Kubernetes1.9 二进制版集群+ipvs+coredns
节点构造如下 :
| 节点ip | 节点角色 | hostname |
|---|---|---|
| 192.168.0.57 | node | bigdata3 |
| 192.168.0.56 | node | bigdata4 |
| 192.168.0.58 | node | bigdata5 |
| 192.168.0.48 | master01 | ingest01 |
| 192.168.0.49 | master02 | ingest02 |
| 192.168.0.50 | master03 | ingest03 |
| 192.168.0.38 | etcd01 | etcd01 |
| 192.168.0.39 | etcd02 | etcd02 |
| 192.168.0.40 | etcd03 | etcd03 |
集群网络结构：
| 网络名称 | 网络范围 |
|---|---|
| 集群网络 | 172.20.0.0/16 |
| svc网络 | 172.21.0.0/16 |
| 物理网络 | 192.168.0.0/24 |
组件配置：
| 系统 | 参数 |
|---|---|
| 系统 | centos7 |
| 内核版本 | 4.4 |
| docker-data数据盘 | ext4 |
| docker | 1.126 |
| Storage | Driver: overlay2 |
| Backing | Filesystem: extfs |
| Logging | Driver: journald |
| Cgroup | Driver: systemd |
一、所有节点升级内核，安装Docker 1.126
1.1 升级内核
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm ;yum --enablerepo=elrepo-kernel install kernel-lt-devel kernel-lt -y #查看默认启动顺序 awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg CentOS Linux (4.4.4-1.el7.elrepo.x86_64) 7 (Core) CentOS Linux (3.10.0-327.10.1.el7.x86_64) 7 (Core) CentOS Linux (0-rescue-c52097a1078c403da03b8eddeac5080b) 7 (Core) #默认启动的顺序是从0开始，新内核是从头插入（目前位置在0，而4.4.4的是在1），所以需要选择0。 grub2-set-default 0 #重启 reboot #检查内核，成功升级到4.4 uname -a Linux bigdata5 4.4.104-1.el7.elrepo.x86_64 #1 SMP Tue Dec 5 12:46:32 EST 2017 x86_64 x86_64 x86_64 GNU/Linux
1.2 所有节点安装Docker, 修改文件系统为ovelay2驱动
#安装docker yum install docker-common-1.12.6 docker-client-1.12.6 docker-1.12.6-61 -y #设置文件系统为ovelay2驱动 cat /etc/docker/daemon.json { "storage-driver": "overlay2" }
1.3 所有节点安装ipvsadm
yum install ipvsadm -y
二、准备 k8s-node、master、etcd、flanneld二进制文件
####注意所有的文件由master ingest01这台机下发，配置ssh信任所有机器 ####下载目录为/root/ [root@ingest01 ~]# pwd /root wget https://dl.k8s.io/v1.9.0/kubernetes-server-linux-amd64.tar.gz wget https://github.com/coreos/etcd/releases/download/v3.2.11/etcd-v3.2.11-linux-amd64.tar.gz wget https://github.com/coreos/flannel/releases/download/v0.9.0/flannel-v0.9.0-linux-amd64.tar.gz
三、下发所有二进制文件
3.1 解压
tar xvf kubernetes-server-linux-amd64.tar.gz && tar xvf etcd-v3.2.11-linux-amd64.tar.gz && tar xvf flannel-v0.9.0-linux-amd64.tar.gz
3.2 创建node，master ,etcd所需的二进制目录并进行归类
mkdir -p /root/kubernetes/server/bin/{node,master,etcd} mv /root/kubernetes/server/bin/kubelet /root/kubernetes/server/bin/node/ mv /root/mk-docker-opts.sh /root/kubernetes/server/bin/node/ mv /root/flanneld /root/kubernetes/server/bin/node/ mv /root/kubernetes/server/bin/kube-* /root/kubernetes/server/bin/master/ mv /root/kubernetes/server/bin/kubelet /root/kubernetes/server/bin/master/ mv /root/kubernetes/server/bin/kubectl /root/kubernetes/server/bin/master/ mv /root/etcd-v3.2.4-linux-amd64/etcd* /root/kubernetes/server/bin/etcd/
3.3 下发node以及flanneld二进制文件
for node in bigdata3 bigdata4 bigdata5 ingest01;do rsync -avzP /root/kubernetes/server/bin/node/ ${node}:/usr/local/bin/ done
3.4 下发master 二进制文件
for master in ingest01 ingets01 ingest03;do rsync -avzP /root/kubernetes/server/bin/master/ ${master}:/usr/local/bin/ done
3.5 下发etcd文件
for etcd in etcd01 etcd02 etcd03;do rsync -avzP /root/kubernetes/server/bin/etcd/ ${etcd}:/usr/local/bin/ done
四、创建集群systemctl 启动服务service文件
4.1 创建服务归类文件夹
mkdir -p /root/kubernetes/server/bin/{node-service,master-service,etcd-service,docker-service,ssl}
