二进制部署

HOST
HostnameIP地址flannedAPP
master192.169.116.10ETCD\APIserver\Scheduler\Controller-Manager
node1192.168.116.11172.17.28.0ETCD,Flanned,Kubelet,kube-proxy
node2192.168.116.12172.17.26.0ETCD,Flanned,Kubelet,kube-proxy


 

Kubernetes社区

Kubernetes文档

ETCD 

                                                master节点

制作证书

1、下载证书工具

[root@master ~]# wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 --no-check-certificate
[root@master ~]# wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 --no-check-certificate
[root@master ~]# wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 --no-check-certificate
[root@master ~]# chmod +x cfssl*
[root@master ~]# ls
anaconda-ks.cfg             cfssljson_linux-amd64
cfssl-certinfo_linux-amd64  cfssl_linux-amd64
[root@master ~]# mv cfssl_linux-amd64 /usr/local/bin/cfssl
[root@master ~]# mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
[root@master ~]# mv cfssl-certinfo_linux-amd64  /usr/local/bin/cfssl-certinfo

 2、证书配置文件

[root@master ~]# mkdir -p /opt/kubernetes/etcd/{bin,cfg,ssl,data}

[root@master ~]# tree /opt/kubernetes/etcd/
/opt/kubernetes/etcd/
├── bin
├── cfg
├── data
└── ssl

[root@master ~]# cd /opt/kubernetes/etcd/ssl/
[root@master ssl]# cat >ca-config.json<<EOF
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "www": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}
EOF

[root@master ssl]# cat >ca-csr.json<<EOF
{
    "CN": "etcd CA",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Beijing",
            "ST": "Beijing"
        }
    ]
}
EOF

[root@master ssl]# cat >server-csr.json<<EOF 
{
    "CN": "etcd",
    "hosts": [
    "192.168.116.10",
    "192.168.116.11",
    "192.168.116.12"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "BeiJing",
            "ST": "BeiJing"
        }
    ]
}
EOF

3、制作证书

[root@master ssl]# cfssl gencert -initca ca-csr.json | cfssljson -bare ca -

[root@master ssl]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server

[root@master ssl]# ls
ca-config.json  ca-csr.json  ca.pem      server-csr.json  server.pem
ca.csr          ca-key.pem   server.csr  server-key.pem
安装ETCD 

1、下载ETCD

[root@master ssl]# cd ~
[root@master ~]# wget https://github.com/etcd-io/etcd/releases/download/v3.5.0/etcd-v3.5.0-linux-amd64.tar.gz
[root@master ~]# tar zxvf etcd-v3.5.0-linux-amd64.tar.gz 
[root@master ~]# cp etcd-v3.5.0-linux-amd64/{etcd,etcdctl,etcdutl} /opt/kubernetes/etcd/bin/

2、ETCD配置文件

[root@master ssl]# cat >/opt/kubernetes/etcd/cfg/etcd.conf<<EOF
#[Member]
ETCD_NAME="etcd-1"                                            <<----对应主机编号
ETCD_DATA_DIR="/opt/kubernetes/etcd/data/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.116.10:2380"            <<---对应主机IP
ETCD_LISTEN_CLIENT_URLS="https://192.168.116.10:2379"            <<---对应主机IP

#[Clustering]
ETCD_ENABLE_V2="true"                                                   <<----flanneld不支持V3版本，需要手动开启V2
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.116.10:2380"            <<---对应主机IP
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.116.10:2379"            <<---对应主机IP
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.116.10:2380,etcd-2=https://192.168.116.11:2380,etcd-3=https://192.168.116.12:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF

2、ETCD服务文件

[root@master ssl]# cat >/usr/lib/systemd/system/etcd.service<<EOF
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
EnvironmentFile=/opt/kubernetes/etcd/cfg/etcd.conf
ExecStart=/opt/kubernetes/etcd/bin/etcd \
--cert-file=/opt/kubernetes/etcd/ssl/server.pem \
--key-file=/opt/kubernetes/etcd/ssl/server-key.pem \
--peer-cert-file=/opt/kubernetes/etcd/ssl/server.pem \
--peer-key-file=/opt/kubernetes/etcd/ssl/server-key.pem \
--trusted-ca-file=/opt/kubernetes/etcd/ssl/ca.pem \
--peer-trusted-ca-file=/opt/kubernetes/etcd/ssl/ca.pem \
--logger=zap
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

 3、发送证书、配置、运行文件

[root@master ~]# scp -r /opt/kubernetes/ node1:/opt/            <<-----拷贝到node1，并修改对应名字、IP地址
[root@master ~]# scp -r /opt/kubernetes/ node2:/opt/            <<-----拷贝到node2，并修改对应名字、IP地址
[root@master ~]# scp /usr/lib/systemd/system/etcd.service node1:/usr/lib/systemd/system/system/
[root@master ~]# scp /usr/lib/systemd/system/etcd.service node2:/usr/lib/systemd/system/system/
 运行ETCD
[root@master ~]# systemctl daemon-reload
[root@master ~]# systemctl start etcd
[root@master ~]# systemctl enable etcd


检查运行状态
[root@master ~]# ETCDCTL_API=2 /opt/kubernetes/etcd/bin/etcdctl --ca-file=/opt/kubernetes/etcd/ssl/ca.pem --cert-file=/opt/kubernetes/etcd/ssl/server.pem --key-file=/opt/kubernetes/etcd/ssl/server-key.pem --endpoints="https://192.168.116.10:2379,https://192.168.116.11:2379,https://192.168.116.12:2379" cluster-health
member 6c4bda8e201a71cf is healthy: got healthy result from https://192.168.116.12:2379
member 858c9c1ef126a0f4 is healthy: got healthy result from https://192.168.116.10:2379
member d72dcdd720e88b38 is healthy: got healthy result from https://192.168.116.11:2379
cluster is healthy

                                                node节点

修改文件

核实证书

[root@node1 ~]# ls /opt/kubernetes/etcd/ssl/
ca-config.json  ca.csr  ca-csr.json  ca-key.pem  ca.pem  server.csr  server-csr.json  server-key.pem  server.pem

修改ETCD配置文件

[root@node1 ~]# vim /opt/kubernetes/etcd/cfg/etcd.conf 
#[Member]
ETCD_NAME="etcd-2"                            <<------对应节点名字
ETCD_DATA_DIR="/opt/kubernetes/etcd/data/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.116.11:2380"            <<-----对应IP地址
ETCD_LISTEN_CLIENT_URLS="https://192.168.116.11:2379"            <<-----对应IP地址

#[Clustering]
ETCD_ENABLE_V2="true"
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.116.11:2380"            <<-----对应IP地址
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.116.11:2379"            <<-----对应IP地址
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.116.10:2380,etcd-2=https://192.168.116.11:2380,etcd-3=https://192.168.116.12:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
运行ETCD
[root@master ~]# systemctl daemon-reload
[root@master ~]# systemctl start etcd
[root@master ~]# systemctl enable etcd

Flanneld

因为Centos默认是禁止网卡之间数据包转发，所以需要打开

echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf

systemctl restart network

flannel.1 DOWN or UNKNOWN的解决方法

设置数据包转发方法

                                                master节点

配置通讯子网

[root@master ~]# cd /opt/kubernetes/etcd/ssl/
[root@master ssl]# ETCDCTL_API=2 /opt/kubernetes/etcd/bin/etcdctl  --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.116.10:2379,https://192.168.116.11:2379,https://192.168.116.12:2379" set /coreos.com/network/config '{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}'

etcd 报错 Error: unknown command “set“ for “etcdctl“

                                                node节点

安装Flanneld

1、安装

[root@node1 ~]# yum -y install docker-ce
[root@node1 ~]# wget https://github.com/flannel-io/flannel/releases/download/v0.10.0/flannel-v0.10.0-linux-amd64.tar.gz
[root@node1 ~]# tar zxvf flannel-v0.10.0-linux-amd64.tar.gz 
[root@node1 ~]# mkdir -p /opt/kubernetes/flanneld/{bin,cfg}
[root@node1 ~]# cp flanneld mk-docker-opts.sh /opt/kubernetes/flanneld/bin/

