Kubernetes二进制部署
部署列表
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| 1、部署Etcd数据库集群 2、在Node节点安装Docker 3、部署Flannel网络插件 4、在Master节点部署组件(api-server,schduler,controller-manager) 5、在Node节点部署组件(kubelet,kube-proxy) 6、查看集群状态 7、运行一个测试示例 8、完成
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准备环境
修改主机名称
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| hostnamectl set-hostname k8s-master
hostnamectl set-hostname k8s-node1
hostnamectl set-hostname k8s-node2
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查看并重启主机名是否修改成功
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| systemctl restart systemd-hostnamed
hostname
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三台机器,所有机器相互做解析 关闭防火墙和selinux
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| vim /etc/hosts
192.168.118.10 k8s-master 192.168.118.11 k8s-node1 192.168.118.12 k8s-node2
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(注:机器的ip设置为静态ip)
关闭防火墙和slinux
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| systemctl stop firewalld systemctl disable firewalld setenforce 0 sed -i's/SELINUX=enforcing/SELINUX=disabled/' /etc/sysconfig/selinux
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部署etcd集群
使用cfssl来生成自签证书,任何机器都行,证书这块儿知道怎么生成、怎么用即可,暂且不用过多研究(这个证书随便在那台机器生成都可以。哪里用将证书拷贝到哪里就可以了。)
这里我是用的master节点去生成的,用以下命令
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| wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
chmod +x cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64
mv cfssl_linux-amd64 /usr/local/bin/cfssl
mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
mv cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo
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生成Etcd证书
先创建以下三个文件
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| mkdir cert
cd cert/
vim ca-config.json #生成ca中心的
{ "signing": { "default": { "expiry": "87600h" }, "profiles": { "www": { "expiry": "87600h", "usages": [ "signing", "key encipherment", "server auth", "client auth" ] } } } }
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| vim ca-csr.json #生成ca中心的证书请求文件
{ "CN": "etcd CA", "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "L": "Beijing", "ST": "Beijing" } ] }
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
| vim server-csr.json #生成服务器的证书请求文件(三个ip分别为不同节点的ip)
{ "CN": "etcd", "hosts": [ "192.168.118.10", "192.168.118.11", "192.168.118.12" ], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "L": "BeiJing", "ST": "BeiJing" } ] }
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生成证书
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| cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server
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查看是否有以下证书
安装etcd
1
| 二进制包下载地址:https://github.com/coreos/etcd/releases/tag/v3.2.12 (根据所需的版本进行下载)
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以下部署步骤在规划的三个etcd节点操作一样,唯一不同的是etcd配置文件中的服务器IP要写当前的(以下步骤三台机器都操作)
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| wget https://github.com/etcd-io/etcd/releases/download/v3.2.12/etcd-v3.2.12-linux-amd64.tar.gz
mkdir /opt/etcd/{bin,cfg,ssl} -p
tar zxvf etcd-v3.2.12-linux-amd64.tar.gz
mv etcd-v3.2.12-linux-amd64/{etcd,etcdctl} /opt/etcd/bin/
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创建etcd配置文件(后面注释删除并且不能有空格)
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| vim /opt/etcd/cfg/etcd
ETCD_NAME="etcd01" ETCD_DATA_DIR="/var/lib/etcd/default.etcd" ETCD_LISTEN_PEER_URLS="https://192.168.118.10:2380" ETCD_LISTEN_CLIENT_URLS="https://192.168.118.10:2379"
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.118.10:2380" ETCD_ADVERTISE_CLIENT_URLS="https://192.168.118.10:2379" ETCD_INITIAL_CLUSTER="etcd01=https://192.168.118.10:2380,etcd02=https://192.168.118.11:2380,etcd03=https://192.168.118.12:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_INITIAL_CLUSTER_STATE="new"