4.2 创建node 所需的文件
#docker.service cat >/root/kubernetes/server/bin/node-service/docker.service <<'HERE' [Unit] Description=Docker Application Container Engine Documentation=http://docs.docker.com After=network.target Wants=docker-storage-setup.service Requires=docker-cleanup.timer [Service] Type=notify NotifyAccess=all KillMode=process EnvironmentFile=-/etc/sysconfig/docker EnvironmentFile=-/etc/sysconfig/docker-storage EnvironmentFile=-/etc/sysconfig/docker-network EnvironmentFile=/run/flannel/docker Environment=GOTRACEBACK=crash Environment=DOCKER_HTTP_HOST_COMPAT=1 Environment=PATH=/usr/libexec/docker:/usr/bin:/usr/sbin ExecStart=/usr/bin/dockerd-current $DOCKER_NETWORK_OPTIONS \ --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current \ --default-runtime=docker-runc \ --exec-opt native.cgroupdriver=systemd \ --userland-proxy-path=/usr/libexec/docker/docker-proxy-current \ $OPTIONS \ $DOCKER_STORAGE_OPTIONS \ $DOCKER_NETWORK_OPTIONS \ $ADD_REGISTRY \ $BLOCK_REGISTRY \ $INSECURE_REGISTRY ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=1048576 LimitNPROC=1048576 LimitCORE=infinity TimeoutStartSec=0 Restart=on-abnormal MountFlags=slave [Install] WantedBy=multi-user.target HERE ---------- #kubeliet.service cat >/root/kubernetes/server/bin/node-service/kubelet.service <<'HERE' [Unit] Description=Kubernetes Kubelet Documentation=https://github.com/GoogleCloudPlatform/kubernetes After=docker.service Requires=docker.service [Service] WorkingDirectory=/var/lib/kubelet ExecStart=/usr/local/bin/kubelet \ --address=192.168.0.48 \ --hostname-override=ingest01 \ --pod-infra-container-image=k8s-registry.local/public/pod-infrastructure:sfv1 \ --experimental-bootstrap-kubeconfig=/etc/kubernetes/ssl/bootstrap.kubeconfig \ --kubeconfig=/etc/kubernetes/ssl/kubelet.kubeconfig \ --cert-dir=/etc/kubernetes/ssl \ --hairpin-mode promiscuous-bridge \ --allow-privileged=true \ --serialize-image-pulls=false \ --logtostderr=true \ --cgroup-driver=systemd \ --cluster_dns=172.21.0.2 \ --cluster_domain=cluster.local \ --v=2 Restart=on-failure RestartSec=5 [Install] WantedBy=multi-user.target HERE ---------- #flanneld.service cat >/root/kubernetes/server/bin/node-service/flanneld.service <<'HERE' [Unit] Description=Flanneld overlay address etcd agent After=network.target After=network-online.target Wants=network-online.target After=etcd.service Before=docker.service [Service] Type=notify ExecStart=/usr/local/bin/flanneld \ -etcd-cafile=/etc/kubernetes/ssl/k8s-root-ca.pem \ -etcd-certfile=/etc/kubernetes/ssl/kubernetes.pem \ -etcd-keyfile=/etc/kubernetes/ssl/kubernetes-key.pem \ -etcd-endpoints=https://192.168.0.38:2379,https://192.168.0.39:2379,https://192.168.0.40:2379 \ -etcd-prefix=/kubernetes/network \ -iface=eth0 ExecStartPost=/usr/local/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/docker Restart=on-failure [Install] WantedBy=multi-user.target RequiredBy=docker.service HERE
4.3 创建master 所需service文件
