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标题: 京东云开发者｜IoT运维 - 如何部署一套高可用K8S集群 [打印本页]

作者: 东湖之滨 时间: 2022-11-4 02:23
标题: 京东云开发者｜IoT运维 - 如何部署一套高可用K8S集群
环境

准备工作

配置ansible(deploy 主机执行)

# ssh-keygen
# for i in 192.168.3.{21..28}; do ssh-copy-id -i ~/.ssh/id_rsa.pub $i; done

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[root@deploy ~]# cat /etc/ansible/hosts
[etcd]
192.168.3.21
192.168.3.22
192.168.3.23
[k8s-master]
192.168.3.24
192.168.3.25
192.168.3.26
[k8s-worker]
192.168.3.27
192.168.3.28
[k8s:children]
k8s-master
k8s-worker

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优化主机配置

关闭防火墙和selinux

# ansible all -m shell -a "systemctl stop firewalld && systemctl disable firewalld"
# ansible all -m shell -a "sed -i 's/^SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config"

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修改limit
关闭交换分区

# swapoff -a
# ansible k8s -m shell -a "yes | cp /etc/fstab /etc/fstab_bak"
# ansible k8s -m shell -a "cat /etc/fstab_bak | grep -v swap > /etc/fstab"
# ansible k8s -m shell -a "echo vm.swappiness = 0 >> /etc/sysctl.d/k8s.conf"
# ansible k8s -m shell -a "sysctl -p /etc/sysctl.d/k8s.conf"

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配置ipvs

[code]# cat /root/ipvs.sh #!/bin/bashyum -y install ipvsadm ipset####创建ipvs脚本 cat > /etc/sysconfig/modules/ipvs.modules /etc/sysctl.d/k8s.conf

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