Kubernetes单节点部署二进制k8s群集
Kubernetes单节点部署二进制k8s群集
| master | 192.168.100.170 | kube-apiserver、kube-scheduler、controller-manager、etcd | 2G+4CPU |
| node1 | 192.168.100.180 | kube-apiserver、kube-scheduler、controller-manager、etcd | 2G+4CPU |
| node2 | 192.168.100.190 | kube-apiserver、kube-scheduler、controller-manager、etcd | 2G+4CPU |
| etcd | ca.pem,server.pem,server-key.pem |
| flannel | ca.pem,server.pem,server-key.pem |
| kube-apiserver | ca.pem,server.pem,server-key.pem |
| kubelet | ca.pem,ca-key.pem |
| kube-proxy | ca.pem,kube-proxy.pem,kube-proxy-key.pem |
| kubectl | ca.pem,admin-pem,admin-key.pem |
一: Etcd群集部署---------------------------------------------------------
hostnamectl set-hostaname master
hostnamectl set-hostaname node1
hostnamectl set-hostaname node2
iptables -F
setenforce 0
//master部署------------------------------
1.master主机创建k8s文件夹并上传etcd脚本,下载cffssl官方证书生成工具
mkdir k8s && cd k8s
//上传脚本etcd-cert.sh etcd.sh
ls
etcd-cert.sh etcd.sh
2.下载证书制作工具
k8s]
curl -L https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -o /usr/local/bin/cfssl
curl -L https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -o /usr/local/bin/cfssljson
curl -L https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -o /usr/local/bin/cfssl-certinfo
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson /usr/local/bin/cfssl-certinfo
bash cfssl.sh
ls /usr/local/bin/
cfssl cfssl-certinfo cfssljson
3.开始制作证书
k8s]
[[email protected] etcd-cert]
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"www": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
[[email protected] etcd-cert]
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing"
}
]
}
EOF
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
4.指定etcd三个节点之间的通信验证,注意要修改这里的ip
cat > server-csr.json <<EOF
{
"CN": "etcd",
"hosts": [
"192.168.100.170", "master地址"
"192.168.100.180", "node1地址"
"192.168.100.190" "node2地址"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server
[[email protected] etcd-cert]
ca-config.json ca-csr.json ca.pem server.csr server-key.pem
ca.csr ca-key.pem etcd-cert.sh server-csr.json server.pem
5.部署ETCD服务
k8s]
etcd-cert etcd-v3.3.10-linux-amd64.tar.gz
etcd.sh kubernetes-server-linux-amd64.tar.gz
etcd-v3.3.10-linux-amd64 flannel-v0.10.0-linux-amd64.tar.gz
k8s]
k8s]
Documentation etcd etcdctl README-etcdctl.md README.md READMEv2-etcdctl.md
k8s]
k8s]
[[email protected] k8s]
[[email protected] k8s]
[[email protected] ~]
6.拷贝证书及启动服务脚本取其他node节点
[[email protected] k8s]
[[email protected] k8s]
[[email protected] k8s]
[[email protected] k8s]
//node节点部署
7.node1
[[email protected] ~]
ETCD_NAME="etcd02" "此处修改为etcd02"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.100.180:2380" "修改为nodde2地址"
ETCD_LISTEN_CLIENT_URLS="https://192.168.100.180:2379" "修改为nodde2地址"
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.100.180:2380" "修改为nodde2地址"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.100.180:2379" "修改为nodde2地址"
ETCD_INITIAL_CLUSTER="etcd01=https://192.168.100.170:2380,etcd02=https://192.168.100.180:2380,etcd03=https://192.168.100.190:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
[[email protected] ssl]
[[email protected] ssl]
[[email protected] ssl]
8.node2
[[email protected] ~]
ETCD_NAME="etcd03" "此处修改为etcd03"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.100.190:2380" "修改为nodde3地址"
ETCD_LISTEN_CLIENT_URLS="https://192.168.100.190:2379" "修改为nodde3地址"
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.100.190:2380" "修改为nodde3地址"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.100.190:2379" "修改为nodde3地址"
