kubernetes集群部署(一):初始化

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初始化

关闭防火墙和SELINUX

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systemctl stop firewalld && systemctl disable firewalld
setenforce 0
sed -i s/SELINUX=enforcing/SELINUX=disabled/ /etc/selinux/config

kubernetes结点初始化

关闭swap

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swapoff -a && sysctl -w vm.swappiness=0
sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

安装docker

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curl https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
yum install docker-ce-18.06.2.ce-3.el7 -y
systemctl start docker && systemctl enable docker

内存参数

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modprobe br_netfilter

cat << EOF | tee /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.tcp_tw_recycle=0
vm.swappiness=0
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.ipv6.conf.all.disable_ipv6=1
EOF

sysctl -p /etc/sysctl.d/k8s.conf