k8s-9-controller-manager和schedul

controller-manager的安装

kube-controller-manager不需要签发证书

1. 创建controller-manager启动脚本，并添加执行权限

[root@node2 bin]# cat kube-controller-manager-startup.sh 
#!/bin/sh

WORK_DIR=$(dirname $(readlink -f $0))
[ $? -eq 0 ] && cd $WORK_DIR || exit

/opt/kubernetes/server/bin/kube-controller-manager \
    --cluster-cidr 172.27.0.0/24 \
    --leader-elect true \
    --log-dir /data/logs/kubernetes/kube-controller-manager \
    --master http://127.0.0.1:8080 \
    --service-account-private-key-file ./certs/ca-key.pem \
    --service-cluster-ip-range 192.168.0.0/16 \
    --root-ca-file ./certs/ca.pem \
    --v 2

2. 创建supervisor管理脚本

[root@node2 bin]# cat /etc/supervisord.d/kube-controller-manager.ini 
[program:kube-controller-manager-node2]
command=/opt/kubernetes/server/bin/kube-controller-manager-startup.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   


[root@node2 bin]# chmod +x kube-controller-manager-startup.sh 

3. 创建kube-controller-manager日志目录

[root@node2 bin]# mkdir -p /data/logs/kubernetes/kube-controller-manager

4. 使用supervisorctl管理kube-controller-manager服务。

[root@node2 bin]# supervisorctl update
[root@node2 bin]# supervisorctl status
etcd-server-node2                RUNNING   pid 32189, uptime 22:15:16
kube-apiserver-node2             RUNNING   pid 32188, uptime 22:15:16
kube-controller-manager-node2    STARTING 

scheduler的安装和配置

1. scheduler不需要签发证书
2. 创建scheduler的启动脚本

[root@node2 bin]# cat kube-scheduler-startup.sh 
#!/bin/sh
WORK_DIR=$(dirname $(readlink -f $0))
[ $? -eq 0 ] && cd $WORK_DIR || exit

/opt/kubernetes/server/bin/kube-scheduler \
    --leader-elect  \
    --log-dir /data/logs/kubernetes/kube-scheduler \
    --master http://127.0.0.1:8080 \
    --v 2

3. 创建supervisor管理脚本

[root@node2 bin]# cat /etc/supervisord.d/kube-scheduler.ini 
[program:kube-scheduler-node2]
command=/opt/kubernetes/server/bin/kube-scheduler-startup.sh                     
numprocs=1                                                               
directory=/opt/kubernetes/server/bin                                     
autostart=true                                                           
autorestart=true                                                         
startsecs=30                                                             
startretries=3                                                           
exitcodes=0,2                                                            
stopsignal=QUIT                                                          
stopwaitsecs=10                                                          
user=root                                                                
redirect_stderr=true                                                     
stdout_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stdout.log 
stdout_logfile_maxbytes=64MB                                             
stdout_logfile_backups=4                                                 
stdout_capture_maxbytes=1MB                                              
stdout_events_enabled=false 

[root@node2 bin]# chmod u+x /opt/kubernetes/server/bin/kube-scheduler-startup.sh

4. 创建kube-scheduler日志目录

[root@node2 bin]# 

• 检查主控节点状态

[root@node2 bin]# supervisorctl status
etcd-server-node2                RUNNING   pid 32189, uptime 1 day, 1:22:15
kube-apiserver-node2             RUNNING   pid 32188, uptime 1 day, 1:22:15
kube-controller-manager-node2    RUNNING   pid 1602, uptime 3:07:04
[root@node3 bin]# supervisorctl status
etcd-server-node3                RUNNING   pid 26427, uptime 0:02:53
kube-apiserver-node3             RUNNING   pid 26426, uptime 0:02:53
kube-controller-manager-node3    RUNNING   pid 26428, uptime 0:02:53
kube-scheduler-node3             STARTING  

[root@node3 bin]# ./kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok                   
controller-manager   Healthy   ok                   
etcd-1               Healthy   {"health": "true"}   
etcd-0               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"}