CentOS 使用二进制部署 Kubernetes 1.13集群
时间:2019-01-18
本文章向大家介绍CentOS 使用二进制部署 Kubernetes 1.13集群，主要包括CentOS 使用二进制部署 Kubernetes 1.13集群使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。
一、安装环境准备：
k8s安装包下载
链接：https://pan.baidu.com/s/1wO6T7byhaJYBuu2JlhZvkQ
提取码：pm9u
二、Kubernetes 安装及配置
1、初始化环境
1.1、设置关闭防火墙及SELINUX
systemctl stop firewalld && systemctl disable firewalld
setenforce 0
vi /etc/selinux/config
SELINUX=disabled
1.2、关闭Swap
swapoff -a && sysctl -w vm.swappiness=0
vi /etc/fstab
#UUID=7bff6243-324c-4587-b550-55dc34018ebf swap swap defaults 0 0
1.3、设置Docker所需参数
cat << EOF | tee /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
modprobe br_netfilter
sysctl -p /etc/sysctl.d/k8s.conf
1.4、安装 Docker
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
# 上面的yum源不行的话建议换阿里yum源
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum list docker-ce --showduplicates | sort -r
yum install docker-ce -y
systemctl start docker && systemctl enable docker
1.5、创建安装目录
mkdir /k8s/etcd/{bin,cfg,ssl} -p
mkdir /k8s/kubernetes/{bin,cfg,ssl} -p
1.6、安装及配置CFSSL
wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
chmod +x cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64
mv cfssl_linux-amd64 /usr/local/bin/cfssl
mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
mv cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo
1.7、创建认证证书
# 可以随便建个etcd目录,在目录里创建证书，后面用到的时候拷贝过去就好
# 创建 ETCD 证书
cat << EOF | tee ca-config.json
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"www": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
# 创建 ETCD CA 配置文件
cat << EOF | tee ca-csr.json
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Shenzhen",
"ST": "Shenzhen"
}
]
}
EOF
# 创建 ETCD Server 证书（注意更改host字段）
cat << EOF | tee server-csr.json
{
"CN": "etcd",
"hosts": [
"10.67.34.130",
"10.67.34.131",
"10.67.34.132"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Shenzhen",
"ST": "Shenzhen"
}
]
}
EOF
# 生成 ETCD CA 证书和私钥
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server
# 可以随便建个kubernetes目录,在目录里创建证书，后面用到的时候拷贝过去就好
# 创建 Kubernetes CA 证书
cat << EOF | tee ca-config.json
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
cat << EOF | tee ca-csr.json
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Shenzhen",
"ST": "Shenzhen",
"O": "k8s",
"OU": "System"
}
]
}
EOF
# 生成 kubernetes CA 证书和私钥
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
# 生成API_SERVER证书
cat << EOF | tee server-csr.json
{
"CN": "kubernetes",
"hosts": [
"10.0.0.1",
"127.0.0.1",
"10.67.34.130",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Shenzhen",
"ST": "Shenzhen",
"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
# 创建 Kubernetes Proxy 证书
cat << EOF | tee kube-proxy-csr.json
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Shenzhen",
"ST": "Shenzhen",
"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
1.8、 ssh-key认证
$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:FQjjiRDp8IKGT+UDM+GbQLBzF3DqDJ+pKnMIcHGyO/o root@qas-k8s-master01
The key's randomart image is:
+---[RSA 2048]----+
|o.==o o. .. |
|ooB+o+ o. . |
|B++@o o . |
|=X**o . |
|o=O. . S |
|..+ |
|oo . |
|* . |
|o+E |
+----[SHA256]-----+
$ ssh-copy-id 10.67.34.131
$ ssh-copy-id 10.67.34.132
2 、部署ETCD
# 解压安装文件
tar -xvf etcd-v3.3.10-linux-amd64.tar.gz
cd etcd-v3.3.10-linux-amd64/
cp etcd etcdctl /k8s/etcd/bin/