#kube-apiserver.service cat >/root/kubernetes/server/bin/master-service/kube-apiserver.service <<'HERE' [Unit] Description=Kubernetes API Server Documentation=https://github.com/GoogleCloudPlatform/kubernetes After=network.target [Service] ExecStart=/usr/local/bin/kube-apiserver \ --admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,ResourceQuota,NodeRestriction \ --advertise-address=192.168.0.48 \ --bind-address=192.168.0.48 \ --insecure-bind-address=127.0.0.1 \ --kubelet-https=true \ --runtime-config=rbac.authorization.k8s.io/v1beta1 \ --authorization-mode=RBAC,Node \ --enable-bootstrap-token-auth \ --token-auth-file=/etc/kubernetes/ssl/token.csv \ --service-cluster-ip-range=172.21.0.0/16 \ --service-node-port-range=300-9000 \ --tls-cert-file=/etc/kubernetes/ssl/kubernetes.pem \ --tls-private-key-file=/etc/kubernetes/ssl/kubernetes-key.pem \ --client-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \ --service-account-key-file=/etc/kubernetes/ssl/k8s-root-ca-key.pem \ --etcd-cafile=/etc/kubernetes/ssl/k8s-root-ca.pem \ --etcd-certfile=/etc/kubernetes/ssl/kubernetes.pem \ --etcd-keyfile=/etc/kubernetes/ssl/kubernetes-key.pem \ --etcd-servers=https://192.168.0.38:2379,https://192.168.0.39:2379,https://192.168.0.40:2379 \ --enable-swagger-ui=true \ --allow-privileged=true \ --apiserver-count=3 \ --audit-log-maxage=30 \ --audit-log-maxbackup=3 \ --audit-log-maxsize=100 \ --audit-log-path=/var/lib/audit.log \ --event-ttl=1h \ --v=2 Restart=on-failure RestartSec=5 Type=notify LimitNOFILE=65536 [Install] WantedBy=multi-user.target HERE ---------- #kube-controller-manager.service cat >/root/kubernetes/server/bin/master-service/kube-controller-manager.service <<'HERE' [Unit] Description=Kubernetes Controller Manager Documentation=https://github.com/GoogleCloudPlatform/kubernetes [Service] ExecStart=/usr/local/bin/kube-controller-manager \ --address=127.0.0.1 \ --master=http://127.0.0.1:8080 \ --allocate-node-cidrs=true \ --service-cluster-ip-range=172.21.0.0/16 \ --cluster-cidr=172.20.0.0/16 \ --cluster-name=kubernetes \ --cluster-signing-cert-file=/etc/kubernetes/ssl/k8s-root-ca.pem \ --cluster-signing-key-file=/etc/kubernetes/ssl/k8s-root-ca-key.pem \ --service-account-private-key-file=/etc/kubernetes/ssl/k8s-root-ca-key.pem \ --root-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \ --leader-elect=true \ --v=2 Restart=on-failure RestartSec=5 [Install] WantedBy=multi-user.target HERE ---------- #kube-scheduler.service cat >/root/kubernetes/server/bin/master-service/scheduler.service <<'HERE' [Unit] Description=Kubernetes Scheduler Documentation=https://github.com/GoogleCloudPlatform/kubernetes [Service] ExecStart=/usr/local/bin/kube-scheduler \ --address=127.0.0.1 \ --master=http://127.0.0.1:8080 \ --leader-elect=true \ --v=2 Restart=on-failure RestartSec=5 [Install] WantedBy=multi-user.target HERE
4.4 创建etcd所需service文件
etcd 各节点请自行参照此配置进行更改
cat >/root/kubernetes/server/bin/etcd-service/etcd.service <<'HERE' [Unit] Description=Etcd Server After=network.target After=network-online.target Wants=network-online.target Documentation=https://github.com/coreos [Service] Type=notify WorkingDirectory=/var/lib/etcd/ EnvironmentFile=-/etc/etcd/etcd.conf ExecStart=/usr/local/bin/etcd \ --name=etcd01 \ --cert-file=/etc/kubernetes/ssl/kubernetes.pem \ --key-file=/etc/kubernetes/ssl/kubernetes-key.pem \ --peer-cert-file=/etc/kubernetes/ssl/kubernetes.pem \ --peer-key-file=/etc/kubernetes/ssl/kubernetes-key.pem \ --trusted-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \ --peer-trusted-ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \ --initial-advertise-peer-urls=https://192.168.0.38:2380 \ --listen-peer-urls=https://192.168.0.38:2380 \ --listen-client-urls=https://192.168.0.38:2379,http://127.0.0.1:2379 \ --advertise-client-urls=https://192.168.0.38:2379 \ --initial-cluster-token=etcd-cluster-0 \ --initial-cluster=etcd01=https://192.168.0.38:2380,etcd02=https://192.168.0.39:2380,etcd03=https://192.168.0.40:2380 \ --initial-cluster-state=new \ --data-dir=/var/lib/etcd Restart=on-failure RestartSec=5 LimitNOFILE=65536 [Install] WantedBy=multi-user.target HERE
五、下发service文件
5.1 下发node所需的service文件
#注意更改service文件中的主机名和ip,每个节点不一样 for node in {bigdata3,bigdata4,bigdata5,ingest01,ingest02,ingest03};do rsync -avzP /root/kubernetes/server/bin/node-service/ ${node}:/lib/systemd/system/ done
5.2 下发master所需的service文件
#注意更改service文件中的主机名和ip,每个节点不一样 for master in {ingest01,ingest02,ingest03};do rsync -avzP /root/kubernetes/server/bin/master-service/ ${master}:/lib/systemd/system/ done
5.3 下发etcd所需的service文件
#注意更改service文件中的主机名和ip,每个节点不一样 for master in {etcd01,etcd02,etcd03};do rsync -avzP /root/kubernetes/server/bin/etcd-service/ ${etcd}:/lib/systemd/system/ done
六、创建集群认证证书文件,下发文件
6.1 生成文件
#安装 CFSSL #直接使用二进制源码包安装 wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 chmod +x cfssl_linux-amd64 mv cfssl_linux-amd64 /usr/local/bin/cfssl wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 chmod +x cfssljson_linux-amd64 mv cfssljson_linux-amd64 /usr/local/bin/cfssljson wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 chmod +x cfssl-certinfo_linux-amd64 mv cfssl-certinfo_linux-amd64 /usr/local/bin/cfssl-certinfo export PATH=/usr/local/bin:$PATH ---------- **#admin-csr.json** cat >/root/kubernetes/server/bin/ssl/admin-csr.json <<'HERE' { "CN": "admin", "hosts": [], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "Shenzhen", "L": "Shenzhen", "O": "system:masters", "OU": "System" } ] } HERE ---------- #k8s-gencert.json cat >/root/kubernetes/server/bin/ssl/k8s-gencert.json <<'HERE' { "signing": { "default": { "expiry": "87600h" }, "profiles": { "kubernetes": { "usages": [ "signing", "key encipherment", "server auth", "client auth" ], "expiry": "87600h" } } } } HERE ---------- #k8s-root-ca-csr.json cat >/root/kubernetes/server/bin/ssl/k8s-root-ca-csr.json <<'HERE' { "CN": "kubernetes", "key": { "algo": "rsa", "size": 4096 }, "names": [ { "C": "CN", "ST": "Shenzhen", "L": "Shenzhen", "O": "k8s", "OU": "System" } ] } HERE ---------- #kube-proxy-csr.json cat >/root/kubernetes/server/bin/ssl/kube-proxy-csr.json <<'HERE' { "CN": "system:kube-proxy", "hosts": [], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "Shenzhen", "L": "Shenzhen", "O": "k8s", "OU": "System" } ] } HERE ---------- #注意，此处需要将dns首ip、etcd、k8s-master节点的ip都填上 cat >/root/kubernetes/server/bin/ssl/kubernetes-csr.json <<'HERE' { "CN": "kubernetes", "hosts": [ "127.0.0.1", "192.168.0.56", "192.168.0.57", "192.168.0.58", "192.168.0.38", "192.168.0.39", "192.168.0.40", "192.168.0.48", "192.168.0.49", "192.168.0.50", "172.21.0.1", "kubernetes", "kubernetes.default", "kubernetes.default.svc", "kubernetes.default.svc.cluster", "kubernetes.default.svc.cluster.local" ], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "Shenzhen", "L": "Shenzhen", "O": "k8s", "OU": "System" } ] } HERE ----------
