欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

[转]k8s 1.4 新版本部署

程序员文章站 2022-06-17 15:58:51
...

k8s 1.4 新版本部署

测试环境:

node-1: 10.6.0.140
node-2: 10.6.0.187
node-3: 10.6.0.188

 


kubernetes 集群,包含 master 节点,与 node 节点。

 

hostnamectl --static set-hostname hostname

10.6.0.140 - k8s-master
10.6.0.187 - k8s-node-1
10.6.0.188 - k8s-node-2

 


配置 /etc/hosts

添加

10.6.0.140 k8s-master
10.6.0.187 k8s-node-1
10.6.0.188 k8s-node-2

 

部署:

一、安装k8s

yum install -y socat

 

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
------------------------------------------------------
cat <<EOF> /etc/yum.repos.d/k8s.repo
[kubelet]
name=kubelet
baseurl=http://files.rm-rf.ca/rpms/kubelet/
enabled=1
gpgcheck=0
EOF
------------------------------------------------------
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

yum makecache

yum install -y kubelet kubeadm kubectl kubernetes-cni

 

由于 google 被墙, 所以使用 kubeadm init 创建 集群 的时候会出现卡住

国内已经有人将镜像上传至 docker hub 里面了

我们直接下载:

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
docker pull chasontang/kube-proxy-amd64:v1.4.0
docker pull chasontang/kube-discovery-amd64:1.0
docker pull chasontang/kubedns-amd64:1.7
docker pull chasontang/kube-scheduler-amd64:v1.4.0
docker pull chasontang/kube-controller-manager-amd64:v1.4.0
docker pull chasontang/kube-apiserver-amd64:v1.4.0
docker pull chasontang/etcd-amd64:2.2.5
docker pull chasontang/kube-dnsmasq-amd64:1.3
docker pull chasontang/exechealthz-amd64:1.1
docker pull chasontang/pause-amd64:3.0
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

下载以后使用 docker tag 命令将其做别名改为 gcr.io/google_containers

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
docker tag chasontang/kube-proxy-amd64:v1.4.0  gcr.io/google_containers/kube-proxy-amd64:v1.4.0
docker tag chasontang/kube-discovery-amd64:1.0 gcr.io/google_containers/kube-discovery-amd64:1.0
docker tag chasontang/kubedns-amd64:1.7  gcr.io/google_containers/kubedns-amd64:1.7
docker tag chasontang/kube-scheduler-amd64:v1.4.0  gcr.io/google_containers/kube-scheduler-amd64:v1.4.0
docker tag chasontang/kube-controller-manager-amd64:v1.4.0  gcr.io/google_containers/kube-controller-manager-amd64:v1.4.0
docker tag chasontang/kube-apiserver-amd64:v1.4.0  gcr.io/google_containers/kube-apiserver-amd64:v1.4.0
docker tag chasontang/etcd-amd64:2.2.5  gcr.io/google_containers/etcd-amd64:2.2.5
docker tag chasontang/kube-dnsmasq-amd64:1.3  gcr.io/google_containers/kube-dnsmasq-amd64:1.3
docker tag chasontang/exechealthz-amd64:1.1  gcr.io/google_containers/exechealthz-amd64:1.1
docker tag chasontang/pause-amd64:3.0  gcr.io/google_containers/pause-amd64:3.0
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

清除原来下载的镜像

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
docker rmi chasontang/kube-proxy-amd64:v1.4.0
docker rmi chasontang/kube-discovery-amd64:1.0
docker rmi chasontang/kubedns-amd64:1.7
docker rmi chasontang/kube-scheduler-amd64:v1.4.0
docker rmi chasontang/kube-controller-manager-amd64:v1.4.0
docker rmi chasontang/kube-apiserver-amd64:v1.4.0
docker rmi chasontang/etcd-amd64:2.2.5
docker rmi chasontang/kube-dnsmasq-amd64:1.3
docker rmi chasontang/exechealthz-amd64:1.1
docker rmi chasontang/pause-amd64:3.0
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