ETCD_INITIAL_CLUSTER="etcd01=https://192.168.100.170:2380,etcd02=https://192.168.100.180:2380,etcd03=https://192.168.100.190:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
[[email protected] ssl]
[[email protected] ssl]
[[email protected] ssl]
9.检查etcd群集状态
[[email protected] etcd-cert]
member 257ab5cb19142f4b is healthy: got healthy result from https://192.168.100.180:2379
member 777f7eb10e389e47 is healthy: got healthy result from https://192.168.100.190:2379
member eac869b8bd29e072 is healthy: got healthy result from https://192.168.100.170:2379
cluster is healthy
'检查集群状态:注意相对路径'
//所有node节点部署docker引擎,详见docker安装脚本
//master服务器分配ETCD网络
1.master节点写入分配的子网段到ETCD中,供flannel使用
[[email protected] etcd-cert]
2.查看写入的信息
[[email protected] etcd-cert]
{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}
3.拷贝到所有node节点(只需要部署在node节点即可)
[[email protected] k8s]
[[email protected] k8s]
'//谁需要跑pod,谁就需要安装flannel网络'
//所有node节点操作解压
[[email protected] ~]
flanneld
mk-docker-opts.sh
README.md
1.创建k8s工作目录
[[email protected] ~]
[[email protected] ~]
2.编写服务脚本与
[[email protected] ~]
ETCD_ENDPOINTS=${1:-"http://127.0.0.1:2379"}
cat <<EOF >/opt/kubernetes/cfg/flanneld
FLANNEL_OPTIONS="--etcd-endpoints=${ETCD_ENDPOINTS} \
-etcd-cafile=/opt/etcd/ssl/ca.pem \
-etcd-certfile=/opt/etcd/ssl/server.pem \
-etcd-keyfile=/opt/etcd/ssl/server-key.pem"
EOF
cat <<EOF >/usr/lib/systemd/system/flanneld.service
[Unit]
Description=Flanneld overlay address etcd agent
After=network-online.target network.target
Before=docker.service
[Service]
Type=notify
EnvironmentFile=/opt/kubernetes/cfg/flanneld
ExecStart=/opt/kubernetes/bin/flanneld --ip-masq \$FLANNEL_OPTIONS
ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable flanneld
systemctl restart flanneld
EOF
3.开启flannel网络功能
[[email protected] ~]
4.配置docker连接flannel
[[email protected] ~]
Created symlink from /etc/systemd/system/multi-user.target.wants/flanneld.service to /usr/lib/systemd/system/flanneld.service.
5.配置docker连接flannel
[[email protected] ~]
[Service]
Type=notify
EnvironmentFile=/run/flannel/subnet.env "添加行"
ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS -H fd:// --containerd=/run/containerd/containerd.sock "添加$DOCKER_NETWORK_OPTIONS"
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
[[email protected] ~]# cat /run/flannel/subnet.env
DOCKER_OPT_BIP="--bip=172.17.42.1/24"
DOCKER_OPT_IPMASQ="--ip-masq=false"
DOCKER_OPT_MTU="--mtu=1450"
//说明:bip指定启动时的子网
DOCKER_NETWORK_OPTIONS=" --bip=172.17.42.1/24 --ip-masq=false --mtu=1450"
6.重启docker服务
[[email protected] ~]
[[email protected] ~]
7.查看flannel网络
[[email protected] ~]
[[email protected] ~]
flanneld
mk-docker-opts.sh
README.md
1.创建k8s工作目录
[[email protected] ~]
[[email protected] ~]
2.编写服务脚本与
[[email protected] ~]
ETCD_ENDPOINTS=${1:-"http://127.0.0.1:2379"}
cat <<EOF >/opt/kubernetes/cfg/flanneld
FLANNEL_OPTIONS="--etcd-endpoints=${ETCD_ENDPOINTS} \
-etcd-cafile=/opt/etcd/ssl/ca.pem \
-etcd-certfile=/opt/etcd/ssl/server.pem \
-etcd-keyfile=/opt/etcd/ssl/server-key.pem"
EOF
cat <<EOF >/usr/lib/systemd/system/flanneld.service
[Unit]
Description=Flanneld overlay address etcd agent
After=network-online.target network.target
Before=docker.service
[Service]
Type=notify
EnvironmentFile=/opt/kubernetes/cfg/flanneld
ExecStart=/opt/kubernetes/bin/flanneld --ip-masq \$FLANNEL_OPTIONS
ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable flanneld
systemctl restart flanneld
EOF
3.开启flannel网络功能
[[email protected] ~]
4.配置docker连接flannel
[[email protected] ~]
Created symlink from /etc/systemd/system/multi-user.target.wants/flanneld.service to /usr/lib/systemd/system/flanneld.service.