vim /k8s/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd01"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.67.34.130:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.67.34.130:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.67.34.130:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.67.34.130:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://10.67.34.130:2380,etcd02=https://10.67.34.131:2380,etcd03=https://10.67.34.132:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
# 创建 etcd的 systemd unit 文件
vim /usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
EnvironmentFile=/k8s/etcd/cfg/etcd
ExecStart=/k8s/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=/k8s/etcd/ssl/server.pem \
--key-file=/k8s/etcd/ssl/server-key.pem \
--peer-cert-file=/k8s/etcd/ssl/server.pem \
--peer-key-file=/k8s/etcd/ssl/server-key.pem \
--trusted-ca-file=/k8s/etcd/ssl/ca.pem \
--peer-trusted-ca-file=/k8s/etcd/ssl/ca.pem
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
# 拷贝证书文件
# cd etcd证书目录
cp ca*pem server*pem /k8s/etcd/ssl
# 将启动文件、配置文件拷贝到 节点1、节点2
cd /k8s/
scp -r etcd 10.67.34.131:/k8s/
scp -r etcd 10.67.34.132:/k8s/
scp /usr/lib/systemd/system/etcd.service 10.67.34.131:/usr/lib/systemd/system/etcd.service
scp /usr/lib/systemd/system/etcd.service 10.67.34.132:/usr/lib/systemd/system/etcd.service
#### !!!!!切记到node节点上改对应得参数
# 所有的机器启动ETCD服务
systemctl daemon-reload
systemctl enable etcd
systemctl start etcd
# 验证集群是否正常运行 切换到etcdctl对应的目录
./etcdctl \
--ca-file=/k8s/etcd/ssl/ca.pem \
--cert-file=/k8s/etcd/ssl/server.pem \
--key-file=/k8s/etcd/ssl/server-key.pem \
--endpoints="https://10.67.34.130:2379,\
https://10.67.34.131:2379,\
https://10.67.34.132:2379" cluster-health
member 5db3ea816863435 is healthy: got healthy result from https://172.16.8.102:2379
member 991b5845cecb31b is healthy: got healthy result from https://172.16.8.101:2379
member c67ee2780d64a0d4 is healthy: got healthy result from https://172.16.8.100:2379
cluster is healthy
3、部署Flannel网络
# 向 etcd 写入集群 Pod 网段信息
cd /k8s/etcd/ssl/
/k8s/etcd/bin/etcdctl \
--ca-file=ca.pem --cert-file=server.pem \
--key-file=server-key.pem \
--endpoints="https://10.67.34.130:2379,\
https://10.67.34.131:2379,https://10.67.34.132:2379" \
set /coreos.com/network/config '{ "Network": "172.18.0.0/16", "Backend": {"Type": "vxlan"}}'
# 注意：
1.flanneld 当前版本 (v0.10.0) 不支持 etcd v3，故使用 etcd v2 API 写入配置 key 和网段数据；
2.！！！写入的 Pod 网段 ${CLUSTER_CIDR} 必须是 /16 段地址，必须与 kube-controller-manager 的 –cluster-cidr 参数值一致；
# 解压安装
tar -xvf flannel-v0.10.0-linux-amd64.tar.gz
mv flanneld mk-docker-opts.sh /k8s/kubernetes/bin/
# 配置Flannel
vim /k8s/kubernetes/cfg/flanneld
FLANNEL_OPTIONS="--etcd-endpoints=https://10.67.34.130:2379,https://10.67.34.131:2379,https://10.67.34.132:2379 -etcd-cafile=/k8s/etcd/ssl/ca.pem -etcd-certfile=/k8s/etcd/ssl/server.pem -etcd-keyfile=/k8s/etcd/ssl/server-key.pem"
# 创建 flanneld 的 systemd unit 文件
vim /usr/lib/systemd/system/flanneld.service
[Unit]
Description=Flanneld overlay address etcd agent
After=network-online.target network.target
Before=docker.service
[Service]
Type=notify
EnvironmentFile=/k8s/kubernetes/cfg/flanneld
ExecStart=/k8s/kubernetes/bin/flanneld --ip-masq $FLANNEL_OPTIONS
ExecStartPost=/k8s/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env
Restart=on-failure
[Install]
WantedBy=multi-user.target
# 配置Docker启动指定子网段
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
# 将flanneld systemd unit 文件到所有节点
cd /k8s/
scp -r kubernetes 10.67.34.131:/k8s/
scp -r kubernetes 10.67.34.132:/k8s/
scp /k8s/kubernetes/cfg/flanneld 10.67.34.131:/k8s/kubernetes/cfg/flanneld
scp /k8s/kubernetes/cfg/flanneld 10.67.34.132:/k8s/kubernetes/cfg/flanneld
scp /usr/lib/systemd/system/docker.service 10.67.34.131:/usr/lib/systemd/system/docker.service
