Github user wilderrodrigues commented on the pull request:
https://github.com/apache/cloudstack/pull/1413#issuecomment-183966121
During the tests we found a couple of issues:
1. Default route was being set to private gateway interface after the
master router went through a crash (or stop/start)
2. Once restarting the Old master router, it was going to backup mode
(good) but the private gateway interface was set to UP (bad)
Manual Tests:
1. VPC created
2. Tier added
3. VM created
4. Pub IP acquired
5. ACL + rule created
6. PF created
7. SSH into machine and pigged google
* Interface and Route on Master
```
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UP qlen 1000
link/ether 06:fb:e8:00:00:66 brd ff:ff:ff:ff:ff:ff
inet 10.0.3.100/24 brd 10.0.3.255 scope global eth3
root@r-3-VM:~#
root@r-3-VM:~# ip route show
default via 192.168.23.1 dev eth1
10.0.1.0/26 dev eth2 proto kernel scope link src 10.0.1.16
10.0.3.0/24 dev eth3 proto kernel scope link src 10.0.3.100
169.254.0.0/16 dev eth0 proto kernel scope link src 169.254.1.55
192.168.23.0/24 dev eth1 proto kernel scope link src 192.168.23.53
root@r-3-VM:~#
```
Interface and Route on Backup
```
5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:7d:6a:00:00:66 brd ff:ff:ff:ff:ff:ff
inet 10.0.3.100/24 brd 10.0.3.255 scope global eth3
root@r-4-VM:~#
root@r-4-VM:~# ip route show
10.0.1.0/26 dev eth2 proto kernel scope link src 10.0.1.34
169.254.0.0/16 dev eth0 proto kernel scope link src 169.254.1.198
root@r-4-VM:~#
```
* Stop Master Router
* Interface and Route on (new) Master
```
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UP qlen 1000
link/ether 06:7d:6a:00:00:66 brd ff:ff:ff:ff:ff:ff
inet 10.0.3.100/24 brd 10.0.3.255 scope global eth3
root@r-4-VM:~#
root@r-4-VM:~# ip route show
default via 192.168.23.1 dev eth1
10.0.1.0/26 dev eth2 proto kernel scope link src 10.0.1.34
10.0.3.0/24 dev eth3 proto kernel scope link src 10.0.3.100
169.254.0.0/16 dev eth0 proto kernel scope link src 169.254.1.198
192.168.23.0/24 dev eth1 proto kernel scope link src 192.168.23.53
root@r-4-VM:~#
```
* Restart the (old) Master router
* SSH into the VM and ping google again
```
sbpltk1zffh04:sbp_dev wrodrigues$ ssh root@192.168.23.54
root@192.168.23.54's password:
# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: seq=0 ttl=47 time=13.045 ms
64 bytes from 8.8.8.8: seq=1 ttl=47 time=12.019 ms
64 bytes from 8.8.8.8: seq=2 ttl=47 time=11.299 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 11.299/12.121/13.045 ms
#
```
* Interface is DOWN on Backup router
```
5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 06:fb:e8:00:00:66 brd ff:ff:ff:ff:ff:ff
inet 10.0.3.100/24 brd 10.0.3.255 scope global eth3
root@r-3-VM:~#
```
* Route on the backup router
```
root@r-3-VM:~# ip route show
10.0.1.0/26 dev eth2 proto kernel scope link src 10.0.1.16
169.254.0.0/16 dev eth0 proto kernel scope link src 169.254.3.56
root@r-3-VM:~#
```
* Routes working fine! SSH into the VM and pinged google again.
```sbpltk1zffh04:sbp_dev wrodrigues$ ssh root@192.168.23.54
root@192.168.23.54's password:
# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: seq=0 ttl=47 time=19.080 ms
64 bytes from 8.8.8.8: seq=1 ttl=47 time=10.590 ms
64 bytes from 8.8.8.8: seq=2 ttl=47 time=13.668 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 10.590/14.446/19.080 ms
# exitConnection to 192.168.23.54 closed.
sbpltk1zffh04:sbp_dev wrodrigues$
```
I will update the integration test in order to cover the scenario above.
Cheers,
Wilder
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