![Ubuntu 18.04 netplan apply 中断网络重启修复它](https://linux22.com/image/167050/Ubuntu%2018.04%20netplan%20apply%20%E4%B8%AD%E6%96%AD%E7%BD%91%E7%BB%9C%E9%87%8D%E5%90%AF%E4%BF%AE%E5%A4%8D%E5%AE%83.png)
设置如下:
host1-ip iface: ens192: 10.100.0.11/16
host1-gateway: ens192: 10.100.0.1
host1-ip iface: ens224: 10.0.0.11/16
host1-gateway: ens224: 10.0.0.1
host2-ip iface: ens192: 10.100.0.12/16
host2-gateway: ens192: 10.100.0.1
host2-ip iface: ens224: 10.0.0.12/16
host2-gateway: ens224: 10.0.0.1
keepalived-vip1 on iface: ens192: 10.100.100.1
keepalived-vip2 on iface: ens224: 10.0.100.1
dns1: 10.100.0.21
dns2: 10.100.0.22
/etc/netplan/01-netcfg.yaml:
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
ens192:
addresses: [ 10.100.0.11/16 ]
gateway4: 10.100.0.1
nameservers:
search: [ example.com ]
addresses:
- "10.100.0.21"
- "10.100.0.22"
ens224:
addresses: [ 10.0.0.11/16 ]
nameservers:
search: [ example.com ]
addresses:
- "10.100.0.21"
- "10.100.0.22"
有了这个配置
keepalived-vip1 on iface: ens192: 10.100.100.1 <-- works
keepalived-vip2 on iface: ens224: 10.0.100.1 <-- dead, not pingable
从逻辑上讲,没有为 ens224 接口设置网关,因此网络调度程序过来并使用以下脚本为我们设置 iface ens224 的网关和 keepalived 地址:
/usr/lib/networkd-dispatcher/routable.d/00up:
#!/bin/bash
## INITIALISIERUNG
#Diese Werte werden vom netword-dispatcher an das Skript übergeben
set -x
INTERFACE=${IFACE}
ACTION=${STATE}
case "${INTERFACE}" in
("ens224")
case "${ACTION}" in
("routable")
/bin/ip route add table 2 default via 10.0.0.1
/bin/ip rule add from 10.0.100.1 table 2
;;
(*)
;;
esac
(*)
;;
esac
可以重新启动服务器,一切按预期工作,使用我的两个地址并重新启动,它仍然有效:
keepalived-vip1 on iface: ens192: 10.100.100.1 <-- works
keepalived-vip2 on iface: ens224: 10.0.100.1 <-- works
现在我执行一些命令:
netplan apply
systemctl restart systemd-networkd
现在地址消失了(keepalived 健康检查,仍然成功,因此不会发生故障转移,但在这种情况下,需要调试此 netplan // 网络 // 重新启动行为)
keepalived-vip1 on iface: ens192: 10.100.100.1 <-- dead, not pingable
keepalived-vip2 on iface: ens224: 10.0.100.1 <-- dead, not pingable
尝试使用脚本中的手动步骤修复它:
ip route add table 2 default via 10.0.0.1
ip rule add from 10.0.100.1 table 2
仍然:
keepalived-vip1 on iface: ens192: 10.100.100.1 <-- dead, not pingable
keepalived-vip2 on iface: ens224: 10.0.100.1 <-- dead, not pingable
重新启动服务器:它恢复正常:
keepalived-vip1 on iface: ens192: 10.100.100.1 <-- works
keepalived-vip2 on iface: ens224: 10.0.100.1 <-- works
还用 netplan 尝试过,已经在Netplan 具有 2 个 NIC,每个 NIC 连接到不同的网关但这样我就无法让第二个 keepalived-vip 工作。
答案1
将回答我自己的问题,经过大量调查后,我偶然发现了一个 keepalived 问题:https://github.com/acassen/keepalived/issues/836
“systemd-networkd 正在删除不‘属于’它的地址”,keepalived 在 ubuntu 或 rhel 上发布的版本中无法检测到这一点,
对我来说,解决方案是构建一个版本为 2.0.20 的 keepalived 容器,它能够处理这种情况
(keepalived >= v2 可以处理)
答案2
另一种选择是尝试向接口添加“关键”标志:
network:
version: 2
renderer: networkd
ethernets:
ens192:
addresses: [ 10.100.0.11/16 ]
gateway4: 10.100.0.1
nameservers:
search: [ example.com ]
addresses:
- "10.100.0.21"
- "10.100.0.22"
critical: true
ens224:
addresses: [ 10.0.0.11/16 ]
nameservers:
search: [ example.com ]
addresses:
- "10.100.0.21"
- "10.100.0.22"
critical: true