5.配置docker连接flannel
[[email protected] ~]
[Service]
Type=notify
EnvironmentFile=/run/flannel/subnet.env "添加行"
ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS -H fd:// --containerd=/run/containerd/containerd.sock "添加$DOCKER_NETWORK_OPTIONS"
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
[[email protected] ~]# cat /run/flannel/subnet.env
DOCKER_OPT_BIP="--bip=172.17.42.1/24"
DOCKER_OPT_IPMASQ="--ip-masq=false"
DOCKER_OPT_MTU="--mtu=1450"
//说明:bip指定启动时的子网
DOCKER_NETWORK_OPTIONS=" --bip=172.17.42.1/24 --ip-masq=false --mtu=1450"
6.重启docker服务
[[email protected] ~]
[[email protected] ~]
7.查看flannel网络
[[email protected] ~]
[[email protected] ~]
[[email protected] /]
[[email protected] /]
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450
inet 172.17.84.2 netmask 255.255.255.0 broadcast 172.17.84.255
ether 02:42:ac:11:54:02 txqueuelen 0 (Ethernet)
RX packets 18192 bytes 13930229 (13.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6179 bytes 337037 (329.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[[email protected] ~]
[[email protected] /]
[[email protected] /]
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450
inet 172.17.36.2 netmask 255.255.255.0 broadcast 172.17.84.255
ether 02:42:ac:11:54:02 txqueuelen 0 (Ethernet)
RX packets 18192 bytes 13930229 (13.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6179 bytes 337037 (329.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[[email protected] /]
[[email protected] /]
"容器相互能ping通就说明容器间能跨宿主机相互访问"
四: 部署master组件
//在master上操作,api-server生成证书
1、master节点操作,api-server生成证书
[[email protected] k8s]
[[email protected] k8s]
[[email protected] k8s]
[[email protected] k8s]
[[email protected] k8s-cert]
k8s-cert.sh
[[email protected] k8s-cert]
cat > ca-config.json <<EOF "ca的json证书"
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
cat > ca-csr.json <<EOF "ca的签名证书"
{
"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ca 证书,执行后会生成ca.pem和ca-key.pem"
cat > server-csr.json <<EOF
{
"CN": "kubernetes",
"hosts": [
"10.0.0.1", "Cloud vip地址,这里不用修改"
"127.0.0.1", "本地地址"
"192.168.100.170", "master1地址,这里生成证书,规划一下地址授权证书,方便后续多节点部署"
"192.168.100.160", "master2地址"
"192.168.100.100", "vip"
"192.168.100.150", "loadbalance(master)"
"192.168.100.140", "loadbalance(backup)"
"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", "名称,可以自定义"
"ST": "BeiJing", "名称,可以自定义"
"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
cat > admin-csr.json <<EOF "管理员签名"
{
"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
cat > kube-proxy-csr.json <<EOF "代理签名"
{
"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
2.制作证书
[[email protected] k8s-cert]
[[email protected] k8s-cert]
admin-key.pem ca-key.pem kube-proxy-key.pem server-key.pem
admin.pem ca.pem kube-proxy.pem server.pem
[[email protected] k8s-cert]
[[email protected] k8s-cert]
[[email protected] k8s]
apiserver.sh etcd-v3.3.10-linux-amd64 master.zip
controller-manager.sh etcd-v3.3.10-linux-amd64.tar.gz scheduler.sh
etcd-cert k8s-cert
etcd.sh kubernetes-server-linux-amd64.tar.gz
3、解压k8s服务器端压缩包
[[email protected] k8s]
4.复制服务器端关键命令到k8s工作目录中
[[email protected] k8s]
[[email protected] bin]
5、编辑令牌并绑定角色kubelet-bootstrap
[[email protected] k8s]
[[email protected] k8s]
0d8e1e148121fc25d8623239ae6cf7e0
[[email protected] k8s]
0d8e1e148121fc25d8623239ae6cf7e0,kubelet-bootstrap,10001,"system:kubelet-bootstrap"
6、开启apiserver,将数据存放在etcd集群中并检查kube状态
[[email protected] k8s]
Created symlink from /etc/systemd/system/multi-user.target.wants/kube-apiserver.service to /usr/lib/systemd/system/kube-apiserver.service.
