使用Rockey操作系统运行rancher镜像报错iptables is not available on this host解决方法

参考
https://blog.csdn.net/u011197085/article/details/138143476

1. 环境查看

# cat /etc/redhat-release 
Rocky Linux release 9.3 (Blue Onyx)
# uname -a
Linux Rocky9K8SMaster003021 5.14.0-362.18.1.el9_3.0.1.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Feb 11 13:49:23 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

2. 故障现象
   运行Rancher镜像时docker不停重启
   查看docker日志有以下报错信息

# k3s exited with: exit status 1
# iptables is not available on this host

3. 原因分析
   没有加载iptables内核模块
4. 解决方法
   手动加载模块

# sudo modprobe iptable_nat 
# sudo modprobe iptable_filter

设置到配置文件

# cat /etc/modules-load.d/modules.conf 
iptable_nat
iptable_filter

重启

# reboot

如果以上步骤未解决问题则删除docker启动的进程和数据卷再启动一次rancher

# docker stop xxx
# docker rm xxx
# docker volume prune -a