kubernetes之hyperkube方式安装文档-部署k8s集群(四)
系统
[root@kubernetes-build etcd]# cat /etc/redhat-release
CentOS Linux release 7.4.1708 (Core) 主机
10.39.47.28 slave-28
10.39.47.23 slave-23
10.39.47.27 master-27 设置主机名
hostnamectl set-hostname master-27
hostnamectl set-hostname slave-23
hostnamectl set-hostname slave-28安装docker
yum install docker -y
swapoff -a
setenforce 0
[root@slave-28 ~]# cat /etc/docker/daemon.json
{"registry-mirrors": ["http://579fe187.m.daocloud.io","https://pee6w651.mirror.aliyuncs.com"],"insecure-registries": ["10.39.47.22"]}
systemctl start docker注意 需要在每台机器上docker login,
[root@slave-28 ~]# docker login 10.39.47.22
Username: admin
Password:
Login Succeeded
制作证书
安装 cfssl
mkdir -p /opt/local/cfssl
cd /opt/local/cfssl
wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
mv cfssl_linux-amd64 cfssl
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
mv cfssljson_linux-amd64 cfssljson
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
mv cfssl-certinfo_linux-amd64 cfssl-certinfo
chmod +x *
[root@master-27 cfssl]# ls -l
total 18808
-rwxr-xr-x 1 root root 10376657 Mar 30 2016 cfssl
-rwxr-xr-x 1 root root 6595195 Mar 30 2016 cfssl-certinfo
-rwxr-xr-x 1 root root 2277873 Mar 30 2016 cfssljson创建 CA 证书配置
mkdir /opt/ssl
cd /opt/ssl# config.json 文件
vi config.json
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"kubernetes": {
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
],
"expiry": "87600h"
}
}
}
}# csr.json 文件
vi csr.json
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "ShenZhen",
"L": "ShenZhen",
"O": "k8s",
"OU": "System"
}
]
}生成 CA 证书和私钥
cd /opt/ssl/
/opt/local/cfssl/cfssl gencert -initca csr.json | /opt/local/cfssl/cfssljson -bare ca
[root@master-27 ssl]# /opt/local/cfssl/cfssl gencert -initca csr.json | /opt/local/cfssl/cfssljson -bare ca
2018/06/16 15:00:33 [INFO] generating a new CA key and certificate from CSR
2018/06/16 15:00:33 [INFO] generate received request
2018/06/16 15:00:33 [INFO] received CSR
2018/06/16 15:00:33 [INFO] generating key: rsa-2048
2018/06/16 15:00:33 [INFO] encoded CSR
2018/06/16 15:00:33 [INFO] signed certificate with serial number 159485179627734853801933465778297599203045299990
[root@master-27 ssl]# ls -l
total 20
-rw-r--r-- 1 root root 1005 Jun 16 15:00 ca.csr
-rw------- 1 root root 1679 Jun 16 15:00 ca-key.pem
-rw-r--r-- 1 root root 1363 Jun 16 15:00 ca.pem
-rw-r--r-- 1 root root 292 Jun 16 14:59 config.json
-rw-r--r-- 1 root root 210 Jun 16 15:00 csr.json分发证书
mkdir -p /etc/kubernetes/ssl/
[root@master-27 ssl]# cp * /etc/kubernetes/ssl/
[root@master-27 ssl]# ls /etc/kubernetes/ssl
ca.csr ca-key.pem ca.pem config.json csr.json
[root@master-27 ssl]# scp * [email protected]:/etc/kubernetes/ssl/
Warning: Permanently added '10.39.47.28' (ECDSA) to the list of known hosts.
root@10.39.47.28's password:
ca.csr 100% 1005 2.5MB/s 00:00
ca-key.pem 100% 1679 6.1MB/s 00:00
ca.pem 100% 1363 5.4MB/s 00:00
config.json 100% 292 1.4MB/s 00:00
csr.json 100% 210 1.0MB/s 00:00
[root@master-27 ssl]# scp * [email protected]:/etc/kubernetes/ssl/
Warning: Permanently added '10.39.47.23' (ECDSA) to the list of known hosts.
[email protected]'s password:
ca.csr 100% 1005 2.1MB/s 00:00
ca-key.pem 100% 1679 5.0MB/s 00:00
ca.pem 100% 1363 4.8MB/s 00:00
config.json 100% 292 1.2MB/s 00:00
csr.json 生成etcd集群的证书
cd /opt/ssl/
vi etcd-csr.json
{
"CN": "etcd",
"hosts": [
"127.0.0.1",
"10.39.47.28",
"10.39.47.27",
"10.39.47.23"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "ShenZhen",
"L": "ShenZhen",
"O": "k8s",
"OU": "System"
}
]
}# 生成 etcd 密钥
/opt/local/cfssl/cfssl gencert -ca=/opt/ssl/ca.pem \
-ca-key=/opt/ssl/ca-key.pem \
-config=/opt/ssl/config.json \
-profile=kubernetes etcd-csr.json | /opt/local/cfssl/cfssljson -bare etcd
[root@master-27 ssl]# ls -l etcd*
-rw-r--r-- 1 root root 1066 Jun 16 15:07 etcd.csr
-rw-r--r-- 1 root root 295 Jun 16 15:07 etcd-csr.json
-rw------- 1 root root 1675 Jun 16 15:07 etcd-key.pem
-rw-r--r-- 1 root root 1440 Jun 16 15:07 etcd.pem
cp etcd* /etc/kubernetes/ssl/
分发证书
[root@master-27 ssl]# scp * [email protected]:/etc/kubernetes/ssl/
Warning: Permanently added '10.39.47.23' (ECDSA) to the list of known hosts.
