##可选保持时间同步
yum -y install ntpdate
crontab -e
#时间同步
*/5 * * * * /usr/sbin/ntpdate 0.asia.pool.ntp.org
##关闭防火墙和selinux
systemctl stop firewalld
vim /etc/hosts
172.22.154.215 master215
172.22.154.216 node216
172.22.154.217 node217
ssh-keygen
ssh-copy-id -i /root/.ssh/id_rsa.pub master215
ssh-copy-id -i /root/.ssh/id_rsa.pub node216
ssh-copy-id -i /root/.ssh/id_rsa.pub node217
软件准备
docker-20.10.7.tgz
etcd-v3.4.15-linux-amd64.tar.gz
kubernetes-server-linux-amd64.tar.gz
cfssl cfssl-certinfo cfssljson
镜像准备
registry:2
calico/kube-controllers:v3.22.1
calico/cni:v3.22.1
calico/pod2daemon-flexvol:v3.22.1
calico/node:v3.22.1
registry.cn-beijing.aliyuncs.com/acs/aliyun-ingress-controller:v0.30.0.2-9597b3685-aliyun
registry.cn-beijing.aliyuncs.com/acs/busybox:v1.29.2
mirrorgooglecontainers/pause-amd64:3.1
## 创建目录结构
mkdir -pv /opt/etcd/{bin,cfg,ssl,logs}
mkdir -pv /opt/k8s/{bin,cfg,ssl,logs,yaml}
mkdir -pv /opt/cni/{bin,cfg,yaml}
mkdir -pv /etc/cni/
etcd安装
添加证书生成工具
chmod +x cfssl cfssljson cfssl-certinfo
cp cfssl cfssljson cfssl-certinfo /usr/bin/
#创建证书生成目录
mkdir -pv /data/TLS/{etcd,k8s}
cd /data/TLS/etcd
cd /data/TLS/etcd/
cat > ca-config.json << EOF
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"www": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
cat > ca-csr.json << EOF
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing"
}
]
}
EOF
生成证书
cfssl gencert -initca ca-csr.json | cfssljson -bare ca
#查看
ca-config.json ca.csr ca-csr.json ca-key.pem ca.pem
#hosts文件中包含etcd节点的IP可以多预留几个
cat > server-csr.json << EOF
{
"CN": "etcd",
"hosts": [
"172.22.154.215",
"172.22.154.216",
"172.22.154.217",
"172.22.154.218",
"172.22.154.219"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
EOF
#生成证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server
ca-config.json ca.csr ca-csr.json ca-key.pem ca.pem server-csr.json serverlsca-config.json.csr serverlsca-config.json-key.pem serverlsca-config.json.pem
#拷贝证书
cp /data/TLS/etcd/*.pem /opt/etcd/ssl/
rsync -av /data/TLS/etcd/*.pem node216:/opt/etcd/ssl/
rsync -av /data/TLS/etcd/*.pem node217:/opt/etcd/ssl/
#拷贝软件
tar -zxvf etcd-v3.4.15-linux-amd64.tar.gz
cp etcd-v3.4.15-linux-amd64/etcd* /opt/etcd/bin/
rsync -av /opt/etcd/bin/* node216:/opt/etcd/bin/
rsync -av /opt/etcd/bin/* node217:/opt/etcd/bin/
#配置etcd配置文件
#master215
cat > /opt/etcd/cfg/etcd.conf << EOF
#[Member]
ETCD_NAME="etcd-1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://172.22.154.215:2380"
ETCD_LISTEN_CLIENT_URLS="https://172.22.154.215:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://172.22.154.215:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://172.22.154.215:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://172.22.154.215:2380,etcd-2=https://172.22.154.216:2380,etcd-3=https://172.22.154.217:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF
#node216
cat > /opt/etcd/cfg/etcd.conf << EOF
#[Member]
ETCD_NAME="etcd-2"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://172.22.154.216:2380"
ETCD_LISTEN_CLIENT_URLS="https://172.22.154.216:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://172.22.154.216:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://172.22.154.216:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://172.22.154.215:2380,etcd-2=https://172.22.154.216:2380,etcd-3=https://172.22.154.217:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF
#node217
cat > /opt/etcd/cfg/etcd.conf << EOF
#[Member]
ETCD_NAME="etcd-3"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://172.22.154.217:2380"
ETCD_LISTEN_CLIENT_URLS="https://172.22.154.217:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://172.22.154.217:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://172.22.154.217:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://172.22.154.215:2380,etcd-2=https://172.22.154.216:2380,etcd-3=https://172.22.154.217:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF
# ETCD_NAME：节点名称，集群中唯一
# ETCD_DATA_DIR：数据目录
# 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
###配置etcd启动文件
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/etcd/cfg/etcd.conf
ExecStart=/opt/etcd/bin/etcd \
--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 \
--logger=zap
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
启动etcd
systemctl daemon-reload
systemctl restart etcd
systemctl enable etcd
systemctl status etcd
安装DOCKER
tar -zxvf docker-20.10.7.tgz
cp docker/* /usr/bin/
scp docker/* node216:/usr/bin/
scp docker/* node217:/usr/bin/
##三台操作
mkdir /etc/docker
cat > /etc/docker/daemon.json << EOF
{
"data-root": "/var/lib/docker",
"exec-opts": ["native.cgroupdriver=cgroupfs"],
