[ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]

在部署kubernetes集群的时候，检测集群环境出现以下报错：

# kubeadm init --dry-run

[ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables contents are not set to 1

主机未开启net.bridge.bridge-nf-call-iptables内核参数。

1、永久配置内核参数

# cat >> /etc/sysctl.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF    

2、重新加载内核配置

# sysctl -p