Kubernetes v1.8二进制方式安装

Kubernetes

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 2018/04/15   Share

Kubernetes

本文以二进制的方式安装Kubernetes集群，从中我们可以更好的理解Kubernetes各核心进程是如何进行协调配合的。

其中在Master节点上我们需要部署的有:etcd,kube-apiserver,kube-controller-manager,kube-scheduler服务进程，而Node节点上需要部署docker,kubelet,kube-proxy服务进程。

二进制包下载地址: https://github.com/kubernetes/kubernetes/releases

环境准备：
Master: 10.211.55.16
Node: 10.211.55.17,10.211.55.18

Master

1.etcd服务

~]# wget -c https://github.com/coreos/etcd/releases/download/v3.2.9/etcd-v3.2.9-linux-amd64.tar.gz
~]# tar xf etcd-v3.2.9-linux-amd64.tar.gz 
~]# cp etcd-v3.2.9-linux-amd64/etcd* /usr/bin/
~]# vim /usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
[Service]
Type=notify
ExecStart=/usr/bin/etcd --name=kubernets --data-dir=/var/lib/k8s/ --listen-client-urls=http://10.211.55.16:2379,http://127.0.0.1:2379 --listen-peer-urls=http://10.211.55.16:2380  --advertise-client-urls=http://10.211.55.16:2379 --initial-cluster-token=etcd-cluster  --initial-cluster-state=new
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
~]# systemctl daemon-reload
~]# systemctl start etcd
~]# etcdctl cluster-health
member 8e9e05c52164694d is healthy: got healthy result from http://10.211.55.16:2379
cluster is healthy

2.kube-apiserver服务

~]# vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
After=etcd.service
Wanted=etcd.service


[Service]
EnvironmentFile=/etc/k8s/apiserver
ExecStart=/usr/bin/kube-apiserver $KUBE_API_ARGS
Restart=on-failure
Type=notify

[Install]
WantedBy=multi-user.target
~]# vim /etc/k8s/apiserver
KUBE_API_ARGS="--storage-backend=etcd3 --etcd-servers=http://127.0.0.1:2379 --insecure-bind-address=0.0.0.0 --insecure-port=8080 --service-cluster-ip-range=10.10.10.0/24 --service-node-port-range=1-65535 --admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,DefaultStorageClass,ResourceQuota --logtostderr=true --log-dir=/var/log/k8s --v=2"
~]# systemctl daemon-reload
~]# systemctl start kube-apiserver

3.kube-controller-manager服务

~]# vim /usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernets Controller Manager
Adter=kube-apiserver.service
Requires=kube-apiserver.service


[Service]
EnvironmentFile=-/etc/k8s/controller-manager
ExecStart=/usr/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_ARGS
Restart=on-failure

[Install]
WantedBy=multi-user.target
~]# vim /etc/k8s/controller-manager
KUBE_CONTROLLER_MANAGER_ARGS='--master=http://127.0.0.1:8080 --logtostderr=true --log-dir=/var/log/k8s --v=2'
~]# systemctl daemon-reload
~]# systemctl start kube-controller-manager

4.kube-scheduler服务

~]# vim /usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
After=kube-apiserver.service
Requires=kube-apiserver.service


[Service]
EnvironmentFile=-/etc/k8s/scheduler
ExecStart=/usr/bin/kube-scheduler $KUBE_SCHEDULER_ARGS
Restart=on-failure

[Install]
WantedBy=multi-user.target
~]# vim /etc/k8s/scheduler
KUBE_SCHEDULER_ARGS="--master=http://127.0.0.1:8080  --logtostderr=true --log-dir=/var/log/k8s --v=2"
~]# systemctl daemon-reload
~]# systemctl start kube-scheduler

Node

1.docker服务

1	~]# curl -fsSL https://get.docker.com \| bash -s docker --mirror Aliyun

2.kubelet服务

~]# vim /usr/lib/systemd/system/kubelet.service 
[Unit]
Description=Kubernetes Kubelet Server
After=docer.service
Requires=docker.service


[Service]
WorkingDirectory=/var/lib/kubelet
EnvironmentFile=/etc/k8s/kubelet
ExecStart=/usr/bin/kubelet $KUBELET_ARGS
Restart=on-failure

