Centos7 k8s v1.5.2二进制部署安装-controller-manager和scheduler服务
2023-09-14 09:01:13 时间
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
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