init.sh

#!/usr/bin/env bash

apt update
# nfs for longhorn
apt-get install nfs-common open-iscsi -y
# bbr
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
# optimize network
sysctl -p
	sed -i '/fs.file-max/d' /etc/sysctl.conf
	sed -i '/fs.inotify.max_user_instances/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_syncookies/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_fin_timeout/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_tw_reuse/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_max_syn_backlog/d' /etc/sysctl.conf
	sed -i '/net.ipv4.ip_local_port_range/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_max_tw_buckets/d' /etc/sysctl.conf
	sed -i '/net.ipv4.route.gc_timeout/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_synack_retries/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_syn_retries/d' /etc/sysctl.conf
	sed -i '/net.core.somaxconn/d' /etc/sysctl.conf
	sed -i '/net.core.netdev_max_backlog/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_timestamps/d' /etc/sysctl.conf
	sed -i '/net.ipv4.tcp_max_orphans/d' /etc/sysctl.conf
	sed -i '/net.ipv4.ip_forward/d' /etc/sysctl.conf
	echo "fs.file-max = 1000000
fs.inotify.max_user_instances = 8192
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_tw_reuse = 1
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.route.gc_timeout = 100
net.ipv4.tcp_syn_retries = 1
net.ipv4.tcp_synack_retries = 1
net.core.somaxconn = 32768
net.core.netdev_max_backlog = 32768
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_max_orphans = 32768
# forward ipv4
net.ipv4.ip_forward = 1">>/etc/sysctl.conf
	sysctl -p
	echo "*               soft    nofile           1000000
*               hard    nofile          1000000">/etc/security/limits.conf
	echo "ulimit -SHn 1000000">>/etc/profile

# Download k9s
wget https://github.com/derailed/k9s/releases/download/v0.25.18/k9s_Linux_x86_64.tar.gz
tar xvf k9s_Linux_x86_64.tar.gz
chmod a+x k9s
mv k9s /bin/

# Install autok3s
curl -sS https://rancher-mirror.rancher.cn/autok3s/install.sh  | sh