scp /usr/lib/systemd/system/docker.service 10.67.34.132:/usr/lib/systemd/system/docker.service
scp /usr/lib/systemd/system/flanneld.service 10.67.34.131:/usr/lib/systemd/system/flanneld.service
scp /usr/lib/systemd/system/flanneld.service 10.67.34.132:/usr/lib/systemd/system/flanneld.service
# 启动服务
systemctl daemon-reload
systemctl start flanneld
systemctl enable flanneld
systemctl restart docker
# 查看是否生效
ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 08:00:27:e3:57:a4 brd ff:ff:ff:ff:ff:ff
inet 10.67.34.130/24 brd 172.16.8.255 scope global noprefixroute eth0
valid_lft forever preferred_lft forever
inet6 fe80::a00:27ff:fee3:57a4/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:cf:5d:a7:af brd ff:ff:ff:ff:ff:ff
inet 172.18.25.1/24 brd 172.18.25.255 scope global docker0
valid_lft forever preferred_lft forever
4: flannel.1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UNKNOWN group default
link/ether 0e:bf:c5:3b:4d:59 brd ff:ff:ff:ff:ff:ff
inet 172.18.25.0/32 scope global flannel.1
valid_lft forever preferred_lft forever
inet6 fe80::cbf:c5ff:fe3b:4d59/64 scope link
valid_lft forever preferred_lft forever
4、部署 master 节点
# 将二进制文件解压拷贝到master 节点
tar -xvf kubernetes-server-linux-amd64.tar.gz
cd kubernetes/server/bin/
cp kube-scheduler kube-apiserver kube-controller-manager kubectl /k8s/kubernetes/bin/
# 拷贝认证
# cd到kubernetes证书目录
cp *pem /k8s/kubernetes/ssl/
## 部署 kube-apiserver 组件
# 创建 TLS Bootstrapping Token
$ head -c 16 /dev/urandom | od -An -t x | tr -d ' '
2366a641f656a0a025abb4aabda4511b
vim /k8s/kubernetes/cfg/token.csv
2366a641f656a0a025abb4aabda4511b,kubelet-bootstrap,10001,"system:kubelet-bootstrap"
# 创建apiserver配置文件
vim /k8s/kubernetes/cfg/kube-apiserver
KUBE_APISERVER_OPTS="--logtostderr=true \
--v=4 \
--etcd-servers=https://10.67.34.130:2379,https://10.67.34.131:2379,https://10.67.34.132:2379 \
--bind-address=10.67.34.130 \
--secure-port=6443 \
--advertise-address=10.67.34.130 \
--allow-privileged=true \
--service-cluster-ip-range=10.0.0.0/24 \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota,NodeRestriction \
--authorization-mode=RBAC,Node \
--enable-bootstrap-token-auth \
--token-auth-file=/k8s/kubernetes/cfg/token.csv \
--service-node-port-range=30000-50000 \
--tls-cert-file=/k8s/kubernetes/ssl/server.pem \
--tls-private-key-file=/k8s/kubernetes/ssl/server-key.pem \
--client-ca-file=/k8s/kubernetes/ssl/ca.pem \
--service-account-key-file=/k8s/kubernetes/ssl/ca-key.pem \
--etcd-cafile=/k8s/etcd/ssl/ca.pem \
--etcd-certfile=/k8s/etcd/ssl/server.pem \
--etcd-keyfile=/k8s/etcd/ssl/server-key.pem"
# 创建 kube-apiserver systemd unit 文件
vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
[Service]
EnvironmentFile=-/k8s/kubernetes/cfg/kube-apiserver
ExecStart=/k8s/kubernetes/bin/kube-apiserver $KUBE_APISERVER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
# 启动服务
systemctl daemon-reload
systemctl enable kube-apiserver
systemctl restart kube-apiserver
# 查看apiserver是否运行
ps -ef |grep kube-apiserver
## 部署kube-scheduler
# 创建kube-scheduler配置文件
vim /k8s/kubernetes/cfg/kube-scheduler
KUBE_SCHEDULER_OPTS="--logtostderr=true --v=4 --master=127.0.0.1:8080 --leader-elect"
# 创建kube-scheduler systemd unit 文件
vim /usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
[Service]
EnvironmentFile=-/k8s/kubernetes/cfg/kube-scheduler
ExecStart=/k8s/kubernetes/bin/kube-scheduler $KUBE_SCHEDULER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
# 启动服务
systemctl daemon-reload
systemctl enable kube-scheduler.service
