解决 flannel.1 interface state DOWN

ip a 查看结果  flannel.1 i state UNKNOWN 并且五 inet

发现日志

 device (flannel.1): state change: unmanaged -> unavailable (reason 'connection-assumed') [10 20 41]

 device (flannel.1): state change: unavailable -> unmanaged (reason 'connection-assumed') [20 10 41]

 failed to add vxlanRoute (172.17.76.0/24 -> 172.17.76.0): network is down

 

首先删除

ip link delete flannel.1

在  /etc/sysctl.conf 中 设置 net.ipv4.ip_forward=1

systemctl restart network

systemctl restart flanneld

 

若发现两个节点flannel的ip 冲突 删除/var/run/flannel/subnet.env后再次重启flanneld