Mani Prashanth Varma Manthena created CLOUDSTACK-9980:
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Summary: ACS Master: Internal DNS feature breaks on restart
network with cleanup
Key: CLOUDSTACK-9980
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9980
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Components: SystemVM, Virtual Router
Affects Versions: 4.10.0.0
Reporter: Mani Prashanth Varma Manthena
Priority: Critical
Fix For: 4.10.0.0
Steps to reproduce:
1) Create an Isolated network with DNS service being provided by VR, and set a
network domain name.
2) Deploy guest VMs in the above created network.
3) Verify Internal DNS functionality with the above deployed VMs (e.g. hostname
--fqdn, ping with hostnames, etc.).
4) Restart the network with cleanup, verify that the VR is re-deployed.
5) Verify that the Internal DNS functionality is broken.
{noformat:title=Internal DNS config on VR before restarting the network with
cleanup}
root@r-18-VM:~# cat /etc/hosts
ff02::1 ip6-allnodes
10.10.1.1 r-18-VM data-server
ff02::2 ip6-allrouters
::1 localhost ip6-localhost ip6-loopback
10.10.1.48 vm02
10.10.1.84 vm01
127.0.0.1 localhost r-18-VM
root@r-18-VM:~#
{noformat}
{noformat:title=Internal DNS config on VR after restarting the network with
cleanup}
root@r-23-VM:~# cat /etc/hosts
ff02::1 ip6-allnodes
10.10.1.1 r-23-VM data-server
ff02::2 ip6-allrouters
::1 localhost ip6-localhost ip6-loopback
127.0.0.1 localhost r-23-VM
root@r-23-VM:~#
{noformat}
{noformat:title=Internal DNS functionality on guest VM before restarting the
network with cleanup}
[root@vm02 ~]# hostname --fqdn
vm02.isolated.com
[root@vm02 ~]#
[root@vm02 ~]# ping vm01
PING vm01.isolated.com (10.10.1.84) 56(84) bytes of data.
64 bytes from vm01.isolated.com (10.10.1.84): icmp_seq=1 ttl=64 time=2.14 ms
64 bytes from vm01.isolated.com (10.10.1.84): icmp_seq=2 ttl=64 time=1.21 ms
64 bytes from vm01.isolated.com (10.10.1.84): icmp_seq=3 ttl=64 time=1.36 ms
64 bytes from vm01.isolated.com (10.10.1.84): icmp_seq=4 ttl=64 time=1.11 ms
64 bytes from vm01.isolated.com (10.10.1.84): icmp_seq=5 ttl=64 time=1.23 ms
--- vm01.isolated.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 1.116/1.413/2.149/0.378 ms
[root@vm02 ~]#
{noformat}
{noformat:title=Internal DNS functionality on guest VM after restarting the
network with cleanup}
[root@vm02 ~]# hostname --fqdn
hostname: Unknown host
[root@vm02 ~]#
[root@vm02 ~]# ping vm01
ping: unknown host vm01
[root@vm02 ~]#
{noformat}
Upon looking at and testing with the latest commits on master, we found out
that the following commit is causing this issue:
https://github.com/apache/cloudstack/commit/dab9795bf4dba4fb5aea64933a5099eff0f29c8f
Work-around: Reverting the above commit
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