[email protected]'s password:
ca.csr 100% 1005 3.2MB/s 00:00
ca-key.pem 100% 1679 6.0MB/s 00:00
ca.pem 100% 1363 5.6MB/s 00:00
config.json 100% 292 26.0KB/s 00:00
csr.json 100% 210 893.4KB/s 00:00
etcd.csr 100% 1066 4.0MB/s 00:00
etcd-csr.json 100% 295 1.3MB/s 00:00
etcd-key.pem 100% 1675 7.0MB/s 00:00
etcd.pem 100% 1440 6.7MB/s 00:00
[root@master-27 ssl]# scp * [email protected]:/etc/kubernetes/ssl/
Warning: Permanently added '10.39.47.28' (ECDSA) to the list of known hosts.
[email protected]'s password:
ca.csr 100% 1005 2.4MB/s 00:00
ca-key.pem 100% 1679 5.5MB/s 00:00
ca.pem 100% 1363 4.9MB/s 00:00
config.json 100% 292 1.3MB/s 00:00
csr.json 100% 210 1.0MB/s 00:00
etcd.csr 100% 1066 4.5MB/s 00:00
etcd-csr.json 100% 295 1.3MB/s 00:00
etcd-key.pem 100% 1675 7.1MB/s 00:00
etcd.pem 100% 1440 6.3MB/s 00:00创建 admin 证书
kubectl 与 kube-apiserver 的安全端口通信，需要为安全通信提供 TLS 证书和秘钥。
cd /opt/ssl/
vi admin-csr.json
{
"CN": "admin",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "ShenZhen",
"L": "ShenZhen",
"O": "system:masters",
"OU": "System"
}
]
}# 生成 admin 证书和私钥
cd /opt/ssl/
/opt/local/cfssl/cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem \
-ca-key=/etc/kubernetes/ssl/ca-key.pem \
-config=/opt/ssl/config.json \
-profile=kubernetes admin-csr.json | /opt/local/cfssl/cfssljson -bare admin
# 查看生成
[root@master-27 ssl]# ls -l
total 52
-rw-r--r-- 1 root root 1013 Jun 16 16:23 admin.csr
-rw-r--r-- 1 root root 231 Jun 16 16:22 admin-csr.json
-rw------- 1 root root 1675 Jun 16 16:23 admin-key.pem
-rw-r--r-- 1 root root 1407 Jun 16 16:23 admin.pem
-rw-r--r-- 1 root root 1005 Jun 16 15:00 ca.csr
-rw------- 1 root root 1679 Jun 16 15:00 ca-key.pem
-rw-r--r-- 1 root root 1363 Jun 16 15:00 ca.pem
-rw-r--r-- 1 root root 292 Jun 16 14:59 config.json
-rw-r--r-- 1 root root 210 Jun 16 15:00 csr.json
-rw-r--r-- 1 root root 1066 Jun 16 15:07 etcd.csr
-rw-r--r-- 1 root root 295 Jun 16 15:07 etcd-csr.json
-rw------- 1 root root 1675 Jun 16 15:07 etcd-key.pem
-rw-r--r-- 1 root root 1440 Jun 16 15:07 etcd.pem
cp admin*.pem /etc/kubernetes/ssl/配置 kubectl kubeconfig 文件
scp kubelet kubectl [email protected]:/root
# 配置 kubernetes 集群
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/ssl/ca.pem \
--embed-certs=true \
--server=https://10.39.47.27:6443
# 配置 客户端认证
kubectl config set-credentials admin \
--client-certificate=/etc/kubernetes/ssl/admin.pem \
--embed-certs=true \
--client-key=/etc/kubernetes/ssl/admin-key.pem
kubectl config set-context kubernetes \
--cluster=kubernetes \
--user=admin
kubectl config use-context kubernetes创建 kubernetes 证书
cd /opt/ssl
vi kubernetes-csr.json
{
"CN": "kubernetes",
"hosts": [
"127.0.0.1",
"10.39.47.27",
"10.39.47.23",
"10.39.47.28",
"10.0.0.1",
"10.254.0.1",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "ShenZhen",
"L": "ShenZhen",
"O": "k8s",
"OU": "System"
}
]
}
/opt/local/cfssl/cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem \
-ca-key=/etc/kubernetes/ssl/ca-key.pem \
-config=/opt/ssl/config.json \
-profile=kubernetes kubernetes-csr.json | /opt/local/cfssl/cfssljson -bare kubernetes
[root@master-27 ssl]# ls -l kubernetes*
-rw-r--r-- 1 root root 1261 Jun 16 16:32 kubernetes.csr
-rw-r--r-- 1 root root 475 Jun 16 16:31 kubernetes-csr.json
-rw------- 1 root root 1679 Jun 16 16:32 kubernetes-key.pem
-rw-r--r-- 1 root root 1635 Jun 16 16:32 kubernetes.pem
# 拷贝到目录
cp kubernetes*.pem /etc/kubernetes/ssl/制作etcd.json
cd /etc/kubernetes
mkdir manifests
cd manifests/
[root@master-27 manifests]# cat etcd.json
{
"kind": "Pod",
"apiVersion": "v1",
"metadata": {
"name": "etcd",
"namespace": "kube-system",
"labels": {
"component": "etcd",
"tier": "control-plane"
}
},
"spec": {
"volumes": [
{
"name": "certs",
"hostPath": {
"path": "/etc/ssl/certs"
}
},
{
"name": "etcd",
"hostPath": {
"path": "/var/lib/etcd"
}
},
{
"name": "pki",
"hostPath": {
"path": "/etc/kubernetes"
}
}
],
"containers": [
{
"name": "etcd",
"image": "10.39.47.22/qinzhao/etcd-amd64:3.1.12",
"command": [
"etcd",
"--name",
"etcd-10.39.47.27",
"--data-dir=/var/etcd/data",
"--trusted-ca-file",
"/etc/kubernetes/pki/ca.pem",
"--key-file",
"/etc/kubernetes/pki/apiserver-key.pem",
"--cert-file",
"/etc/kubernetes/pki/apiserver.pem",
"--client-cert-auth",
"--peer-trusted-ca-file",
"/etc/kubernetes/pki/ca.pem",
"--peer-key-file",
"/etc/kubernetes/pki/apiserver-key.pem",
"--peer-cert-file",
"/etc/kubernetes/pki/apiserver.pem",
"--peer-client-cert-auth",
"--initial-advertise-peer-urls=https://10.39.47.27:2380",
"--listen-peer-urls=https://10.39.47.27:2380",
"--listen-client-urls=https://10.39.47.27:2379,http://127.0.0.1:2379",
"--advertise-client-urls=https://10.39.47.27:2379,http://127.0.0.1:2379",
"--initial-cluster-token=etcd-cluster-1",
"--initial-cluster",