参数解释: * ETCD_NAME 节点名称,每个节点名称不一样 * ETCD_DATA_DIR 存储数据目录(他是一个数据库,不是存在内存的,存在硬盘中的,所有和k8s有关的信息都会存到etcd里面的) * ETCD_LISTEN_PEER_URLS 集群通信监听地址 * ETCD_LISTEN_CLIENT_URLS 客户端访问监听地址 * ETCD_INITIAL_ADVERTISE_PEER_URLS 集群通告地址 * ETCD_ADVERTISE_CLIENT_URLS 客户端通告地址 * ETCD_INITIAL_CLUSTER 集群节点地址 * ETCD_INITIAL_CLUSTER_TOKEN 集群Token * ETCD_INITIAL_CLUSTER_STATE 加入集群的当前状态,new是新集群,existing表示加入已有集群
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** 剩下俩个机器一样的操作只需修改节点名称和ip**
配置etcd的启动文件
(三个节点都要配置)
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| vim /usr/lib/systemd/system/etcd.service
[Unit] Description=Etcd Server After=network.target After=network-online.target Wants=network-online.target
[Service] Type=notify EnvironmentFile=/opt/etcd/cfg/etcd ExecStart=/opt/etcd/bin/etcd \ --name=${ETCD_NAME} \ --data-dir=${ETCD_DATA_DIR} \ --listen-peer-urls=${ETCD_LISTEN_PEER_URLS} \ --listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \ --advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} \ --initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} \ --initial-cluster=${ETCD_INITIAL_CLUSTER} \ --initial-cluster-token=${ETCD_INITIAL_CLUSTER_TOKEN} \ --initial-cluster-state=new \ --cert-file=/opt/etcd/ssl/server.pem \ --key-file=/opt/etcd/ssl/server-key.pem \ --peer-cert-file=/opt/etcd/ssl/server.pem \ --peer-key-file=/opt/etcd/ssl/server-key.pem \ --trusted-ca-file=/opt/etcd/ssl/ca.pem \ --peer-trusted-ca-file=/opt/etcd/ssl/ca.pem Restart=on-failure LimitNOFILE=65536
[Install] WantedBy=multi-user.target
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再把刚才生成的证书拷贝到配置文件中的位置:(将master上面生成的证书scp到剩余两台机器上面)
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| cp ca*pem server*pem /opt/etcd/ssl
再用scp方式将证书拷贝至另外两个节点 scp ca*pem server*pem k8s-node1:/opt/etcd/ssl scp ca*pem server*pem k8s-node2:/opt/etcd/ssl
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全部启动并设置开启启动
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| systemctl daemon-reload
systemctl start etcd(三台要一起启动etcd)
systemctl enable etcd
systemctl status etcd
启动完成后检查启动的状态是否正常,如果不正常去看看前面的配置是有空格还是ip修改错误了。
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检查etcd集群状态
在master节点查看
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| /opt/etcd/bin/etcdctl --ca-file=/opt/etcd/ssl/ca.pem --cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem --endpoints="https://192.168.118.10:2379,https://192.168.118.11:2379,https://192.168.118.12:2379" cluster-health
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如果输出以下则说明etcd集群正常
在node节点安装docker
只需在node节点配置
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| cd /etc/yum.repos.d/
wget http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum -y install docker-ce
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部署Flannel网络插件
flannel作用
Flannel要用etcd存储自身一个子网信息,所以要保证能成功连接Etcd,写入预定义子网段: 在node节点部署,如果没有在master部署应用,那就不要在master部署flannel,他是用来给所有的容器用来通信的。
安装flannel
在master节点执行以下(记得修改ip)
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| cd cret/
再执行以下 /opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.118.10:2379,https://192.168.118.11:2379,https://192.168.118.12:2379" set /coreos.com/network/config '{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}'
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以下部署步骤只在node节点进行操作
下载二进制包
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| wget https://github.com/coreos/flannel/releases/download/v0.10.0/flannel-v0.10.0-linux-amd64.tar.gz
tar zxvf flannel-v0.10.0-linux-amd64.tar.gz
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解压后会生成两个启动命令和脚本
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| 创建启动命令的目录
mkdir -pv /opt/kubernetes/bin
mv flanneld mk-docker-opts.sh /opt/kubernetes/bin
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配置Flannel
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| mkdir -p /opt/kubernetes/cfg/
vim /opt/kubernetes/cfg/flanneld (ip需要修改为每个节点的ip)
FLANNEL_OPTIONS="--etcd-endpoints=https://192.168.118.10:2379,https://192.168.118.11:2379,https://192.168.118.12:2379 -etcd-cafile=/opt/etcd/ssl/ca.pem -etcd-certfile=/opt/etcd/ssl/server.pem -etcd-keyfile=/opt/etcd/ssl/server-key.pem"
