centos linux7.5
cat > /etc/hosts << EOF 192.168.199.221 master 192.168.199.222 node1 192.168.199.223 node2 EOF
1、关闭防火墙、关闭selinux、关闭swapoff -a
systemctl stop firewalld
selinux=disabled
swapoff -a
2、安装docker
1)常用方法
a、配置yum源 阿里镜像源 yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo Docker官方镜像源 yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo b、安装docker 显示docker-ce所有可安装版本： yum list docker-ce --showduplicates | sort -r 安装指定docker版本 yum install docker-ce-18.06.1.ce-3.el7 -y 设置镜像存储目录 找到大点的挂载的目录进行存储 # 修改docker配置 vi /lib/systemd/system/docker.service 找到这行，王后面加上存储目录，例如这里是 --graph /apps/docker （此处也可以另外建一个文件去指定，详细参考下面方法） ExecStart=/usr/bin/docker --graph /apps/docker 启动docker并设置docker开机启动 systemctl enable docker systemctl start docker
2)本地rpm包安装
a)下载地址
https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
17版本请把docker-ce-selinux也一起下载
b、创建挂在目录以及阿里源的文件
mkdir -p /data/docker-root
mkdir -p /etc/docker
touch /etc/docker/daemon.json
chmod 700 /etc/docker/daemon.json
cat > /etc/docker/daemon.json << EOF
{
"graph":"/data/docker-root",
"registry-mirrors": ["https://7bezldxe.mirror.aliyuncs.com"]
}
EOF
c、安装docker
yum localinstall ./docker* -y
启动docker并设置docker开机启动
systemctl enable docker
systemctl start docker
3)二进制安装
a)下载地址
二进制包下载地址：https://download.docker.com/linux/static/stable/x86_64/
b)解压安装
tar zxvf docker-18.09.6.tgz
mv docker/* /usr/bin
mkdir /etc/docker
mkdir -p /data/docker-root
mv daemon.json /etc/docker
mv docker.service /usr/lib/systemd/system
启动docker并设置docker开机启动
systemctl start docker
systemctl enable docker
c)涉及到的daemon.json和docker.service的文件内容
为了配置docker的目录和docker改为systemd以及阿里源
cat > /etc/docker/daemon.json << EOF
{
"graph":"/data/docker-root",
"registry-mirrors": ["https://7bezldxe.mirror.aliyuncs.com"]
}
EOF
为了设置命令启动的
cat > /usr/lib/systemd/system/docker.service << EOF
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network.target firewalld.service
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
[Install]
WantedBy=multi-user.target
EOF
3、安装cfssl工具（任何一个主机）：
证书 openssl 麻烦点 cfssl简单点
mkdir -p /usr/local/ssl cd /usr/local/ssl 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 mv cfssl_linux-amd64 /usr/local/bin/cfssl mv cfssljson_linux-amd64 /usr/local/bin/cfssljson mv cfssl-certinfo_linux-amd64 /usr/local/bin/cfssl-certinfo chmod +x /usr/local/bin/cfssl*
4、生成etcd证书
首先创建三个文件
vi ca-config.json
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"www": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
vi ca-csr.json
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing"
}
]
}
vi etcd-csr.json
{
"CN": "etcd",
"hosts": [
"192.168.200.221",
"192.168.200.222",
"192.168.200.223"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
执行命令
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 etcd-csr.json | cfssljson -bare etcd
就会生成ca-key.pem ca.pem server-key.pem server.pem这几个文件
5、部署etcd(三个节点)
二进制包下载地址：https://github.com/coreos/etcd/releases/tag/v3.3.18
wget https://github.com/etcd-io/etcd/releases/download/v3.3.18/etcd-v3.3.18-linux-amd64.tar.gz
tar -zxvf etcd-v3.3.18-linux-amd64.tar.gz
mkdir -p /opt/etcd/{bin,cfg,ssl}
cp etcd etcdctl /opt/etcd/bin/
cp /usr/local/ssl/etcd/*.pem /opt/etcd/ssl/
chmod +x /opt/etcd/bin/*
# vi /opt/etcd/cfg/etcd.conf #[Member] ETCD_NAME="etcd-1" ETCD_DATA_DIR="/var/lib/etcd/default.etcd" ETCD_LISTEN_PEER_URLS="https://192.168.200.221:2380" ETCD_LISTEN_CLIENT_URLS="https://192.168.200.221:2379" #[Clustering] ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.200.221:2380" ETCD_ADVERTISE_CLIENT_URLS="https://192.168.200.221:2379" ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.200.221:2380,etcd-2=https://192.168.200.222:2380,etcd-3=https://192.168.200.223:2380" ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_INITIAL_CLUSTER_STATE="new" # 注意修改每个节点的对应IP和etcd_name
# 启动文件
vi /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.conf
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/etcd.pem \
--key-file=/opt/etcd/ssl/etcd-key.pem \
--peer-cert-file=/opt/etcd/ssl/etcd.pem \
