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  • 二进制安装kubernetes(四) kube-scheduler组件安装

    介绍资料转载地址:https://www.jianshu.com/p/c4c60ccda8d0

    kube-scheduler在集群中的作用

    kube-scheduler是以插件形式存在的组件,正因为以插件形式存在,所以其具有可扩展可定制的特性。kube-scheduler相当于整个集群的调度决策者,其通过预选和优选两个过程决定容器的最佳调度位置。

    kube-scheduler源码中的关键性调用链

    kube-scheduler部署在hdss7-21,22上:
    创建启动脚本:
    # vi /opt/kubernetes/server/bin/kube-scheduler.sh
    #!/bin/sh
    ./kube-scheduler 
      --leader-elect  
      --log-dir /data/logs/kubernetes/kube-scheduler 
      --master http://127.0.0.1:8080 
      --v 2

    执行权限:

    # chmod +x /opt/kubernetes/server/bin/kube-scheduler.sh

    创建日志存储目录:

    # mkdir -p /data/logs/kubernetes/kube-scheduler

    编辑supervisord脚本:红色部分第二台需要修改

     # vi /etc/supervisord.d/kube-scheduler.ini
    [program:kube-scheduler-7-21]
    command=/opt/kubernetes/server/bin/kube-scheduler.sh                     ; the program (relative uses PATH, can take args)
    numprocs=1                                                               ; number of processes copies to start (def 1)
    directory=/opt/kubernetes/server/bin                                     ; directory to cwd to before exec (def no cwd)
    autostart=true                                                           ; start at supervisord start (default: true)
    autorestart=true                                                         ; retstart at unexpected quit (default: true)
    startsecs=30                                                             ; 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)
    user=root                                                                ; setuid to this UNIX account to run the program
    redirect_stderr=true                                                     ; redirect proc stderr to stdout (default false)
    stdout_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stdout.log ; stderr log path, NONE for none; default AUTO
    stdout_logfile_maxbytes=64MB                                             ; max # logfile bytes b4 rotation (default 50MB)
    stdout_logfile_backups=4                                                 ; # 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)

    更新supervisord:

    # supervisorctl update
    # supervisorctl status

     检查一下状态:

    # ln -s /opt/kubernetes/server/bin/kubectl /usr/bin/kubectl
    # kubectl get cs

    至此kube-scheduler已经安装完成,接下来安装kubelet。

     
     
     
     
     
     
     
     
     
     
     
     
     
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  • 原文地址:https://www.cnblogs.com/slim-liu/p/11851361.html
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