"insecure-registries": ["https://gsm39obv.mirror.aliyuncs.com","harbor.local"],
"max-concurrent-downloads": 10,
"live-restore": true,
"log-driver": "json-file",
"log-level": "warn",
"log-opts": {
"max-size": "50m",
"max-file": "1"
},
"storage-driver": "overlay2"
}
EOF
###harbor.local为后期要使用的本地镜像仓库地址
##创建启动文件
cat > /usr/lib/systemd/system/docker.service << EOF
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.io
[Service]
Environment="PATH=/bin:/sbin:/usr/bin:/usr/sbin"
ExecStart=/usr/bin/dockerd
ExecStartPost=/sbin/iptables -I FORWARD -s 0.0.0.0/0 -j ACCEPT
ExecReload=/bin/kill -s HUP $MAINPID
Restart=always
RestartSec=5
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
Delegate=yes
KillMode=process
[Install]
WantedBy=multi-user.target
EOF
##启动docker
systemctl daemon-reload
systemctl restart docker
systemctl status docker
systemctl enable docker
安装MASTER
tar -zxvf kubernetes-server-linux-amd64.tar.gz
cd kubernetes/server/bin/
cp kubectl /usr/bin/
rsync -av kubectl kube-apiserver kube-controller-manager kube-scheduler kubelet kube-proxy /opt/k8s/bin/
#同步到node节点
rsync -av kubelet kube-proxy node216:/opt/k8s/bin/
rsync -av kubelet kube-proxy node217:/opt/k8s/bin/
##生成K8S证书
cd /data/TLS/k8s/
cd /data/TLS/k8s/
cat > ca-config.json << EOF
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
cat > ca-csr.json << EOF
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
cfssl gencert -initca ca-csr.json | cfssljson -bare ca
## 创建证书申请文件：
###可以多预留几个IP后期新增K8S节点
cat > server-csr.json << EOF
{
"CN": "kubernetes",
"hosts": [
"10.0.0.1",
"127.0.0.1",
"172.22.154.215",
"172.22.154.216",
"172.22.154.217",
"172.22.154.218",
"172.22.154.219",
"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"
}
]
}
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server
# master 节点
#部署kube-apiserver
cp /data/TLS/k8s/ca*pem /opt/k8s/ssl/
cp /data/TLS/k8s/server*pem /opt/k8s/ssl/
#同步到node节点
scp /data/TLS/k8s/ca.pem node216:/opt/k8s/ssl
scp /data/TLS/k8s/ca.pem node217:/opt/k8s/ssl
#创建配置文件
cat > /opt/k8s/cfg/kube-apiserver.conf << EOF
KUBE_APISERVER_OPTS="--logtostderr=false \\
--feature-gates=RemoveSelfLink=false \\
--v=2 \\
--log-dir=/opt/k8s/logs \\
--etcd-servers=https://172.22.154.215:2379,https://172.22.154.216:2379,https://172.22.154.217:2379 \\
--bind-address=172.22.154.215 \\
--secure-port=6443 \\
--advertise-address=172.22.154.215 \\
--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/k8s/cfg/token.csv \\
--service-node-port-range=30000-32767 \\
--kubelet-client-certificate=/opt/k8s/ssl/server.pem \\
--kubelet-client-key=/opt/k8s/ssl/server-key.pem \\
--tls-cert-file=/opt/k8s/ssl/server.pem \\
--tls-private-key-file=/opt/k8s/ssl/server-key.pem \\
--client-ca-file=/opt/k8s/ssl/ca.pem \\
--service-account-key-file=/opt/k8s/ssl/ca-key.pem \\
--service-account-issuer=https://kubernetes.default.svc.cluster.local \\
--service-account-signing-key-file=/opt/k8s/ssl/server-key.pem \\
--etcd-cafile=/opt/etcd/ssl/ca.pem \\
--etcd-certfile=/opt/etcd/ssl/server.pem \\
--etcd-keyfile=/opt/etcd/ssl/server-key.pem \\
--requestheader-client-ca-file=/opt/k8s/ssl/ca.pem \\
--proxy-client-cert-file=/opt/k8s/ssl/server.pem \\
--proxy-client-key-file=/opt/k8s/ssl/server-key.pem \\
--requestheader-allowed-names=kubernetes \\
--requestheader-extra-headers-prefix=X-Remote-Extra- \\
--requestheader-group-headers=X-Remote-Group \\
--requestheader-username-headers=X-Remote-User \\
--enable-aggregator-routing=true \\
--audit-log-maxage=30 \\
--audit-log-maxbackup=3 \\
--audit-log-maxsize=100 \\
--audit-log-path=/opt/k8s/logs/k8s-audit.log"
EOF
#创建TLS所需的Token
echo "`head -c 16 /dev/urandom | od -An -t x | tr -d ' '`,kubelet-bootstrap,10001,"system:node-bootstrapper"" > /opt/k8s/cfg/token.csv
#创建apiserver启动文件
cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetesAfter=network.target
[Service]
EnvironmentFile=/opt/k8s/cfg/kube-apiserver.conf
ExecStart=/opt/k8s/bin/kube-apiserver \$KUBE_APISERVER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl restart kube-apiserver
systemctl enable kube-apiserver
systemctl status kube-apiserver
#部署kube-controller-manager
#生成配置文件
cat > /opt/k8s/cfg/kube-controller-manager.conf << EOF
KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=false \\
--v=2 \\
--log-dir=/opt/k8s/logs \\
--leader-elect=true \\
--kubeconfig=/opt/k8s/cfg/kube-controller-manager.kubeconfig \\
--bind-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/k8s/ssl/ca.pem \\
--cluster-signing-key-file=/opt/k8s/ssl/ca-key.pem \\
--root-ca-file=/opt/k8s/ssl/ca.pem \\
--service-account-private-key-file=/opt/k8s/ssl/ca-key.pem \\