[Install]
WantedBy=multi-user.target
~]# vim /etc/k8s/kubelet
KUBELET_ARGS="--address=10.211.55.17 --port=10250 --hostname-override=k8s-node1 --allow-privileged=false --kubeconfig=/etc/k8s/kubelet.kubeconfig --cluster-dns=10.211.55.1 --cluster-domain=cluster.local --fail-swap-on=false --logtostderr=true --log-dir=/var/log/kubernetes --v=4"
~}# vim /etc/k8s/kubelet.kubeconfig
apiVersion: v1
kind: Config
clusters:
  - cluster:
      server: http://10.211.55.16:8080
    name: local
contexts:
  - context:
      cluster: local
    name: local
current-context: local
~]# systemctl daemon-reload
~]# systemctl start kubelet

3.kube-proxy

~]# vim /usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Kube-proxy Server
After=network.service
Requires=network.service


[Service]
EnvironmentFile=/etc/k8s/proxy
ExecStart=/usr/bin/kube-proxy $KUBE_PROXY_ARGS
Restart=on-failure

[Install]
WantedBy=multi-user.target
~]# vim /etc/k8s/proxy
KUBE_PROXY_ARGS='--master=http://10.211.55.16:8080 --hostname-override=k8s-node1 --logtostderr=true --log-dir=/var/log/k8s --v=4'
~]# systemctl daemon-reload
~}# systemctl start kube-proxy

测试

pause根容器需要提前准备好，需要翻墙，我们可以怎么做：

1	docker pull cloudnil/pause-amd64:3.0
2	docker tag cloudnil/pause-amd64:3.0 gcr.io/google_containers/pause-amd64:3.0

检查:

~]# kubectl get nodes
NAME        STATUS    ROLES     AGE       VERSION
k8s-node1   Ready     <none>    2h        v1.8.11
k8s-node2   Ready     <none>    2h        v1.8.11
~]# kubectl get svc
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.10.10.1   <none>        443/TCP   2h
~]# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
controller-manager   Healthy   ok                   
etcd-0               Healthy   {"health": "true"}   
scheduler            Healthy   ok

原文作者：Zhang Jusene

原文链接：http://jusene.github.io/2018/04/15/k8s-deploy/

发表日期：April 15th 2018, 11:00:58 pm

更新日期：November 30th 2019, 1:54:24 am

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CATALOG

1. Kubernetes
2. Master
3. Node
4. 测试



1	~]# wget -c https://github.com/coreos/etcd/releases/download/v3.2.9/etcd-v3.2.9-linux-amd64.tar.gz
2	~]# tar xf etcd-v3.2.9-linux-amd64.tar.gz
3	~]# cp etcd-v3.2.9-linux-amd64/etcd* /usr/bin/
4	~]# vim /usr/lib/systemd/system/etcd.service
5	[Unit]
6	Description=Etcd Server
7	After=network.target
8	[Service]
9	Type=notify
10	ExecStart=/usr/bin/etcd --name=kubernets --data-dir=/var/lib/k8s/ --listen-client-urls=http://10.211.55.16:2379,http://127.0.0.1:2379 --listen-peer-urls=http://10.211.55.16:2380 --advertise-client-urls=http://10.211.55.16:2379 --initial-cluster-token=etcd-cluster --initial-cluster-state=new
11	Restart=on-failure
12	LimitNOFILE=65536
13	[Install]
14	WantedBy=multi-user.target
15	~]# systemctl daemon-reload
16	~]# systemctl start etcd
17	~]# etcdctl cluster-health
18	member 8e9e05c52164694d is healthy: got healthy result from http://10.211.55.16:2379
19	cluster is healthy

1	~]# vim /usr/lib/systemd/system/kube-apiserver.service
2	[Unit]
3	Description=Kubernetes API Server
4	After=etcd.service
5	Wanted=etcd.service
6
7
8	[Service]
9	EnvironmentFile=/etc/k8s/apiserver
10	ExecStart=/usr/bin/kube-apiserver $KUBE_API_ARGS
11	Restart=on-failure
12	Type=notify
13
14	[Install]
15	WantedBy=multi-user.target
16	~]# vim /etc/k8s/apiserver
17	KUBE_API_ARGS="--storage-backend=etcd3 --etcd-servers=http://127.0.0.1:2379 --insecure-bind-address=0.0.0.0 --insecure-port=8080 --service-cluster-ip-range=10.10.10.0/24 --service-node-port-range=1-65535 --admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,DefaultStorageClass,ResourceQuota --logtostderr=true --log-dir=/var/log/k8s --v=2"
18	~]# systemctl daemon-reload
19	~]# systemctl start kube-apiserver