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配置flannel启动文件
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| vim /usr/lib/systemd/system/flanneld.service
[Unit] Description=Flanneld overlay address etcd agent After=network-online.target network.target Before=docker.service
[Service] Type=notify EnvironmentFile=/opt/kubernetes/cfg/flanneld ExecStart=/opt/kubernetes/bin/flanneld --ip-masq $FLANNEL_OPTIONS ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env Restart=on-failure
[Install] WantedBy=multi-user.target
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配置docker启动文件
将原有的docker启动文件内容删除更换以下
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| vim /usr/lib/systemd/system/docker.service
[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target
[Service] Type=notify EnvironmentFile=/run/flannel/subnet.env ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s
[Install] WantedBy=multi-user.target
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重启flannel和docker
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| systemctl daemon-reload
systemctl start flanneld
systemctl enable flanneld docker
systemctl restart docker
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检查flannel是否生效
1、查看docker0与flannel.1在同一网段
2、测试不同节点互通,在当前节点访问另一个node节点docker0 IP
这里ping的是另一个node节点上docker0的ip
在master节点部署组件
在部署Kubernetes之前一定要确保etcd、flannel、docker是正常工作的,否则先解决问题再继续。
生成证书
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| master节点操作--给api-server创建的证书
mkdir -p /opt/crt/
cd /opt/crt/
vim ca-config.json
{ "signing": { "default": { "expiry": "87600h" }, "profiles": { "kubernetes": { "expiry": "87600h", "usages": [ "signing", "key encipherment", "server auth", "client auth" ] } } } }
vim ca-csr.json
{ "CN": "kubernetes", "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "L": "Beijing", "ST": "Beijing", "O": "k8s", "OU": "System" } ] }
运行一下 cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
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生成apiserver证书
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| vim server-csr.json { "CN": "kubernetes", "hosts": [ "10.0.0.1", "127.0.0.1", "192.168.118.10", "192.168.118.11", "192.168.118.12", "kubernetes", "kubernetes.default", "kubernetes.default.svc", "kubernetes.default.svc.cluster", "kubernetes.default.svc.cluster.local" ], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "L": "BeiJing", "ST": "BeiJing", "O": "k8s", "OU": "System" } ] }
运行命令 cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server
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生成kube-proxy证书
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| vim kube-proxy-csr.json
{ "CN": "system:kube-proxy", "hosts": [], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "L": "BeiJing", "ST": "BeiJing", "O": "k8s", "OU": "System" } ] }
运行命令 cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy
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最终生成以下证书文件
部署apiserver组件
以下在master节点进行
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| 下载这个包到root下
wget https://dl.k8s.io/v1.11.10/kubernetes-server-linux-amd64.tar.gz
创建所需目录下的文件 mkdir /opt/kubernetes/{bin,cfg,ssl} -pv
解压下载的包 tar zxvf kubernetes-server-linux-amd64.tar.gz
切换到解压包后的启动文件目录下 cd kubernetes/server/bin
将需要启动文件拷贝到指定目录 cp kube-apiserver kube-scheduler kube-controller-manager kubectl /opt/kubernetes/bin
再切换到生成证书的目录下 cd /opt/crt/
将所需的证书文件拷贝到指定目录 cp server.pem server-key.pem ca.pem ca-key.pem /opt/kubernetes/ssl/
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创建token文件
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| cd /opt/kubernetes/cfg/
vim token.csv
674c457d4dcf2eefe4920d7dbb6b0ddc,kubelet-bootstrap,10001,"system:kubelet-bootstrap"
第一列:随机字符串,自己可生成 第二列:用户名 第三列:UID 第四列:用户组
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创建apiserver配置文件
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| -
-- -- ---...,...,... ---...- --- ---... --- -----... ----,,,, ---, ----- ----. ------ ----. ------. ----. ------. ---. ---. ----.