--cluster-signing-duration=87600h0m0s"
EOF
# –kubeconfig：连接apiserver配置文件
# –leader-elect：当该组件启动多个时，自动选举（HA）
# –cluster-signing-cert-file/–cluster-signing-key-file：自动为kubelet颁发证书的CA，与apiserver保持一致
#生成kube-controller-manager.kubeconfig
cd /data/TLS/k8s
cat > kube-controller-manager-csr.json << EOF
{
"CN": "system:kube-controller-manager",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF
# 生成证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager
#生成kube-controller-manager.kubeconfig文件
#生成kubeconfig文件(在/data/TLS/k8s下执行)
KUBE_APISERVER="https://172.22.154.215:6443"
KUBE_CONFIG="/opt/k8s/cfg/kube-controller-manager.kubeconfig"
kubectl config set-cluster kubernetes \
--certificate-authority=/opt/k8s/ssl/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-controller-manager \
--client-certificate=./kube-controller-manager.pem \
--client-key=./kube-controller-manager-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-controller-manager \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
#创建Kube-controller-manager启动文件
cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetesAfter=kube-apiserver.service
[Service]
EnvironmentFile=/opt/k8s/cfg/kube-controller-manager.conf
ExecStart=/opt/k8s/bin/kube-controller-manager \$KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
#启动kube-controller-manager
systemctl daemon-reload
systemctl restart kube-controller-manager
systemctl status kube-controller-manager
systemctl enable kube-controller-manager
##部署kube-scheduler
#生成配置文件
cat > /opt/k8s/cfg/kube-scheduler.conf << EOF
KUBE_SCHEDULER_OPTS="--logtostderr=false \\
--v=2 \\
--log-dir=/opt/k8s/logs \\
--leader-elect \\
--kubeconfig=/opt/k8s/cfg/kube-scheduler.kubeconfig \\
--bind-address=127.0.0.1"
EOF
# –kubeconfig：连接apiserver配置文件
# –leader-elect：当该组件启动多个时，自动选举（HA）
#生成kube-scheduler.kubeconfig
cd /data/TLS/k8s
# 创建证书请求文件
cat > kube-scheduler-csr.json << EOF
{
"CN": "system:kube-scheduler",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF
# 生成证书
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-scheduler-csr.json | cfssljson -bare kube-scheduler
#生成kubeconfig文件(在/data/TLS/k8s下执行)
KUBE_CONFIG="/opt/k8s/cfg/kube-scheduler.kubeconfig"
KUBE_APISERVER="https://172.22.154.215:6443"
kubectl config set-cluster kubernetes \
--certificate-authority=/opt/k8s/ssl/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-scheduler \
--client-certificate=./kube-scheduler.pem \
--client-key=./kube-scheduler-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-scheduler \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
#创建kube-scheduler启动文件
cat > /usr/lib/systemd/system/kube-scheduler.service << EOF
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetesAfter=kube-apiserver.service
[Service]
EnvironmentFile=/opt/k8s/cfg/kube-scheduler.conf
ExecStart=/opt/k8s/bin/kube-scheduler \$KUBE_SCHEDULER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
#启动kube-scheduer
systemctl daemon-reload
systemctl restart kube-scheduler
systemctl status kube-scheduler
systemctl enable kube-scheduler
##生成集群连接证书
cd /data/TLS/k8s
cat > admin-csr.json <<EOF
{
"CN": "admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
}
]
}
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin
mkdir /root/.kube
mkdir -pv /root/.kube
KUBE_CONFIG="/root/.kube/config"
KUBE_APISERVER="https://172.22.154.215:6443"
kubectl config set-cluster kubernetes \
--certificate-authority=/opt/k8s/ssl/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials cluster-admin \
--client-certificate=./admin.pem \
--client-key=./admin-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=cluster-admin \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
#查看集群状态
kubectl get cs
###部署node节点
##部署kubelet
#生成kubelet配置文件
###注意pause-amd镜像要放到私有仓库里
cat > /opt/k8s/cfg/kubelet.conf << EOF
KUBELET_OPTS="--logtostderr=false \\
--v=2 \\
--log-dir=/opt/k8s/logs \\
--hostname-override=172.22.154.215 \\
--network-plugin=cni \\
--kubeconfig=/opt/k8s/cfg/kubelet.kubeconfig \\
--bootstrap-kubeconfig=/opt/k8s/cfg/bootstrap.kubeconfig \\
--config=/opt/k8s/cfg/kubelet-config.yml \\
--cert-dir=/opt/k8s/ssl \\
--pod-infra-container-image=harbor.local/pause-amd64:3.1"
EOF
# –hostname-override：显示名称，为节点hostname, 集群中唯一
# –network-plugin：启用CNI
# –kubeconfig：空路径，会自动生成，后面用于连接apiserver
# –bootstrap-kubeconfig：首次启动向apiserver申请证书
# –config：配置参数文件
# –cert-dir：kubelet证书生成目录
# –pod-infra-container-image：管理Pod网络容器的镜像
#创建kubelet-config.yaml文件
cat > /opt/k8s/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/k8s/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
#kubelet初次加入集群引导kubeconfig文件
KUBE_CONFIG="/opt/k8s/cfg/bootstrap.kubeconfig"
