api-server部署 · kubernetes

下载地址：https://github.com/kubernetes/kubernetes/releases/ ### 1、下载安装包---解压---创建软连接---删除不需要的文件。 ``` tar -zxf kubernetes-server-linux-amd64-v1.15.4.tar.gz -C ../ v kubernetes/ kubernetes-1.15.4 ln -s /opt/kubernetes-1.15.4/ /opt/kubernetes rm -rf /opt/kubernetes/kubernetes-src.tar.gz rm -rf /opt/kubernetes/server/bin/*.tar rm -rf /opt/kubernetes/server/bin/*_tag ``` ### 2、签发client证书（作用是apiserver和etcd之间通行需要的）创建生成证书签名请求（csr）的JION配置文件 ``` cd /opt/certs vi client-csr.json { "CN": "k8s-node", "hosts": [ ], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "beijing", "L": "beijing", "O": "od", "OU": "ops" } ] } cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json |cfssl-json -bare client ``` ### 3、签发kube-apiserver证书（apiserver服务端，用着客户端连接的证书）创建生成证书签名请求（csr）的JION配置文件（这里有些地址没有用到，备着以后扩容使用） ``` vi 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": "beijing", "L": "beijing", "O": "od", "OU": "ops" } ] } cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server apiserver-csr.json |cfssl-json -bare apiserver ``` ### 4、拷贝证书到各运算节点节点创建证书目录 ``` mkdir /opt/kubernetes/server/bin/cert /opt/kubernetes/server/bin/conf scp ca.pem ca-key.pem apiserver.pem apiserver-key.pem client.pem client-key.pem hdss7-21:/opt/kubernetes/server/bin/cert/ ``` ### 5、创建配置apiserver日志审计 ``` vi conf/audit.yaml apiVersion: 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" ``` ### 6、创建api-server启动文件编写 ``` 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 动添加权限 chmod +x /opt/kubernetes/server/bin/kube-apiserver.sh 解释： --apiserver-count 2 \\ 数量2 --audit-policy-file ./conf/audit.yaml \\ 日志审计规则指向audit.yaml --authorization-mode RBAC \\ 健权模式RBAC基于角色的访问控制 ``` #### 7、Supervisor配置apiserver启动文件 ``` vi /etc/supervisord.d/kube-apiserver.ini [program:kube-apiserver] 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) ``` 创建日志存放目录： mkdir -p /data/logs/kubernetes/kube-apiserver ### 8、启动程序 ``` supervisorctl update supervisorctl status ``` ### 9、查看服务情况 ``` netstat -lntp|grep kube tcp 0 0 127.0.0.1:8080 0.0.0.0:* LISTEN 3421/kube-apiserver tcp6 0 0 :::6443 :::* LISTEN 3421/kube-apiserver ```