k8s记录-k8s部署参考

一、环境准备

yum -y install epel-release

yum -y install wget nmap lsof iotop lrzsz ntpdate tree

rm -rf /etc/localtime
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

ntpdate time1.aliyun.com
crontab -e
*/3 * * * * /usr/sbin/ntpdate time1.aliyun.com >/dev/null 2>&1

systemctl disable firewalld.service
systemctl stop firewalld.service
sed -i 's/^SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config && setenforce 0

swapoff -a
sed -i 's/^.*swap/#&/g'  /etc/fstab

vim /etc/sysctl.conf

net.ipv4.tcp_keepalive_time = 1200
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
vm.max_map_count = 262144
fs.file-max = 655350
net.core.somaxconn=20480
net.ipv4.ip_forward = 1

sysctl -p

vim /etc/security/limits.conf

*    soft    nofile   655350
*    hard    nofile   655350
*    soft    nproc    655350
*    hard    nproc    655350
二、安装docker

yum -y remove docker-ce docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-selinux docker-engine-selinux docker-engine

yum -y install yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum -y install --setopt=obsoletes=0 docker-ce

systemctl daemon-reload
systemctl enable docker
systemctl start docker
三、安装k8s

cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
EOF

yum -y remove kubelet kubeadm kubectl

yum -y install kubelet-1.16.2-0.x86_64 kubeadm-1.16.2-0.x86_64 kubectl-1.16.2-0.x86_64 --disableexcludes=kubernetes
systemctl daemon-reload
systemctl enable kubelet

cat >> /etc/sysctl.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

sysctl -p
echo 1 >/proc/sys/net/bridge/bridge-nf-call-iptables
echo 1 >/proc/sys/net/bridge/bridge-nf-call-ip6tables

echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
sysctl -p