KUBE_APISERVER="https://172.22.154.215:6443"
# 与token.csv里保持一致
TOKEN=`cat /opt/k8s/cfg/token.csv|awk -F',' '{print $1}'`
# 生成 kubelet bootstrap kubeconfig 配置文件
kubectl config set-cluster kubernetes \
--certificate-authority=/opt/k8s/ssl/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials "kubelet-bootstrap" \
--token=${TOKEN} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user="kubelet-bootstrap" \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
#创建Kubelet启动文件
cat > /usr/lib/systemd/system/kubelet.service << EOF
[Unit]
Description=Kubernetes Kubelet
After=docker.service
[Service]
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/cpu/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/cpuacct/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/cpuset/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/memory/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/pids/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/systemd/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/cpu/system.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/cpuacct/system.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/cpuset/system.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/memory/system.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/pids/system.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/systemd/system.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/hugetlb/podruntime.slice
ExecStartPre=/bin/mkdir -p /sys/fs/cgroup/hugetlb/system.slice
EnvironmentFile=/opt/k8s/cfg/kubelet.conf
ExecStart=/opt/k8s/bin/kubelet \$KUBELET_OPTS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
###为kubelet授权
kubectl create clusterrolebinding kubelet-bootstrap \
--clusterrole=system:node-bootstrapper \
--user=kubelet-bootstrap
#启动kubelet
systemctl daemon-reload
systemctl restart kubelet
systemctl status kubelet
systemctl enable kubelet
###把文件同步到其它节点
rsync -av /opt/k8s/cfg/{kubelet.conf,kubelet-config.yml,bootstrap.kubeconfig} node216:/opt/k8s/cfg/
rsync -av /opt/k8s/cfg/{kubelet.conf,kubelet-config.yml,bootstrap.kubeconfig} node217:/opt/k8s/cfg/
## 同步启动文件
rsync -av /usr/lib/systemd/system/kubelet.service root@node216:/usr/lib/systemd/system/kubelet.service
rsync -av /usr/lib/systemd/system/kubelet.service root@node217:/usr/lib/systemd/system/kubelet.service
###记得修改kubelet.config中hostname-override
## 其余节点启动
systemctl daemon-reload
systemctl restart kubelet
systemctl status kubelet
systemctl enable kubelet
#批准节点加入集群
kubectl get csr
NAME AGE SIGNERNAME REQUESTOR CONDITION
node-csr-0WjKzlX1V8froo4Mgou1K2NruNVsMdgjUM2Ki6OnZHo 2m18s kubernetes.io/kube-apiserver-client-kubelet kubelet-bootstrap Pending
node-csr-UfbDWOmC82vJrdiHR2G2Agv-e0lTECTl8sxHPX-XLd8 2m8s kubernetes.io/kube-apiserver-client-kubelet kubelet-bootstrap Pending
node-csr-xEtbNTttO6HD9_pE6HmgjSus7iAkBbJrLLGuU1D2MU0 20s kubernetes.io/kube-apiserver-client-kubelet kubelet-bootstrap Pending
kubectl certificate approve node-csr-0WjKzlX1V8froo4Mgou1K2NruNVsMdgjUM2Ki6OnZHo
kubectl certificate approve node-csr-UfbDWOmC82vJrdiHR2G2Agv-e0lTECTl8sxHPX-XLd8
kubectl certificate approve node-csr-xEtbNTttO6HD9_pE6HmgjSus7iAkBbJrLLGuU1D2MU0
############错误展示#######################
node217在启动Kubelet的时候没有修改config文件导致hostname冲突注册之后查看node并没有该节点
#停止Kubelet
systemctl stop kubelet
#修改config文件
vim /opt/k8s/cfg/kubelet.conf
#删除kubelet.kubeconfig 该文件中包含了注册信息不删除无法重新注册
rm -rf /opt/k8s/cfg/kubelet.kubeconfig
#重启Kubelet
systemctl restart kubelet
#再重新同意kubelet加入即可
####部署kube-proxy
#创建配置文件
cat > /opt/k8s/cfg/kube-proxy.conf << EOF
KUBE_PROXY_OPTS="
--logtostderr=false \\
--v=2 \\
--log-dir=/opt/k8s/logs \\
--config=/opt/k8s/cfg/kube-proxy-config.yml"
EOF
#生成证书
cd /data/TLS/k8s
# 创建证书请求文件
cat > kube-proxy-csr.json << EOF
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
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kube-proxy.kubeconfig文件
KUBE_CONFIG="/opt/k8s/cfg/kube-proxy.kubeconfig"
KUBE_APISERVER="https://172.22.154.215:6443"
kubectl config set-cluster kubernetes \
--certificate-authority=/opt/k8s/ssl/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-credentials kube-proxy \
--client-certificate=./kube-proxy.pem \
--client-key=./kube-proxy-key.pem \
--embed-certs=true \
--kubeconfig=${KUBE_CONFIG}
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-proxy \
--kubeconfig=${KUBE_CONFIG}
kubectl config use-context default --kubeconfig=${KUBE_CONFIG}
#创建Kube-proxy-config.yaml文件
cat > /opt/k8s/cfg/kube-proxy-config.yml << EOF
kind: KubeProxyConfiguration
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
metricsBindAddress: 0.0.0.0:10249
