linux下如何安裝supervisor，並且使用supervisor部署發佈windows下開發的helloworld全步驟

原創 fwhezfwhez 2018-08-22 12:08

業務場景: win10 64位下開發go程序，部署在linux環境下發布.
supervisor和go的相關介紹，在此不再贅述，觀看本文的讀者，最好有一定的go基礎,linux命令基礎。

目錄

一.helloworld創建與編譯
二.linux安裝supervisor
三.上傳和發佈
四.常見錯誤

一.HelloWorld創建與編譯

ide環境:
1. goland
2. git for windows
3. go 1.10

代碼

package main

import "github.com/gin-gonic/gin"

func main()  {
    router:= gin.Default()
    router.GET("/sayhello",sayHello)
    router.Run(":8899")
}
func sayHello(c *gin.Context){
    c.JSON(200,"Hello")
    return
}

測試,開啓服務，在本地瀏覽器上輸入和返回:
這裏寫圖片描述

交叉編譯
cd 到該項目路徑下,git bash here
這裏寫圖片描述
GOOS表示目標系統，GOARCH是編譯的go版本,-o是是指定交叉編譯之後的名字
windows下的準備工作基本做完了,沒有完全做完，還要有ssh-key需要配，這裏先假定已經配好了,有運維的讓運維幫你配，自己配請百度

二.linux安裝supervisor(已經裝配好的可以跳過該步驟)

在git中輸入

ssh  xxx@xxx.xxx.xxx.xx //服務端/虛擬機地址,比如ft@110.110.110.110
//請一步一步執行
wget --no-check-certificate https://bootstrap.pypa.io/ez_setup.py -O - | sudo python
easy_install supervisor

初始化配置文件:

mkdir /etc/supervisor
echo_supervisord_conf > /etc/supervisor/supervisord.conf
mkdir /etc/supervisor/config.d
vim /etc/supervisor/supervisord.conf
//在最後一行，添加(修改)成:
 [include]
 files = /etc/supervisor/config.d/*.ini

supervisord.conf裏分號後面的都是註釋內容，不用管。到這一步，原生的supervisor已經裝好了，但投入使用還是不方便的，設置一下開機自動啓動

cd /lib/systemd/system
vim supervisor.service
//內容修改(添加)成:
[Unit]
Description=supervisor
After=network.target

[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisor/supervisord.conf
ExecStop=/usr/bin/supervisorctl $OPTIONS shutdown
ExecReload=/usr/bin/supervisorctl $OPTIONS reload
KillMode=process
Restart=on-failure
RestartSec=42s

[Install]
WantedBy=multi-user.target

//回到bash命令上
systemctl enable supervisor.service
systemctl daemon-reload
chmod 766 supervisor.service

vim /etc/rc.d/init.d/supervisor
//修改(添加)內容爲:

#!/bin/bash
#
# supervisord   This scripts turns supervisord on
#
# Author:       Mike McGrath <[email protected]> (based off yumupdatesd)
#
# chkconfig:    - 95 04
#
# description:  supervisor is a process control utility.  It has a web based
#               xmlrpc interface as well as a few other nifty features.
# processname:  supervisord
# config: /etc/supervisor/supervisord.conf
# pidfile: /var/run/supervisord.pid
#

# source function library
. /etc/rc.d/init.d/functions

RETVAL=0

start() {
    echo -n $"Starting supervisord: "
    daemon "supervisord -c /etc/supervisor/supervisord.conf "
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/supervisord
}

stop() {
    echo -n $"Stopping supervisord: "
    killproc supervisord
    echo
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/supervisord
}

restart() {
    stop
    start
}

case "$1" in
  start)
    start
    ;;
  stop) 
    stop
    ;;
  restart|force-reload|reload)
    restart
    ;;
  condrestart)
    [ -f /var/lock/subsys/supervisord ] && restart
    ;;
  status)
    status supervisord
    RETVAL=$?
    ;;
  *)
    echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"
    exit 1
esac

exit $RETVAL


//回到bash上
chmod 755 /etc/rc.d/init.d/supervisor
chkconfig supervisor on

supervisor基本的準備完了，可以使用以下命令開啓看看效果,supervisorctl查看管理的客戶端，quit退出

supervisord -c /etc/supervisor/supervisord.conf

下面來進行helloworld的適配,以及對使用中遇到的常見問題的解決方案
1. 首先，linux對/tmp/下面的文件會定期清理，關機也會清理，如果比較重要的日誌，還是修改一下日誌路徑比較好
vim /etc/supervisor/supervisor.conf
權限不足的使用sudo vim /etc/supervisor/supervisor.conf ,或者-u 切換到root
內容修改爲:

; 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=/etc/supervisor/tmp/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=/etc/supervisor/tmp/supervisord.log ; main log file; default $CWD/supervisord.log
logfile_maxbytes=50MB        ; max main logfile bytes b4 rotation; default 50MB
logfile_backups=10           ; # of main logfile backups; 0 means none, default 10
loglevel=info                ; log level; default info; others: debug,warn,trace
pidfile=/etc/supervisor/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid
nodaemon=false               ; 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              ; 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:///etc/supervisor/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=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=/etc/supervisor/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=/etc/supervisor/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.
; add.
[include]
files = /etc/supervisor/config.d/*.ini

主要改動:
1. 末尾一定要添加,這是不同業務，比如helloworld1,hellworld2的配置路徑
這裏寫圖片描述
2. 各個原本路徑是/tmp的全部改到了/etc/supervisor/tmp
這裏寫圖片描述
這裏寫圖片描述
這裏寫圖片描述

如果找不到tmp目錄，記得mkdir /etc/supervisor/tmp先
來適配helloworld吧

cd /etc/supervisor/config.d
ll
vim helloworld.ini
//內容修改(添加)爲:
[program:helloworld]
directory = /home/tonnn/helloworld/
command = /home/tonnn/helloworld/helloworld
autorestart = true
redirect_stderr = true
stdout_logfile = /data/log/helloworld.log

簡約介紹一下，[program:helloworld]是文件頭，勿缺，會報錯,文件頭錯誤,directory是交叉編譯的文件所在路徑,command是supervisor管理時執行的命令文件本體,autorestart自動重啓，重定向錯誤,輸出日誌路徑
directory和stdout_logfile 請預先使用mkdir和vim創建好,不然會報錯誤哦

mkdir /home/tonnn/helloworld
vim /data/log/helloworld.log
//輸入一點註釋
[log for helloworld]

然後就是最重要的supervisor重啓了！
supervisord -c /etc/supervisor/supervisord.conf
supervisorctl -c /etc/supervisor/supervisord.conf

三.上傳和發佈

在交叉編譯的helloworld項目路徑下，git bash here

scp -P 22 helloworld xx@xxx.xxx.xxx.xxx:/home/tonnn/helloworld

新起一個git bash here

ssh xx@xxx.xxx.xxx.xxx
cd /home/tonnn/helloworld
ll
chmod 777 helloworld
supervisorctl start helloworld

結束！
從本機，訪問xxxx.xxxx.xxx.xxx:8899/sayhello
這裏寫圖片描述
部署成功！！！！！！！！
以後如果有hello2，hello3項目，只需要執行幾步:
GOOS=linux GOARCH=amd64 go build -o hellox
scp -P 22 hellox [email protected]:/home/tonnn/projects
ssh [email protected]
cd /home/tonnn/projects
supervisorctl restart hellox

PS
1. 對已有項目修改上傳時，報無法上傳，或xxx佔用，建議先上傳到/tmp/projects,然後執行,即先上傳，再複製覆蓋原本的，並修改執行權限
sudo cp -f /tmp/projects/hello /home/tonnn/projects/hello
sudo chmod 777 /home/tonnn/projects/hello

四.常見錯誤
  1. 執行supervisorctl update 和supervisorctl reload時， 出現
Connection refused: file: /usr/lib64/python2.7/socket.py line: 224

這是因爲supervisor還沒啓動,使用下行啓動

supervisord -c /etc/supervisor/supervisord.conf


2. 執行supervisord -c /etc/supervisor/supervisord.conf時，出現

Error: File contains no section headers.
file: /etc/supervisor/config.d/helloworld.ini, line: 1
'directory = /home/tonnn/helloworld/\n'
For help, use /usr/bin/supervisord -h

這是因爲，helloworld.ini的頭沒帶上
這裏寫圖片描述

  1. 出現文件路徑找不到，比如執行supervisord -c /etc/supervisor/supervisord.conf,出現
    Error: The directory named as part of the path /data/log/helloworld.log does not exist in section ‘program:helloworld’ (file: ‘/etc/supervisor/config.d/helloworld.ini’)
    For help, use /usr/bin/supervisord -h
    這是因爲helloworld.ini或者helloworld.log找不到該文件，我們在conf.d裏的helloworld.ini內容特地強調了log路徑和它本身要建好。

4.執行supervisorctl start hello 出現 no process error
這是因爲，supervisord還沒有啓動，依次執行
supervisord -c /etc/supervisor/supervisord.conf
supervisorctl -c /etc/supervisor/supervisord.conf

5.出現各種未知錯誤，請保持修改之後執行
supervisorctl reload和supervisorctl update的良好習慣。

下一節講如何將複雜的部署一鍵化
https://blog.csdn.net/fwhezfwhez/article/details/80857017

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