-- -- --- --- --- --- --- ----- ---- --- ----- ---- -----
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创建kube-apiserver启动文件
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| cd /usr/lib/systemd/system
vim kube-apiserver.service
[Unit] Description=Kubernetes API Server Documentation=https://github.com/kubernetes/kubernetes
[Service] EnvironmentFile=-/opt/kubernetes/cfg/kube-apiserver ExecStart=/opt/kubernetes/bin/kube-apiserver $KUBE_APISERVER_OPTS Restart=on-failure
[Install] WantedBy=multi-user.target
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启动kube-apiserver
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| systemctl daemon-reload
systemctl enable kube-apiserver
systemctl start kube-apiserver
systemctl status kube-apiserver
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部署schduler组件
创建schduler配置文件
创建kube-schduler启动文件
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| cd /usr/lib/systemd/system/
vim kube-scheduler.service
[Unit] Description=Kubernetes Scheduler Documentation=https://github.com/kubernetes/kubernetes
[Service] EnvironmentFile=/opt/kubernetes/cfg/kube-scheduler ExecStart=/opt/kubernetes/bin/kube-scheduler $KUBE_SCHEDULER_OPTS Restart=on-failure
[Install] WantedBy=multi-user.target
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启动kube-schduler
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| systemctl daemon-reload
systemctl enable kube-scheduler
systemctl start kube-scheduler
systemctl status kube-scheduler
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部署controller-manager组件
创建controller-manager配置文件
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| cd /opt/kubernetes/cfg/
vim kube-controller-manager
KUBE_CONTROLLER_MANAGER_OPTS= --v=4 \ --master=127.0.0.1:8080 \ --leader-elect=true \ --address=127.0.0.1 \ --service-cluster-ip-range=10.0.0.0/24 \ //这是后面dns要使用的虚拟网络,不用改,就用这个 切忌 --cluster-name=kubernetes \ --cluster-signing-cert-file=/opt/kubernetes/ssl/ca.pem \ --cluster-signing-key-file=/opt/kubernetes/ssl/ca-key.pem \ --root-ca-file=/opt/kubernetes/ssl/ca.pem \ --service-account-private-key-file=/opt/kubernetes/ssl/ca-key.pem
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创建kube-controller-manager启动文件
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| cd /usr/lib/systemd/system/
vim kube-controller-manager.service
[Unit] Description=Kubernetes Controller Manager Documentation=https://github.com/kubernetes/kubernetes
[Service] EnvironmentFile=-/opt/kubernetes/cfg/kube-controller-manager ExecStart=/opt/kubernetes/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS Restart=on-failure
[Install] WantedBy=multi-user.target
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启动kube-controller-manager
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| systemctl daemon-reload
systemctl enable kube-controller-manager
systemctl start kube-controller-manager
systemctl status kube-controller-manager.service
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检查集群状态
所有组件都已经启动成功,通过kubectl工具查看当前集群组件状态
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| /opt/kubernetes/bin/kubectl get cs
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如上输出说明所有组件都正常
将kubelet-bootstrap用户绑定到系统集群角色
给启动命令制作软连接(master节点操作)
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| ln -s /opt/kubernetes/bin/kubectl /usr/bin/kubectl
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1 2 3 4
| 没有做软连接 /opt/kubernetes/bin/kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap 做软连接 kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
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回显如下(也可用echo进行输出验证是否有错)
创建kubeconfig文件
在生成kubernetes证书的目录下执行以下命令生成kubeconfig文件
指定apiserver内网负载均衡地址
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| KUBE_APISERVER="https://192.168.118.10:6443"
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进行验证是否配置成功
查看token值
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| token值在我们创建的token文件中
cat /opt/kubernetes/cfg/token.csv
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设置token值变量
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| BOOTSTRAP_TOKEN=674c457d4dcf2eefe4920d7dbb6b0ddc
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进行验证是否配置成功
设置集群参数
