Introducing.. lseth/lsnet

Hi everyone,

I am not sure about you but systems with many interfaces and ips hurt my eyes.

Thus, a few months ago, I started writing a small tool to help display relevant information in a more compact way.

I named this tool 'lseth' and its python rewrite will become 'lsnet'. It can display Linux bonds, the active interface and the current MAC of the bond.

Here's what it does:

On a RHEL7.1 system with OSP7, instead of this:

# ip a s
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0:  mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
    link/ether 00:50:56:3c:f8:dd brd ff:ff:ff:ff:ff:ff
3: eth1:  mtu 1500 qdisc pfifo_fast master bond1 state UP qlen 1000
    link/ether 00:50:56:3c:72:c4 brd ff:ff:ff:ff:ff:ff
4: eth2:  mtu 1500 qdisc pfifo_fast master bond2 state UP qlen 1000
    link/ether 00:50:56:2d:f6:f6 brd ff:ff:ff:ff:ff:ff
5: ovs-system:  mtu 1500 qdisc noop state DOWN
    link/ether ae:4e:20:a3:25:98 brd ff:ff:ff:ff:ff:ff
6: br-ex:  mtu 1500 qdisc noqueue state UNKNOWN
    link/ether 00:50:56:3c:f8:dd brd ff:ff:ff:ff:ff:ff
    inet 10.0.128.165/22 brd 10.0.131.255 scope global br-ex
       valid_lft forever preferred_lft forever
    inet6 fe80::250:56ff:fe3c:f8dd/64 scope link
       valid_lft forever preferred_lft forever
7: br-int:  mtu 1500 qdisc noop state DOWN
    link/ether 32:4f:6f:b0:37:4a brd ff:ff:ff:ff:ff:ff
8: br-tun:  mtu 1500 qdisc noop state DOWN
    link/ether fa:c3:7b:3f:40:40 brd ff:ff:ff:ff:ff:ff
9: bond0:  mtu 1500 qdisc noqueue master ovs-system state UP
    link/ether 00:50:56:3c:f8:dd brd ff:ff:ff:ff:ff:ff
    inet6 fe80::250:56ff:fe3c:f8dd/64 scope link
       valid_lft forever preferred_lft forever
10: bond1:  mtu 1500 qdisc noqueue state UP
    link/ether 00:50:56:3c:72:c4 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::250:56ff:fe3c:72c4/64 scope link
       valid_lft forever preferred_lft forever
11: bond2:  mtu 1500 qdisc noqueue state UP
    link/ether 00:50:56:2d:f6:f6 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::250:56ff:fe2d:f6f6/64 scope link
       valid_lft forever preferred_lft forever
15: qbr1eace6ff-34:  mtu 1500 qdisc noqueue state UP
    link/ether ae:65:4b:c3:3c:28 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::b7:9cff:febc:41e6/64 scope link
       valid_lft forever preferred_lft forever
[.....output abreviated....]

Then you'll get this:

# lseth
#PHYS  STATE  SPEED   MTU DRIVER        HW_Path       MAC_Addr                IP_Addr              Description
eth0      up   1000  1500 e1000         0000:02:02.0  00:50:56:3c:f8:dd       N/A                  Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev
eth1      up   1000  1500 e1000         0000:02:06.0  00:50:56:3c:72:c4       N/A                  Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev
eth2      up   1000  1500 e1000         0000:02:07.0  00:50:56:2d:f6:f6       N/A                  Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev
#VIRT             STATE   MTU DRIVER                     Active MAC              IP_Addr              Description
bond0                up  1500 bonding (3.7.1)            00:50:56:3c:f8:dd       N/A                  [ eth0 ]
bond1                up  1500 bonding (3.7.1)            00:50:56:3c:72:c4       N/A                  [ eth1 ]
bond2                up  1500 bonding (3.7.1)            00:50:56:2d:f6:f6       N/A                  [ eth2 ]
br-ex                up  1500 openvswitch (3.10.0-22...) 00:50:56:3c:f8:dd       10.0.128.165/22      N/A
br-int           (down)  1500 openvswitch (3.10.0-22...) 32:4f:6f:b0:37:4a       N/A                  N/A
br-tun           (down)  1500 openvswitch (3.10.0-22...) fa:c3:7b:3f:40:40       N/A                  N/A
ovs-system       (down)  1500 openvswitch (3.10.0-22...) ae:4e:20:a3:25:98       N/A                  N/A
qbr1eace6ff-34       up  1500 bridge (2.3)               ae:65:4b:c3:3c:28       N/A                  N/A
qbr6a35e050-ee       up  1500 bridge (2.3)               c6:bc:28:9c:2a:ce       N/A                  N/A
qbr7bf44648-c3       up  1500 bridge (2.3)               ca:ff:e7:5e:f5:26       N/A                  N/A
qbr35e0d8b2-83       up  1500 bridge (2.3)               6e:69:de:21:c8:9b       N/A                  N/A
qbr79f83edf-d8       up  1500 bridge (2.3)               86:f9:f5:90:a7:c7       N/A                  N/A
qbr397526b7-44       up  1500 bridge (2.3)               d6:7e:49:a6:32:53       N/A                  N/A
qbrbd38c1c4-14       up  1500 bridge (2.3)               fe:38:81:e8:32:03       N/A                  N/A
qbrd5eb3687-5a       up  1500 bridge (2.3)               8a:a1:75:a4:07:ab       N/A                  N/A
qvb1eace6ff-34       up  1500 veth (3.10.0-229.20.1)     ae:65:4b:c3:3c:28       N/A                  N/A
qvb6a35e050-ee       up  1500 veth (3.10.0-229.20.1)     c6:bc:28:9c:2a:ce       N/A                  N/A
qvb7bf44648-c3       up  1500 veth (3.10.0-229.20.1)     ca:ff:e7:5e:f5:26       N/A                  N/A
qvb35e0d8b2-83       up  1500 veth (3.10.0-229.20.1)     6e:69:de:21:c8:9b       N/A                  N/A
qvb79f83edf-d8       up  1500 veth (3.10.0-229.20.1)     86:f9:f5:90:a7:c7       N/A                  N/A
qvb397526b7-44       up  1500 veth (3.10.0-229.20.1)     d6:7e:49:a6:32:53       N/A                  N/A
qvbbd38c1c4-14       up  1500 veth (3.10.0-229.20.1)     fe:38:81:e8:32:03       N/A                  N/A
qvbd5eb3687-5a       up  1500 veth (3.10.0-229.20.1)     8a:a1:75:a4:07:ab       N/A                  N/A
qvo1eace6ff-34       up  1500 veth (3.10.0-229.20.1)     52:8a:42:c8:52:36       N/A                  N/A
qvo6a35e050-ee       up  1500 veth (3.10.0-229.20.1)     5a:0c:70:1b:4b:41       N/A                  N/A
qvo7bf44648-c3       up  1500 veth (3.10.0-229.20.1)     fa:65:75:82:17:dd       N/A                  N/A
qvo35e0d8b2-83       up  1500 veth (3.10.0-229.20.1)     52:9c:02:99:64:b4       N/A                  N/A
qvo79f83edf-d8       up  1500 veth (3.10.0-229.20.1)     52:90:4c:c6:da:0b       N/A                  N/A
qvo397526b7-44       up  1500 veth (3.10.0-229.20.1)     d6:51:d4:73:1e:e4       N/A                  N/A
qvobd38c1c4-14       up  1500 veth (3.10.0-229.20.1)     7a:bf:ea:8c:44:8e       N/A                  N/A
qvod5eb3687-5a       up  1500 veth (3.10.0-229.20.1)     22:30:00:96:b2:e7       N/A                  N/A

