[CLOUDSTACK-10168] VR duplicate entries in /etc/hosts when reusing VM name

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.10.0.0, 4.9.2.0, 4.9.1.0, 4.9.0.1, 4.9.3.0
• Security Level: Public (Anyone can view this level - this is the default.)
• Environment: * ACS4.9.0.1 + ACS4.9.1 + ACS4.9.2 + ACS4.9.3 + ACS4.10.0 / CentOS7 ; * KVM / ACS 4.9.1-4.9.2-4.9.3+4.10.0 / CentOS7 ; * Isolated networks
• Assignee: Rohit Yadav
• Reporter: Dag Sonstebo
• Created: 30/Nov/17 19:17
• Updated: 20/Dec/17 20:40
• Resolved: 20/Dec/17 20:40

Description

Steps to recreate:

• Create VM on isolated network.
• Delete the VM
• Create a new VM with same name.
• Repeat this multiple times.

Result:

• DNS entries are not housekept, allowing for multiples.
• DNSmasq name resolution also returns multiple entries.
• /etc/hosts:

  root@r-15-VM:~# cat /etc/hosts
  ff02::1    ip6-allnodes
  ff02::2    ip6-allrouters
  10.1.1.230            R4VM1
  10.1.1.208            R4VM2
  ::1           localhost ip6-localhost ip6-loopback
  10.1.1.166            R4VM2
  10.1.1.1 r-15-VM data-server
  10.1.1.24              R4VM2
  10.1.1.221            R4VM2
  127.0.0.1              localhost r-15-VM
  

• Name resolving the R4VM2 name:

  [root@R4VM1 ~]# nslookup r4vm2
  Server:                   10.1.1.1
  Address:                10.1.1.1#53
   
  Name:   r4vm2.cs2cloud.internal
  Address: 10.1.1.221
  Name:   r4vm2.cs2cloud.internal
  Address: 10.1.1.208
  Name:   r4vm2.cs2cloud.internal
  Address: 10.1.1.166
  Name:   r4vm2.cs2cloud.internal
  Address: 10.1.1.24
  

Issue Links

• links to: GitHub Pull Request #2366