上一篇我们用jenkins做了一个简单的自动化发布，在shell中采用的是 BUILD_ID=dontKillMe nohup dotnet xxx.dll & 这种简单的后台承载，如果你的业务
量相对比较小，可以用这个方法玩一玩，但存在二个问题：1. 无法对进程进行批量或者可视化管理。 2. 单机模式下的多副本部署比较麻烦，比如你在一台机
器上开启多个同样的程序来提高队列的处理能力，解决这两个问题你可以使用netcore官方推荐的supervisor 进程管理工具。
一： supervisor
具体这玩意是干嘛的，我就不说了，大家自己看官网：http://www.supervisord.org/ 接下来快速部署一下。
1. pip
pip是python的一个包管理器，类似于nuget，如果你的centos上没有安装，那么请执行下面命令。
yum -y install epel-release
yum -y install python-pip
2. supervisor
因为supervisor是python写的，所以直接通过pip进行安装即可。
[root@k8s-node1 ~]# pip install supervisor
Collecting supervisor
Downloading https://files.pythonhosted.org/packages/ba/65/92575a8757ed576beaee59251f64a3287bde82bdc03964b89df9e1d29e1b/supervisor-3.3.5.tar.gz (421kB)
% |████████████████████████████████| 430kB 47kB/s
Collecting meld3>=0.6. (from supervisor)
Downloading https://files.pythonhosted.org/packages/b6/ae/e6d731e4b9661642c1b20591d8054855bb5b8281cbfa18f561c2edd783f7/meld3-1.0.2-py2.py3-none-any.whl
Installing collected packages: meld3, supervisor
Running setup.py install for supervisor ... done
Successfully installed meld3-1.0. supervisor-3.3.
You are using pip version 10.0., however version 18.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
[root@k8s-node1 ~]# pip install --upgrade pip
Collecting pip
Downloading https://files.pythonhosted.org/packages/c2/d7/90f34cb0d83a6c5631cf71dfe64cc1054598c843a92b400e55675cc2ac37/pip-18.1-py2.py3-none-any.whl (1.3MB)
% |████████████████████████████████| .3MB 49kB/s
Installing collected packages: pip
Found existing installation: pip 10.0.
Uninstalling pip-10.0.:
Successfully uninstalled pip-10.0.
Successfully installed pip-18.1
3. supervisord
这个就是supervisor的server端，启动之前生成一个默认的配置文件，放在 /data/supervisor/目录下。
[root@k8s-node1 supervisor]# pwd
/data/supervisor
[root@k8s-node1 supervisor]# echo_supervisord_conf > ./supervisord.conf
[root@k8s-node1 supervisor]# ls
supervisord.conf
关于配置文件的详细配置，你可以参考官方的：http://www.supervisord.org/configuration.html ，
; 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=/tmp/supervisor.sock ; the path to the socket file
;chmod= ; socket file mode (default )
;chown=nobody:nogroup ; socket file uid:gid owner
;username=user ; default is no username (open server)
;password= ; default is no password (open server) ;[inet_http_server] ; inet (TCP) server disabled by default
;port=127.0.0.1: ; ip_address:port specifier, *:port for all iface
;username=user ; default is no username (open server)
;password= ; default is no password (open server) [supervisord]
logfile=/tmp/supervisord.log ; main log file; default $CWD/supervisord.log
logfile_maxbytes=50MB ; max main logfile bytes b4 rotation; default 50MB
logfile_backups= ; # of main logfile backups; means none, default
loglevel=info ; log level; default info; others: debug,warn,trace
pidfile=/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid
nodaemon=false ; start in foreground if true; default false
minfds= ; min. avail startup file descriptors; default
minprocs= ; min. avail process descriptors;default
;umask= ; process file creation umask; default
;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:///tmp/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= ; 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= ; number of processes copies to start (def )
;directory=/tmp ; directory to cwd to before exec (def no cwd)
;umask= ; umask for process (default None)
;priority= ; the relative start priority (default )
;autostart=true ; start at supervisord start (default: true)
;startsecs= ; # of secs prog must stay up to be running (def. )
;startretries= ; max # of serial start failures when starting (default )
;autorestart=unexpected ; when to restart if exited after running (def: unexpected)
;exitcodes=, ; 'expected' exit codes used with autorestart (default ,)
;stopsignal=QUIT ; signal used to kill process (default TERM)
;stopwaitsecs= ; max num secs to wait b4 SIGKILL (default )
;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= ; # of stdout logfile backups ( means none, default )
;stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default )
;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 ( means none, default )
;stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default )
;stderr_events_enabled=false ; emit events on stderr writes (default false)
;environment=A="",B="" ; 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= ; number of processes copies to start (def )
