啟動keepalived后宿主機無法ping通用keepalived，報錯：

[root@localhost ~]# ping 172.18.0.15 PING 172.18.0.15 (172.18.0.15) 56(84) bytes of data. From 172.18.0.1 icmp_seq=1 Destination Host Unreachable From 172.18.0.1 icmp_seq=2 Destination Host Unreachable From 172.18.0.1 icmp_seq=3 Destination Host Unreachable From 172.18.0.1 icmp_seq=4 Destination Host Unreachable From 172.18.0.1 icmp_seq=5 Destination Host Unreachable From 172.18.0.1 icmp_seq=6 Destination Host Unreachable

解決方案：

大多數都是我把配置文件沒寫對，重寫配置文件，重啟服務；

這里檢查能否ping通，需要看服務內你的配置文件寫入的ip有沒有出現在docker的網卡上，具體方法是：

進入到docker服務內，不是在宿主機上哦，查看配置文件 root@8351443065ea:/etc/keepalived# cat keepalived.conf vrrp_instance VI_1 {state MASTERinterface eth0virtual_router_id 100priority 100advert_int 1authentication {auth_type PASSauth_pass 123456}virtual_ipaddress {172.18.0.201} } 如果配置文件信息都是正確的，通過ip a命令會顯示如當前docker服務有的網卡 root@ec688a676a07:/# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever 17: eth0@if18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default ;很明顯沒有我配置文件中的172.18.0.201ip地址，代表配置文件未生效，大多數配置文件錯誤停掉keepalived服務重新修改編輯后重啟 root@ec688a676a07:/# service keepalived stop [....] Stopping keepalived: keepalived. ok 重啟服務 root@ec688a676a07:/# service keepalived start [....] Starting keepalived: keepalived. ok 再次查看docker服務的ip root@ec688a676a07:/# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever 17: eth0@if18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default link/ether 02:42:ac:12:00:07 brd ff:ff:ff:ff:ff:ff link-netnsid 0inet 172.18.0.7/16 scope global eth0valid_lft forever preferred_lft forever 這里出現了我的配置文件ip地址inet 172.18.0.201/32 scope global eth0valid_lft forever preferred_lft foreverinet6 fe80::42:acff:fe12:7/64 scope link valid_lft forever preferred_lft forever在服務內直接ping這個ip，發現能ping通，切換宿主機，也能ping通，解決問題 [root@localhost ~]# ping 172.18.0.201 PING 172.18.0.201 (172.18.0.201) 56(84) bytes of data. 64 bytes from 172.18.0.201: icmp_seq=1 ttl=64 time=0.077 ms 64 bytes from 172.18.0.201: icmp_seq=2 ttl=64 time=0.064 ms

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轉載于:https://www.cnblogs.com/lifuhei/p/10187109.html

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