k8s 安装环境

同步主机时间

安装chrony

apt-get install chrony

修改 chrony.conf 配置文件

cat > /etc/chrony/chrony.conf << 'EOF'
pool 192.168.10.43 iburst
driftfile /var/lib/chrony/chrony.drift
makestep 1 3
rtcsync
allow 192.168.10.0/24
local stratum 10
keyfile /etc/chrony/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF

生效与使用

重启

systemctl restart chrony.service

同步系统时钟

chronyc -a makestep

查看时间同步源

chronyc sources -v

查看时间同步源状态

chronyc sourcestats -v

重启依赖系统时间的服务

systemctl restart rsyslog.service

修改主机名与host

hostnamectl set-hostname [name]

cat > /etc/hosts << 'EOF'
127.0.0.1 localhost
192.168.10.43 rancher.oldme.com
192.168.10.42 k8s-master-1.oldme.com
192.168.10.41 k8s-master-2.oldme.com
192.168.10.40 k8s-node-1.oldme.com
192.168.10.39 k8s-node-2.oldme.com
EOF

其他

关闭swap

sed -ri 's/.swap./#&/' /etc/fstab

重装清除旧文件

docker stop $(docker ps -aq)
docker system prune -f
docker volume rm $(docker volume ls -q)
rm -rf /etc/ceph
/etc/cni
/etc/kubernetes
/opt/cni
/opt/rke
/run/secrets/kubernetes.io
/run/calico
/run/flannel
/var/lib/calico
/var/lib/etcd
/var/lib/cni
/var/lib/kubelet
/var/lib/rancher/rke/log
/var/log/containers
/var/log/pods
/var/run/calico