1	~]# vim /usr/lib/systemd/system/kube-controller-manager.service
2	[Unit]
3	Description=Kubernets Controller Manager
4	Adter=kube-apiserver.service
5	Requires=kube-apiserver.service
6
7
8	[Service]
9	EnvironmentFile=-/etc/k8s/controller-manager
10	ExecStart=/usr/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_ARGS
11	Restart=on-failure
12
13	[Install]
14	WantedBy=multi-user.target
15	~]# vim /etc/k8s/controller-manager
16	KUBE_CONTROLLER_MANAGER_ARGS='--master=http://127.0.0.1:8080 --logtostderr=true --log-dir=/var/log/k8s --v=2'
17	~]# systemctl daemon-reload
18	~]# systemctl start kube-controller-manager

1	~]# vim /usr/lib/systemd/system/kube-scheduler.service
2	[Unit]
3	Description=Kubernetes Scheduler
4	After=kube-apiserver.service
5	Requires=kube-apiserver.service
6
7
8	[Service]
9	EnvironmentFile=-/etc/k8s/scheduler
10	ExecStart=/usr/bin/kube-scheduler $KUBE_SCHEDULER_ARGS
11	Restart=on-failure
12
13	[Install]
14	WantedBy=multi-user.target
15	~]# vim /etc/k8s/scheduler
16	KUBE_SCHEDULER_ARGS="--master=http://127.0.0.1:8080 --logtostderr=true --log-dir=/var/log/k8s --v=2"
17	~]# systemctl daemon-reload
18	~]# systemctl start kube-scheduler

1	~]# vim /usr/lib/systemd/system/kubelet.service
2	[Unit]
3	Description=Kubernetes Kubelet Server
4	After=docer.service
5	Requires=docker.service
6
7
8	[Service]
9	WorkingDirectory=/var/lib/kubelet
10	EnvironmentFile=/etc/k8s/kubelet
11	ExecStart=/usr/bin/kubelet $KUBELET_ARGS
12	Restart=on-failure
13
14	[Install]
15	WantedBy=multi-user.target
16	~]# vim /etc/k8s/kubelet
17	KUBELET_ARGS="--address=10.211.55.17 --port=10250 --hostname-override=k8s-node1 --allow-privileged=false --kubeconfig=/etc/k8s/kubelet.kubeconfig --cluster-dns=10.211.55.1 --cluster-domain=cluster.local --fail-swap-on=false --logtostderr=true --log-dir=/var/log/kubernetes --v=4"
18	~}# vim /etc/k8s/kubelet.kubeconfig
19	apiVersion: v1
20	kind: Config
21	clusters:
22	- cluster:
23	server: http://10.211.55.16:8080
24	name: local
25	contexts:
26	- context:
27	cluster: local
28	name: local
29	current-context: local
30	~]# systemctl daemon-reload
31	~]# systemctl start kubelet

1	~]# vim /usr/lib/systemd/system/kube-proxy.service
2	[Unit]
3	Description=Kubernetes Kube-proxy Server
4	After=network.service
5	Requires=network.service
6
7
8	[Service]
9	EnvironmentFile=/etc/k8s/proxy
10	ExecStart=/usr/bin/kube-proxy $KUBE_PROXY_ARGS
11	Restart=on-failure
12
13	[Install]
14	WantedBy=multi-user.target
15	~]# vim /etc/k8s/proxy
16	KUBE_PROXY_ARGS='--master=http://10.211.55.16:8080 --hostname-override=k8s-node1 --logtostderr=true --log-dir=/var/log/k8s --v=4'
17	~]# systemctl daemon-reload
18	~}# systemctl start kube-proxy

1	~]# kubectl get nodes
2	NAME STATUS ROLES AGE VERSION
3	k8s-node1 Ready <none> 2h v1.8.11
4	k8s-node2 Ready <none> 2h v1.8.11
5	~]# kubectl get svc
6	NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
7	kubernetes ClusterIP 10.10.10.1 <none> 443/TCP 2h
8	~]# kubectl get cs
9	NAME STATUS MESSAGE ERROR
10	controller-manager Healthy ok
11	etcd-0 Healthy {"health": "true"}
12	scheduler Healthy ok