启动 kubelet

systemctl enable kubelet
systemctl start kubelet

 

 

利用 kubeadm 创建 集群 

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
[root@k8s-master ~]#kubeadm init --api-advertise-addresses=10.6.0.140 --use-kubernetes-version v1.4.0

<master/tokens> generated token: "eb4d40.67aac8417294a8cf" <master/pki> created keys and certificates in "/etc/kubernetes/pki" <util/kubeconfig> created "/etc/kubernetes/kubelet.conf" <util/kubeconfig> created "/etc/kubernetes/admin.conf" <master/apiclient> created API client configuration <master/apiclient> created API client, waiting for the control plane to become ready <master/apiclient> all control plane components are healthy after 10.304645 seconds <master/apiclient> waiting for at least one node to register and become ready <master/apiclient> first node has registered, but is not ready yet <master/apiclient> first node has registered, but is not ready yet <master/apiclient> first node has registered, but is not ready yet <master/apiclient> first node has registered, but is not ready yet <master/apiclient> first node has registered, but is not ready yet <master/apiclient> first node is ready after 3.004762 seconds <master/discovery> created essential addon: kube-discovery, waiting for it to become ready <master/discovery> kube-discovery is ready after 4.002661 seconds <master/addons> created essential addon: kube-proxy <master/addons> created essential addon: kube-dns Kubernetes master initialised successfully! You can now join any number of machines by running the following on each node: kubeadm join --token 8609e3.c2822cf312e597e1 10.6.0.140
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

查看 kubelet 状态

systemctl status kubelet

 

子节点 启动 kubelet 首先必须启动 docker

systemctl enable kubelet
systemctl start kubelet

 

下面子节点加入集群

kubeadm join --token 8609e3.c2822cf312e597e1 10.6.0.140

 

查看 kubelet 状态

systemctl status kubelet

 

查看集群状态

[root@k8s-master ~]#kubectl get node
NAME         STATUS    AGE
k8s-master   Ready     1d
k8s-node-1   Ready     1d
k8s-node-2   Ready     1d

 

此时可看到 三个节点 都已经 Ready , 但是其实 Pod 只会运行在 node 节点

如果需要所有节点,包括master 也运行 Pod 需要运行

 kubectl taint nodes --all dedicated-

 

 

安装 POD 网络

这里使用官方推荐的 weave 网络

kubectl apply -f https://git.io/weave-kube

 

查看所有pod 状态

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
[root@k8s-master ~]#kubectl get pods --all-namespaces
NAMESPACE     NAME                                 READY     STATUS    RESTARTS   AGE
kube-system   etcd-k8s-master                      1/1       Running   1          49m
kube-system   kube-apiserver-k8s-master            1/1       Running   1          48m
kube-system   kube-controller-manager-k8s-master   1/1       Running   1          48m
kube-system   kube-discovery-1971138125-0oq58      1/1       Running   1          49m
kube-system   kube-dns-2247936740-ojzhw            3/3       Running   3          49m
kube-system   kube-proxy-amd64-1hhdf               1/1       Running   1          49m
kube-system   kube-proxy-amd64-4c2qt               1/1       Running   0          47m
kube-system   kube-proxy-amd64-tc3kw               1/1       Running   1          47m
kube-system   kube-scheduler-k8s-master            1/1       Running   1          48m
kube-system   weave-net-9mrlt                      2/2       Running   2          46m
kube-system   weave-net-oyguh                      2/2       Running   4          46m
kube-system   weave-net-zc67d                      2/2       Running   0          46m
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

 

使用 GlusterFS 作为 volume

官方详细说明:

https://github.com/kubernetes/kubernetes/tree/master/examples/volumes/glusterfs


1. 配置 GlusterFS 集群,以及设置好 GlusterFS 的 volume , node 客户端安装 glusterfs-client


2. k8s-master 创建一个 endpoints.