clientConnection:
kubeconfig: /opt/k8s/cfg/kube-proxy.kubeconfig
hostnameOverride: 172.22.154.215
clusterCIDR: 10.0.0.0/24
EOF
#创建kube-proxy启动文件
cat > /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Proxy
After=network.target
[Service]
EnvironmentFile=/opt/k8s/cfg/kube-proxy.conf
ExecStart=/opt/k8s/bin/kube-proxy \$KUBE_PROXY_OPTS
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
EOF
## 同步kube-proxy配置
rsync -av /opt/k8s/cfg/{kube-proxy.conf,kube-proxy-config.yml,kube-proxy.kubeconfig} node216:/opt/k8s/cfg/
rsync -av /opt/k8s/cfg/{kube-proxy.conf,kube-proxy-config.yml,kube-proxy.kubeconfig} node217:/opt/k8s/cfg/
## 同步启动文件
rsync -av /usr/lib/systemd/system/kube-proxy.service node216:/usr/lib/systemd/system/kube-proxy.service
rsync -av /usr/lib/systemd/system/kube-proxy.service node217:/usr/lib/systemd/system/kube-proxy.service
####要记得修改Kube-proxy-config.yaml文件中hostnameOverride
#启动kube-proxy
systemctl daemon-reload
systemctl restart kube-proxy
systemctl enable kube-proxy
systemctl status kube-proxy
#授权apiserver访问kubelet
cat > /opt/k8s/yaml/apiserver-to-kubelet-rbac.yaml << EOF
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
EOF
kubectl apply -f apiserver-to-kubelet-rbac.yaml
###搭建私有镜像仓库
###搭建镜像仓库会和ingress的443端口冲突，所以尽量不要复用
#添加解析 所有节点都要添加 IP替换为部署registry的节点IP
vim /etc/hosts/
172.22.154.215 harbor.local
#容器镜像自行准备
#创建证书
mkdir -p certs
openssl req \
-newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key \
-x509 -days 36500 -out certs/domain.crt
#启动仓库
docker run -d \
--restart=always \
--name registry \
-v "$(pwd)"/certs:/certs \
-v /mnt/registry:/var/lib/registry \
-e REGISTRY_HTTP_ADDR=0.0.0.0:443 \
-e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt \
-e REGISTRY_HTTP_TLS_KEY=/certs/domain.key \
-p 443:443 \
registry:2
#把证书发到每一个节点
mkdir -p /etc/docker/certs.d/harbor.local/
cp certs/domain.crt /etc/docker/certs.d/harbor.local/ca.crt
scp -r /etc/docker/certs.d node216:/etc/docker/
scp -r /etc/docker/certs.d node217:/etc/docker/
#上传所需的镜像
###部署calico
mkdir /opt/kubernetes/yaml
cd /opt/kubernetes/yaml
curl -k https://docs.projectcalico.org/manifests/calico-etcd.yaml -o calico-etcd.yaml
vim calico.yaml
## etcd 证书 base64 地址 (执行里面的命令生成的证书 base64 码，填入里面)
apiVersion: v1
kind: Secret
type: Opaque
metadata:
name: calico-etcd-secrets
namespace: kube-system
data:
etcd-key: "xxxxx执行结果"#(cat /opt/etcd/ssl/server-key.pem | base64 | tr -d '\n') ###这三个地方需要在shell界面执行完复制结果替换进来
etcd-cert:"xxxx" #(cat /opt/etcd/ssl/server.pem | base64 | tr -d '\n')
etcd-ca: "xxx" #(cat /opt/etcd/ssl/ca.pem | base64 | tr -d '\n')
## 如上()中只是生成base64码的命令实际操作时需要去掉(),只需要填写生成的编码并用双引号引起来即可
## ConfigMap
### 修改etcd地址
etcd_endpoints: "https://172.22.154.207:2379,https://172.22.154.207:2379,https://172.22.154.207:2379"
### 修改etcd证书位置
etcd_ca: "/calico-secrets/etcd-ca"
etcd_cert: "/calico-secrets/etcd-cert"
etcd_key: "/calico-secrets/etcd-key"
## 修改pod 分配的IP段(不能与node、service等地址同一网段)
- name: CALICO_IPV4POOL_CIDR
value: "10.244.0.0/16"
---
# Source: calico/templates/calico-node-rbac.yaml
# Include a clusterrole for the calico-node DaemonSet,
# and bind it to the calico-node serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: calico-node
rules:
# The CNI plugin needs to get pods, nodes, and namespaces.
- apiGroups: [""]
resources:
- pods
- nodes
- namespaces
verbs:
- get
# EndpointSlices are used for Service-based network policy rule
# enforcement.
- apiGroups: ["discovery.k8s.io"]
resources:
- endpointslices
verbs:
- watch
- list
- apiGroups: [""]
resources:
- endpoints
- services
verbs:
# Used to discover service IPs for advertisement.
- watch
- list
# Pod CIDR auto-detection on kubeadm needs access to config maps.
- apiGroups: [""]
resources:
- configmaps
verbs:
- get
- apiGroups: [""]
resources:
- nodes/status
verbs:
# Needed for clearing NodeNetworkUnavailable flag.
- patch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: calico-node
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-node
subjects:
- kind: ServiceAccount
name: calico-node
namespace: kube-system
---
# Source: calico/templates/calico-node.yaml
# This manifest installs the calico-node container, as well
# as the CNI plugins and network config on
# each master and worker node in a Kubernetes cluster.
kind: DaemonSet
apiVersion: apps/v1
metadata:
name: calico-node
namespace: kube-system
labels:
k8s-app: calico-node
spec:
selector:
matchLabels:
k8s-app: calico-node
updateStrategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
template:
metadata:
labels:
k8s-app: calico-node
spec:
nodeSelector:
kubernetes.io/os: linux
hostNetwork: true
tolerations:
# Make sure calico-node gets scheduled on all nodes.
- effect: NoSchedule
operator: Exists
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- effect: NoExecute
operator: Exists
serviceAccountName: calico-node
# Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
# deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
terminationGracePeriodSeconds: 0
priorityClassName: system-node-critical
initContainers:
# This container installs the CNI binaries
# and CNI network config file on each node.
- name: install-cni
image: docker.io/calico/cni:v3.20.2
command: ["/opt/cni/bin/install"]
envFrom:
- configMapRef:
# Allow KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT to be overridden for eBPF mode.
name: kubernetes-services-endpoint
optional: true
env:
# Name of the CNI config file to create.
- name: CNI_CONF_NAME
value: "10-calico.conflist"
# The CNI network config to install on each node.
- name: CNI_NETWORK_CONFIG
valueFrom:
configMapKeyRef:
name: calico-config
key: cni_network_config
# The location of the etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# CNI MTU Config variable
- name: CNI_MTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Prevents the container from sleeping forever.
- name: SLEEP
value: "false"
volumeMounts:
- mountPath: /host/opt/cni/bin
name: cni-bin-dir
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
- mountPath: /calico-secrets
name: etcd-certs
securityContext:
privileged: true
# Adds a Flex Volume Driver that creates a per-pod Unix Domain Socket to allow Dikastes
# to communicate with Felix over the Policy Sync API.
- name: flexvol-driver
image: docker.io/calico/pod2daemon-flexvol:v3.20.2
volumeMounts:
- name: flexvol-driver-host
mountPath: /host/driver
securityContext:
privileged: true
containers:
# Runs calico-node container on each Kubernetes node. This
# container programs network policy and routes on each
# host.
- name: calico-node
image: docker.io/calico/node:v3.20.2
envFrom:
- configMapRef:
# Allow KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT to be overridden for eBPF mode.
name: kubernetes-services-endpoint
optional: true
env:
# The location of the etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Set noderef for node controller.
- name: CALICO_K8S_NODE_REF
valueFrom:
fieldRef:
fieldPath: spec.nodeName
# Choose the backend to use.
- name: CALICO_NETWORKING_BACKEND
valueFrom:
configMapKeyRef:
name: calico-config
key: calico_backend
# Cluster type to identify the deployment type
- name: CLUSTER_TYPE
value: "k8s,bgp"
# Auto-detect the BGP IP address.
- name: IP
value: "autodetect"
# Enable IPIP
- name: CALICO_IPV4POOL_IPIP
value: "Always"
# Enable or Disable VXLAN on the default IP pool.
- name: CALICO_IPV4POOL_VXLAN
value: "Never"
# Set MTU for tunnel device used if ipip is enabled
- name: FELIX_IPINIPMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Set MTU for the VXLAN tunnel device.
- name: FELIX_VXLANMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Set MTU for the Wireguard tunnel device.
- name: FELIX_WIREGUARDMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# The default IPv4 pool to create on startup if none exists. Pod IPs will be
# chosen from this range. Changing this value after installation will have
# no effect. This should fall within `--cluster-cidr`.
- name: CALICO_IPV4POOL_CIDR
value: "10.244.0.0/16"
# Disable file logging so `kubectl logs` works.
- name: CALICO_DISABLE_FILE_LOGGING
value: "true"
# Set Felix endpoint to host default action to ACCEPT.
- name: FELIX_DEFAULTENDPOINTTOHOSTACTION
value: "ACCEPT"
# Disable IPv6 on Kubernetes.
- name: FELIX_IPV6SUPPORT
value: "false"
- name: FELIX_HEALTHENABLED
value: "true"
securityContext:
privileged: true
resources:
requests:
cpu: 250m
lifecycle:
preStop:
exec:
command:
- /bin/calico-node
- -shutdown
livenessProbe:
exec:
command:
- /bin/calico-node
- -felix-live
- -bird-live
periodSeconds: 10
initialDelaySeconds: 10
failureThreshold: 6
timeoutSeconds: 10
readinessProbe:
exec:
command:
- /bin/calico-node
- -felix-ready
- -bird-ready
periodSeconds: 10
timeoutSeconds: 10
volumeMounts:
# For maintaining CNI plugin API credentials.
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
readOnly: false
- mountPath: /lib/modules
name: lib-modules
readOnly: true
- mountPath: /run/xtables.lock
name: xtables-lock
readOnly: false
- mountPath: /var/run/calico
name: var-run-calico
readOnly: false
- mountPath: /var/lib/calico
name: var-lib-calico
readOnly: false
- mountPath: /calico-secrets
name: etcd-certs
- name: policysync
mountPath: /var/run/nodeagent
# For eBPF mode, we need to be able to mount the BPF filesystem at /sys/fs/bpf so we mount in the
# parent directory.
- name: sysfs
mountPath: /sys/fs/
# Bidirectional means that, if we mount the BPF filesystem at /sys/fs/bpf it will propagate to the host.
# If the host is known to mount that filesystem already then Bidirectional can be omitted.
mountPropagation: Bidirectional
- name: cni-log-dir
mountPath: /var/log/calico/cni
readOnly: true
volumes:
# Used by calico-node.
- name: lib-modules
hostPath:
path: /lib/modules
- name: var-run-calico
hostPath:
path: /var/run/calico
- name: var-lib-calico
hostPath:
path: /var/lib/calico
- name: xtables-lock
hostPath:
path: /run/xtables.lock
type: FileOrCreate
- name: sysfs
hostPath:
