1、Supervisor 安装
1）easy_install 安装 supervisor
wget https://pypi.io/packages/source/s/setuptools/setuptools-33.1.1.zip unzip setuptools-33.1.1.zip cd setuptools-33.1.1 python setup.py install easy_install supervisor
2）pip 安装 supervisor
pip install supervisor
3）CentOS或Debian/Ubuntu 安装
CentOS：
yum install -y epel-releaseyum -y install supervisor
Debian/Ubuntu：
apt-get install supervisor
2、配置Supervisor
1）初始化配置文件
使用echo_supervisord_conf命令生成Supervisor的配置文件。
mkdir /etc/supervisord.d echo_supervisord_conf >/etc/supervisord.conf
2）修改配置文件
配置文件内容比较多，需要修改内容如下，
#修改socket文件的mode，默认是0700 sed -i 's/;chmod=0700/chmod=0766/g'/etc/supervisord.conf #在配置文件最后添加以下两行内容来包含/etc/supervisord目录 sed -i '$a [include] \ files =/etc/supervisord.d/*.conf' /etc/supervisord.conf
内容如下：
; Sample supervisor config file.;; For more information on the config file, please see:; http://supervisord.org/configuration.html;; Notes:; - Shell expansion ("~" or "$HOME") is not supported. Environment; variables can be expanded using this syntax: "%(ENV_HOME)s".; - Quotes around values are not supported, except in the case of; the environment= options as shown below.; - Comments must have a leading space: "a=b ;comment" not "a=b;comment".; - Command will be truncated if it looks like a config file comment, e.g.; "command=bash -c 'foo ; bar'" will truncate to "command=bash -c 'foo ".[unix_http_server]file=/var/run/supervisor.sock ; the path to the socket file;chmod=0700 ; socket 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/supervisord.log ; main log file; default $CWD/supervisord.loglogfile_maxbytes=50MB ; max main logfile bytes b4 rotation; default 50MBlogfile_backups=10 ; # of main logfile backups; 0 means none, default 10loglevel=info ; log level; default info; others: debug,warn,tracepidfile=/var/run/supervisord.pid ; supervisord pidfile; default supervisord.pidnodaemon=false ; start in foreground if true; default falseminfds=1024 ; min. avail startup file descriptors; default 1024minprocs=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 rpcinterface:supervisor 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:x] sections.[rpcinterface:supervisor]supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface; The supervisorctl section configures how supervisorctl will connect to; supervisord. configure it match the settings in either the unix_http_server; or inet_http_server section.[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 in [*_http_server] if set;password=123 ; should be same as in [*_http_server] if set;prompt=mysupervisor ; cmd line prompt (default "supervisor");history_file=~/.sc_history ; use readline history if available; The sample program section below 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);startsecs=1 ; # of secs prog must stay up to be running (def. 1);startretries=3 ; max # of serial start failures when starting (default 3);autorestart=unexpected ; when to restart if exited after running (def: unexpected);exitcodes=0,2 ; 'expected' exit codes used with autorestart (default 0,2);stopsignal=QUIT ; signal used to kill process (default TERM);stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10);stopasgroup=false ; send stop signal to the UNIX process group (default false);killasgroup=false ; SIGKILL the UNIX process group (def false);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 (0 means none, 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 (0 means none, 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 sample eventlistener