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| /opt/kubernetes/bin/kubectl config set-cluster kubernetes \ --certificate-authority=ca.pem \ --embed-certs=true \ --server=${KUBE_APISERVER} \ --kubeconfig=bootstrap.kubeconfig
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设置客户端认证参数
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| /opt/kubernetes/bin/kubectl config set-credentials kubelet-bootstrap \ --token=${BOOTSTRAP_TOKEN} \ --kubeconfig=bootstrap.kubeconfig
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设置上下文参数
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| /opt/kubernetes/bin/kubectl config set-context default \ --cluster=kubernetes \ --user=kubelet-bootstrap \ --kubeconfig=bootstrap.kubeconfig
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设置默认上下文
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| /opt/kubernetes/bin/kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
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创建kube-proxy kubeconfig文件
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| /opt/kubernetes/bin/kubectl config set-cluster kubernetes \ --certificate-authority=ca.pem \ --embed-certs=true \ --server=${KUBE_APISERVER} \ --kubeconfig=kube-proxy.kubeconfig
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设置证书、私钥
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| /opt/kubernetes/bin/kubectl config set-credentials kube-proxy \ --client-certificate=kube-proxy.pem \ --client-key=kube-proxy-key.pem \ --embed-certs=true \ --kubeconfig=kube-proxy.kubeconfig
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设置集群、用户
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| /opt/kubernetes/bin/kubectl config set-context default \ --cluster=kubernetes \ --user=kube-proxy \ --kubeconfig=kube-proxy.kubeconfig
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设置上下文
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| /opt/kubernetes/bin/kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig
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查看创建的俩个文件
将这两个文件拷贝到Node节点/opt/kubernetes/cfg目录下
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| scp *.kubeconfig k8s-node1:/opt/kubernetes/cfg/
scp *.kubeconfig k8s-node2:/opt/kubernetes/cfg/
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检查是否已拷贝
在node节点部署组件
部署kubelet组件
拷贝启动命令到node节点
将master上面解压出来的启动命令cp到俩个node节点
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| cd kubernetes/server/bin/
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| scp kubelet kube-proxy k8s-node1:/opt/kubernetes/bin/
scp kubelet kube-proxy k8s-node2:/opt/kubernetes/bin/
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查看是否已cp到node节点
在两个node节点创建kubelet配置文件
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-- -- ---... --. ---. --. --- -----.-..--.
--- -- ---. --- -----
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| scp /opt/kubernetes/cfg/kubelet k8s-node2:/opt/kubernetes/cfg/kubelet (将这个配置发给node2节点,注意修改ip)
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提前拉取镜像
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| docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0 俩个node节点都需要执行
|
在两个node节点创建kubelet.config配置文件
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| vim /opt/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration apiVersion: kubelet.config.k8s.io/v1beta1 address: 192.168.118.11 #写你机器的ip地址 port: 10250 readOnlyPort: 10255 cgroupDriver: cgroupfs clusterDNS: ["10.0.0.2"] #不要改,就是这个ip地址 clusterDomain: cluster.local. failSwapOn: false authentication: anonymous: enabled: true webhook: enabled: false
|
1 2
| scp/opt/kubernetes/cfg/kubelet.config k8s-node2:/opt/kubernetes/cfg/kubelet.config (将这个配置文件发给node2节点,注意修改ip)
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拷贝两个节点证书
在两个node节点创建证书存放目录
1
| mkdir -p /opt/kubernetes/ssl
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再在master节点,将这几个证书拷贝到两个node节点去
拷贝到node节点
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| scp ca*pem server*pem kube-proxy*pem k8s-node1:/opt/kubernetes/ssl/
scp ca*pem server*pem kube-proxy*pem k8s-node2:/opt/kubernetes/ssl/
|
检查是否拷贝完成
创建kubelet启动文件
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| vim /usr/lib/systemd/system/kubelet.service
[Unit] Description=Kubernetes Kubelet After=docker.service Requires=docker.service