"etcd-10.39.47.27=https://10.39.47.27:2380",
"--initial-cluster-state",
"new"
],
"resources": {
"requests": {
"cpu": "200m"
}
},
"volumeMounts": [
{
"name": "certs",
"mountPath": "/etc/ssl/certs"
},
{
"name": "etcd",
"mountPath": "/var/etcd"
},
{
"name": "pki",
"readOnly": true,
"mountPath": "/etc/kubernetes/"
}
],
"livenessProbe": {
"httpGet": {
"path": "/health",
"port": 2379,
"host": "127.0.0.1"
}
},
"securityContext": {
"seLinuxOptions": {
"type": "unconfined_t"
}
}
}
],
"hostNetwork": true
}
}kube-apiserver.json
[root@master-27 qinzhao]# cat /etc/kubernetes/manifests/kube-apiserver.json
{
"kind": "Pod",
"apiVersion": "v1",
"metadata": {
"name": "kube-apiserver",
"namespace": "kube-system",
"creationTimestamp": null,
"labels": {
"component": "kube-apiserver",
"tier": "control-plane"
}
},
"spec": {
"volumes": [
{
"name": "certs",
"hostPath": {
"path": "/etc/ssl/certs"
}
},
{
"name": "pki",
"hostPath": {
"path": "/etc/kubernetes"
}
}
],
"containers": [
{
"name": "kube-apiserver",
"image": "10.39.47.22/qinzhao/hyperkube-amd64:v1.7.6",
"imagePullPolicy": "Always",
"command": [
"/apiserver",
"--admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,ResourceQuota",
"--advertise-address=10.39.47.27",
"--allow-privileged=true",
"--apiserver-count=3",
"--audit-log-maxage=30",
"--audit-log-maxbackup=3",
"--audit-log-maxsize=100",
"--audit-log-path=/var/lib/audit.log",
"--bind-address=10.39.47.27",
"--client-ca-file=/etc/kubernetes/ssl/ca.pem",
"--enable-swagger-ui=true",
"--etcd-servers=https://10.39.47.27:2379",
"--etcd-cafile=/etc/kubernetes/pki/ca.pem",
"--etcd-certfile=/etc/kubernetes/pki/apiserver.pem",
"--etcd-keyfile=/etc/kubernetes/pki/apiserver-key.pem",
"--event-ttl=1h",
"--kubelet-https=true",
"--insecure-bind-address=0.0.0.0",
"--service-account-key-file=/etc/kubernetes/ssl/ca.pem",
"--service-cluster-ip-range=10.12.0.0/12",
"--service-node-port-range=30000-32000",
"--tls-cert-file=/etc/kubernetes/ssl/apiserver.pem",
"--tls-private-key-file=/etc/kubernetes/ssl/apiserver-key.pem",
"--experimental-bootstrap-token-auth",
"--token-auth-file=/etc/kubernetes/pki/tokens.csv",
"--v=2",
"--requestheader-username-headers=X-Remote-User --requestheader-group-headers=X-Remote-Group --requestheader-extra-headers-prefix=X-Remote-Extra- --requestheader-client-ca-file=/var/run/kubernetes/request-header-ca.crt --requestheader-allowed-names=system:auth-proxy --proxy-client-cert-file=/var/run/kubernetes/client-auth-proxy.crt --proxy-client-key-file=/var/run/kubernetes/client-auth-proxy.key",
"--runtime-config=autoscaling/v2alpha1=true,settings.k8s.io/v1alpha1=true,batch/v2alpha1=true",
"--storage-backend=etcd2",
"--storage-media-type=application/json",
"--log-dir=/var/log/kuernetes",
"--logtostderr=false"
],
"resources": {
"requests": {
"cpu": "250m"
}
},
"volumeMounts": [
{
"name": "certs",
"mountPath": "/etc/ssl/certs"
},
{
"name": "pki",
"readOnly": true,
"mountPath": "/etc/kubernetes/"
}
],
"livenessProbe": {
"httpGet": {
"path": "/healthz",
"port": 8080,
"host": "127.0.0.1"
}
}
}
],
"hostNetwork": true
}
}kube-controller-manager.json
[root@master-27 qinzhao]# cat /etc/kubernetes/manifests/kube-controller-manager.json
{
"kind": "Pod",
"apiVersion": "v1",
"metadata": {
"name": "kube-controller-manager",
"namespace": "kube-system",
"labels": {
"component": "kube-controller-manager",
"tier": "control-plane"
}
},
"spec": {
"volumes": [
{
"name": "certs",
"hostPath": {
"path": "/etc/ssl/certs"
}
},
{
"name": "pki",
"hostPath": {
"path": "/etc/kubernetes"
}
},
{
"name": "plugin",
"hostPath": {
"path": "/usr/libexec/kubernetes/kubelet-plugins"
}
},
{
"name": "qingcloud",
"hostPath": {
"path": "/etc/qingcloud"
}
}
],
"containers": [
{
"name": "kube-controller-manager",
"image": "10.39.47.22/qinzhao/hyperkube-amd64:v1.7.6",
"imagePullPolicy": "Always",
"command": [
"/controller-manager",
"--address=127.0.0.1",
"--master=http://127.0.0.1:8080",
"--allocate-node-cidrs=false",
"--service-cluster-ip-range=10.254.0.0/16",
"--cluster-name=kubernetes",
"--cluster-signing-cert-file=/etc/kubernetes/ssl/ca.pem",
"--cluster-signing-key-file=/etc/kubernetes/ssl/ca-key.pem",
"--service-account-private-key-file=/etc/kubernetes/ssl/ca-key.pem",
"--root-ca-file=/etc/kubernetes/ssl/ca.pem",
"--leader-elect=true",
"--horizontal-pod-autoscaler-use-rest-clients",
"--horizontal-pod-autoscaler-sync-period=30s",
"--v=10"
],
"resources": {
"requests": {
"cpu": "200m"
}
},
"volumeMounts": [
{
"name": "certs",
"mountPath": "/etc/ssl/certs"
},
{
"name": "pki",
"readOnly": true,
"mountPath": "/etc/kubernetes/"
},
{
"name": "plugin",
"mountPath": "/usr/libexec/kubernetes/kubelet-plugins"
},
{
"name": "qingcloud",
"readOnly": true,
"mountPath": "/etc/qingcloud"
}
],
"livenessProbe": {