systemctl restart kube-scheduler.service
# 查看kube-scheduler是否运行
ps -ef |grep kube-scheduler
systemctl status kube-scheduler.service
## 部署kube-controller-manager
# 创建kube-controller-manager配置文件
vim /k8s/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=/k8s/kubernetes/ssl/ca.pem \
--cluster-signing-key-file=/k8s/kubernetes/ssl/ca-key.pem \
--root-ca-file=/k8s/kubernetes/ssl/ca.pem \
--service-account-private-key-file=/k8s/kubernetes/ssl/ca-key.pem"
# 创建kube-controller-manager systemd unit 文件
vim /usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
[Service]
EnvironmentFile=-/k8s/kubernetes/cfg/kube-controller-manager
ExecStart=/k8s/kubernetes/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
# 启动服务
systemctl daemon-reload
systemctl enable kube-controller-manager
systemctl restart kube-controller-manager
# 查看kube-controller-manager是否运行
systemctl status kube-controller-manager
ps -ef |grep kube-controller-manager
# 将可执行文件路/k8s/kubernetes/ 添加到 PATH 变量中
vim /etc/profile
PATH=/k8s/kubernetes/bin:$PATH:$HOME/bin
source /etc/profile
# 查看master集群状态
$ kubectl get cs,nodes
NAME STATUS MESSAGE ERROR
componentstatus/scheduler Healthy ok
componentstatus/etcd-2 Healthy {"health":"true"}
componentstatus/etcd-1 Healthy {"health":"true"}
componentstatus/etcd-0 Healthy {"health":"true"}
componentstatus/controller-manager Healthy ok
5、部署node 节点
# 将kubelet 二进制文件拷贝node节点
cp kubelet kube-proxy /k8s/kubernetes/bin/
scp kubelet kube-proxy 10.67.34.131:/k8s/kubernetes/bin/
scp kubelet kube-proxy 10.67.34.132:/k8s/kubernetes/bin/
# 创建 kubelet bootstrap kubeconfig 文件
# cd 到kubernetes证书目录，在目录下创建environment.sh
vim environment.sh
-----------------------------------------------------------------------------start
# 创建kubelet bootstrapping kubeconfig
BOOTSTRAP_TOKEN=2366a641f656a0a025abb4aabda4511b
KUBE_APISERVER="https://10.67.34.130:6443"
# 设置集群参数
kubectl config set-cluster kubernetes \
--certificate-authority=./ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=bootstrap.kubeconfig
# 设置客户端认证参数
kubectl config set-credentials kubelet-bootstrap \
--token=${BOOTSTRAP_TOKEN} \
--kubeconfig=bootstrap.kubeconfig
# 设置上下文参数
kubectl config set-context default \
--cluster=kubernetes \
--user=kubelet-bootstrap \
--kubeconfig=bootstrap.kubeconfig
# 设置默认上下文
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
#----------------------
# 创建kube-proxy kubeconfig文件
kubectl config set-cluster kubernetes \
--certificate-authority=./ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-proxy.kubeconfig
kubectl config set-credentials kube-proxy \
--client-certificate=./kube-proxy.pem \
--client-key=./kube-proxy-key.pem \
--embed-certs=true \
--kubeconfig=kube-proxy.kubeconfig
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-proxy \
--kubeconfig=kube-proxy.kubeconfig
kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig
------------------------------------------------------------------------end
# 给environment.sh添加执行权限
chmod +x environment.sh
# 创建kubelet bootstrapping kubeconfig
./environment.sh
# 将bootstrap kubeconfig kube-proxy.kubeconfig 文件拷贝到所有 nodes节点
cp bootstrap.kubeconfig kube-proxy.kubeconfig /k8s/kubernetes/cfg/
scp bootstrap.kubeconfig kube-proxy.kubeconfig 10.67.34.131:/k8s/kubernetes/cfg/
scp bootstrap.kubeconfig kube-proxy.kubeconfig 10.67.34.132:/k8s/kubernetes/cfg/
# 创建 kubelet 参数配置模板文件：
vim /k8s/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 10.67.34.130
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS: ["10.0.0.2"]
clusterDomain: cluster.local.
