Flink 面试题总结及答案

1 ip route和route -n的区别

1.1 ip route的用法

[root@master-01 home]# ip route
default via 192.168.217.2 dev ens33 
10.3.1.0/24 via 10.3.1.0 dev flannel.1 onlink 
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 

1.2 route -n的用法

[root@master-01 home]# ip route 
default via 192.168.217.2 dev ens33 
10.3.0.0/24 dev cni0 proto kernel scope link src 10.3.0.1 
10.3.1.0/24 via 10.3.1.0 dev flannel.1 onlink 
169.254.0.0/16 dev ens33 scope link metric 1002 
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 
192.168.217.0/24 dev ens33 proto kernel scope link src 192.168.217.129 
[root@master-01 home]# 
[root@master-01 home]# 
[root@master-01 home]# 
[root@master-01 home]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.217.2   0.0.0.0         UG    0      0        0 ens33
10.3.0.0        0.0.0.0         255.255.255.0   U     0      0        0 cni0
10.3.1.0        10.3.1.0        255.255.255.0   UG    0      0        0 flannel.1
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 ens33
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.217.0   0.0.0.0         255.255.255.0   U     0      0        0 ens33

2 iproute2 对决 net-tools