"httpGet": {
"path": "/healthz",
"port": 10252,
"host": "127.0.0.1"
}
}
}
],
"hostNetwork": true
}
}kube-scheduler.json
[root@master-27 qinzhao]# cat /etc/kubernetes/manifests/kube-scheduler.json
{
"kind": "Pod",
"apiVersion": "v1",
"metadata": {
"name": "kube-scheduler",
"namespace": "kube-system",
"labels": {
"component": "kube-scheduler",
"tier": "control-plane"
}
},
"spec": {
"containers": [
{
"name": "kube-scheduler",
"image": "10.39.47.22/qinzhao/hyperkube-amd64:v1.7.6",
"imagePullPolicy": "Always",
"command": [
"/scheduler",
"--address=127.0.0.1",
"--master=http://127.0.0.1:8080",
"--leader-elect=true",
"--v=2"
],
"resources": {
"requests": {
"cpu": "100m"
}
},
"livenessProbe": {
"httpGet": {
"path": "/healthz",
"port": 10251,
"host": "127.0.0.1"
}
}
}
],
"hostNetwork": true
}
}
安装kubelet
复制kubernetes之hyperkube方式安装文档-代码编译(一)编译好的二进制文件kubelet kubectl到各个节点上
[root@kubernetes-build amd64]# scp kube* [email protected]:/root/qinzhao/bin
The authenticity of host '10.39.47.27 (10.39.47.27)' can't be established.
ECDSA key fingerprint is SHA256:6hz+fc5OlstnoBGjq/LRass6lYCb5WQtpxqhHs5udRI.
ECDSA key fingerprint is MD5:f2:33:a9:eb:18:a7:c1:dd:5b:24:74:8f:46:4c:6f:8f.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.39.47.27' (ECDSA) to the list of known hosts.
root@10.39.47.27's password:
kubeadm 100% 149MB 1.2MB/s 02:09
kube-aggregator 100% 54MB 1.1MB/s 00:48
kube-apiserver 100% 213MB 1.2MB/s 02:58
kube-controller-manager 100% 140MB 1.2MB/s 01:56
kubectl 100% 52MB 1.2MB/s 00:42
kubelet 100% 146MB 1.2MB/s 02:00
kubemark 100% 147MB 1.2MB/s 02:03
kube-proxy 100% 49MB 1.2MB/s 00:41
kube-scheduler 100% 47MB 1.2MB/s 00:38 然后把kubelet各自分发到其他节点上
先启动master-27主节点
创建kubelet的工作目录,要不然kubelet会起不来
mkdir /var/lib/kubelet编辑/etc/systemd/system/kubelet.service文件,内容如下
[root@slave-28 ~]# cat /etc/systemd/system/kubelet.service
[Unit]
Description=kubernetes Kubelet
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service
[Service]
WorkingDirectory=/var/lib/kubelet
ExecStart=/usr/bin/kubelet \
--address=10.39.47.28 \
--hostname-override=slave-28 \
--pod-infra-container-image=10.39.47.22/qinzhao/pause-amd64:3.0 \
--kubeconfig=/etc/kubernetes/kubelet.conf \
--bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig \
--require-kubeconfig \
--cert-dir=/etc/kubernetes/pki \
--cluster-dns=10.0.0.10 \
--cluster-domain=cluster.local \
--hairpin-mode promiscuous-bridge \
--allow-privileged=true \
--serialize-image-pulls=false \
--logtostderr=true \
--cgroup-driver=systemd \
--network-plugin=cni \
--pod-manifest-path=/etc/kubernetes/manifests \
--kube-reserved cpu=500m,memory=512m \
--image-gc-high-threshold=85 --image-gc-low-threshold=70 \
--v=2 \
--enable-controller-attach-detach=true --volume-plugin-dir=/usr/libexec/kubernetes/kubelet-plugins/volume/exec/
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
systemctl daemon-reload
systemctl enable kubelet创建kubelet.conf文件(主节点需要手动生成),因为kube-apiserver是由kubelet拉起服务的，kubelet 启动时需要向kube-apiserver注册，但是kube-apiserver还没起来，将会如下错误
un 16 19:16:18 master-27 kubelet[6371]: E0616 19:16:18.571653 6371 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:461: Failed to list *v1.Node: Get https://127.0.0.1:6443/api/v1/nodes?fieldSelector=metadata.name%3Dmaster-27&limit=500&resourceVersion=0: dial tcp 127.0.0.1:6443: getsockopt: connection refused
Jun 16 19:16:18 master-27 kubelet[6371]: E0616 19:16:18.697980 6371 event.go:209] Unable to write event: 'Post https://127.0.0.1:6443/api/v1/namespaces/default/events: dial tcp 127.0.0.1:6443: getsockopt: connection refused' (may retry after sleeping)
Jun 16 19:16:19 master-27 kubelet[6371]: E0616 19:16:19.570461 6371 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://127.0.0.1:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dmaster-27&limit=500&resourceVersion=0: dial tcp 127.0.0.1:6443: getsockopt: connection refused
touch /etc/kubernetes/kubelet.conf配置kubelet kubeconfig 文件
# 生成 token
[root@master-01 ssl]# head -c 16 /dev/urandom | od -An -t x | tr -d ' '
89faf1c2d78a7e923e87bb5787cabd02
# 配置集群
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/ssl/ca.pem \
--embed-certs=true \
--server=https://10.39.47.27:6443 \
--kubeconfig=bootstrap.kubeconfig
# 配置客户端认证
kubectl config set-credentials kubelet-bootstrap \
--token=89faf1c2d78a7e923e87bb5787cabd02 \
--kubeconfig=bootstrap.kubeconfig
# 配置关联
kubectl config set-context default \
--cluster=kubernetes \
--user=kubelet-bootstrap \
--kubeconfig=bootstrap.kubeconfig
# 配置默认关联
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
mv bootstrap.kubeconfig /etc/kubernetes/启动kubelet服务
systemctl start kubelet
systemctl status kubelet查看服务启动情况