Here are a few other examples:

Simplistic RHEL6.7 system:

# lseth
#PHYS  STATE  SPEED   MTU DRIVER        HW_Path       MAC_Addr                IP_Addr              Description
eth0      up   1000  1500 igb           0000:03:00.0  d0:50:99:5b:da:72       N/A                  Intel Corporation I210 Gigabit Network Connection (rev 03)
eth1      up   1000  1500 igb           0000:04:00.0  d0:50:99:5b:da:73       N/A                  Intel Corporation I210 Gigabit Network Connection (rev 03)
eth2      up   1000  1500 ax88179_178a  3-4:1.0       00:24:9b:0b:de:10       N/A
eth3      up   1000  1500 ax88179_178a  3-3:1.0       00:24:9b:13:26:7c       N/A
#VIRT     STATE   MTU DRIVER                             Active MAC              IP_Addr              Description
bond0        up  1500 bonding (3.7.1)                    d0:50:99:5b:da:72       10.0.128.246/22      [ eth0 ]
bond1        up  1500 bonding (3.7.1)                    d0:50:99:5b:da:73       172.17.1.102/24      [ eth1 ]
bond2        up  1500 bonding (3.7.1)                    00:24:9b:0b:de:10       N/A                  [ eth2 ]
bond3        up  1500 bonding (3.7.1)                    00:24:9b:13:26:7c       N/A                  [ eth3 ]
dummy0   (down)  1500 dummy (2.6.32-573.7.1)             ce:eb:7d:e8:b6:0a       N/A                  N/A
dummy1   (down)  1500 dummy (2.6.32-573.7.1)             42:20:a0:f6:a1:62       N/A                  N/A
vmnet2       up  1500 vmnet (2.6.32-573.7.1)             00:50:56:c0:00:02       10.128.16.1/24       N/A
vmnet4       up  1500 vmnet (2.6.32-573.7.1)             00:50:56:c0:00:04       10.128.17.1/24       N/A
vmnet6       up  1500 vmnet (2.6.32-573.7.1)             00:50:56:c0:00:06       10.128.18.1/24       N/A

Simplistic RHEL5 system:

#PHYS  STATE  SPEED   MTU DRIVER        HW_Path       MAC_Addr                IP_Addr              Description
eth0      up   1000  1500 e1000         0000:02:00.0  00:0c:29:16:91:04       N/A                  Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev
#VIRT    STATE   MTU DRIVER                              Active MAC              IP_Addr              Description
bond0       up  1500 bonding (3.4.0-2)                   00:0c:29:16:91:04       10.0.128.158/24      [ eth0 ]

It's still a very rough work in progress but I'd like to share it with all the good people here to get valuable input (would it be useful in your daily job?, RFE's, etc..)

Meanwhile, I already know I'll want to:

1) populate entries that are related to OVS and OVS-Bonds.

2) fix a few bugs (infiniband, etc..)

3) rewrite the whole thing in python to make it faster

4) add an option to explore the network namespaces and display interfaces underneath.

The current code can be downloaded here: https://raw.githubusercontent.com/ElCoyote27/krynn-tools/master/lseth

Ideas are most welcomed!