2、Flanneld配置文件

[root@node1 ~]# vim /opt/kubernetes/flanneld/cfg/flanneld
FLANNEL_OPTIONS="--etcd-endpoints=https://192.168.116.10:2379,https://192.168.116.11:2379,https://192.168.116.12:2379 \
-etcd-cafile=/opt/kubernetes/etcd/ssl/ca.pem \
-etcd-certfile=/opt/kubernetes/etcd/ssl/server.pem \
-etcd-keyfile=/opt/kubernetes/etcd/ssl/server-key.pem"

3、Flanneld服务文件

[root@node1 ~]# vim /usr/lib/systemd/system/flanneld.service
[Unit]
Description=Flanneld overlay address etcd agent
After=network.target network-online.target
Before=docker.service

[Service]
Type=notify
EnvironmentFile=/opt/kubernetes/flanneld/cfg/flanneld
ExecStart=/opt/kubernetes/flanneld/bin/flanneld --ip-masq $FLANNEL_OPTIONS
ExecStartPost=/opt/kubernetes/flanneld/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env
Restart=on-failure

[Install]
WantedBy=multi-user.target

[root@node1 ~]# 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

4、修改docker服务文件

[root@node1 ~]# 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
 运行Flanneld
[root@node1 ~]# systemctl daemon-reload
[root@node1 ~]# systemctl start flanneld
[root@node1 ~]# systemctl enable flanneld

APIServer

                                                master节点

制作证书

证书配置文件

[root@master ~]# mkdir -p /opt/kubernetes/{bin,cfg,ssl}
[root@master ~]# cd /opt/kubernetes/ssl/
[root@master ssl]# vim ca-config.json 
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "kubernetes": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}

[root@master ssl]# vim ca-csr.json 
{
    "CN": "kubernetes",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Beijing",
            "ST": "Beijing",
            "O": "k8s",
            "OU": "System"
        }
    ]
}

[root@master ssl]#cfssl gencert -initca ca-csr.json | cfssljson -bare ca -

[root@master ssl]# vim server-csr.json 
{
    "CN": "kubernetes",
    "hosts": [
      "10.0.0.1",
      "127.0.0.1",
      "192.168.116.10",
      "192.168.116.11",
      "192.168.116.12",
      "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"
        }
    ]
}

[root@k8s-master ssl]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server
安装APIServer 

1、下载

[root@master ~]# wget https://dl.k8s.io/v1.11.10/kubernetes-server-linux-amd64.tar.gz
[root@master ~]# tar zxcf kubernetes-server-linux-amd64.tar.gz 
[root@master ~]# cd kubernetes/server/bin/
[root@master bin]# cp kube-apiserver kube-controller-manager kube-scheduler kubectl /opt/kubernetes/bin/

2、制作口令、配置文件

[root@master bin]# vim /opt/kubernetes/cfg/token.csv 
674c457d4dcf2eefe4920d7dbb6b0ddc,kubelet-bootstrap,10001,"system:kubelet-bootstrap"