6.2 生成通用证书以及kubeconfig
#进入ssl目录 cd /root/kubernetes/server/bin/ssl/ # 生成证书 cfssl gencert --initca=true k8s-root-ca-csr.json | cfssljson --bare k8s-root-ca for targetName in kubernetes admin kube-proxy; do cfssl gencert --ca k8s-root-ca.pem --ca-key k8s-root-ca-key.pem --config k8s-gencert.json --profile kubernetes $targetName-csr.json | cfssljson --bare $targetName done # 生成配置 #注意，此处定义api-server的服务ip，此处用HA模式，如果你的master是单节点，请配置成单个api6443的ip即可 #注意关于三台master节点HA高可用请参见我另一篇HA实战 #地址：http://blog.csdn.net/idea77/article/details/71508859 export KUBE_APISERVER="https://127.0.0.1:6443" export BOOTSTRAP_TOKEN=$(head -c 16 /dev/urandom | od -An -t x | tr -d ' ') echo "Tokne: ${BOOTSTRAP_TOKEN}" cat > token.csv <<EOF ${BOOTSTRAP_TOKEN},kubelet-bootstrap,10001,"system:kubelet-bootstrap" EOF ---------- echo "Create kubelet bootstrapping kubeconfig..." kubectl config set-cluster kubernetes \ --certificate-authority=k8s-root-ca.pem \ --embed-certs=true \ --server=${KUBE_APISERVER} \ --kubeconfig=bootstrap.kubeconfig kubectl config set-credentials kubelet-bootstrap \ --token=${BOOTSTRAP_TOKEN} \ --kubeconfig=bootstrap.kubeconfig kubectl config set-context default \ --cluster=kubernetes \ --user=kubelet-bootstrap \ --kubeconfig=bootstrap.kubeconfig ---------- echo "Create kube-proxy kubeconfig..." kubectl config set-cluster kubernetes \ --certificate-authority=k8s-root-ca.pem \ --embed-certs=true \ --server=${KUBE_APISERVER} \ --kubeconfig=kube-proxy.kubeconfig ---------- kubectl config set-credentials kube-proxy \ --client-certificate=kube-proxy.pem \ --client-key=kube-proxy-key.pem \ --embed-certs=true \ --kubeconfig=kube-proxy.kubeconfig ---------- kubectl config set-context default \ --cluster=kubernetes \ --user=kube-proxy \ --kubeconfig=kube-proxy.kubeconfig kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig ---------- # 生成高级审计配置 cat >> audit-policy.yaml <<EOF # Log all requests at the Metadata level. apiVersion: audit.k8s.io/v1beta1 kind: Policy rules: - level: Metadata EOF ---------- # 生成集群管理员admin kubeconfig配置文件供kubectl调用 # admin set-cluster kubectl config set-cluster kubernetes \ --certificate-authority=k8s-root-ca.pem\ --embed-certs=true \ --server=${KUBE_APISERVER} \ --kubeconfig=./kubeconfig # admin set-credentials kubectl config set-credentials kubernetes-admin \ --client-certificate=admin.pem \ --client-key=admin-key.pem \ --embed-certs=true \ --kubeconfig=./kubeconfig # admin set-context kubectl config set-context kubernetes-admin@kubernetes \ --cluster=kubernetes \ --user=kubernetes-admin \ --kubeconfig=./kubeconfig # admin set default context kubectl config use-context kubernetes-admin@kubernetes \ --kubeconfig=./kubeconfig
6.3 下发证书文件至所有节点
#创建ssl文件夹 for node in {bigdata3,bigdata4,bigdata5,ingest01,ingest02,ingest03,etcd01,etcd02,etcd03};do ssh ${node} "mkdir -p /etc/kubernetes/ssl/ " done ---------- #下发文件 for ssl in {bigdata3,bigdata4,bigdata5,ingest01,ingest02,ingest03,etcd01,etcd02,etcd03};do rsync -avzP /root/kubernetes/server/bin/ssl/ ${ssl}:/etc/kubernetes/ssl/ done ---------- #创建master /root/.kube 目录,复制超级admin授权config for master in {ingest01,ingest02,ingest03};do ssh ${master} "mkdir -p /root/.kube ; \cp -f /etc/kubernetes/ssl/kubeconfig /root/.kube/config " done ----------