failSwapOn: false
authentication:
anonymous:
enabled: true
# 创建kubelet配置文件
vim /k8s/kubernetes/cfg/kubelet
KUBELET_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.67.34.130 \
--kubeconfig=/k8s/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/k8s/kubernetes/cfg/bootstrap.kubeconfig \
--config=/k8s/kubernetes/cfg/kubelet.config \
--cert-dir=/k8s/kubernetes/ssl \
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
# 创建kubelet systemd unit 文件
vim /usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
After=docker.service
Requires=docker.service
[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kubelet
ExecStart=/k8s/kubernetes/bin/kubelet $KUBELET_OPTS
Restart=on-failure
KillMode=process
[Install]
WantedBy=multi-user.target
# 将kubelet-bootstrap用户绑定到系统集群角色
kubectl create clusterrolebinding kubelet-bootstrap \
--clusterrole=system:node-bootstrapper \
--user=kubelet-bootstrap
# 创建kubelet 参数配置文件拷贝到所有 nodes节点
### 注意到各node节点更改相应配置
scp /k8s/kubernetes/cfg/kubelet.config 10.67.34.131:/k8s/kubernetes/cfg/
scp /k8s/kubernetes/cfg/kubelet.config 10.67.34.132:/k8s/kubernetes/cfg/
scp /k8s/kubernetes/cfg/kubelet 10.67.34.131:/k8s/kubernetes/cfg/
scp /k8s/kubernetes/cfg/kubelet 10.67.34.132:/k8s/kubernetes/cfg/
scp /usr/lib/systemd/system/kubelet.service 10.67.34.131:/usr/lib/systemd/system/
scp /usr/lib/systemd/system/kubelet.service 10.67.34.132:/usr/lib/systemd/system/
# 启动服务
systemctl daemon-reload
systemctl enable kubelet
systemctl restart kubelet
## 部署 kube-proxy 组件
# 创建 kube-proxy 配置文件
vim /k8s/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.67.34.130 \
--cluster-cidr=10.0.0.0/24 \
--kubeconfig=/k8s/kubernetes/cfg/kube-proxy.kubeconfig"
# 创建kube-proxy systemd unit 文件
vim /usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Proxy
After=network.target
[Service]
EnvironmentFile=-/k8s/kubernetes/cfg/kube-proxy
ExecStart=/k8s/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.target
# 启动服务
systemctl daemon-reload
systemctl enable kube-proxy
systemctl restart kube-proxy
## approve kubelet CSR 请求
# 查看 CSR 列表：
$ kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-An1VRgJ7FEMMF_uyy6iPjyF5ahuLx6tJMbk2SMthwLs 39m kubelet-bootstrap Pending
node-csr-dWPIyP_vD1w5gBS4iTZ6V5SJwbrdMx05YyybmbW3U5s 5m5s kubelet-bootstrap Pending
$ kubectl certificate approve node-csr-dWPIyP_vD1w5gBS4iTZ6V5SJwbrdMx05YyybmbW3U5s
certificatesigningrequest.certificates.k8s.io/node-csr-dWPIyP_vD1w5gBS4iTZ6V5SJwbrdMx05YyybmbW3U5s approved
$ kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-An1VRgJ7FEMMF_uyy6iPjyF5ahuLx6tJMbk2SMthwLs 41m kubelet-bootstrap Approved,Issued
node-csr-dWPIyP_vD1w5gBS4iTZ6V5SJwbrdMx05YyybmbW3U5s 7m32s kubelet-bootstrap Approved,Issued
# 查看集群状态
$ kubectl get node,cs
NAME STATUS ROLES AGE VERSION
node/10.67.34.130 Ready master 137m v1.13.0
node/10.67.34.131 Ready node 114m v1.13.0
node/10.67.34.132 Ready node 93m v1.13.0
NAME STATUS MESSAGE ERROR
componentstatus/controller-manager Healthy ok
componentstatus/scheduler Healthy ok
componentstatus/etcd-0 Healthy {"health":"true"}
componentstatus/etcd-1 Healthy {"health":"true"}
componentstatus/etcd-2 Healthy {"health":"true"}
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