kubernetes基礎入門之-安裝部署配置示例

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### 系統環境準備(CentOS 7.2)：

a) # systemctl disable firewalld 

b) # sed -i s'/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux

c) # yum -y update && reboot

d) # yum -y install ntpdate && ntpdate cn.pool.ntp.org

Master : 192.168.11.10

node1 : 192.168.11.20

node2 : 192.168.11.30

下載安裝：

etct: https://github.com/coreos/etcd/releases

flannel: https://github.com/coreos/flannel/releases

kubernetes: https://github.com/kubernetes/kubernetes/releases

docker: https://docs.docker.com/engine/installation/linux/centos/

) 分別在各節點寫入DNS：

192.168.11.10 master hub.jevic.io

192.168.11.20 node1

192.168.11.30 node2

----------------------------------------------------

Kubernetes 二進制版本：

https://github.com/kubernetes/kubernetes/releases/download/v1.4.6/kubernetes.tar.gz

Master 配置： 192.168.11.10

[root@ master]# ls /opt/sourceetcd

flannel  etcd  kubernetes

[root@ master] ln -s  /opt/source/etcd/etcd /usr/local/bin

[root@ master] ln -s  /opt/source/etcd/etcdctl /usr/local/bin

[root@ master] ln -s  /opt/source/flannel/flanneld /usr/local/bin

[root@ master] ln -s  /opt/source/kubernetes/server/bin/kube-apiserver /usr/local/bin

[root@ master] ln -s  /opt/source/kubernetes/server/bin/kube-controller-manager /usr/local/bin

[root@ master] ln -s  /opt/source/kubernetes/server/bin/kubectl /usr/local/bin

[root@ master] ln -s  /opt/source/kubernetes/server/bin/kube-scheduler /usr/local/bin

[root@ master] mkdir /var/log/{flanneld,kubernetes}

[root@ master] nohup etcd --name etcd10 --data-dir /var/lib/etcd \

--listen-client-urls http://0.0.0.0:2378,http://0.0.0.0:4001 \

--advertise-client-urls http://0.0.0.0:2378,http://0.0.0.0:4001 >> /var/log/etcd.log 2>&1 &

[root@ master] nohup flanneld --listen=0.0.0.0:8888 >> /var/log/flanneld/flanneld.log 2>&1 &

[root@ master] etcdctl set /coreos.com/network/config '{ "Network": "10.1.0.0/16" }'

--- 然後在node1,node2 分別執行(a-g)部分操作 ---

最後開啓kubernetes服務：

[root@ master] nohup kube-apiserver --logtostderr=true \

--v=0 --etcd_servers=http://0.0.0.0:2378 \

--insecure-bind-address=0.0.0.0 \

--insecure-port=8080 \

--service-cluster-ip-range=10.254.0.0/16 >> /var/log/kubernetes/kube-apiserver.log 2>&1 &

[root@ master] nohup kube-controller-manager --logtostderr=true --v=0 --master=http://0.0.0.0:8080 >> /var/log/kubernetes/controller.log 2>&1 &

[root@ master] nohup kube-scheduler --logtostderr=true --v=0 --master=http://0.0.0.0:8080 >> /var/log/kubernetes/scheduler.log 2>&1 &

查看節點是否加入：

[root@ master] kubectl get nodes

NAME       STATUS    AGE

node1      Ready     1h

node2      Ready     39m

----------------------------------------------------

Node 節點配置：

【node1: 192.168.11.20】

[root@ node1]# ls /opt/source

flannel   kubernetes

[root@ node1]# ln -s /opt/source/etcd/etcd  /usr/local/bin

[root@ node1]# ln -s /opt/source/etcd/etcdctl /usr/local/bin

[root@ node1]# ln -s /opt/source/flannel/flanneld /usr/local/bin

[root@ node1]# ln -s /opt/source/kubernetes/server/bin/kubelet /usr/local/bin

[root@ node1]# ln -s /opt/source/kubernetes/server/bin/kube-proxy /usr/local/bin

a.[root@ node1]# mkdir /var/log/{flanneld,kubernetes}

b.[root@ node1]# nohup flanneld -etcd-endpoints=http://192.168.11.10:4001 -remote=192.168.11.10:8888 >> /var/log/flanneld/flanneld.log 2>&1 &

