一、集群规划
| 主机名 | 角色 | ip |
|---|---|---|
| sx7-21.host.com | kube-apiserver | 10.4.7.21 |
| sx7-22.host.com | kube-apiserver | 10.4.7.22 |
二、下载（在sx7-21,22主机上）
cd /opt https://github.com/kubernetes/kubernetes/releases tar xf kubernetes-server-linux-amd64.tar.gz mv kubernetes/ kubernetes-v1.15.12 ln -s /opt/kubernetes-v1.15.12/ /opt/kubernetes 删除无用的包 cd /opt/kubernetes rm -rf kubernetes-src.tar.gz cd server/bin rm -rf *.tar *_tag
三、签发证书（在sx7-200主机上）
- 签发client证书
cd /opt/certs
vim client-csr.json { "CN": "k8s-node", "hosts": [ ], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "ShangHai", "L": "ShangHai", "O": "xy", "OU": "ops" } ] }
- 生成证书文件，apiserver和etcd之间的
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json |cfssl-json -bare client
- 签发apiserver证书
vim apiserver-csr.json
{
"CN": "k8s-apiserver",
"hosts": [
"127.0.0.1",
"192.168.0.1",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local",
"10.4.7.10",
"10.4.7.21",
"10.4.7.22",
"10.4.7.23"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "ShangHai",
"L": "ShangHai",
"O": "xy",
"OU": "ops"
}
]
}
- 生成apiserver证书文件
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server apiserver-csr.json |cfssl-json -bare apiserver
四、拷贝证书至apiserver(在sx7-21,22)
mkdir /opt/kubernetes/server/bin/cert
cd /opt/kubernetes/server/bin/cert
scp sx7-200:/opt/certs/ca.pem .
scp sx7-200:/opt/certs/ca-key.pem .
scp sx7-200:/opt/certs/client.pem .
scp sx7-200:/opt/certs/client-key.pem .
scp sx7-200:/opt/certs/apiserver.pem .
scp sx7-200:/opt/certs/apiserver-key.pem .
- 创建配置文件
cd .. mkdir conf cd conf
vi audit.yamlapiVersion: audit.k8s.io/v1beta1 # This is required. kind: Policy # Don't generate audit events for all requests in RequestReceived stage. omitStages: - "RequestReceived" rules: # Log pod changes at RequestResponse level - level: RequestResponse resources: - group: "" # Resource "pods" doesn't match requests to any subresource of pods, # which is consistent with the RBAC policy. resources: ["pods"] # Log "pods/log", "pods/status" at Metadata level - level: Metadata resources: - group: "" resources: ["pods/log", "pods/status"] # Don't log requests to a configmap called "controller-leader" - level: None resources: - group: "" resources: ["configmaps"] resourceNames: ["controller-leader"] # Don't log watch requests by the "system:kube-proxy" on endpoints or services - level: None users: ["system:kube-proxy"] verbs: ["watch"] resources: - group: "" # core API group resources: ["endpoints", "services"] # Don't log authenticated requests to certain non-resource URL paths. - level: None userGroups: ["system:authenticated"] nonResourceURLs: - "/api*" # Wildcard matching. - "/version" # Log the request body of configmap changes in kube-system. - level: Request resources: - group: "" # core API group resources: ["configmaps"] # This rule only applies to resources in the "kube-system" namespace. # The empty string "" can be used to select non-namespaced resources. namespaces: ["kube-system"] # Log configmap and secret changes in all other namespaces at the Metadata level. - level: Metadata resources: - group: "" # core API group resources: ["secrets", "configmaps"] # Log all other resources in core and extensions at the Request level. - level: Request resources: - group: "" # core API group - group: "extensions" # Version of group should NOT be included. # A catch-all rule to log all other requests at the Metadata level. - level: Metadata # Long-running requests like watches that fall under this rule will not # generate an audit event in RequestReceived. omitStages: - "RequestReceived"
- 创建apiserver启动脚本
vi /opt/kubernetes/server/bin/kube-apiserver.sh#!/bin/bash ./kube-apiserver \ --apiserver-count 2 \ --audit-log-path /data/logs/kubernetes/kube-apiserver/audit-log \ --audit-policy-file ./conf/audit.yaml \ --authorization-mode RBAC \ --client-ca-file ./cert/ca.pem \ --requestheader-client-ca-file ./cert/ca.pem \ --enable-admission-plugins NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota \ --etcd-cafile ./cert/ca.pem \ --etcd-certfile ./cert/client.pem \ --etcd-keyfile ./cert/client-key.pem \ --etcd-servers https://10.4.7.12:2379,https://10.4.7.21:2379,https://10.4.7.22:2379 \ --service-account-key-file ./cert/ca-key.pem \ --service-cluster-ip-range 192.168.0.0/16 \ --service-node-port-range 3000-29999 \ --target-ram-mb=1024 \ --kubelet-client-certificate ./cert/client.pem \ --kubelet-client-key ./cert/client-key.pem \ --log-dir /data/logs/kubernetes/kube-apiserver \ --tls-cert-file ./cert/apiserver.pem \ --tls-private-key-file ./cert/apiserver-key.pem \ --v 2
给执行权限
chmod +x /opt/kubernetes/server/bin/kube-apiserver.shmkdir -p /data/logs/kubernetes/kube-apiserver
- 创建supervison配置
vi /etc/supervisord.d/kube-apiserver.ini // 在部署另一台apiserver时修改红色字体即可
[program:kube-apiserver-7-21]
command=/opt/kubernetes/server/bin/kube-apiserver.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-apiserver/apiserver.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)- 启动服务
supervisorctl update
查看状态
supervisorctl status