少年恃险若平地，独倚长剑凌清秋。这篇文章主要讲述supervisor管理集群（多个tomcat）#yyds干货盘点#相关的知识，希望能为你提供帮助。
官网：http://www.supervisord.org/
1简介Supervisor ( http:/lsupervisord.orgL ) CIS架构的进程控制系统,是用python开发的一个client/server服务，是Linux/Unix系统下的一个进程管理工具，基于linux操作系统的一款服务器管理工具，不支持Windows系统。用以监控服务器的运行，发现问题能立即自动预警及自动重启等功能。
Supervisor类似于monit ,monit和supervisor的一个比较大的差异是supervisor管理的进程必须由supervisor来启动，monit可以管理已经在运行的程序;
supervisor还要求管理的程序是非daemon程序，supervisord会帮你把它转daemon程序，因此如果用supervisor来管理nginx的话，必须在nginx的配置文件里添加一行设置daemon offInginx以非
daemon方式启动。
因为Supervisor是Python开发的，安装前先检查一下系统否安装了Python2.4以上版本。下面以Cent0S7，Python2.7版本环境下，介绍Supervisor的安装与配置步聚:
2应用场景公司服务器众多，项目多以tomcat为主，而且服务器上tomcat节点比较多，此时通过脚本管理tomcat已经非常棘手，就需要一个统一的进程管理工具去统一管理项目。因此选用supervisor来管理I
??注意: supervisor只能管理前台进程。??
3.安装安装之前要确定你的虚拟机上是否有Python环境
3.1.安装supervisor
yum -y install supervisor
设置开启自启
systemctl enable supervisord
#常用supervisorctl命令
supervisorctl status
supervisorctl stop tomcat
supervisorctl start tomcat
supervisorctl restart tomcat
supervisorctl reread
supervisorctl update
3.2.通过supervisor管理tomcat,配置jdk环境
tar -zxvf jdk-8u60-linux-x64.tar.gz -C /usr/local/
chown -R root.root /usr/local/jdk1.8.0_60
cat> > /etc/profile< < \\EOF
###jdk环境###
export java_HOME=/usr/local/jdk1.8.0_60
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar
EOF
生效
source /etc/profile
java -version
3.3.安装tomcat
tar zxf apache-tomcat-8.5.29.tar.gz
mkdir -p /opt/app01
cp -a apache-tomcat-8.5.29/* /opt/app01/
#删除没有用的
rm -f NOTICE LICENSE RELEASE-NOTES RUNNING.txt
#启动tomcat
./bin/startup.sh
##查看一下有没有起来
ps -ef | grep java
#关闭tomcat
./bin/shutdown.sh
3.4.创建supervisor管理tomcat的子配置文件
[root@ c7-41 app01]# vim /etc/supervisord.d/app01.ini
[program:app01]
command=/opt/app01/bin/catalina.sh run
environment=JAVA_HOME="/usr/local/jdk1.8.0_60",JAVA_BIN="/usr/local/jdk1.8.0_60/bin"
directory=/opt/app01/bin/
numprocs=1
user = root
autostart = true
autorestart=true
startsecs = 5
3.5.启动supervisor，会把它下面的都给带起来
[root@ c7-41 app01]# systemctl status supervisord.service
● supervisord.service - Process Monitoring and Control Daemon
Loaded: loaded (/usr/lib/systemd/system/supervisord.service; enabled; vendor preset: disabled)
Active: inactive (dead)
[root@ c7-41 app01]# systemctl start supervisord.service
[root@ c7-41 app01]# ps -ef | grep java
root38393838 67 15:19 ?00:00:05 /usr/local/jdk1.8.0_60/bin/java -Djava.util.logging.config.file=/opt/app01/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dignore.endorsed.dirs= -classpath /opt/app01/bin/bootstrap.jar:/opt/app01/bin/tomcat-juli.jar -Dcatalina.base=/opt/app01 -Dcatalina.home=/opt/app01 -Djava.io.tmpdir=/opt/app01/temp org.apache.catalina.startup.Bootstrap start
root388733800 15:19 pts/000:00:00 grep --color=auto java
3.6.bash终端管理
[root@ c7-41 app01]# supervisorctl status#命令行模式
app01RUNNINGpid 3839, uptime 0:02:09
[root@ c7-41 app01]# supervisorctl#交互模式
app01RUNNINGpid 3839, uptime 0:13:57
supervisor> help
default commands (type help < topic> ):
=====================================
addexitopenreloadrestartstarttail
availfgpidremoveshutdownstatusupdate
clearmaintailquitrereadsignalstopversion
supervisor>
#ctrl+c退出
3.7.常用命令supervisorctl
[root@ c7-41 app01]# supervisorctl status app01
app01RUNNINGpid 3839, uptime 0:15:31
[root@ c7-41 app01]# supervisorctl start app01
app01: ERROR (already started)
supervisorctl stop app01
supervisorctl reload app01
3.8.看一下是否有问题
[root@ c7-41 app01]# curl -I 10.0.0.41:8080
HTTP/1.1 200
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Date: Mon, 20 Apr 2020 07:22:28 GMT
进入到主配置文件（ctrl+v可以删除多行，选中就好了）（按一下esc,然后ctrl+c，然后在i，添加完之后按一个esc）把注释去掉
3.9.启动一下
[root@ c7-41 ~]# systemctl restart supervisord
[root@ c7-41 ~]# supervisorctl start app01
app01: ERROR (already started)
[root@ c7-41 ~]# supervisorctl status app01
app01RUNNINGpid 4506, uptime 0:00:14
[root@ c7-41 ~]#
3.10.测试
?怎么弄多个tomcat?
[root@ c7-41 opt]# cp -a app01 app02
[root@ c7-41 conf]# vim server.xml
[root@ c7-41 conf]# pwd
/opt/app02/conf
?修改一下端口号?
?创建supervisor管理tomcat的子配置文件?
[root@ c7-41 app02]# cd /opt/app02/
[root@ c7-41 app02]# cd /etc/supervisord.d/
[root@ c7-41 supervisord.d]# ls
app01.ini
[root@ c7-41 supervisord.d]# cp app01.ini app02.ini
[root@ c7-41 supervisord.d]# vim app02
[root@ c7-41 supervisord.d]# vim app02.ini
[program:app02]
command=/opt/app02/bin/catalina.sh run
environment=JAVA_HOME="/usr/local/jdk1.8.0_60",JAVA_BIN="/usr/local/jdk1.8.0_60/bin"
directory=/opt/app02/bin/
numprocs=1
user = root
autostart = true
autorestart=true
startsecs = 5
?更新（添加）启动?
?页面刷新一下?
知识点传统的将程序放置后台启动：
1
（1）、& 放置后台启动；但是一般和nohup（不挂断运行命令）一起用；常用方法；nohup command &
（2）工具类：可以用supervisor等守护进程工具管理
2、
（1）nohup /opt/app01/bin/catalina.sh run & #后台启动
（2）nohup /opt/app01/bin/catalina.sh run #前台启动
【supervisor管理集群（多个tomcat）#yyds干货盘点#】3、cat /etc/supervisord.conf（这里面不用修改就是为了让你了解一下）
yum安装的supervisor的主配置文件详解
[root@ c7-41 app01]# cat /etc/supervisord.conf
; Sample supervisor config file.
[unix_http_server]#下面这个是supervisorctl和supervisord主程序通讯使用的
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]#supervisor自带UI界面有关; 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]#supervisord主程序的配置
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#在后台启动; (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; (dont 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]#supervisorctl命令行（客户端）
serverurl=unix:///var/run/supervisor/supervisor.sock ; use a unix:// URLfor 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=
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