[[email protected] k8s]
[[email protected] ~]
KUBE_APISERVER_OPTS="--logtostderr=true \
--v=4 \
--etcd-servers=https://192.168.100.170:2379,https://192.168.100.180:2379,https://192.168.100.190:2379 \
--bind-address=192.168.100.170 \
--secure-port=6443 \
--advertise-address=192.168.100.170 \
--allow-privileged=true \
--service-cluster-ip-range=10.0.0.0/24 \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction \
--authorization-mode=RBAC,Node \
--kubelet-https=true \
--enable-bootstrap-token-auth \
--token-auth-file=/opt/kubernetes/cfg/token.csv \
--service-node-port-range=30000-50000 \
--tls-cert-file=/opt/kubernetes/ssl/server.pem \
--tls-private-key-file=/opt/kubernetes/ssl/server-key.pem \
--client-ca-file=/opt/kubernetes/ssl/ca.pem \
--service-account-key-file=/opt/kubernetes/ssl/ca-key.pem \
--etcd-cafile=/opt/etcd/ssl/ca.pem \
--etcd-certfile=/opt/etcd/ssl/server.pem \
--etcd-keyfile=/opt/etcd/ssl/server-key.pem"
[[email protected] k8s]
tcp 0 0 192.168.100.170:6443 0.0.0.0:* LISTEN 69865/kube-apiserve
tcp 0 0 192.168.100.170:6443 192.168.100.170:53210 ESTABLISHED 69865/kube-apiserve
tcp 0 0 192.168.100.170:53210 192.168.100.170:6443 ESTABLISHED 69865/kube-apiserve
[[email protected] k8s]
tcp 0 0 127.0.0.1:8080 0.0.0.0:* LISTEN 69865/kube-apiserve
7、启动scheduler服务
[[email protected] k8s]
Created symlink from /etc/systemd/system/multi-user.target.wants/kube-scheduler.service to /usr/lib/systemd/system/kube-scheduler.service.
[[email protected] k8s]
postfix 68074 0.0 0.1 91732 4080 ? S 10:07 0:00 pickup -l -t unix -u
root 69865 14.4 8.0 401580 311244 ? Ssl 11:43 0:09
[[email protected] k8s]
8、启动controller-manager
[[email protected] k8s]
Created symlink from /etc/systemd/system/multi-user.target.wants/kube-controller-manager.service to /usr/lib/systemd/system/kube-controller-manager.service.
9、查看master节点状态
[[email protected] k8s]
NAME STATUS MESSAGE ERROR
controller-manager Healthy ok
scheduler Healthy ok
etcd-0 Healthy {"health":"true"}
etcd-2 Healthy {"health":"true"}
etcd-1 Healthy {"health":"true"}
[[email protected] bin]
[email protected]168.100.180's password:
kubelet 100% 168MB 74.8MB/s 00:02
kube-proxy 100% 48MB 97.6MB/s 00:00
[[email protected] bin]# scp kubelet kube-proxy [email protected]:/opt/kubernetes/bin/
[email protected]'s password:
kubelet 100% 168MB 101.4MB/s 00:01
kube-proxy 100% 48MB 102.3MB/s 00:00
//node节点部署
1、master节点上将kubectl和kube-proxy拷贝到node节点
[[email protected] bin]
[email protected]168.100.180's password:
kubelet 100% 168MB 74.8MB/s 00:02
kube-proxy 100% 48MB 97.6MB/s 00:00
[[email protected] bin]# scp kubelet kube-proxy [email protected]:/opt/kubernetes/bin/
[email protected]'s password:
kubelet 100% 168MB 101.4MB/s 00:01
kube-proxy 100% 48MB 102.3MB/s 00:00
2.nod01节点操作(复制node.zip到/root目录下再解压)
[[email protected] ~]
anaconda-ks.cfg flannel-v0.10.0-linux-amd64.tar.gz node.zip 公共 视频 文档 音乐
flannel.sh initial-setup-ks.cfg README.md 模板 图片 下载 桌面
//解压node.zip,获得kubelet.sh proxy.sh
[[email protected] ~]
3.在master上操作,创建kubeconfig目录
[[email protected] k8s]
[[email protected] k8s]
//拷贝kubeconfig.sh文件进行重命名
[[email protected] kubeconfig]
[[email protected] kubeconfig]
0d8e1e148121fc25d8623239ae6cf7e0,kubelet-bootstrap,10001,"system:kubelet-bootst"
[[email protected] kubeconfig]
APISERVER=$1
SSL_DIR=$2
export KUBE_APISERVER="https://$APISERVER:6443"
kubectl config set-cluster kubernetes \
--certificate-authority=$SSL_DIR/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=bootstrap.kubeconfig
kubectl config set-credentials kubelet-bootstrap \
--token=0d8e1e148121fc25d8623239ae6cf7e0 \ '//此token序列号就是之前/opt/kubernetes/cfg/token.csv 文件中使用的的'
--kubeconfig=bootstrap.kubeconfig