--peer-key-file=/opt/etcd/ssl/etcd-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
cd /opt scp -r etcd root@192.168.200.222:/opt/ scp -r etcd root@192.168.200.223:/opt/
启动并查看集群状态
systemctl daemon-reload systemctl start etcd systemctl enable etcd cd /opt/etcd/ssl /opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=etcd.pem --key-file=etcd-key.pem --endpoints="https://192.168.200.221:2379,https://192.168.200.222:2379,https://192.168.200.223:2379" cluster-health
最后会提示health
6、生成apiserver证书
首先建4个文件
vi ca-config.json
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
vi ca-csr.json
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing",
"O": "k8s",
"OU": "System"
}
]
}
vi server-csr.json
{
"CN": "kubernetes",
"hosts": [
"10.0.0.1",
"127.0.0.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local",
"192.168.200.221",
"192.168.200.222",
"192.168.200.223",
"192.168.200.224",
"192.168.200.225"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
vi 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"
}
]
}
执行命令
cfssl gencert -initca ca-csr.json | cfssljson -bare ca - cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy
生成如下文件：ca-key.pem ca.pem kube-proxy-key.pem kube-proxy.pem server-key.pem server.pem
7、部署apiserver，controller-manager和scheduler
下载地址：https://github.com/kubernetes/kubernetes/
wget https://dl.k8s.io/v1.16.3/kubernetes-server-linux-amd64.tar.gz
# (我竟然下载不下来，我用原来的软件包)
mkdir -p /opt/kubernetes/{bin,cfg,ssl,logs}
# 三个启动脚本
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF [Unit] Description=Kubernetes API Server Documentation=https://github.com/kubernetes/kubernetes [Service] EnvironmentFile=/opt/kubernetes/cfg/kube-apiserver.conf ExecStart=/opt/kubernetes/bin/kube-apiserver $KUBE_APISERVER_OPTS Restart=on-failure [Install] WantedBy=multi-user.target EOF
cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF [Unit] Description=Kubernetes Controller Manager Documentation=https://github.com/kubernetes/kubernetes [Service] EnvironmentFile=/opt/kubernetes/cfg/kube-controller-manager.conf ExecStart=/opt/kubernetes/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS Restart=on-failure [Install] WantedBy=multi-user.target EOF
cat > /usr/lib/systemd/system/kube-scheduler.service << EOF [Unit] Description=Kubernetes Scheduler Documentation=https://github.com/kubernetes/kubernetes [Service] EnvironmentFile=/opt/kubernetes/cfg/kube-scheduler.conf ExecStart=/opt/kubernetes/bin/kube-scheduler $KUBE_SCHEDULER_OPTS Restart=on-failure [Install] WantedBy=multi-user.target EOF
cp kube-apiserver kube-controller-manager kube-scheduler kubectl /opt/kubernetes/bin/ chmod +x /opt/kubernetes/bin/* cp *.pem /opt/kubernetes/ssl/
配置文件
cat > /opt/kubernetes/cfg/kube-apiserver.conf << EOF KUBE_APISERVER_OPTS="--logtostderr=false \ --v=2 \ --log-dir=/opt/kubernetes/logs \ --etcd-servers=https://192.168.200.221:2379,https://192.168.200.222:2379,https://192.168.200.223:2379 \ --bind-address=192.168.200.221 \ --secure-port=6443 \ --advertise-address=192.168.200.221 \ --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=true \ --token-auth-file=/opt/kubernetes/cfg/token.csv \ --service-node-port-range=30000-32767 \ --kubelet-client-certificate=/opt/kubernetes/ssl/server.pem \ --kubelet-client-key=/opt/kubernetes/ssl/server-key.pem \ --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/etcd/ssl/ca.pem \ --etcd-certfile=/opt/etcd/ssl/etcd.pem \ --etcd-keyfile=/opt/etcd/ssl/etcd-key.pem \ --audit-log-maxage=30 \ --audit-log-maxbackup=3 \ --audit-log-maxsize=100 \ --audit-log-path=/opt/kubernetes/logs/k8s-audit.log" EOF
cat > /opt/kubernetes/cfg/kube-controller-manager.conf << EOF KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=false \ --v=2 \ --log-dir=/opt/kubernetes/logs \ --leader-elect=true \ --master=127.0.0.1:8080 \ --address=127.0.0.1 \ --allocate-node-cidrs=true \ --cluster-cidr=10.244.0.0/16 \ --service-cluster-ip-range=10.0.0.0/24 \ --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 \ --experimental-cluster-signing-duration=87600h0m0s" EOF
