kubernetes 1.18安装

标签：kubernetes -- 192.168 etc ansible yum 1.18 k8s 安装

准备环境：

主机名（centos7）	IP地址	角色
node01	192.168.254.101	master
node02	192.168.254.102	node
node03	192.168.254.103	node

注意：一定要修改hosts解析，否则使用ansible命令连接很慢

# 三台主机都修改hosts
cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.254.101 node01
192.168.254.102 node02
192.168.254.103 node03

一、安装Ansible

使用yum安装

192.168.254.101：

wget -O /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/epel-7.repo
yum install ansible -y

配置ansible

~]# cat > /etc/ansible/hosts2 <<EOF
[k8s]
192.168.254.101
192.168.254.102
192.168.254.103
EOF

#生成秘钥对
ssh-keygen
ssh-copy-id root@192.168.254.101
ssh-copy-id root@192.168.254.102
ssh-copy-id root@192.168.254.103
#测试
ansible k8s -m ping

二、安装docker

1 安装docker

# 1、安装docker： 分别在 254.101 254.102 254.103上执行，也可以通过ansible命令执行 
sudo yum install -y yum-utils   device-mapper-persistent-data  lvm2
sudo yum-config-manager   --add-repo     http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# sudo yum install docker-ce docker-ce-cli containerd.io
# 安装指定版本
sudo yum install docker-ce-19.03.8 docker-ce-cli-19.03.8 -y

2、配置加速

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://k1vsanis.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
sudo systemctl enable docker

3 关闭swap

关闭swap，注释swap分区
swapoff -a

~]# cat /etc/fstab 
#/dev/mapper/centos-swap swap                    swap    defaults        0 0

# 使用ansible替换
 ansible k8s -m shell -a "sed -i s@/dev/mapper/centos-swap@#/dev/mapper/centos-swap@g /etc/fstab"
 ansible k8s -m shell -a "swapoff -a"
# 查看
 ansible k8s -m shell -a "free -m"

　

4、桥接的IPv4流量传递到iptables的链
cat > /etc/sysctl.d/k8s.conf <<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system


# 使用ansible操作
ansible k8s -m copy -a "src=/etc/sysctl.d/k8s.conf dest=/etc/sysctl.d/k8s.conf"
ansible k8s -m shell -a "sysctl --system"

查看
ansible k8s -m shell -a "cat /etc/sysctl.d/k8s.conf"

　　

5、安装常用工具
yum install vim bash-completion net-tools gcc wget -y

　　

二、安装kubectl、kubelet、kubeadm

1、配置yum源

cat <<EOF > /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
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

　　

2、安装
# yum install kubectl kubelet kubeadm -y
# 安装指定版本 使用 --nogpgcheck
yum install --nogpgcheck kubectl-1.18.0-0.x86_64 kubelet-1.18.0-0.x86_64 kubeadm-1.18.0-0.x86_64 -y 
systemctl enable kubelet

　　

3、初始化k8s集群
api server地址就是master本机IP

kubeadm init --kubernetes-version=1.18.0  \
--apiserver-advertise-address=192.168.254.101   \
--image-repository registry.aliyuncs.com/google_containers  \
--service-cidr=10.10.0.0/16 --pod-network-cidr=10.122.0.0/16

#记录最后内容
kubeadm join 192.168.56.105:6443 --token ozcotl.qixuwjitmj3jm18f \
    --discovery-token-ca-cert-hash sha256:2ccba350a7833470c0c8ed6c007aadf73226b892be221ea78d9bfa35b2810dbf 

　

配置网络

kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml

 

 

 

　

 

标签：kubernetes,--,192.168,etc,ansible,yum,1.18,k8s,安装
From： https://www.cnblogs.com/zhutao2014/p/16652068.html