kubectl config set-context default \
--cluster=kubernetes \
--user=kubelet-bootstrap \
--kubeconfig=bootstrap.kubeconfig
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
kubectl config set-cluster kubernetes \
--certificate-authority=$SSL_DIR/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-proxy.kubeconfig
kubectl config set-credentials kube-proxy \
--client-certificate=$SSL_DIR/kube-proxy.pem \
--client-key=$SSL_DIR/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
[[email protected] kubeconfig]
[[email protected] kubeconfig]
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-0 Healthy {"health":"true"}
etcd-1 Healthy {"health":"true"}
etcd-2 Healthy {"health":"true"}
4、生成配置文件并拷贝到node节点
[[email protected] kubeconfig]
Cluster "kubernetes" set.
User "kubelet-bootstrap" set.
Context "default" created.
Switched to context "default".
Cluster "kubernetes" set.
User "kube-proxy" set.
Context "default" created.
User "kubelet-bootstrap" set.
Switched to context "default".
[[email protected] kubeconfig]
bootstrap.kubeconfig kubeconfig kube-proxy.kubeconfig
[[email protected] kubeconfig]
[email protected]168.100.180's password:
bootstrap.kubeconfig 100% 2169 1.4MB/s 00:00
kube-proxy.kubeconfig 100% 6275 5.8MB/s 00:00
[[email protected] kubeconfig]# scp bootstrap.kubeconfig kube-proxy.kubeconfig [email protected]:/opt/kubernetes/cfg/
[email protected]'s password:
bootstrap.kubeconfig 100% 2169 352.8KB/s 00:00
kube-proxy.kubeconfig 100% 6275 3.3MB/s 00:00
5.创建bootstrap角色赋予权限用于连接apiserver请求签名(关键)
[[email protected] kubeconfig]
clusterrolebinding.rbac.authorization.k8s.io/kubelet-bootstrap created
//在节点上操作
6、node01节点操作生成kubelet kubelet.config配置文件
[[email protected] ~]
Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
[[email protected] ~]
root 10206 0.0 0.6 391444 18372 ? Ssl 07:55 0:11 /opt/kubernetes/bin/flanneld --ip-masq --etcd-endpoints=https://192.168.100.170:2379,https://192.168.100.180:2379,https://192.168.100.190:2379 -etcd-cafile=/opt/etcd/ssl/ca.pem -etcd-certfile=/opt/etcd/ssl/server.pem -etcd-keyfile=/opt/etcd/ssl/server-key.pem
root 32918 3.2 1.5 405340 45420 ? Ssl 11:57 0:00 /opt/kubernetes/bin/kubelet --logtostderr=true --v=4 --hostname-override=192.168.100.180 --kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig --bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig --config=/opt/kubernetes/cfg/kubelet.config --cert-dir=/opt/kubernetes/ssl --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0
root 32952 0.0 0.0 112724 988 pts/0 S+ 11:57 0:00 grep --color=auto kube
7、master上检查到node01节点的请求,查看证书状态
[[email protected] kubeconfig]
NAME AGE REQUESTOR CONDITION
node-csr-lk45yzxFkiUhV8b36fmhmFsZdqtD8JUWV1Vkiq9w7Nw 30s kubelet-bootstrap Pending "(等待集群给该节点颁发证书)"
8、颁发证书,再次查看证书状态
[[email protected] kubeconfig]
certificatesigningrequest.certificates.k8s.io/node-csr-lk45yzxFkiUhV8b36fmhmFsZdqtD8JUWV1Vkiq9w7Nw approved "master进行授权允许加入群集"
[[email protected] kubeconfig]
NAME AGE REQUESTOR CONDITION
node-csr-lk45yzxFkiUhV8b36fmhmFsZdqtD8JUWV1Vkiq9w7Nw 6m19s kubelet-bootstrap Approved,Issued "(已经被允许加入群集)"
[[email protected] kubeconfig]
NAME AGE REQUESTOR CONDITION
node-csr-lk45yzxFkiUhV8b36fmhmFsZdqtD8JUWV1Vkiq9w7Nw 6m19s kubelet-bootstrap Approved,Issued
9、查看集群状态并启动proxy服务
[[email protected] kubeconfig]
NAME STATUS ROLES AGE VERSION
192.168.100.180 Ready <none> 31s v1.12.3
[[email protected] ~]
anaconda-ks.cfg flannel-v0.10.0-linux-amd64.tar.gz node.zip
docker-install.sh initial-setup-ks.cfg proxy.sh
flannel.sh kubelet.sh README.md
[[email protected] ~]
Created symlink from /etc/systemd/system/multi-user.target.wants/kube-proxy.service to /usr/lib/systemd/system/kube-proxy.service.