cat > /opt/kubernetes/cfg/kube-scheduler.conf << EOF KUBE_SCHEDULER_OPTS="--logtostderr=false \ --v=2 \ --log-dir=/opt/kubernetes/logs \ --leader-elect \ --master=127.0.0.1:8080 \ --address=127.0.0.1" EOF
启动
systemctl start kube-apiserver systemctl start kube-controller-manager systemctl start kube-scheduler systemctl enable kube-apiserver systemctl enable kube-controller-manager systemctl enable kube-scheduler
# 给kubelet-bootstrap授权：
/opt/kubernetes/bin/kubectl create clusterrolebinding kubelet-bootstrap \ --clusterrole=system:node-bootstrapper \ --user=kubelet-bootstrap
# token也可自行生成替换：
head -c 16 /dev/urandom | od -An -t x | tr -d ' '
注意 apiserver配置的token必须要与node节点bootstrap.kubeconfig配置里一致。
8、部署node节点：kubelet kube-proxy
启动脚本
cat > /usr/lib/systemd/system/kubelet.service << EOF [Unit] Description=Kubernetes Kubelet After=docker.service Before=docker.service [Service] EnvironmentFile=/opt/kubernetes/cfg/kubelet.conf ExecStart=/opt/kubernetes/bin/kubelet $KUBELET_OPTS Restart=on-failure LimitNOFILE=65536 [Install] WantedBy=multi-user.target EOF
cat > /usr/lib/systemd/system/kube-proxy.service << EOF [Unit] Description=Kubernetes Proxy After=network.target [Service] EnvironmentFile=/opt/kubernetes/cfg/kube-proxy.conf ExecStart=/opt/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS Restart=on-failure LimitNOFILE=65536 [Install] WantedBy=multi-user.target EOF
配置文件
cat > /opt/kubernetes/cfg/bootstrap.kubeconfig << EOF
apiVersion: v1
clusters:
- cluster:
certificate-authority: /opt/kubernetes/ssl/ca.pem
server: https://192.168.200.221:6443
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: kubelet-bootstrap
name: default
current-context: default
kind: Config
preferences: {}
users:
- name: kubelet-bootstrap
user:
token: c47ffb939f5ca36231d9e3121a252940
EOF
cat > /opt/kubernetes/cfg/kube-proxy.kubeconfig << EOF
apiVersion: v1
clusters:
- cluster:
certificate-authority: /opt/kubernetes/ssl/ca.pem
server: https://192.168.200.221:6443
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: kube-proxy
name: default
current-context: default
kind: Config
preferences: {}
users:
- name: kube-proxy
user:
client-certificate: /opt/kubernetes/ssl/kube-proxy.pem
client-key: /opt/kubernetes/ssl/kube-proxy-key.pem
EOF
cat > /opt/kubernetes/cfg/kubelet.conf << EOF KUBELET_OPTS="--logtostderr=false \ --v=2 \ --log-dir=/opt/kubernetes/logs \ --hostname-override=master \ --network-plugin=cni \ --kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \ --bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \ --config=/opt/kubernetes/cfg/kubelet-config.yml \ --cert-dir=/opt/kubernetes/ssl \ --pod-infra-container-image=lizhenliang/pause-amd64:3.0" EOF
cat > /opt/kubernetes/cfg/kubelet-config.yml << EOF kind: KubeletConfiguration apiVersion: kubelet.config.k8s.io/v1beta1 address: 0.0.0.0 port: 10250 readOnlyPort: 10255 cgroupDriver: cgroupfs clusterDNS: - 10.0.0.2 clusterDomain: cluster.local failSwapOn: false authentication: anonymous: enabled: false webhook: cacheTTL: 2m0s enabled: true x509: clientCAFile: /opt/kubernetes/ssl/ca.pem authorization: mode: Webhook webhook: cacheAuthorizedTTL: 5m0s cacheUnauthorizedTTL: 30s evictionHard: imagefs.available: 15% memory.available: 100Mi nodefs.available: 10% nodefs.inodesFree: 5% maxOpenFiles: 1000000 maxPods: 110 EOF
cat > /opt/kubernetes/cfg/kube-proxy.conf << EOF KUBE_PROXY_OPTS="--logtostderr=false \ --v=2 \ --log-dir=/opt/kubernetes/logs \ --config=/opt/kubernetes/cfg/kube-proxy-config.yml" EOF
cat > /opt/kubernetes/cfg/kube-proxy-config.yml << EOF kind: KubeProxyConfiguration apiVersion: kubeproxy.config.k8s.io/v1alpha1 address: 0.0.0.0 metricsBindAddress: 0.0.0.0:10249 clientConnection: kubeconfig: /opt/kubernetes/cfg/kube-proxy.kubeconfig hostnameOverride: master clusterCIDR: 10.0.0.0/24 mode: ipvs ipvs: scheduler: "rr" iptables: masqueradeAll: true EOF