path: /sys/fs/
type: DirectoryOrCreate
# Used to install CNI.
- name: cni-bin-dir
hostPath:
path: /opt/cni/bin
- name: cni-net-dir
hostPath:
path: /etc/cni/net.d
# Used to access CNI logs.
- name: cni-log-dir
hostPath:
path: /var/log/calico/cni
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400
# Used to create per-pod Unix Domain Sockets
- name: policysync
hostPath:
type: DirectoryOrCreate
path: /var/run/nodeagent
# Used to install Flex Volume Driver
- name: flexvol-driver-host
hostPath:
type: DirectoryOrCreate
path: /usr/libexec/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-node
namespace: kube-system
---
# Source: calico/templates/calico-kube-controllers.yaml
# See https://github.com/projectcalico/kube-controllers
apiVersion: apps/v1
kind: Deployment
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
# The controllers can only have a single active instance.
replicas: 1
selector:
matchLabels:
k8s-app: calico-kube-controllers
strategy:
type: Recreate
template:
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
nodeSelector:
kubernetes.io/os: linux
tolerations:
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- key: node-role.kubernetes.io/master
effect: NoSchedule
serviceAccountName: calico-kube-controllers
priorityClassName: system-cluster-critical
# The controllers must run in the host network namespace so that
# it isn't governed by policy that would prevent it from working.
hostNetwork: true
containers:
- name: calico-kube-controllers
image: docker.io/calico/kube-controllers:v3.20.2
env:
# The location of the etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Choose which controllers to run.
- name: ENABLED_CONTROLLERS
value: policy,namespace,serviceaccount,workloadendpoint,node
volumeMounts:
# Mount in the etcd TLS secrets.
- mountPath: /calico-secrets
name: etcd-certs
livenessProbe:
exec:
command:
- /usr/bin/check-status
- -l
periodSeconds: 10
initialDelaySeconds: 10
failureThreshold: 6
timeoutSeconds: 10
readinessProbe:
exec:
command:
- /usr/bin/check-status
- -r
periodSeconds: 10
volumes:
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0440
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-kube-controllers
namespace: kube-system
---
# This manifest creates a Pod Disruption Budget for Controller to allow K8s Cluster Autoscaler to evict
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
maxUnavailable: 1
selector:
matchLabels:
k8s-app: calico-kube-controllers
---
# Source: calico/templates/calico-typha.yaml
---
# Source: calico/templates/configure-canal.yaml
---
# Source: calico/templates/kdd-crds.yaml
kubectl apply -f calico.yaml
#等pod都启动完毕查看node已经Ready
###部署coredns
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
- apiGroups:
- ""
resources:
- nodes
verbs:
- get
---
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 {
lameduck 5s
}
ready
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
fallthrough in-addr.arpa ip6.arpa
ttl 30
}
prometheus :9153
forward . /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: 'runtime/default'
spec:
priorityClassName: system-cluster-critical
serviceAccountName: coredns
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
nodeSelector:
kubernetes.io/os: linux
containers:
- name: coredns
image: coredns/coredns:1.8.0
imagePullPolicy: IfNotPresent
resources:
limits:
memory: 160Mi
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
readinessProbe:
httpGet:
path: /ready
port: 8181
scheme: HTTP
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
- name: metrics
port: 9153
protocol: TCP
###部署ingress-nginx
apiVersion: v1
kind: Namespace
metadata:
name: ingress-nginx
labels:
app: ingress-nginx
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: nginx-ingress-controller
namespace: ingress-nginx
labels:
app: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: nginx-ingress-controller
labels:
app: ingress-nginx
rules:
- apiGroups:
- ""
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
- namespaces
- services
verbs:
- get
- list
- watch
- apiGroups:
- "extensions"
- "networking.k8s.io"
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- events
verbs:
- create
- patch
- apiGroups:
- "extensions"
- "networking.k8s.io"
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- ""
resources:
- configmaps
verbs:
- create
- apiGroups:
- ""
resources:
- configmaps
resourceNames:
- "ingress-controller-leader-nginx"
verbs:
- get
- update
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: nginx-ingress-controller
labels:
app: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: nginx-ingress-controller
subjects:
- kind: ServiceAccount
name: nginx-ingress-controller
namespace: ingress-nginx
---
apiVersion: v1
kind: Service
metadata:
labels:
app: ingress-nginx
name: nginx-ingress-lb
namespace: ingress-nginx
spec:
# DaemonSet need:
# ----------------
type: ClusterIP
# ----------------
# Deployment need:
# ----------------
# type: NodePort
# ----------------
ports:
- name: http
port: 80
targetPort: 80
protocol: TCP
- name: https
port: 443
targetPort: 443
protocol: TCP
- name: metrics
port: 10254
protocol: TCP
targetPort: 10254
selector:
app: ingress-nginx
---
kind: ConfigMap
apiVersion: v1
metadata:
name: nginx-configuration
namespace: ingress-nginx