我这边 GlusterFS 有3个节点

vi glusterfs-endpoints.json

# 每一个 GlusterFS 节点,必须写一列. 端口随意填写(1-65535)

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
{
  "kind": "Endpoints",
  "apiVersion": "v1",
  "metadata": {
    "name": "glusterfs-cluster"
  },
  "subsets": [
    {
      "addresses": [
        {
          "ip": "10.6.0.140"
        }
      ],
      "ports": [
        {
          "port": 1
        }
      ]
    },
    {
      "addresses": [
        {
          "ip": "10.6.0.187"
        }
      ],
      "ports": [
        {
          "port": 1
        }
      ]
    },
    {
      "addresses": [
        {
          "ip": "10.6.0.188"
        }
      ],
      "ports": [
        {
          "port": 1
        }
      ]
    }
  ]
}
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

创建 endpoints

[root@k8s-master ~]#kubectl create -f glusterfs-endpoints.json 
endpoints "glusterfs-cluster" created

 

查看 endpoints

[root@k8s-master ~]#kubectl get endpoints
NAME                ENDPOINTS                                AGE
glusterfs-cluster   10.6.0.140:1,10.6.0.187:1,10.6.0.188:1   37s

 

3. k8s-master 创建一个 service.

vi glusterfs-service.json

# 这里注意之前填写的 port

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
{
  "kind": "Service",
  "apiVersion": "v1",
  "metadata": {
    "name": "glusterfs-cluster"
  },
  "spec": {
    "ports": [
      {"port": 1}
    ]
  }
}
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

创建 service 

[root@k8s-master ~]#kubectl create -f glusterfs-service.json 
service "glusterfs-cluster" created

 

查看 service

[root@k8s-master ~]#kubectl get service
NAME                CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
glusterfs-cluster   100.71.255.174   <none>        1/TCP     14s

 

 

4. k8s-master 创建一个 Pod 来测试挂载

vi glusterfs-pod.json

# glusterfs 下 path 配置 glusterfs volume 的名称
readOnly: true (只读) and readOnly: false

 

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
{
    "apiVersion": "v1",
    "kind": "Pod",
    "metadata": {
        "name": "glusterfs"
    },
    "spec": {
        "containers": [
            {
                "name": "glusterfs",
                "image": "gcr.io/google_containers/pause-amd64:3.0",
                "volumeMounts": [
                    {
                        "mountPath": "/mnt/glusterfs",
                        "name": "glusterfsvol"
                    }
                ]
            }
        ],
        "volumes": [
            {
                "name": "glusterfsvol",
                "glusterfs": {
                    "endpoints": "glusterfs-cluster",
                    "path": "models",
                    "readOnly": false
                }
            }
        ]
    }
}
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

查看 挂载的 volume

[root@k8s-node-2 ~]# mount | grep models
10.6.0.140:models on /var/lib/kubelet/pods/947390da-8f6a-11e6-9ade-d4ae52d1f0c9/volumes/kubernetes.io~glusterfs/glusterfsvol type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072)

 

 

 

 

 

 

 

编写一个 Deployment 的 yaml 文件

[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
          - containerPort: 80
[转]k8s 1.4 新版本部署
            
    
    博客分类: kubernetes kubernetes 

 

使用 kubectl create  进行创建

kubectl create -f nginx.yaml --record

 

查看 pod 

[root@k8s-master ~]#kubectl get pod
NAME                               READY     STATUS    RESTARTS   AGE
nginx-deployment-646889141-459i5   1/1       Running   0          9m
nginx-deployment-646889141-vxn29   1/1       Running   0          9m

 

查看 deployment

[root@k8s-master ~]#kubectl get deploy
NAME               DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
nginx-deployment   2         2         2            2           10m

 

相关标签: kubernetes