k8s-vps-shell/1.vps-k8s-sysconfig.sh

#!/bin/sh

systemctl disable --now firewalld 
systemctl disable --now dnsmasq
systemctl disable --now NetworkManager

setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config

swapoff -a && sysctl -w vm.swappiness=0
sed -ri 's/.*swap.*/#&/' /etc/fstab

sed -i '/# End of file/i########################' /etc/security/limits.conf
sed -i '/# End of file/i* soft nofile 655350'     /etc/security/limits.conf
sed -i '/# End of file/i* hard nofile 655350'     /etc/security/limits.conf
sed -i '/# End of file/i* soft nproc 655350'      /etc/security/limits.conf
sed -i '/# End of file/i* hard nproc 655350'      /etc/security/limits.conf
sed -i '/# End of file/i* soft memlock unlimited' /etc/security/limits.conf
sed -i '/# End of file/i* hard memlock unlimited' /etc/security/limits.conf
sed -i '/# End of file/i########################' /etc/security/limits.conf

modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack

cat <<EOF | sudo tee > /etc/modules-load.d/ipvs.conf
ip_vs
ip_vs_lc
ip_vs_wlc
ip_vs_rr
ip_vs_wrr
ip_vs_lblc
ip_vs_lblcr
ip_vs_dh
ip_vs_sh
ip_vs_fo
ip_vs_nq
ip_vs_sed
ip_vs_ftp
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF

# 执行命令
systemctl enable --now systemd-modules-load.service  #--now = enable+start

#检测是否加载
lsmod | grep -e ip_vs -e nf_conntrack


## 所有节点
cat <<EOF > /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
net.ipv4.conf.all.route_localnet = 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 = 16768
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_timestamps = 0
net.core.somaxconn = 16768
EOF
sysctl --system

lsmod | grep -e ip_vs -e nf_conntrack

timedatectl set-timezone Asia/Shanghai