[root@master bin]# vim /opt/kubernetes/cfg/kube-apiserver 
KUBE_APISERVER_OPTS="--logtostderr=true \
--v=4 \
--etcd-servers=https://192.168.116.10:2379,https://192.168.116.11:2379,https://192.168.116.12:2379 \
--bind-address=192.168.116.10 \
--secure-port=6443 \
--advertise-address=192.168.116.10 \
--allow-privileged=true \
--service-cluster-ip-range=10.0.0.0/24 \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction \
--authorization-mode=RBAC,Node \
--enable-bootstrap-token-auth \
--token-auth-file=/opt/kubernetes/cfg/token.csv \
--service-node-port-range=30000-50000 \
--tls-cert-file=/opt/kubernetes/ssl/server.pem  \
--tls-private-key-file=/opt/kubernetes/ssl/server-key.pem \
--client-ca-file=/opt/kubernetes/ssl/ca.pem \
--service-account-key-file=/opt/kubernetes/ssl/ca-key.pem \
--etcd-cafile=/opt/kubernetes/etcd/ssl/ca.pem \
--etcd-certfile=/opt//kubernetes/etcd/ssl/server.pem \
--etcd-keyfile=/opt/kubernetes/etcd/ssl/server-key.pem"

 3、APIServer服务文件

[root@master bin]# vim /usr/lib/systemd/system/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
运行APIServer 
[root@master bin]# systemctl daemon-reload
[root@master bin]# systemctl start kube-apiserver
[root@master bin]# systemctl enable kube-apiserver

Scheduler

                                                master节点

安装Scheduler

1、配置文件

[root@master ~]# vim /opt/kubernetes/cfg/kube-scheduler
KUBE_SCHEDULER_OPTS="--logtostderr=true \
--v=4 \
--master=127.0.0.1:8080 \
--leader-elect"

2、服务文件

[root@master ~]# vim /usr/lib/systemd/system/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
运行Scheduler 
[root@master ~]# systemctl daemon-reload
[root@master ~]# systemctl start kube-scheduler
[root@master ~]# systemctl enable kube-scheduler

Controller-Manager

                                                master节点 

 安装C-M

1、配置文件

[root@master ~]# vim /opt/kubernetes/cfg/kube-controller-manager
KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=true \
--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 \
--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"

2、服务文件

[root@master ~]# vim /usr/lib/systemd/system/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
运行C-M 
[root@master ~]# systemctl daemon-reload
[root@master ~]# systemctl start kube-controller-manager.service
[root@master ~]# systemctl enable kube-controller-manager.service



查看集群状态
[root@master ~]# /opt/kubernetes/bin/kubectl get cs
NAME                 STATUS    MESSAGE                         ERROR
scheduler            Healthy   ok                              
controller-manager   Healthy   ok                              
etcd-1               Healthy   {"health":"true","reason":""}   
etcd-2               Healthy   {"health":"true","reason":""}   
etcd-0               Healthy   {"health":"true","reason":""}

Kubelet

                                                master节点

制作Kubelet配置文件
kubelet-bootstrap：
[root@master ~]# cd ~
[root@master ~]# /opt/kubernetes/bin/kubectl create clusterrolebinding kubelet-bootstrap \--clusterrole=system:node-bootstrapper \--user=kubelet-bootstrap


kubeconfig：
[root@master ~]# cd /opt/kubernetes/ssl/
[root@master ssl]# KUBE_APISERVER="https://192.168.116.10:6443"
[root@master ssl]# BOOTSTRAP_TOKEN=674c457d4dcf2eefe4920d7dbb6b0ddc
[root@master ssl]# /opt/kubernetes/bin/kubectl config set-cluster kubernetes --certificate-authority=ca.pem --embed-certs=true --server=${KUBE_APISERVER} --kubeconfig=bootstrap.kubeconfig
[root@master ssl]# /opt/kubernetes/bin/kubectl config set-credentials kubelet-bootstrap --token=${BOOTSTRAP_TOKEN} --kubeconfig=bootstrap.kubeconfig
[root@master ssl]# /opt/kubernetes/bin/kubectl config set-context default --cluster=kubernetes --user=kubelet-bootstrap --kubeconfig=bootstrap.kubeconfig
[root@master ssl]# /opt/kubernetes/bin/kubectl config use-context default --kubeconfig=bootstrap.kubeconfig

