supervisor進程守護

 

Supervisor是一個客戶端/服務器系統。我是用他是為了讓Asp.Net Core程序可以在ubuntu服務器上一直運行下去；

我們開發好程序之后；在ubuntu 使用dotnet命令可以運行寫好的程序；但是關閉xshell工具，這個進程也就關閉了；這時就用到了Supervisor，這篇博客主要是鞏固自己學的東西，以及所遇到的一些錯誤以及解決方案；

 

Supervisor安裝

#安裝supervisor

sudo apt-get install supervisor

#常用命令

#重啟
service supervisor restart

#啟動
service supervisor start 

#停止  
service supervisor stop

#查看進程
netstat -ntpl

#殺死進程
kill 進程ID

創建文件夾
mkdir 文件名

刪除具體文件
rm -f 文件名

刪除該文件夾下所有文件
rm -rf *

創建文件
touch 文件名.文件類型

查看當前目錄
ls

編輯文件
vim 文件名

編輯文件進入之后的一些命令(這些命令需要按Esc再執行)
取消前一個操作
u

保存並退出
wq

不保存並退出
q!

 

配置Supervisor

安裝完成之后會有一些目錄：

conf.d 文件夾下可以存放我們寫的配置文件，去運行你需要執行的進程

具體配置為

[program:TestApiInfo]
command=dotnet Hubert.Api.Demo.dll    #需要運行的dll
directory=/home/hubert/dotnetcore/testapi   #你的程序路徑（注意權限問題）
autostart=true         #是否自動啟動
autorestart=true      #是否自動重啟
stderr_logfile=/var/log/TestApiInfo.err.log     #錯誤日志
stdout_logfile=/var/log/TestApiInfo.out.log    #輸出日志
environment=Hosting__Environment=Production
user=root               #進程執行的用戶身份
stopsignal=INT
redirect_stderr=true

 

 

supervisord.conf 是supervisor配置文件 

[unix_http_server]
file=/var/run/supervisor.sock   ; (the path to the socket file)
chmod=0700                       ; sockef file mode (default 0700)

[supervisord]
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)

; 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/run/supervisor.sock ; use a unix:// URL  for a unix socket

; 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

 

遇到的問題

supervisor: couldn't chdir to /public/dotnetcore/demoapiproject/: ENOENT
supervisor: child process was not spawned

這是因為原先存放程序的路徑問題，supervisor無法讀取到該程序，所以切換到home路徑，未出現這個問題；（自己這么解決的...）

 

Error: Another program is already listening on a port that one of our HTTP servers is configured to use. Shut this program down first before starting supervisord.
For help, use /usr/bin/supervisord -h

運行這個命令解決了

sudo unlink /run/supervisor.sock

 

最后測試你的程序是否被supervisor守護

1、查看所有子進程的狀態

root@www:/etc/supervisor/conf.d# supervisorctl status
TestApiInfo                      RUNNING   pid 12694, uptime 0:45:18
apidemo                          FATAL     Exited too quickly (process log may have details)
root@www:/etc/supervisor/conf.d# 

 

2、查看你需要監控守護的進程，並且殺死該進程再查看該進程是否還在

root@www:~# netstat -ntpl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      23636/nginx: master 
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      23636/nginx: master 
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN      363/systemd-resolve 
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      775/sshd            
tcp        0      0 127.0.0.1:6010          0.0.0.0:*               LISTEN      7128/sshd: root@pts 
tcp6       0      0 :::55555                :::*                    LISTEN      745/v2ray           
tcp6       0      0 :::53128                :::*                    LISTEN      745/v2ray           
tcp6       0      0 :::5006                 :::*                    LISTEN      12694/dotnet        
tcp6       0      0 :::80                   :::*                    LISTEN      23636/nginx: master 
tcp6       0      0 :::8080                 :::*                    LISTEN      17184/docker-proxy  
tcp6       0      0 :::22                   :::*                    LISTEN      775/sshd            
tcp6       0      0 ::1:6010                :::*                    LISTEN      7128/sshd: root@pts 
root@www:~# kill 12694
root@www:~# netstat -ntpl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      23636/nginx: master 
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      23636/nginx: master 
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN      363/systemd-resolve 
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      775/sshd            
tcp        0      0 127.0.0.1:6010          0.0.0.0:*               LISTEN      7128/sshd: root@pts 
tcp6       0      0 :::55555                :::*                    LISTEN      745/v2ray           
tcp6       0      0 :::53128                :::*                    LISTEN      745/v2ray           
tcp6       0      0 :::5006                 :::*                    LISTEN      15984/dotnet        
tcp6       0      0 :::80                   :::*                    LISTEN      23636/nginx: master 
tcp6       0      0 :::8080                 :::*                    LISTEN      17184/docker-proxy  
tcp6       0      0 :::22                   :::*                    LISTEN      775/sshd            
tcp6       0      0 ::1:6010                :::*                    LISTEN      7128/sshd: root@pts 
root@www:~#