scp ca.pem kube-proxy.pem kube-proxy-key.pem root@192.168.200.221:/opt/kubernetes/ssl/ scp ca.pem kube-proxy.pem kube-proxy-key.pem root@192.168.200.222:/opt/kubernetes/ssl/ scp ca.pem kube-proxy.pem kube-proxy-key.pem root@192.168.200.223:/opt/kubernetes/ssl/ scp kubelet kube-proxy root@192.168.200.221:/opt/kubernetes/bin/ scp kubelet kube-proxy root@192.168.200.222:/opt/kubernetes/bin/ scp kubelet kube-proxy root@192.168.200.223:/opt/kubernetes/bin/
启动
systemctl start kubelet systemctl start kube-proxy systemctl enable kubelet systemctl enable kube-proxy
允许给Node颁发证书
kubectl get csr kubectl certificate approve node-csr-MYUxbmf_nmPQjmH3LkbZRL2uTO-_FCzDQUoUfTy7YjI kubectl get node
9、 部署CNI网络
二进制包下载地址：https://github.com/containernetworking/plugins/releases
mkdir /opt/cni/bin /etc/cni/net.d -p cd /opt/cni/bin wget https://github.com/containernetworking/plugins/releases/download/v0.8.3/cni-plugins-linux-amd64-v0.8.3.tgz tar zxvf cni-plugins-linux-amd64-v0.8.2.tgz –C /opt/cni/bin scp * root@192.168.200.221:/opt/cni/bin scp * root@192.168.200.222:/opt/cni/bin scp * root@192.168.200.223:/opt/cni/bin
确保kubelet启用CNI：
cat /opt/kubernetes/cfg/kubelet.conf
--network-plugin=cni
在Master执行：
在这个地址找到flannel如下命令https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/
kubectl apply –f https://raw.githubusercontent.com/coreos/flannel/2140ac876ef134e0ed5af15c65e414cf26827915/Documentation/kube-flannel.yml
此处我已经下载下来了，因为我要确保这个文件里的 "Network": "10.244.0.0/16"IP内容与下面配置文件一致
cat /opt/kubernetes/cfg/kube-controller-manager.conf
--cluster-cidr=10.244.0.0/16
wget https://raw.githubusercontent.com/coreos/flannel/2140ac876ef134e0ed5af15c65e414cf26827915/Documentation/kube-flannel.yml kubectl apply –f kube-flannel.yml kubectl get pods -n kube-system NAME READY STATUS RESTARTS AGE kube-flannel-ds-amd64-8crzv 1/1 Running 0 5m37s kube-flannel-ds-amd64-8mp47 1/1 Running 0 5m37s kube-flannel-ds-amd64-ngkrr 1/1 Running 0 5m37s
10、 授权apiserver访问kubelet
为提供安全性，kubelet禁止匿名访问，必须授权才可以。
# cat /opt/kubernetes/cfg/kubelet-config.yml
……
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 2m0s
enabled: true
x509:
clientCAFile: /opt/kubernetes/ssl/ca.pem
……
下载地址https://github.com/kubernetes/kubernetes/tree/release-1.16/cluster/addons/rbac/kubelet-api-auth
两个合并
kubectl apply –f apiserver-to-kubelet-rbac.yaml
提供一个apiserver-to-kubelet-rbac.yaml参考
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
labels:
kubernetes.io/bootstrapping: rbac-defaults
name: system:kube-apiserver-to-kubelet
rules:
- apiGroups:
- ""
resources:
- nodes/proxy
- nodes/stats
- nodes/log
- nodes/spec
- nodes/metrics
- pods/log
verbs:
- "*"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: system:kube-apiserver
namespace: ""
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:kube-apiserver-to-kubelet
subjects:
- apiGroup: rbac.authorization.k8s.io
kind: User
name: kubernetes
11. 部署Web UI和DNS
https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/
wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0-beta4/aio/deploy/recommended.yaml kubectl apply -f recommended.yaml
提供一个recommended.yaml参考
# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
apiVersion: v1
kind: Namespace
metadata:
name: kubernetes-dashboard
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
type: NodePort
ports:
- port: 443
targetPort: 8443
nodePort: 30001
selector:
k8s-app: kubernetes-dashboard
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kubernetes-dashboard
type: Opaque
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-csrf
namespace: kubernetes-dashboard
type: Opaque
data:
csrf: ""
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-key-holder
namespace: kubernetes-dashboard
type: Opaque
---
kind: ConfigMap
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-settings
namespace: kubernetes-dashboard
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
rules:
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
verbs: ["get", "update", "delete"]
# Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
resources: ["configmaps"]
resourceNames: ["kubernetes-dashboard-settings"]
verbs: ["get", "update"]