[root@master-27 kubernetes]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9d2dd5aeae48 10.39.47.22/qinzhao/hyperkube-amd64@sha256:c022ededf3ee769a907c4010f71b2c2d32a2a84c497e306f36fa5e6b581ff462 "/apiserver --enab..." About an hour ago Up About an hour k8s_kube-apiserver_kube-apiserver-master-27_kube-system_7a8cafad6e479e260008119a48d91f5d_6
6b3a0a8a246e 10.39.47.22/qinzhao/pause-amd64:3.0 "/pause" About an hour ago Up About an hour k8s_POD_kube-apiserver-master-27_kube-system_7a8cafad6e479e260008119a48d91f5d_0
fbd0dd7b50de d9c0194e0cb1 "etcd --name etcd-..." About an hour ago Up About an hour k8s_etcd_etcd-master-27_kube-system_fb3755d7349ae96f320fea3cea8b5f9e_0
ed29623eb9ec 10.39.47.22/qinzhao/pause-amd64:3.0 "/pause" About an hour ago Up About an hour k8s_POD_etcd-master-27_kube-system_fb3755d7349ae96f320fea3cea8b5f9e_0
6813b0915588 10.39.47.22/qinzhao/hyperkube-amd64@sha256:c022ededf3ee769a907c4010f71b2c2d32a2a84c497e306f36fa5e6b581ff462 "/controller-manag..." About an hour ago Up About an hour k8s_kube-controller-manager_kube-controller-manager-master-27_kube-system_3aaa2763216b7b6557b8afbc3bac98d1_0
bd945c7a5f6b 10.39.47.22/qinzhao/hyperkube-amd64@sha256:c022ededf3ee769a907c4010f71b2c2d32a2a84c497e306f36fa5e6b581ff462 "/scheduler --addr..." About an hour ago Up About an hour k8s_kube-scheduler_kube-scheduler-master-27_kube-system_ea5d437ff6ebd29303ac695b7e540a82_0
324cd989b7ac 10.39.47.22/qinzhao/pause-amd64:3.0 "/pause" About an hour ago Up About an hour k8s_POD_kube-controller-manager-master-27_kube-system_3aaa2763216b7b6557b8afbc3bac98d1_0
24bf0f3d9836 10.39.47.22/qinzhao/pause-amd64:3.0 "/pause" About an hour ago Up About an hour k8s_POD_kube-scheduler-master-27_kube-system_ea5d437ff6ebd29303ac695b7e540a82_0
[root@master-27 manifests]# kubectl get cs
NAME STATUS MESSAGE ERROR
controller-manager Healthy ok
scheduler Healthy ok
etcd-0 Healthy {"health": "true"} 先创建认证请求，要不然会出错
# 先创建认证请求
# user 为 master 中 token.csv 文件里配置的用户
# 只需创建一次就可以
kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
Jun 16 20:36:29 master-27 kubelet[21712]: I0616 20:36:29.539163 21712 bootstrap.go:58] Using bootstrap kubeconfig to generate TLS client cert, key and kubeconfig file
Jun 16 20:36:29 master-27 kubelet[21712]: F0616 20:36:29.564948 21712 server.go:233] failed to run Kubelet: cannot create certificate signing request: certificatesigningrequests.certificates.k8s.io is forbidden: User "kubelet-bootstrap" cannot create certificatesigningrequests.certificates.k8s.io at the cluster scope配置 TLS 认证
[root@master-27 pki]# kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-5NhRqipcqz-ZghMznROHjWI5NfckR3tLVX9-kqy4WV0 5m kubelet-bootstrap Pending
[root@master-27 pki]# kubectl certificate approve node-csr-5NhRqipcqz-ZghMznROHjWI5NfckR3tLVX9-kqy4WV0
certificatesigningrequest.certificates.k8s.io "node-csr-5NhRqipcqz-ZghMznROHjWI5NfckR3tLVX9-kqy4WV0" approved
[root@master-27 pki]# kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-5NhRqipcqz-ZghMznROHjWI5NfckR3tLVX9-kqy4WV0 7m kubelet-bootstrap Approved,Issued查看节点
[root@master-27 kubernetes]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
master-27 Ready 45m v1.10.4 节点正常，kube-apiserver启动成功之后要手动删除文件/etc/kubernetes/kubelet.conf，然后重启kubelet,让kubelet向kube-apiserver注册,之后会自动生成kubelet的证书以及kubelet.conf文件，证书在这个目录下/etc/kubernetes/pki
[root@master-27 ~]# ls -l /etc/kubernetes/pki/kubelet*
-rw-r--r-- 1 root root 1046 Jun 16 20:43 /etc/kubernetes/pki/kubelet-client.crt
-rw------- 1 root root 227 Jun 16 20:36 /etc/kubernetes/pki/kubelet-client.key
-rw-r--r-- 1 root root 2173 Jun 16 17:51 /etc/kubernetes/pki/kubelet.crt
-rw------- 1 root root 1675 Jun 16 17:51 /etc/kubernetes/pki/kubelet.key配置slave-23节点
mkdir /var/lib/kubelet
[root@slave-23 ~]# cat /etc/systemd/system/kubelet.service
[Unit]
Description=kubernetes Kubelet
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service
[Service]
WorkingDirectory=/var/lib/kubelet
ExecStart=/usr/bin/kubelet \
--address=10.39.47.23 \
--hostname-override=slave-23 \
--pod-infra-container-image=10.39.47.22/qinzhao/pause-amd64:3.0 \
--kubeconfig=/etc/kubernetes/kubelet.conf \
--bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig \
--cert-dir=/etc/kubernetes/pki \
--cluster-dns=10.0.0.10 \
--cluster-domain=cluster.local \
--hairpin-mode promiscuous-bridge \
--allow-privileged=true \
--serialize-image-pulls=false \
--logtostderr=true \
--cgroup-driver=systemd \
--pod-manifest-path=/etc/kubernetes/manifests \
--kube-reserved cpu=500m,memory=512m \
--image-gc-high-threshold=85 --image-gc-low-threshold=70 \
--v=2 \
--enable-controller-attach-detach=true --volume-plugin-dir=/usr/libexec/kubernetes/kubelet-plugins/volume/exec/
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
swapoff -a
systemctl daemon-reload
systemctl enable kubelet
systemctl start kubelet