labels:
app: ingress-nginx
data:
keep-alive: "75"
keep-alive-requests: "100"
upstream-keepalive-connections: "10000"
upstream-keepalive-requests: "100"
upstream-keepalive-timeout: "60"
allow-backend-server-header: "true"
enable-underscores-in-headers: "true"
generate-request-id: "true"
http-redirect-code: "301"
ignore-invalid-headers: "true"
log-format-upstream: '{"@timestamp": "$time_iso8601","remote_addr": "$remote_addr","x-forward-for": "$proxy_add_x_forwarded_for","request_id": "$req_id","remote_user": "$remote_user","bytes_sent": $bytes_sent,"request_time": $request_time,"status": $status,"vhost": "$host","request_proto": "$server_protocol","path": "$uri","request_query": "$args","request_length": $request_length,"duration": $request_time,"method": "$request_method","http_referrer": "$http_referer","http_user_agent": "$http_user_agent","upstream-sever":"$proxy_upstream_name","proxy_alternative_upstream_name":"$proxy_alternative_upstream_name","upstream_addr":"$upstream_addr","upstream_response_length":$upstream_response_length,"upstream_response_time":$upstream_response_time,"upstream_status":$upstream_status}'
max-worker-connections: "65536"
worker-processes: "2"
proxy-body-size: 20m
proxy-connect-timeout: "10"
proxy_next_upstream: error timeout http_502
reuse-port: "true"
server-tokens: "false"
ssl-ciphers: ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
ssl-protocols: TLSv1 TLSv1.1 TLSv1.2
ssl-redirect: "false"
worker-cpu-affinity: auto
---
kind: ConfigMap
apiVersion: v1
metadata:
name: tcp-services
namespace: ingress-nginx
labels:
app: ingress-nginx
---
kind: ConfigMap
apiVersion: v1
metadata:
name: udp-services
namespace: ingress-nginx
labels:
app: ingress-nginx
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: nginx-ingress-controller
namespace: ingress-nginx
labels:
app: ingress-nginx
annotations:
component.version: "v0.30.0"
component.revision: "v1"
spec:
# Deployment need:
# ----------------
# replicas: 1
# ----------------
selector:
matchLabels:
app: ingress-nginx
template:
metadata:
labels:
app: ingress-nginx
annotations:
prometheus.io/port: "10254"
prometheus.io/scrape: "true"
scheduler.alpha.kubernetes.io/critical-pod: ""
spec:
# DaemonSet need:
# ----------------
hostNetwork: true
# ----------------
serviceAccountName: nginx-ingress-controller
priorityClassName: system-node-critical
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- podAffinityTerm:
labelSelector:
matchExpressions:
- key: app
operator: In
values:
- ingress-nginx
topologyKey: kubernetes.io/hostname
weight: 100
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: type
operator: NotIn
values:
- virtual-kubelet
containers:
- name: nginx-ingress-controller
image: registry.cn-beijing.aliyuncs.com/acs/aliyun-ingress-controller:v0.30.0.2-9597b3685-aliyun
args:
- /nginx-ingress-controller
- --configmap=$(POD_NAMESPACE)/nginx-configuration
- --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
- --udp-services-configmap=$(POD_NAMESPACE)/udp-services
- --publish-service=$(POD_NAMESPACE)/nginx-ingress-lb
- --annotations-prefix=nginx.ingress.kubernetes.io
- --enable-dynamic-certificates=true
- --v=2
securityContext:
allowPrivilegeEscalation: true
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
runAsUser: 101
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
ports:
- name: http
containerPort: 80
- name: https
containerPort: 443
livenessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 10
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 10
# resources:
# limits:
# cpu: "1"
# memory: 2Gi
# requests:
# cpu: "1"
# memory: 2Gi
volumeMounts:
- mountPath: /etc/localtime
name: localtime
readOnly: true
volumes:
- name: localtime
hostPath:
path: /etc/localtime
type: File
tolerations:
- operator: Exists
initContainers:
- command:
- /bin/sh
- -c
- |
mount -o remount rw /proc/sys
sysctl -w net.core.somaxconn=65535
sysctl -w net.ipv4.ip_local_port_range="1024 65535"
sysctl -w fs.file-max=1048576
sysctl -w fs.inotify.max_user_instances=16384
sysctl -w fs.inotify.max_user_watches=524288
sysctl -w fs.inotify.max_queued_events=16384
image: registry.cn-beijing.aliyuncs.com/acs/busybox:v1.29.2
imagePullPolicy: IfNotPresent
name: init-sysctl
securityContext:
privileged: true
procMount: Default
###etcd备份数据
cp etcdctl /usr/bin/
#查看etcd状态
ETCDCTL_API=3 etcdctl --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --endpoints=https://172.22.154.215:2379,https://172.22.154.216:2379,https://172.22.154.217:2379 endpoint health
备份数据
ETCDCTL_API=3 etcdctl --cacert=/opt/etcd/ssl/ca.pem --cert=/opt/etcd/ssl/server.pem --key=/opt/etcd/ssl/server-key.pem --endpoints=https://172.22.154.215:2379 snapshot save /data/etcd_backup_dir/etcd-snapshot-`date +%Y%m%d`.db
备份脚本
####为避免集群服务器崩溃建议将备份数据在其它服务器上也存储一份！
#!/usr/bin/env bash
date;
CACERT="/opt/etcd/ssl/ca.pem"
CERT="/opt/etcd/ssl/server.pem"
EKY="/opt/etcd/ssl/server-key.pem"
ENDPOINTS="172.22.154.215:2379"
ETCDCTL_API=3 etcdctl \
--cacert="${CACERT}" --cert="${CERT}" --key="${EKY}" \
--endpoints=${ENDPOINTS} \
snapshot save /data/etcd_backup_dir/etcd-snapshot-`date +%Y%m%d`.db
# 备份保留30天
find /data/etcd_backup_dir/ -name *.db -mtime +30 -exec rm -f {} \;
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