# Allow Dashboard to get metrics.
- apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster", "dashboard-metrics-scraper"]
verbs: ["proxy"]
- apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
verbs: ["get"]
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
rules:
# Allow Metrics Scraper to get metrics from the Metrics server
- apiGroups: ["metrics.k8s.io"]
resources: ["pods", "nodes"]
verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
namespace: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.0.0-beta4
imagePullPolicy: Always
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
volumeMounts:
- name: kubernetes-dashboard-certs
mountPath: /certs
# Create on-disk volume to store exec logs
- mountPath: /tmp
name: tmp-volume
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
ports:
- port: 8000
targetPort: 8000
selector:
k8s-app: dashboard-metrics-scraper
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: dashboard-metrics-scraper
template:
metadata:
labels:
k8s-app: dashboard-metrics-scraper
spec:
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.1
ports:
- containerPort: 8000
protocol: TCP
livenessProbe:
httpGet:
scheme: HTTP
path: /
port: 8000
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- mountPath: /tmp
name: tmp-volume
serviceAccountName: kubernetes-dashboard
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
volumes:
- name: tmp-volume
emptyDir: {}
网页登陆用token：创建service account并绑定默认cluster-admin管理员集群角色：
# cat dashboard-adminuser.yaml apiVersion: v1 kind: ServiceAccount metadata: name: admin-user namespace: kubernetes-dashboard --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: admin-user roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: admin-user namespace: kubernetes-dashboard
获取token：
kubectl -n kubernetes-dashboard describe secret $(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}')
访问地址：http://NodeIP:30001使用输出的token登录Dashboard。
coredns下载地址https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/dns/coredns/
建议下载下来，然后修改里面的image地址，否则拉取不动
kubectl apply –f coredns.yaml
提供一个coredns参考
# Warning: This is a file generated from the base underscore template file: coredns.yaml.base
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
health
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
upstream
fallthrough in-addr.arpa ip6.arpa
}
prometheus :9153
proxy . /etc/resolv.conf
cache 30
loop
reload
loadbalance
}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: coredns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
# replicas: not specified here:
# 1. In order to make Addon Manager do not reconcile this replicas parameter.
# 2. Default is 1.
# 3. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: kube-dns
annotations:
seccomp.security.alpha.kubernetes.io/pod: 'docker/default'
spec:
serviceAccountName: coredns
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
- key: "CriticalAddonsOnly"
operator: "Exists"
containers:
- name: coredns
image: lizhenliang/coredns:1.2.2
imagePullPolicy: IfNotPresent
resources:
limits:
memory: 170Mi
requests:
cpu: 100m
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
- name: config-volume
mountPath: /etc/coredns
readOnly: true
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
securityContext:
allowPrivilegeEscalation: false
capabilities:
add:
- NET_BIND_SERVICE
drop:
- all
readOnlyRootFilesystem: true
dnsPolicy: Default
volumes:
- name: config-volume
configMap:
name: coredns
items:
- key: Corefile
path: Corefile
---
apiVersion: v1
kind: Service
metadata:
name: kube-dns
namespace: kube-system
annotations:
prometheus.io/port: "9153"
prometheus.io/scrape: "true"
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "CoreDNS"
spec:
selector:
k8s-app: kube-dns
clusterIP: 10.0.0.2
ports:
- name: dns
port: 53
protocol: UDP
- name: dns-tcp
port: 53
protocol: TCP
kubectl get pods -n kube-system