在CentOS上部署Kubernetes(K8s)时,除了基本的安装步骤外,还有一些进阶技巧可以帮助你优化性能、提高安全性、简化管理和提升效率。以下是一些关键的进阶技巧:
/etc/sysctl.d/k8s.conf
文件,优化内核参数,例如:net.ipv4.ip_forward=1
net.bridge.bridge-nf-call-iptables=1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720
net.ipv4.tcp_keepalive_time=600
net.ipv4.tcp_keepalive_probes=3
net.ipv4.tcp_keepalive_intvl=15
net.ipv4.tcp_max_tw_buckets=36000
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_max_orphans=327680
net.ipv4.tcp_orphan_retries=3
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_max_syn_backlog=16384
net.ipv6.conf.all.disable_ipv6=0
net.ipv6.conf.default.disable_ipv6=0
net.ipv6.conf.lo.disable_ipv6=0
net.ipv6.conf.all.forwarding=1
执行 sysctl -p /etc/sysctl.d/k8s.conf
使配置生效。yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum install -y docker-ce docker-ce-cli containerd.io
systemctl enable docker
systemctl start docker
sudo setenforce 0
sudo sed -i --follow-symlinks 's/SELINUXenforcing/SELINUXdisabled/' /etc/selinux/config
hostnamectl set-hostname k8s-master
cat /etc/hosts
192.168.2.190 k8s-master
192.168.2.126 k8s-node1
192.168.2.135 k8s-node2
通过上述进阶技巧,你可以显著提升在CentOS上部署的Kubernetes集群的性能、安全性和管理效率。记得在实施任何更改之前,先在测试环境中验证这些更改的效果。