Centos7 k8s v1.5.2二进制部署安装-controller-manager和scheduler服务

一、部署Controller Manager安装

　　1、介绍

　　Controller Manager作为集群内部的管理控制中心，负责集群内的Node、Pod副本、服务端点（Endpoint）、命名空间（Namespace）、服务账号（ServiceAccount）、资源定额（ResourceQuota）的管理，当某个Node意外宕机时，Controller Manager会及时发现并执行自动化修复流程，确保集群始终处于预期的工作状态。

　　

　　每个Controller通过API Server提供的接口实时监控整个集群的每个资源对象的当前状态，当发生各种故障导致系统状态发生变化时，会尝试将系统状态修复到“期望状态”。

 　　controller-manager安装在apiserver节点服务器22、23上：

vim /opt/kubernetes/server/bin/kube-controller-manager.sh

#!/bin/sh
./kube-controller-manager 
  --cluster-cidr 172.7.0.0/16 
  --leader-elect true 
  --log-dir /data/logs/kubernetes/kube-controller-manager 
  --master http://127.0.0.1:8080 
  --service-account-private-key-file ./cert/ca-key.pem 
  --service-cluster-ip-range 192.168.0.0/16 
  --root-ca-file ./cert/ca.pem 
  --v 2

chmod +x /opt/kubernetes/server/bin/kube-controller-manager.sh

mkdir -p /data/logs/kubernetes/kube-controller-manager  

　　2、编辑supervisord启动脚本：根据部署主机修改

vi /etc/supervisord.d/kube-conntroller-manager.ini

[program:kube-controller-manager-112-22]
command=/opt/kubernetes/server/bin/kube-controller-manager.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-controller-manager/controller.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)

　supervisorctl update
　supervisorctl status 

二、部署scheduler服务

　　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。

　　

　　1、编写启动脚本

vim /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
  
chmod +x /opt/kubernetes/server/bin/kube-scheduler.sh
mkdir -p /data/logs/kubernetes/kube-scheduler

　　2、编辑supervisord启动脚本

vim /etc/supervisord.d/kube-scheduler.ini

[program:kube-scheduler-112-22]
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)

supervisorctl update

supervisorctl status

ln -s /opt/kubernetes/server/bin/kubectl /usr/bin/kubectl

kubectl get cs