;events=EVENT ; event notif. types to subscribe to (req'd)
;buffer_size= ; event buffer queue size (default )
;directory=/tmp ; directory to cwd to before exec (def no cwd)
;umask= ; umask for process (default None)
;priority=- ; the relative start priority (default -)
;autostart=true ; start at supervisord start (default: true)
;startsecs= ; # of secs prog must stay up to be running (def. )
;startretries= ; max # of serial start failures when starting (default )
;autorestart=unexpected ; autorestart if exited after running (def: unexpected)
;exitcodes=, ; 'expected' exit codes used with autorestart (default ,)
;stopsignal=QUIT ; signal used to kill process (default TERM)
;stopwaitsecs= ; max num secs to wait b4 SIGKILL (default )
;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= ; # of stdout logfile backups ( means none, default )
;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 ( means none, default )
;stderr_events_enabled=false ; emit events on stderr writes (default false)
;environment=A="",B="" ; 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= ; the relative start priority (default ) ; 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 = relative/directory/*.ini
上面的文件主要改两个地方：
《1》 开启supervisor的可视化界面
;[inet_http_server] ; inet (TCP) server disabled by default
;port=127.0.0.1: ; ip_address:port specifier, *:port for all iface
;username=user ; default is no username (open server)
;password= ; default is no password (open server)
改成：
[inet_http_server] ; inet (TCP) server disabled by default
port=0.0.0.0: ; ip_address:port specifier, *:port for all iface
;username=user ; default is no username (open server)
;password= ; default is no password (open server)
《2》 下面这个语法表示可以加载指定目录的所有ini文件，这个口子就方便我们给每个应用程序配一个xx.ini文件，这样当你update的时候，supervisor会
自动 将conf目录下*.ini文件和supervisor.conf进行合并。
;[include]
;files = relative/directory/*.ini
改成
[include]
files = ./conf/*.ini
最后启动一下，更多的你可以通过help命令查看。
[root@k8s-node1 supervisor]# supervisord -c ./supervisord.conf
4. supervisorctl
supervisotctl 是一个客户端工具，通过9001端口与server进行交互，可处理如下18个命令。
[root@k8s-master supervisord]# supervisorctl help default commands (type help <topic>):
=====================================
add exit open reload restart start tail
avail fg pid remove shutdown status update
clear maintail quit reread signal stop version
接下来可以在conf目录下生成一个 consoleapp3.ini 文件，程序名为:consoleapp3。
[root@k8s-master conf]# tail consoleapp3.ini
[program:consoleapp3]
command=/usr/bin/dotnet /data/supervisord/ConsoleApp3/ConsoleApp3.dll
autostart=true
autorestart=true
stdout_logfile=/data/supervisord/ConsoleApp3/.log
执行以下update命令让supervisor重新加载配置文件。
[root@k8s-master supervisord]# supervisorctl update
回到文章开头的问题，如果生成多个副本，你可以采用group模式，比如下面这样的 mytest.ini 文件放置到conf目录下。
[group:mytest]
programs=mytest1,mytest2,mytest3 [program:mytest1]
command=/usr/bin/dotnet /data/supervisord/mytest/ConsoleApp1.dll
autostart=true
autorestart=true
stdout_logfile=/data/supervisord/mytest/.log [program:mytest2]
command=/usr/bin/dotnet /data/supervisord/mytest/ConsoleApp1.dll
autostart=true
autorestart=true
stdout_logfile=/data/supervisord/mytest/.log [program:mytest3]
command=/usr/bin/dotnet /data/supervisord/mytest/ConsoleApp1.dll
autostart=true
autorestart=true
stdout_logfile=/data/supervisord/mytest/.log
然后通过 supervisorctl update 让supervisor重新加载配置文件，然后可观察可视化界面。
[root@k8s-master conf]# supervisorctl update
mytest: added process group
有了这个基础之后，和jenkins集成就很简单了，因为9001端口被占用，就重新指定了一个19001端口，把应用程序的*.ini文件放在解决方案里，这样自动化的
时候就可以找到*.ini文件，然后copy到supervisor的conf目录下，因为是强制copy，所以用管道模式 yes | .....
《1》 普通模式
supervisorctl -s http://localhost:19001 stop memsql-test \
&& cd ./MemSql.NetCore/MemSql.Test \
&& yes | cp ./doc/memsql-test.ini /data/supervisor/conf/ \
&& dotnet publish -o /data/output/MemSql.Test -c Release \
&& supervisorctl -s http://localhost:19001 update \
&& supervisorctl -s http://localhost:19001 start memsql-test
《2》 组模式
supervisorctl -s http://localhost:19001 stop memsql-automationdeploy:* \
&& cd ./MemSql.NetCore/MemSql.AutomationDeploy \
&& yes | cp ./doc/memsql-automationdeploy.ini /data/supervisor/conf/ \
&& dotnet publish -o /data/output/MemSql.AutomationDeploy -c Release \
&& supervisorctl -s http://localhost:19001 update \
&& supervisorctl -s http://localhost:19001 start memsql-automationdeploy:*
好了，本篇就说到这里，如果有人问多机器怎么玩，下篇再说ansible~