Centosはsupervisorをインストールし、Redisプロセスを守る

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php キャッシュ redis

前言
ビジネスの問題に基づいて、プロジェクトにはキャッシュとキューのためにredisが追加されました.しかし、現在は単一のサーバに導入されているだけで、アリクラウドのような他のサービスは購入されておらず、主従も構築されていません.これにより問題が発生し,redisプロセスが予期せぬカード死にすると業務が行えなくなることは許されないため,プロセスが守るもの,自動傍受できるもの,supervisorが考えられる. supervisorは、ユーザーがunixオペレーティングシステム上の多くのプロセスを監視および制御できるクライアント/サーバシステムです.1つ以上のプロセスをリスニング、起動、停止、再起動するのに便利です.Supervisorで管理するプロセスは、プロセスが意外に殺された場合、supervisortがプロセスが死んだ後、自動的にそれを引き上げ、プロセスの自動回復を容易にする機能であり、shellスクリプトを自分で書く必要はありません.supervisort公式サイト
1.supervisorのインストール

    sudo su - #   root  
    yum install epel-release
    yum install -y supervisor
    
    systemctl enable supervisord #      
    systemctl start supervisord #   supervisord  
    systemctl status supervisord #   supervisord    
    ps -ef|grep supervisord #       supervisord

2.supervisorの構成

  supervisor    `mkdir /etc/supervisord.d/`

  supervisor    :`echo_supervisord_conf > /etc/supervisord.conf`

  supervisord.conf  ：`vi /etc/supervisord.conf`

ファイルの内容は次のとおりです.

; 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".
;  - Comments must have a leading space: "a=b ;comment" not "a=b;comment".

[unix_http_server]
file=/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]
user = root                  ;        ，      
logfile=/tmp/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=/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 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:///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 http_username if set
;password=123                ; should be same as http_password if set
;prompt=mysupervisor         ; cmd line prompt (default "supervisor")
;history_file=~/.sc_history  ; use readline history if available

; The below sample program section 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)
;autorestart=unexpected        ; whether/when to restart (default: unexpected)
;startsecs=1                   ; number of secs prog must stay running (def. 1)
;startretries=3                ; max # of serial start failures (default 3)
;exitcodes=0,2                 ; 'expected' exit codes for process (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 (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 (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 below sample eventlistener section shows all possible
; eventlistener subsection values, create one or more 'real'
; eventlistener: sections to be able to handle event notifications
; sent by supervisor.

;[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)
;autorestart=unexpected        ; whether/when to restart (default: unexpected)
;startsecs=1                   ; number of secs prog must stay running (def. 1)
;startretries=3                ; max # of serial start failures (default 3)
;exitcodes=0,2                 ; 'expected' exit codes for process (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 (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        ; # of stderr logfile backups (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 below sample group section 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/supervisord.d/conf.d/*.ini

保存終了、supervisor supervisord -c /etc/supervisord.confを起動
supervisorが正常に起動したかどうかを確認します:ps -ef|grep supervisordこれでsupervisorのインストールが完了しました
3.supervisor管理

# systemctl stop supervisord
# systemctl start supervisord
# systemctl status supervisord
# systemctl reload supervisord
# systemctl restart supervisord

4.supervisor構成デーモンRedis
supervisorの作成に必要なディレクトリ

mkdir /etc/supervisord.d/conf.d/
mkdir /etc/supervisord.d/logs/

Redisプロセスデーモンの作成:vi /etc/supervisord.d/conf.d/redis.ini

[program:redis]
command=/usr/local/redis/bin/redis-server /usr/local/redis/conf/redis.conf
autostart=true
autorestart=true
startsecs=3
daemonize=no
stdout_logfile=/etc/supervisord.d/logs/redis.log;

redisプロファイルを変更する必要があります.

daemonize no
supervised auto

更新ファイル構成supervisorctl updateSupervisor redisサービスの起動:supervisorctl start redisこれでsupervisorインストール構成は終了します
お礼を言う
ここを見てくれてありがとう.この章があなたを助けてくれることを願っています.ありがとう

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