section below shows all possible eventlistener; subsection values. Create one or more 'real' eventlistener: sections to be; able to handle event notifications sent by supervisord.;[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);startsecs=1 ; # of secs prog must stay up to be running (def. 1);startretries=3 ; max # of serial start failures when starting (default 3);autorestart=unexpected ; autorestart if exited after running (def: unexpected);exitcodes=0,2 ; 'expected' exit codes used with autorestart (default 0,2);stopsignal=QUIT ; signal used to kill process (default TERM);stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10);stopasgroup=false ; send stop signal to the UNIX process group (default false);killasgroup=false ; SIGKILL the UNIX process group (def false);user=chrism ; setuid to this UNIX account to run the program;redirect_stderr=false ; redirect_stderr=true is not allowed for eventlisteners;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 (0 means none, 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=10 ; # of stderr logfile backups (0 means none, 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 sample group section below 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/supervisor/conf.d/*.conf
3）添加被管理应用nginx和tomcat配置文件
vim /etc/supervisord.d/tomcat.conf
[program:tomcat-app]#程序唯一名称 directory=/usr/local/tomcat #程序路径 command=/usr/local/tomcat/bin/catalina.sh run #运行程序的命令 autostart=true#是否在supervisord启动后tomcat也启动 startsecs=10#启动10秒后没有异常退出，就表示进程正常启动了，默认为1秒 autorestart=true#程序退出后自动重启,可选值：[unexpected,true,false]，默认为unexpected，表示进程意外杀死后才重启；意思为如果不是supervisord来关闭的该进程则认为不正当关闭，supervisord会再次把该进程给启动起来，只能使用该supervisorctl来进行关闭、启动、重启操作 startretries=3#启动失败自动重试次数，默认是3 user=root #用哪个用户启动进程，默认是root priority=999#进程启动优先级，默认999，假如Supervisord需要管理多个进程，那么值小的优先启动 stopsignal=INT redirect_stderr=true#把stderr重定向到stdout标准输出，默认false stdout_logfile_maxbytes=200MB#stdout标准输出日志文件大小，日志文件大小到200M后则进行切割，切割后的日志文件会标示为catalina.out1,catalina.out2,catalina.out3...，默认50MB stdout_logfile_backups =100#stdout标准输出日志文件备份数，保存100个200MB的日志文件，超过100个后老的将被删除，默认为10保存10个 stdout_logfile=/usr/local/tomcat/logs/catalina.out#标准日志输出位置，如果输出位置不存在则会启动失败 stopasgroup=false#默认为false,进程被杀死时，是否向这个进程组发送stop信号，包括子进程 killasgroup=false#默认为false，向进程组发送kill信号，包括子进程 [program:nginx-app]user=rootcommand = /bin/nginx -g 'daemon off;'stderr_logfile=/tmp/nginxapp.err.logstdout_logfile=/tmp/nginxapp.out.log
注意：通过 fork/exec 的方式把这些被管理的进程当作supervisor的子进程来启动，如此只要在supervisor的配置文件中，把要管理的进程的可执行文件的路径写进去即可。也实现当子进程挂掉的时候，父进程可以准确获取子进程挂掉的信息的，可以选择是否自己启动和报警。supervisor还提供了一个功能，可以为supervisord或者每个子进程，设置一个非root的user，这个user就可以管理它对应的进程。
3、启动supervisord
使用supervisord管理启动后，当使用/usr/local/tomcat/shutdown.sh或者kill $PID时，supervisord都当是意外关闭，会自动再次把进程启动，除非是使用supervisord命令关闭。
supervisord -c /etc/supervisord.conf
注意：启动supervisord后，配置文件中设置了 autostart=true 参数，配置的应用也会随之启动。
1）单个程序管理命令
supervisorctl status tomcat-app supervisorctl stop tomcat-app supervisorctl start tomcat-app supervisorctl restart tomcat-app supervisorctl reoload tomcat-app
注意：tomcat-app是配置文件中名字。
2）所有程序管理命令
supervisorctl stop all supervisorctl start all supervisorctl restart all supervisorctl reoload all
4、配置开机启动
1）添加服务文件
vim /usr/lib/systemd/system/supervisord.service
添加文件内容如下：
[Unit] Description=ProcessMonitoringandControlDaemon After=rc-local.service nss-user-lookup.target [Service] Type=forking ExecStart=/usr/bin/supervisord -c /etc/supervisord.conf [Install] WantedBy=multi-user.target
2）设置开机启动
systemctl enable supervisord systemctl is-enabled supervisord