[Service] EnvironmentFile=/opt/kubernetes/cfg/kubelet ExecStart=/opt/kubernetes/bin/kubelet $KUBELET_OPTS Restart=on-failure KillMode=process
[Install] WantedBy=multi-user.target
|
1 2
| scp /usr/lib/systemd/system/kubelet.service k8s-node2:/usr/lib/systemd/system/kubelet.service 拷贝至node2节点
|
启动kubelet
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| systemctl daemon-reload
systemctl enable kubelet
systemctl start kubelet
|
在启动后会去访问master节点的apiserver,用以下命令在master节点查看是否接收到两个node节点的请求
上图可看到已收到node两个节点的请求
在Master审批Node加入集群
启动后还没加入到集群中,需要手动允许该节点才可以。在Master节点查看请求签名的Node
可以看到后面的状态为等待审批node节点请求”Pending”
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| 注意:xxxid 指的是上面的NAME这一列
kubectl certificate approve xxxid
kubectl certificate approve xxxid
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可以看到状态为审批通过”Approved,Issued”
查看集群节点信息
可以看到两个node节点已成功加入集群
部署kube-proxy组件
配置kube-proxy配置文件
在两个node节点部署
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| vim /opt/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS= --v=4 \ --hostname-override=192.168.118.11 \ #写每个node节点ip --cluster-cidr=10.0.0.0/24 \ //不要改,就是这个ip --kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig
|
1 2
| scp /opt/kubernetes/cfg/kube-proxy k8s-node2:/opt/kubernetes/cfg/kube-proxy (注意:修改ip)
|
创建kube-proxy启动文件
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| vim /usr/lib/systemd/system/kube-proxy.service
[Unit] Description=Kubernetes Proxy After=network.target
[Service] EnvironmentFile=-/opt/kubernetes/cfg/kube-proxy ExecStart=/opt/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS Restart=on-failure
[Install] WantedBy=multi-user.target
|
1
| scp /usr/lib/systemd/system/kube-proxy.service k8s-node2:/usr/lib/systemd/system/kube-proxy.service
|
启动kube-proxy
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| systemctl daemon-reload
systemctl enable kube-proxy
systemctl start kube-proxy
|
在master查看集群状态
到这一步如果没有什么问题k8s二进制方式就完成了!
以下是页面的部署,感兴趣可以搭建一下
部署Daschboard (Web UI)
配置需求
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| dashboard-deployment.yaml #部署Pod,提供Web服务
dashboard-rbac.yaml #授权访问apiserver获取信息
dashboard-service.yaml #发布服务,提供对外访问
|
创建目录
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| mkdir webui (master节点配置)
cd webui
|
创建yaml文件
创建dashboard-deployment.yaml
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| vim dashboard-deployment.yaml
apiVersion: apps/v1beta2 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: registry.cn-hangzhou.aliyuncs.com/kube_containers/kubernetes-dashboard-amd64:v1.8.1 resources: limits: cpu: 100m memory: 300Mi requests: cpu: 100m memory: 100Mi ports: - containerPort: 9090 protocol: TCP livenessProbe: httpGet: scheme: HTTP path: / port: 9090 initialDelaySeconds: 30 timeoutSeconds: 30 tolerations: - key: "CriticalAddonsOnly" operator: "Exists"
|
创建dashboard-rbac.yaml
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| vim dashboard-rbac.yaml
apiVersion: v1 kind: ServiceAccount metadata: labels: k8s-app: kubernetes-dashboard addonmanager.kubernetes.io/mode: Reconcile name: kubernetes-dashboard namespace: kube-system ---
kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1beta1 metadata: name: kubernetes-dashboard-minimal namespace: kube-system labels: k8s-app: kubernetes-dashboard addonmanager.kubernetes.io/mode: Reconcile roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kube-system
|
创建dashboard-service.yaml
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| vim dashboard-service.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: type: NodePort selector: k8s-app: kubernetes-dashboard ports: - port: 80 targetPort: 9090
|
引用这些yaml文件
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| kubectl create -f dashboard-rbac.yaml
kubectl create -f dashboard-deployment.yaml
kubectl create -f dashboard-service.yaml
|
查看命名空间
1
| kubectl get all -n kube-system
|
查看指定命名空间的服务
1
| kubectl get svc -n kube-system
|
访问node节点的ip+端口(两个node节点都可以进行访问)
测试
测试页面k8s及k8s页面是否可正常使用
运行一个测试示例–在master节点先安装docker服务 创建一个Nginx Web,判断集群是否正常
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| kubectl run nginx --image=daocloud.io/nginx --replicas=3
kubectl expose deployment nginx --port=88 --target-port=80 --type=NodePort
|
在master节点查看pod,service
查看pod详细信息
1
| kubectl describe pod nginx-6648ff9bb4-459wb
|
查看创建的service
访问nodeip+上图的端口,是否可以正常访问到nginx默认页面
再次访问webui的页面
可以看到我们刚刚测试的时候创建的nginx