Installation and deployment k8s- version -1.13

1. Preparing the Environment

# Unified hosts 
CAT / etc / hosts 
10.0.0.10 K8S-Master 
10.0.0.20 K8S-node1 
10.0.0.30 K8S-node2 
# synchronization time 
ntpdate ntp1.aliyun.com 
# disable SELINUX, close firewalld and iptables.service, k8s will set up their own iptables network policy 
systemctl STOP iptables.service 
systemctl disable iptables.service 
systemctl STOP firewalld.service 
systemctl disable firewalld.service 
# close the swap, modify / etc / fstab file, comment out the SWAP automatically mount, using the free -m confirm the swap has been closed 
-a swapoff 
# swappiness adjustment parameter 
# create /etc/sysctl.d/k8s.conf file, add the following 
net.bridge.bridge-of NF-Call-ip6tables = 1 
net.bridge.bridge of NF-Call-iptables-1 = 
= 1 net.ipv4.ip_forward 
vm.swappiness = 0 
# take effect 
modprobe br_netfilter
sysctl -p /etc/sysctl.d/k8s.conf
# 开启ipvs
yum -y install ipvsadm
vim /etc/sysconfig/modules/ipvs.modules
#!/bin/bash
ipvs_mods_dir="/usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs"
for i in $(ls $ipvs_mods_dir | grep -o "^[^.]*");do
   /sbin/modinfo -F filename $i &> /dev/null
  if [ $? -eq 0 ];then
    /sbin/modprobe $i
  fi
done
chmod +x /etc/sysconfig/modules/ipvs.modules
bash /etc/sysconfig/modules/ipvs.modules
lsmod | grep ip_vs

2. Install

# 安装 Docker
yum install -y yum-utils device-mapper-persistent-data lvm2
curl -o /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum install docker-ce-18.06.1.ce-3.el7 -y
# FQ代理不管用了,注释掉
vim /usr/lib/systemd/system/docker.service
#Environment="HTTPS_PROXY=http://www.ik8s.io:10080"
Environment="NO_PROXY=127.0.0.1/8,127.0.0.1/16"
systemctl daemon-reload
systemctl start docker
systemctl enable docker

cat /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
= 1 repo_gpgcheck 
gpgkey = HTTPS: //mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg 
# document distribution node to two 
SSH-keygen -t DSA 
SSH-Copy-ID -i ~ / .ssh / id_dsa.pub 10.0.0.20 
SSH-Copy-ID -i ~ / .ssh / id_dsa.pub 10.0.0.30 
for I 20 is 30 in; 10.0.0 do SCP /etc/yum.repos.d/{docker-ce.repo,kubernetes.repo} $ I:. /etc/yum.repos.d/; DONE 
# If following this command will download the latest version, here we use 1.13 
# yum install -y kubelet kubeadm kubectl 
yum -y install kubelet-1.13.0 1.13.0 Kubernetes-kubeadm-CNI-0.6.0 kubectl-1.13.0 
# set to boot from the start, before you start the service. and other initialization completed the restart 
systemctl enable kubelet 
# mirrored first downloaded to the local 
CAT pull-images.sh 
#! / bin / bash
images=(kube-apiserver:v1.13.0 kube-controller-manager:v1.13.0 kube-scheduler:v1.13.0 kube-proxy:v1.13.0 pause:3.1 etcd:3.2.24 coredns:1.2.6)

for ima in ${images[@]}
do
   docker pull   registry.cn-hangzhou.aliyuncs.com/rsq_kubeadm/$ima
   docker tag    registry.cn-hangzhou.aliyuncs.com/rsq_kubeadm/$ima   k8s.gcr.io/$ima
   docker rmi  -f  registry.cn-hangzhou.aliyuncs.com/rsq_kubeadm/$ima
done

chmod +x pull-images.sh && ./pull-images.sh
# 集群初始化
vim /etc/sysconfig/kubelet
KUBELET_EXTRA_ARGS="--fail-swap-on=false"
kubeadm init --kubernetes-version=v1.13.0 --pod-network-cidr=10.244.0.0/16 \
--service-cidr=10.96.0.0/12  --ignore-preflight-errors=Swap
...
  join 10.0.0.10:6443 --token 05blrg.37hx6cwa85giuj5c --discovery kubeadm-token-CA-CERT-hash \ 
sha256: 0a1635e9f31e78317524545faa3dd5957665f8b871b168a605ef523dacbea7bb 
kubeadm # initialization output join 10.0.0.10:6443 words, keep it, to be used later this command node joins the cluster, and the command can not be reproduced 
mkdir -p $ the HOME / .kube 
cp -i $ /etc/kubernetes/admin.conf the HOME / .kube / config 
# installation flannel network components (executed on the Master) 
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

Cluster initialization k8s

3. Review the information

# View status information 
kubectl GET cs 
# to view node information, the state is NotReady, because leaving a shortfall of flannel components, without this component can not set up a network 
kubectl GET Nodes 
# to view the current status of all pod kube-system name space on the master node in the running 
kubectl Kube-System PODS -n GET 
# pod must ensure that all are running the state, which if not, you can see why a similar following command 
kubectl dscrible PODS coredns-86c58d9df4-qz9xc -n Kube-System 
# to view the current node namespace 
kubectl get ns 
# View pod detailed status 
kubectl GET PODS -n -o Kube System-Wide 
kubectl GET PODS --all Namespaces -o-Wide

4.node on execution

Nodes may not be mounted on kubectl # 
yum the install kubelet -Y-1.13.0 1.13.0 Kubernetes kubeadm-CNI-0.6.0- 
systemctl enable kubelet 
CAT pull-images.sh 
# / bin / the bash! 
Images = (PAUSE: 3.1 Kube -proxy: v1.13.0) 
for IMA Images in $ {[@]} 
do 
   Docker pull registry.cn-hangzhou.aliyuncs.com/rsq_kubeadm/$ima 
   Docker Tag registry.cn-hangzhou.aliyuncs.com/rsq_kubeadm/$ima k8s.gcr.io/$ima 
   Docker RMI -f registry.cn-hangzhou.aliyuncs.com/rsq_kubeadm/$ima 
DONE 

the chmod + X pull-images.sh && ./pull-images.sh 
Docker pull quay.io/coreos /flannel:v0.11.0-amd64 
# implementation of the Join kubeadm 
vim / etc / sysconfig / kubelet
KUBELET_EXTRA_ARGS="--fail-swap-on=false"
kubeadm join 10.0.0.10:6443 --token 05blrg.37hx6cwa85giuj5c --discovery-token-ca-cert-hash \
sha256:0a1635e9f31e78317524545faa3dd5957665f8b871b168a605ef523dacbea7bb \
--ignore-preflight-errors=Swap

You can also download mirror registry.cn-hangzhou.aliyuncs.com/google_containers from here

Mirroring requires a three node Node

Two nodes join master

Reference blog: https://www.jianshu.com/p/427162394424

Reference blog: http://blog.itpub.net/28916011/viewspace-2213536/

Installation and deployment k8s- version -1.13

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