                                                node节点

1、创建文件夹、下载镜像

[root@node1 ~]# mkdir -p /opt/kubernetes/{bin,cfg,ssl}
[root@node1 ~]# systemctl start docker
[root@node1 ~]# systemctl enable docker
[root@node1 ~]# docker pull registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0

2、从master发送认证、程序

[root@master ssl]# scp *kubeconfig node1:/opt/kubernetes/cfg/
[root@master ssl]# scp *kubeconfig node2:/opt/kubernetes/cfg/

[root@master ssl]# cd ~/kubernetes/server/bin/
[root@master bin]# scp kubelet kube-proxy node1:/opt/kubernetes/bin
[root@master bin]# scp kubelet kube-proxy node2:/opt/kubernetes/bin
安装kubelet

1、配置文件

[root@node1 ~] vim /opt/kubernetes/cfg/kubelet
KUBELET_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=192.168.116.11 \                <<------对应的node地址
--kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \
--config=/opt/kubernetes/cfg/kubelet.config \
--cert-dir=/opt/kubernetes/ssl \
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"                   <<-----pause镜像


[root@node1 ~]# vim /opt/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 192.168.116.11                <<------对应的node地址
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS: ["10.0.0.2"]
clusterDomain: cluster.local.
failSwapOn: false
authentication:
  anonymous:
    enabled: true
  webhook:
    enabled: false

2、服务文件

[root@node1 ~]# 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
运行kubelet
[root@node1 ~]# systemctl daemon-reload
[root@node1 ~]# systemctl start kubelet
[root@node1 ~]# systemctl enable kubelet


查看node状态
[root@master ~]# /opt/kubernetes/bin/kubectl get csr

允许node进入集群
[root@master ~]# /opt/kubernetes/bin/kubectl certificate approve node-csr-B56hrh1mbKUfm2OP94hzzsM-9iSTjQuZsR0lG5wcW1o

 k8s_kubelet启动时必须关闭swap

kube-proxy

                                        master节点

制作证书
[root@master ~]# vim /opt/kubernetes/ssl/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"
    }
  ]
}

[root@master ~]# cd /opt/kubernetes/ssl/
[root@master ssl]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy
制作kube-proxy配置文件
[root@master ssl]# /opt/kubernetes/bin/kubectl config set-cluster kubernetes \
--certificate-authority=ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-proxy.kubeconfig

[root@master ssl]#  /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

[root@master ssl]# /opt/kubernetes/bin/kubectl config set-context default \
--cluster=kubernetes \
--user=kube-proxy \
--kubeconfig=kube-proxy.kubeconfig

[root@master ssl]# /opt/kubernetes/bin/kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig

                                                node节点

从master发送认证

[root@master ssl]# scp kube-proxy.kubeconfig  node1:/opt/kubernetes/cfg/
[root@master ssl]# scp kube-proxy.kubeconfig  node2:/opt/kubernetes/cfg/
安装proxy 

1、配置文件

[root@node1 ~]# vim /opt/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=192.168.116.11 \
--cluster-cidr=10.0.0.0/24 \
--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig"

2、服务文件

[root@node1 ~]# 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
运行proxy
[root@node1 ~]# systemctl daemon-reload
[root@node1 ~]# systemctl enable kube-proxy
[root@node1 ~]# systemctl start kube-proxy


查看集群状态
[root@master1 ~]# /opt/kubernetes/bin/kubectl get no
NAME              STATUS    ROLES     AGE       VERSION
192.168.116.11   Ready     <none>    1m       v1.11.10
192.168.116.12   Ready     <none>    3m       v1.11.10

测试

                                        master节点

运行测试镜像
[root@master ssl]# /opt/kubernetes/bin/kubectl run nginx --image=daocloud.io/nginx --replicas=3

[root@master ssl]# /opt/kubernetes/bin/kubectl get pod
NAME                     READY     STATUS    RESTARTS   AGE
nginx-6648ff9bb4-jw4fb   1/1       Running   0          35s
nginx-6648ff9bb4-lqb42   1/1       Running   0          35s
nginx-6648ff9bb4-xnkqh   1/1       Running   0          35s