c.[root@ node1]# source /run/flannel/subnet.env

d.[root@ node1]# cat /run/flannel/subnet.env 

FLANNEL_NETWORK=10.1.0.0/16

FLANNEL_SUBNET=10.1.62.1/24

FLANNEL_MTU=1472

FLANNEL_IPMASQ=false

e.[root@ node1]# grep "bip" /lib/systemd/system/docker.service 

ExecStart=/usr/bin/dockerd --bip=10.1.62.1/24 --mtu=1472

f.[root@ node1]# systemctl daemon-reload && systemctl start docker

g.[root@ node1]# ip a|egrep "docker|flan"

3: flannel0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1472 qdisc pfifo_fast state UNKNOWN qlen 500

    inet 10.1.62.0/16 scope global flannel0

4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 

    inet 10.1.62.1/24 scope global docker0

最後啓動kubernetes節點服務：

[root@ node1]# nohup kubelet --address=0.0.0.0 \

--port=10250 --logtostderr=true --v=0 \

--api-servers=http://192.168.11.10:8080 >> /var/log/kubernetes/kubelet.log 2>&1 &

[root@ node1]# nohup kube-proxy --logtostderr=true --v=0 --master=http://192.168.11.10:8080 >> /var/log/kubernetes/proxy.log 2>&1 &

----------------------------------------------------

【node2: 192.168.11.30】

[root@ node2]# ls /opt/source

flannel   kubernetes

[root@ node2]# ln -s /opt/source/etcd/etcd  /usr/local/bin

[root@ node2]# ln -s /opt/source/etcd/etcdctl /usr/local/bin

[root@ node2]# ln -s /opt/source/flannel/flanneld /usr/local/bin

[root@ node2]# ln -s /opt/source/kubernetes/server/bin/kubelet /usr/local/bin

[root@ node2]# ln -s /opt/source/kubernetes/server/bin/kube-proxy /usr/local/bin

a.[root@ node2]# mkdir /var/log/{flanneld,kubernetes}

b.[root@ node2]# nohup flanneld -etcd-endpoints=http://192.168.11.10:4001 -remote=192.168.11.10:8888 >> /var/log/flanneld/flanneld.log 2>&1 &

c.[root@ node2]# source /run/flannel/subnet.env

d.[root@ node2]# cat /run/flannel/subnet.env 

FLANNEL_NETWORK=10.1.0.0/16

FLANNEL_SUBNET=10.1.77.1/24

FLANNEL_MTU=1472

FLANNEL_IPMASQ=false

e.[root@ node2]# grep "bip" /lib/systemd/system/docker.service 

ExecStart=/usr/bin/dockerd --bip=10.1.77.1/24 --mtu=1472

f.[root@ node2]# systemctl daemon-reload && systemctl start docker

g.[root@ node2]# ip a|egrep "docker|flan"

3: flannel0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1472 qdisc pfifo_fast state UNKNOWN qlen 500

    inet 10.1.77.0/16 scope global flannel0

4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 

    inet 10.1.77.1/24 scope global docker0

最後啓動kubernetes節點服務：

[root@ node2]# nohup kubelet --address=0.0.0.0 \

--port=10250 --logtostderr=true --v=0 \

--api-servers=http://192.168.11.10:8080 >> /var/log/kubernetes/kubelet.log 2>&1 &

[root@ node2]# nohup kube-proxy --logtostderr=true --v=0 --master=http://192.168.11.10:8080 >> /var/log/kubernetes/proxy.log 2>&1 &