systemctl status kubelet配置TSL启动
[root@master-27 manifests]# kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-5NhRqipcqz-ZghMznROHjWI5NfckR3tLVX9-kqy4WV0 1h kubelet-bootstrap Approved,Issued
node-csr-Zpr-vPcNNjdmsBQCRf1RNfj-QLwaqcGEIIpnOWtVyE0 30s kubelet-bootstrap Pending[root@master-27 manifests]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
master-23 Ready <none> 13s v1.7.6
slave-23 Ready <none> 57m v1.7.6slave-28 节点也是一样的操作方法，这里就不讲了
[root@master-27 qinzhao]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
master-27 Ready <none> 48m v1.7.6
slave-23 Ready <none> 28m v1.7.6
slave-28 Ready <none> 39m v1.7.6部署kube-proxy
kube-proxy.yaml文件内容
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
labels:
component: kube-proxy
k8s-app: kube-proxy
kubernetes.io/cluster-service: "true"
name: kube-proxy
tier: node
name: kube-proxy
namespace: kube-system
spec:
selector:
matchLabels:
component: kube-proxy
k8s-app: kube-proxy
kubernetes.io/cluster-service: "true"
name: kube-proxy
tier: node
template:
metadata:
annotations:
scheduler.alpha.kubernetes.io/affinity: '{"nodeAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":{"nodeSelectorTerms":[{"matchExpressions":[{"key":"beta.kubernetes.io/arch","operator":"In","values":["amd64"]}]}]}}}'
scheduler.alpha.kubernetes.io/tolerations: '[{"key":"dedicated","value":"master","effect":"NoSchedule"}]'
labels:
component: kube-proxy
k8s-app: kube-proxy
kubernetes.io/cluster-service: "true"
name: kube-proxy
tier: node
spec:
containers:
- command:
- /proxy
- --cluster-cidr=192.168.0.0/16
- --kubeconfig=/run/kubeconfig
- --logtostderr=true
- --proxy-mode=iptables
- --v=2
image: 10.39.47.22/qinzhao/hyperkube-amd64:v1.7.6
imagePullPolicy: IfNotPresent
name: kube-proxy
securityContext:
privileged: true
volumeMounts:
- mountPath: /var/run/dbus
name: dbus
- mountPath: /run/kubeconfig
name: kubeconfig
- mountPath: /etc/kubernetes/pki
name: pki
dnsPolicy: ClusterFirst
hostNetwork: true
restartPolicy: Always
volumes:
- hostPath:
path: /etc/kubernetes/kubelet.conf
name: kubeconfig
- hostPath:
path: /var/run/dbus
name: dbus
- hostPath:
path: /etc/kubernetes/pki
name: pki
updateStrategy:
type: OnDelete配置 kube-proxy
创建 kube-proxy 证书
cd /opt/ssl
vi kube-proxy-csr.json
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "ShenZhen",
"L": "ShenZhen",
"O": "k8s",
"OU": "System"
}
]
}生成 kube-proxy 证书和私钥
/opt/local/cfssl/cfssl gencert -ca=/etc/kubernetes/ssl/ca.pem \
-ca-key=/etc/kubernetes/ssl/ca-key.pem \
-config=/opt/ssl/config.json \
-profile=kubernetes kube-proxy-csr.json | /opt/local/cfssl/cfssljson -bare kube-proxy
# 查看生成
ls kube-proxy*
kube-proxy.csr kube-proxy-csr.json kube-proxy-key.pem kube-proxy.pem
# 拷贝到目录
cp kube-proxy*.pem /etc/kubernetes/ssl/创建 kube-proxy kubeconfig 文件
# 配置集群
kubectl config set-cluster kubernetes \
--certificate-authority=/etc/kubernetes/ssl/ca.pem \
--embed-certs=true \
--server=https://10.39.47.27:6443 \
--kubeconfig=kube-proxy.kubeconfig
# 配置客户端认证
kubectl config set-credentials kube-proxy \
--client-certificate=/etc/kubernetes/ssl/kube-proxy.pem \
--client-key=/etc/kubernetes/ssl/kube-proxy-key.pem \
--embed-certs=true \
--kubeconfig=kube-proxy.kubeconfig
# 配置关联
kubectl config set-context default \
--cluster=kubernetes \
--user=kube-proxy \
--kubeconfig=kube-proxy.kubeconfig
# 配置默认关联
kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig
# 拷贝到目录
mv kube-proxy.kubeconfig /etc/kubernetes/
最后分配到各个节点上即可
创建proxy
[root@master-27 qinzhao]# pwd
/root/qinzhao
[root@master-27 qinzhao]# kubectl create -f kube-proxy.yaml
daemonset.extensions "kube-proxy" created
[root@master-27 qinzhao]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
etcd-master-27 1/1 Running 0 13h
kube-apiserver-master-27 1/1 Running 6 13h
kube-controller-manager-master-27 1/1 Running 0 13h
kube-proxy-lwl4p 1/1 Running 0 10s
kube-proxy-tjzgb 1/1 Running 0 10s
kube-proxy-xtjjd 1/1 Running 0 10s
kube-scheduler-master-27 1/1 Running 0 13h部署calico
# 下载 yaml 文件
wget http://docs.projectcalico.org/v2.6/getting-started/kubernetes/installation/hosted/calico.yaml
wget http://docs.projectcalico.org/v2.6/getting-started/kubernetes/installation/rbac.yaml
# 下载 镜像
# 国外镜像 有墙
quay.io/calico/node:v2.6.0
quay.io/calico/cni:v1.11.0
quay.io/calico/kube-controllers:v1.0.0
配置 calico
# 注意修改如下选项:
etcd_endpoints: "https://10.39.47.27:2379"
etcd_ca: "/calico-secrets/etcd-ca"
etcd_cert: "/calico-secrets/etcd-cert"
etcd_key: "/calico-secrets/etcd-key"
# 这里面要写入 base64 的信息
data:
etcd-key: (cat /etc/kubernetes/ssl/etcd-key.pem | base64 | tr -d '\n')
etcd-cert: (cat /etc/kubernetes/ssl/etcd.pem | base64 | tr -d '\n')
etcd-ca: (cat /etc/kubernetes/ssl/ca.pem | base64 | tr -d '\n')
- name: CALICO_IPV4POOL_CIDR
value: "10.233.0.0/16"导入 yaml 文件