[[email protected] ~]
● kube-proxy.service - Kubernetes Proxy
Loaded: loaded (/usr/lib/systemd/system/kube-proxy.service; enabled; vendor preset: disabled)
Active: active (running) since 二 2020-09-29 12:04:50 CST; 9s ago
Main PID: 34171 (kube-proxy)
Tasks: 0
Memory: 8.2M
CGroup: /system.slice/kube-proxy.service
‣ 34171 /opt/kubernetes/bin/kube-proxy --logtostderr=true --v=4 -...
[[email protected] ~]
[[email protected] ~]
[email protected]168.100.190's 'password:
kubelet.service 100% 264 159.9KB/s 00:00
kube-proxy.service 100% 231 302.4KB/s 00:00
[[email protected] ~]
1、修改三个配置文件的IP地址
[[email protected] ~]
[[email protected] kubeconfig]
[[email protected] ssl]
kubelet-client-2020-09-29-12-03-29.pem kubelet.crt
kubelet-client-current.pem kubelet.key
[[email protected] ssl]
[[email protected] ssl]
[[email protected] ssl]
2、启动服务并查看状态
[[email protected] cfg]
KUBELET_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=192.168.100.190 \ "改成node2地址"
--kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \
--config=/opt/kubernetes/cfg/kubelet.config \
--cert-dir=/opt/kubernetes/ssl \
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
[[email protected] cfg]
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 192.168.100.190 "node2地址"
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS:
- 10.0.0.2
clusterDomain: cluster.local.
failSwapOn: false
authentication:
anonymous:
enabled: true
[[email protected] cfg]
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=192.168.100.190 \ "node2的地址"
--cluster-cidr=10.0.0.0/24 \
--proxy-mode=ipvs \
--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig"
[[email protected] cfg]
[[email protected] cfg]
Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
[[email protected] cfg]
[[email protected] cfg]
Created symlink from /etc/systemd/system/multi-user.target.wants/kube-proxy.service to /usr/lib/systemd/system/kube-proxy.service.
3.master上操作查看请求并同意node02证书
//在master上操作查看请求Pending
[[email protected] kubeconfig]
NAME AGE REQUESTOR CONDITION
node-csr-Q22FXrUtwbkKu5b0LQcMbbyXYMuCMkGKUyH0ME1x2ow 47s kubelet-bootstrap Pending
node-csr-lk45yzxFkiUhV8b36fmhmFsZdqtD8JUWV1Vkiq9w7Nw 12m kubelet-bootstrap Approved,Issued
[[email protected] kubeconfig]
NAME STATUS ROLES AGE VERSION
192.168.100.180 Ready <none> 6m26s v1.12.3
[[email protected] kubeconfig]
certificatesigningrequest.certificates.k8s.io/node-csr-Q22FXrUtwbkKu5b0LQcMbbyXYMuCMkGKUyH0ME1x2ow approved
"master查看群集中的节点"
[[email protected] kubeconfig]
NAME STATUS ROLES AGE VERSION
192.168.100.180 Ready <none> 8m52s v1.12.3
192.168.100.190 Ready <none> 43s v1.12.3