[root@master ssl]# /opt/kubernetes/bin/kubectl get deployment
NAME      DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
nginx     3         3         3            3           1m

[root@master ssl]# /opt/kubernetes/bin/kubectl get pod -o wide
NAME                     READY     STATUS    RESTARTS   AGE       IP            NODE             NOMINATED NODE
nginx-6648ff9bb4-jw4fb   1/1       Running   0          1m        172.17.26.3   192.168.116.12   <none>
nginx-6648ff9bb4-lqb42   1/1       Running   0          1m        172.17.26.2   192.168.116.12   <none>
nginx-6648ff9bb4-xnkqh   1/1       Running   0          1m        172.17.28.2   192.168.116.11   <none>
开放镜像端口 
[root@master ssl]# /opt/kubernetes/bin/kubectl expose deployment nginx --port=88 --target-port=80 --type=NodePort
service/nginx exposed

[root@master ssl]# /opt/kubernetes/bin/kubectl get service
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP   10.0.0.1     <none>        443/TCP        3d
nginx        NodePort    10.0.0.209   <none>        88:36909/TCP   10s

                                        node节点

测试flanned网络
[root@node1 ~]# ping 172.17.26.3 
PING 172.17.26.3 (172.17.26.3) 56(84) bytes of data.
64 bytes from 172.17.26.3: icmp_seq=1 ttl=63 time=0.397 ms
64 bytes from 172.17.26.3: icmp_seq=2 ttl=63 time=0.220 ms
^C
--- 172.17.26.3 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.220/0.308/0.397/0.090 ms

[root@node1 ~]# ping 172.17.26.2
PING 172.17.26.2 (172.17.26.2) 56(84) bytes of data.
64 bytes from 172.17.26.2: icmp_seq=1 ttl=63 time=0.319 ms
64 bytes from 172.17.26.2: icmp_seq=2 ttl=63 time=0.288 ms
^C
--- 172.17.26.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.288/0.303/0.319/0.023 ms

[root@node1 ~]# ping 172.17.28.2
PING 172.17.28.2 (172.17.28.2) 56(84) bytes of data.
64 bytes from 172.17.28.2: icmp_seq=1 ttl=64 time=0.090 ms
64 bytes from 172.17.28.2: icmp_seq=2 ttl=64 time=0.040 ms
^C
--- 172.17.28.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.040/0.065/0.090/0.025 ms

安装WEB-UI 

POD配置文件

[root@master ~]# mkdir /opt/kubernetes/webui
[root@master ~]# cd /opt/kubernetes/webui/
[root@master webui]# vim dashboard-deployment.yaml 
  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-


      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"

配置APIServer

[root@master webui]# 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

配置Dashboard

[root@master webui]# 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

部署

[root@master webui]# /opt/kubernetes/bin/kubectl create -f dashboard-rbac.yaml

[root@master webui]# /opt/kubernetes/bin/kubectl create -f dashboard-deployment.yaml

[root@master webui]# /opt/kubernetes/bin/kubectl create -f dashboard-service.yaml

[root@master webui]# /opt/kubernetes/bin/kubectl get pod -n kube-system
NAME                                   READY     STATUS    RESTARTS   AGE
kubernetes-dashboard-d9545b947-lcdrv   1/1       Running   0          3m


查看端口
[root@master webui]# /opt/kubernetes/bin/kubectl get service -n kube-system
NAME                   TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)        AGE
kubernetes-dashboard   NodePort   10.0.0.39    <none>        80:34354/TCP   4m


查看所在容器IP
[root@master webui]# /opt/kubernetes/bin/kubectl get pod -n kube-system -o wide
NAME                                   READY     STATUS    RESTARTS   AGE       IP            NODE             NOMINATED NODE
kubernetes-dashboard-d9545b947-lcdrv   1/1       Running   0          5m        172.17.28.3   192.168.116.11   <none>

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