[root@master-27 calico]# kubectl create -f .
configmap "calico-config" created
secret "calico-etcd-secrets" created
daemonset.extensions "calico-node" created
deployment.extensions "calico-kube-controllers" created
deployment.extensions "calico-policy-controller" created
serviceaccount "calico-kube-controllers" created
serviceaccount "calico-node" created
clusterrole.rbac.authorization.k8s.io "calico-kube-controllers" created
clusterrolebinding.rbac.authorization.k8s.io "calico-kube-controllers" created
clusterrole.rbac.authorization.k8s.io "calico-node" created
获取结果
[root@master-27 calico]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-6c857c57bd-nwk9n 1/1 Running 0 1m
calico-node-qmqk7 2/2 Running 0 1m
calico-node-qzw9h 2/2 Running 0 1m
calico-node-sxn77 2/2 Running 0 1m部署kube-dns
下载kube-dns yaml文件
[root@master-27 dns]# cat configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
labels:
addonmanager.kubernetes.io/mode: EnsureExists
name: kube-dns
namespace: kube-system
[root@master-27 dns]# cat configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
labels:
addonmanager.kubernetes.io/mode: EnsureExists
name: kube-dns
namespace: kube-system
[root@master-27 dns]# cat dns_dep.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "3"
generation: 3
labels:
addonmanager.kubernetes.io/mode: Reconcile
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
name: kube-dns
namespace: kube-system
spec:
replicas: 1
selector:
matchLabels:
k8s-app: kube-dns
strategy:
rollingUpdate:
maxSurge: 10%
maxUnavailable: 0
type: RollingUpdate
template:
metadata:
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ""
creationTimestamp: null
labels:
k8s-app: kube-dns
spec:
containers:
- args:
- --domain=cluster.local
- --dns-port=10053
- --config-dir=/kube-dns-config
- --v=5
env:
- name: PROMETHEUS_PORT
value: "10055"
image: 10.39.47.27/qinzhao/k8s-dns-kube-dns-amd64:1.14.4
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 5
httpGet:
path: /healthcheck/kubedns
port: 10054
scheme: HTTP
initialDelaySeconds: 60
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
name: kubedns
ports:
- containerPort: 10053
name: dns-local
protocol: UDP
- containerPort: 10053
name: dns-tcp-local
protocol: TCP
- containerPort: 10055
name: metrics
protocol: TCP
readinessProbe:
failureThreshold: 3
httpGet:
path: /readiness
port: 8081
scheme: HTTP
initialDelaySeconds: 3
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
resources:
limits:
memory: 170Mi
requests:
cpu: 100m
memory: 70Mi
terminationMessagePolicy: File
volumeMounts:
- mountPath: /kube-dns-config
name: kube-dns-config
- args:
- -v=5
- -logtostderr
- -configDir=/etc/k8s/dns/dnsmasq-nanny
- -restartDnsmasq=true
- --
- -k
- -N
- --cache-size=1000
- --log-facility=-
- --server=/cluster.local/127.0.0.1#10053
- --server=/in-addr.arpa/127.0.0.1#10053
- --server=/ip6.arpa/127.0.0.1#10053
image: 10.39.47.27/qinzhao/k8s-dns-dnsmasq-nanny-amd64:1.14.4
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 5
httpGet:
path: /healthcheck/dnsmasq
port: 10054
scheme: HTTP
initialDelaySeconds: 60
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
name: dnsmasq
ports:
- containerPort: 53
name: dns
protocol: UDP
- containerPort: 53
name: dns-tcp
protocol: TCP
resources:
requests:
cpu: 150m
memory: 20Mi
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /etc/k8s/dns/dnsmasq-nanny
name: kube-dns-config
- args:
- --v=5
- --logtostderr
- --probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.cluster.local,5,A
- --probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.cluster.local,5,A
image: 10.39.47.27/qinzhao/k8s-dns-sidecar-amd64:1.14.4
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 5
httpGet:
path: /metrics
port: 10054
scheme: HTTP
initialDelaySeconds: 60
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
name: sidecar
ports:
- containerPort: 10054
name: metrics
protocol: TCP
resources:
requests:
cpu: 10m
memory: 20Mi
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: Default
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
tolerations:
- key: CriticalAddonsOnly
operator: Exists
volumes:
- configMap:
defaultMode: 420
name: kube-dns
optional: true
name: kube-dns-config
[root@master-27 dns]# cat kube-dns_svc.yaml
apiVersion: v1
kind: Service
metadata:
labels:
addonmanager.kubernetes.io/mode: Reconcile
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
kubernetes.io/name: KubeDNS
name: kube-dns
namespace: kube-system
spec:
clusterIP: 10.0.0.10
ports:
- name: dns
port: 53
protocol: UDP
targetPort: 53
- name: dns-tcp
port: 53
protocol: TCP
targetPort: 53
selector:
k8s-app: kube-dns
sessionAffinity: None
type: ClusterIP
status:
loadBalancer: {}
部署dns
[root@master-27 dns]# kubectl create -f .
