/etc/supervisor</span><span class="hljs-regexp">/config.d/</span>*.ini |
3.服务配置模板。
/etc/supervisor/supervisor.conf
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<span class="hljs-title">[unix_http_server]</span> <span class="hljs-setting">file=<span class="hljs-value">/tmp/supervisor.sock ;UNIX socket 文件,supervisorctl 会使用</span></span> <span class="hljs-comment">;chmod=0700 ;socket文件的mode,默认是0700</span> <span class="hljs-comment">;chown=nobody:nogroup ;socket文件的owner,格式:uid:gid</span> <span class="hljs-title">[inet_http_server]</span> <span class="hljs-comment">;HTTP服务器,提供web管理界面</span> <span class="hljs-setting">port=<span class="hljs-value"><span class="hljs-number">127.0</span>.<span class="hljs-number">0.1</span>:<span class="hljs-number">9001</span> ;Web管理后台运行的IP和端口,如果开放到公网,需要注意安全性</span></span> <span class="hljs-comment">;username=user ;登录管理后台的用户名</span> <span class="hljs-comment">;password=123 ;登录管理后台的密码</span> <span class="hljs-title">[supervisord]</span> <span class="hljs-setting">logfile=<span class="hljs-value">/tmp/supervisord.log ;日志文件,默认是 $CWD/supervisord.log</span></span> <span class="hljs-setting">logfile_maxbytes=<span class="hljs-value"><span class="hljs-number">50</span>MB ;日志文件大小,超出会rotate,默认 <span class="hljs-number">50</span>MB,如果设成<span class="hljs-number">0</span>,表示不限制大小</span></span> <span class="hljs-setting">logfile_backups=<span class="hljs-value"><span class="hljs-number">10</span> ;日志文件保留备份数量默认<span class="hljs-number">10</span>,设为<span class="hljs-number">0</span>表示不备份</span></span> <span class="hljs-setting">loglevel=<span class="hljs-value">info ;日志级别,默认info,其它: debug,warn,trace</span></span> <span class="hljs-setting">pidfile=<span class="hljs-value">/tmp/supervisord.pid ;pid 文件</span></span> <span class="hljs-setting">nodaemon=<span class="hljs-value"><span class="hljs-keyword">false</span> ;是否在前台启动,默认是<span class="hljs-keyword">false</span>,即以 daemon 的方式启动</span></span> <span class="hljs-setting">minfds=<span class="hljs-value"><span class="hljs-number">1024</span> ;可以打开的文件描述符的最小值,默认 <span class="hljs-number">1024</span></span></span> <span class="hljs-setting">minprocs=<span class="hljs-value"><span class="hljs-number">200</span> ;可以打开的进程数的最小值,默认 <span class="hljs-number">200</span></span></span> <span class="hljs-title">[supervisorctl]</span> <span class="hljs-setting">serverurl=<span class="hljs-value">unix:///tmp/supervisor.sock ;通过UNIX socket连接supervisord,路径与unix_http_server部分的file一致</span></span> <span class="hljs-comment">;serverurl=http://127.0.0.1:9001 ; 通过HTTP的方式连接supervisord</span> <span class="hljs-comment">;包含其它配置文件</span> <span class="hljs-title">[include]</span> <span class="hljs-setting">files = <span class="hljs-value">/etc/supervisor/config.d/*.ini ;可以指定一个或多个以.ini结束的配置文件</span></span> |
/etc/supervisor/conf.d/tomcat.ini
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<span class="hljs-comment">;[program:tomcat]是被管理的进程配置参数,tomcat是进程的名称</span> <span class="hljs-title">[program:tomcat]</span> <span class="hljs-setting">command=<span class="hljs-value">/opt/tomcat/bin/startup.sh ; 程序启动命令</span></span> <span class="hljs-setting">autostart=<span class="hljs-value"><span class="hljs-keyword">true</span> ; 在supervisord启动的时候也自动启动</span></span> <span class="hljs-setting">startsecs=<span class="hljs-value"><span class="hljs-number">10</span> ; 启动<span class="hljs-number">10</span>秒后没有异常退出,就表示进程正常启动了,默认为<span class="hljs-number">1</span>秒</span></span> <span class="hljs-setting">autorestart=<span class="hljs-value"><span class="hljs-keyword">true</span> ; 程序退出后自动重启,可选值:[unexpected,<span class="hljs-keyword">true</span>,<span class="hljs-keyword">false</span>],默认为unexpected,表示进程意外杀死后才重启</span></span> <span class="hljs-setting">startretries=<span class="hljs-value"><span class="hljs-number">3</span> ; 启动失败自动重试次数,默认是<span class="hljs-number">3</span></span></span> <span class="hljs-setting">user=<span class="hljs-value">tomcat ; 用哪个用户启动进程,默认是root</span></span> <span class="hljs-setting">priority=<span class="hljs-value"><span class="hljs-number">999</span> ; 进程启动优先级,默认<span class="hljs-number">999</span>,值小的优先启动</span></span> <span class="hljs-setting">redirect_stderr=<span class="hljs-value"><span class="hljs-keyword">true</span> ; 把stderr重定向到stdout,默认<span class="hljs-keyword">false</span></span></span> <span class="hljs-setting">stdout_logfile_maxbytes=<span class="hljs-value"><span class="hljs-number">20</span>MB ; stdout 日志文件大小,默认<span class="hljs-number">50</span>MB</span></span> <span class="hljs-setting">stdout_logfile_backups = <span class="hljs-value"><span class="hljs-number">20</span> ; stdout 日志文件备份数,默认是<span class="hljs-number">10</span></span></span> <span class="hljs-comment">; 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)</span> <span class="hljs-setting">stdout_logfile=<span class="hljs-value">/opt/tomcat/logs/catalina.out</span></span> <span class="hljs-setting">stopasgroup=<span class="hljs-value"><span class="hljs-keyword">false</span> ;默认为<span class="hljs-keyword">false</span>,进程被杀死时,是否向这个进程组发送stop信号,包括子进程</span></span> <span class="hljs-setting">killasgroup=<span class="hljs-value"><span class="hljs-keyword">false</span> ;默认为<span class="hljs-keyword">false</span>,向进程组发送kill信号,包括子进程</span></span> |
4.服务启动与关闭。
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<span class="hljs-preprocessor">#启动supervisor,-c制定让其读取的配置文件</span> supervisord -c /etc/supervisor/supervisord.conf <span class="hljs-preprocessor">#关闭supervisor</span> supervisorctl shutdown <span class="hljs-preprocessor">#重新加载supervisor配置文件,并重启superivisor</span> supervisorctl reload <span class="hljs-preprocessor">#添加或删除配置文件 </span> <span class="hljs-preprocessor">#更新</span> supervisorctl update <span class="hljs-preprocessor">#管理supervisor的服务</span> <span class="hljs-preprocessor">###启动服务</span> supervisorctl start all supervisorctl start service_name <span class="hljs-preprocessor">###关闭服务</span> supervisorctl stop all supervisorctl stop service_name <span class="hljs-preprocessor">###查看状态</span> supervisorctl status [service_name] <span class="hljs-preprocessor">###重新启动所有服务或者是某个服务</span> supervisorctl restart all supervisorctl restart service_name |
查看tomcat进程状态。
5.web端访问。浏览器中输入http://192.168.10.135:9001,访问地址与supervisor.conf对应。
注意,如果无法正常访问,用windows端cmd ping192.168.10.135(你的supervisor服务端ip)看是否ping通,若不通考虑网络问题,若通,试清空centos7防火墙规则或添加端口规则。
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