七、启动所有节点服务，验证服务
注意启动之前确认配置文件修改无误
7.1 启动 etcd 节点服务
#启动etcd集群 for node in {etcd01,etcd02,etcd03};do ssh ${node} "systemctl daemon-reload && systemctl start etcd && systemctl enable etcd" done ---------- #检查集群健康 etcdctl \ --ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem\ --cert-file=/etc/kubernetes/ssl/kubernetes.pem \ --key-file=/etc/kubernetes/ssl/kubernetes-key.pem \ cluster-health ---------- #设置集群网络范围 etcdctl --endpoints=https://192.168.0.38:2379,https://192.168.0.39:2379,https://192.168.0.40:2379 \ --ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem \ --cert-file=/etc/kubernetes/ssl/kubernetes.pem \ --key-file=/etc/kubernetes/ssl/kubernetes-key.pem \ mkdir /kubernetes/network ---------- etcdctl --endpoints=https://192.168.0.38:2379,https://192.168.0.39:2379,https://192.168.0.40:2379 \ --ca-file=/etc/kubernetes/ssl/k8s-root-ca.pem\ --cert-file=/etc/kubernetes/ssl/kubernetes.pem \ --key-file=/etc/kubernetes/ssl/kubernetes-key.pem \ mk /kubernetes/network/config '{ "Network": "172.20.0.0/16", "Backend": { "Type": "vxlan", "VNI": 1 }}' ----------
7.2 启动master节点服务
#注意关于三台master节点HA高可用请参见我另一篇HA实战 #地址：http://blog.csdn.net/idea77/article/details/71508859 for master in {ingest01,ingest02,ingest03};do ssh ${master} "systemctl daemon-reload && systemctl start flanneld docker kube-apiserver kube-controller-manager kube-scheduler kubelet && systemctl enable flanneld docker kube-apiserver kube-controller-manager kube-scheduler kubelet " done
7.3 启动node节点服务
for node in {bigdata3,bigdata4,bigdata5};do ssh ${node} "systemctl daemon-reload && systemctl start flanneld docker kubelet && systemctl enable flanneld docker kubelet " done
7.4 验证集群
# 在master机器上执行，授权kubelet-bootstrap角色 kubectl create clusterrolebinding kubelet-bootstrap \ --clusterrole=system:node-bootstrapper \ --user=kubelet-bootstrap #通过所有集群认证 kubectl get csr kubectl get csr | awk '/Pending/ {print $1}' | xargs kubectl certificate approve #检查node Ready kubectl get nodes NAME STATUS ROLES AGE VERSION bigdata3 Ready <none> 4d v1.9.0 bigdata4 Ready <none> 4d v1.9.0 bigdata5 Ready <none> 4d v1.9.0 ingest01 Ready <none> 4d v1.9.0 ingest02 Ready <none> 4d v1.9.0 ingest03 Ready <none> 4d v1.9.0
八、布署kube-router-ipvs取代kube-proxy、kube-dashboard、core-dns取代kube-dns
8.1 布署kube-router组件
#镜相下载：docker.io/cloudnativelabs/kube-router:latest apiVersion: v1 kind: ConfigMap metadata: name: kube-router-cfg namespace: kube-system labels: tier: node k8s-app: kube-router data: cni-conf.json: | { "name":"kubernetes", "type":"bridge", "bridge":"kube-bridge", "isDefaultGateway":true, "ipam": { "type":"host-local" } } --- apiVersion: extensions/v1beta1 kind: DaemonSet metadata: labels: k8s-app: kube-router tier: node name: kube-router namespace: kube-system spec: template: metadata: labels: k8s-app: kube-router tier: node annotations: scheduler.alpha.kubernetes.io/critical-pod: '' spec: serviceAccountName: kube-router serviceAccount: kube-router containers: - name: kube-router image: k8s-registry.local/public/kube-router:latest imagePullPolicy: Always args: - --run-router=true - --run-firewall=true - --run-service-proxy=true - --kubeconfig=/var/lib/kube-router/kubeconfig env: - name: NODE_NAME valueFrom: fieldRef: fieldPath: spec.nodeName resources: requests: cpu: 250m memory: 250Mi securityContext: privileged: true volumeMounts: - name: lib-modules mountPath: /lib/modules readOnly: true - name: cni-conf-dir mountPath: /etc/cni/net.d - name: kubeconfig mountPath: /var/lib/kube-router/kubeconfig - name: run mountPath: /var/run/docker.sock readOnly: true initContainers: - name: install-cni image: k8s-registry.local/public/busybox:latest imagePullPolicy: Always command: - /bin/sh - -c - set -e -x; if [ ! -f /etc/cni/net.d/10-kuberouter.conf ]; then TMP=/etc/cni/net.d/.tmp-kuberouter-cfg; cp /etc/kube-router/cni-conf.json ${TMP}; mv ${TMP} /etc/cni/net.d/10-kuberouter.conf; fi volumeMounts: - name: cni-conf-dir mountPath: /etc/cni/net.d - name: kube-router-cfg mountPath: /etc/kube-router hostNetwork: true hostIPC: true hostPID: true tolerations: - key: CriticalAddonsOnly operator: Exists - effect: NoSchedule key: node-role.kubernetes.io/master operator: Exists volumes: - name: lib-modules hostPath: path: /lib/modules - name: cni-conf-dir hostPath: path: /etc/cni/net.d - name: run hostPath: path: /var/run/docker.sock - name: kube-router-cfg configMap: name: kube-router-cfg - name: kubeconfig hostPath: path: /etc/kubernetes/ssl/kubeconfig # configMap: # name: kube-proxy # items: # - key: kubeconfig.conf # path: kubeconfig --- apiVersion: v1 kind: ServiceAccount metadata: name: kube-router namespace: kube-system --- kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1beta1 metadata: name: kube-router namespace: kube-system rules: - apiGroups: - "" resources: - namespaces - pods - services - nodes - endpoints verbs: - list - get - watch - apiGroups: - "networking.k8s.io" resources: - networkpolicies verbs: - list - get - watch - apiGroups: - extensions resources: - networkpolicies verbs: - get - list - watch --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1beta1 metadata: name: kube-router roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: kube-router subjects: - kind: ServiceAccount name: kube-router namespace: kube-system kubectl create -f kube-router.yaml
8.2 布署 kube-dashboard
#镜相下载：registry.docker-cn.com/kubernetesdashboarddev/kubernetes-dashboard-amd64:head apiVersion: v1 kind: ServiceAccount metadata: name: kubernetes-dashboard namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: kubernetes-dashboard labels: k8s-app: kubernetes-dashboard roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kube-system --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: kubernetes-dashboard namespace: kube-system labels: k8s-app: kubernetes-dashboard kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile spec: selector: matchLabels: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard annotations: scheduler.alpha.kubernetes.io/critical-pod: '' spec: serviceAccountName: kubernetes-dashboard containers: - name: kubernetes-dashboard image: k8s-registry.local/public/kubernetes-dashboard-amd64:1.8.0 resources: # keep request = limit to keep this container in guaranteed class limits: cpu: 100m memory: 300Mi requests: cpu: 100m memory: 100Mi