configmap "kube-dns" created
deployment.extensions "kube-dns" created
service "kube-dns" created部署dns结果
[root@master-27 dns]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-3794750602-lm8j7 1/1 Running 0 4m
calico-node-5379p 2/2 Running 0 4m
calico-node-9mvwg 2/2 Running 0 4m
calico-node-glsf7 2/2 Running 0 4m
etcd-master-27 1/1 Running 0 38m
kube-apiserver-master-27 1/1 Running 0 38m
kube-controller-manager-master-27 1/1 Running 0 38m
kube-dns-2744242050-wtcwj 3/3 Running 0 2m
kube-proxy-bbhst 1/1 Running 0 7m
kube-proxy-czhn1 1/1 Running 0 7m
kube-proxy-t79rc 1/1 Running 0 7m
kube-scheduler-master-27 1/1 Running 0 38m到此,k8s集群搭建完成
验证k8s集群
部署dashboard
下载 yaml 文件
[root@master-27 dashboard]# cat dashboard-controller.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kubernetes-dashboard
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
containers:
- name: kubernetes-dashboard
image: 10.39.47.22/qinzhao/kubernetes-dashboard-amd64:v1.6.1
resources:
# keep request = limit to keep this container in guaranteed class
limits:
cpu: 100m
memory: 300Mi
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 9090
livenessProbe:
httpGet:
path: /
port: 9090
initialDelaySeconds: 30
timeoutSeconds: 30
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
[root@master-27 dashboard]# cat dashboard-service.yaml
apiVersion: v1
kind: Service
metadata:
name: kubernetes-dashboard
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
selector:
k8s-app: kubernetes-dashboard
ports:
- port: 80
targetPort: 9090
部署dashboard
[root@master-27 dashboard]# kubectl create -f .
deployment.extensions "kubernetes-dashboard" created
service "kubernetes-dashboard" created查看结果
[root@master-27 dashboard]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-3794750602-lm8j7 1/1 Running 0 34m
calico-node-5379p 2/2 Running 0 34m
calico-node-9mvwg 2/2 Running 0 34m
calico-node-glsf7 2/2 Running 0 34m
etcd-master-27 1/1 Running 0 1h
kube-apiserver-master-27 1/1 Running 0 1h
kube-controller-manager-master-27 1/1 Running 0 1h
kube-dns-2744242050-wtcwj 3/3 Running 0 32m
kube-proxy-bbhst 1/1 Running 0 36m
kube-proxy-czhn1 1/1 Running 0 36m
kube-proxy-t79rc 1/1 Running 0 36m
kube-scheduler-master-27 1/1 Running 0 1h
kubernetes-dashboard-774090368-3bspz 1/1 Running 0 19s访问dash,参考Accessing-Dashboard—1.7.X-and-above
编辑dash的server,把ClusterIP改成NodePort
kubectl -n kube-system edit service kubernetes-dashboardroot@master-27 dashboard]# kubectl get svc -n kube-system
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kube-dns ClusterIP 10.0.0.10 <none> 53/UDP,53/TCP 35m
kubernetes-dashboard NodePort 10.1.60.214 <none> 80:31315/TCP 3m
访问masterip:31315,我这里是https://10.39.47.27:31315/
部署服务验证
[root@master-27 ~]# cat nginxyaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx-dm
spec:
replicas: 2
template:
metadata:
labels:
name: nginx
spec:
containers:
- name: nginx
image: nginx:alpine
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: nginx-svc
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
selector:
name: nginx
[root@master-27 ~]# kubectl get all
NAME READY STATUS RESTARTS AGE
pod/nginx-dm-2214564181-grz2k 1/1 Running 0 58m
pod/nginx-dm-2214564181-s3r63 1/1 Running 0 58m
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deployment.extensions/nginx-dm 2 2 2 2 6h
NAME DESIRED CURRENT READY AGE
replicaset.extensions/nginx-dm-2214564181 2 2 2 6h
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deployment.apps/nginx-dm 2 2 2 2 6h访问nginx 服务
[root@master-27 ~]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 2d
nginx-svc ClusterIP 10.6.118.7 <none> 80/TCP 6h
[root@master-27 ~]# curl 10.6.118.7
<html>
<head>
<title>Welcome to nginx!title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
style>
head>
<body>
<h1>Welcome to nginx!h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.orga>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.coma>.p>
<p><em>Thank you for using nginx.em>p>
body>
html>搞定。。。。
参考:
基于二进制安装 kubernetes 1.9.6
kube-proxy
kubelet