ports: - containerPort: 9090 livenessProbe: httpGet: path: / port: 9090 initialDelaySeconds: 30 timeoutSeconds: 30 tolerations: - key: "CriticalAddonsOnly" operator: "Exists" ---------- kubectl create -f dashboard.yaml ---------- apiVersion: v1 kind: Service metadata: name: kubernetes-dashboard namespace: kube-system labels: k8s-app: kubernetes-dashboard kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile spec: selector: k8s-app: kubernetes-dashboard type: NodePort ports: - port: 9090 targetPort: 9090 nodePort: 8601 kubectl create -f dashboard-svc.yaml
8.3 布署coredns
#镜相下载地址： registry.docker-cn.com/coredns/coredns:0.9.10 apiVersion: v1 kind: ServiceAccount metadata: name: coredns namespace: kube-system labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: labels: kubernetes.io/bootstrapping: rbac-defaults addonmanager.kubernetes.io/mode: Reconcile name: system:coredns rules: - apiGroups: - "" resources: - endpoints - services - pods - namespaces verbs: - list - watch --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: annotations: rbac.authorization.kubernetes.io/autoupdate: "true" labels: kubernetes.io/bootstrapping: rbac-defaults addonmanager.kubernetes.io/mode: EnsureExists name: system:coredns roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: system:coredns subjects: - kind: ServiceAccount name: coredns namespace: kube-system --- apiVersion: v1 kind: ConfigMap metadata: name: coredns namespace: kube-system labels: addonmanager.kubernetes.io/mode: EnsureExists data: Corefile: | .:53 { errors log stdout health kubernetes cluster.local 172.21.0.0/16 prometheus proxy . /etc/resolv.conf cache 30 } --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: coredns namespace: kube-system labels: k8s-app: coredns kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile kubernetes.io/name: "CoreDNS" spec: replicas: 1 selector: matchLabels: k8s-app: coredns template: metadata: labels: k8s-app: coredns spec: serviceAccountName: coredns tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule - key: "CriticalAddonsOnly" operator: "Exists" containers: - name: coredns image: k8s-registry.local/public/coredns:0.9.10 imagePullPolicy: IfNotPresent resources: limits: memory: 170Mi requests: cpu: 100m memory: 70Mi args: [ "-conf", "/etc/coredns/Corefile" ] volumeMounts: - name: config-volume mountPath: /etc/coredns ports: - containerPort: 53 name: dns protocol: UDP - containerPort: 53 name: dns-tcp protocol: TCP - containerPort: 9153 name: metrics protocol: TCP livenessProbe: httpGet: path: /health port: 8080 scheme: HTTP initialDelaySeconds: 60 timeoutSeconds: 5 successThreshold: 1 failureThreshold: 5 dnsPolicy: Default volumes: - name: config-volume configMap: name: coredns items: - key: Corefile path: Corefile --- apiVersion: v1 kind: Service metadata: name: coredns namespace: kube-system labels: k8s-app: coredns kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile kubernetes.io/name: "CoreDNS" spec: selector: k8s-app: coredns clusterIP: 172.21.0.2 ports: - name: dns port: 53 protocol: UDP - name: dns-tcp port: 53 protocol: TCP - name: metrics port: 9153 protocol: TCP ---------- kubectl create -f coredns.yaml本文转自kubernetes中文社区- Kubernetes1.9 二进制版集群+ipvs+coredns
