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https://issues.apache.org/jira/browse/CLOUDSTACK-2620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bharat Kumar resolved CLOUDSTACK-2620.
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Resolution: Fixed
https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=0a69b82
> [Multiple_IP_Ranges] Guest vm's nameserver is not set to VRs guest IP address
> in case of multiple subnets
> ---------------------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-2620
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-2620
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.2.0
> Environment: Build from master branch:
> CloudStack-non-OSS-MASTER-394-rhel6.3.tar.gz
> Reporter: Sanjeev N
> Assignee: Bharat Kumar
> Priority: Critical
> Fix For: 4.2.0
>
>
> [Multiple_IP_Ranges] Guest vm's nameserver is not set to VRs guest IP address
> in case of multiple subnets
> Steps to Reproduce:
> ================
> 1.Bring up CS in basic zone with Xen61 server
> 2.Consume all the guest IP ranges in the existing subnet
> 3.Add guest ip range in new CIDR
> 4.Deploy guest vm
> 5.Verify the nameserver in /etc/resolve.conf in guest vm
> Expected Behaviour:
> =================
> nameserver on guest vm should be set to ip alias address on VR
> Actual Behaviour:
> ==============
> nameserver on guest vm was set to zone level internal DNS ip address instead
> of VR's ip alias address.
> Observations:
> ===========
> Primary ip range: 10.147.43.3-10.147.43.7 GW:10.147.43.1 Netmask:
> 255.255.255.128
> New IP Range : 10.147.43.130-10.147.43.133 GW: 10.147.43.129 Netmask:
> 255.255.255.192
> When the vm is deployed with IP address from the new CIDR , ip alis on VR got
> created with ip address from new CIDR.
> ip alias on the VR was set to 10.147.43.132
> root@r-4-VM:/etc# ifconfig
> eth0 Link encap:Ethernet HWaddr 06:ba:90:00:00:0e
> inet addr:10.147.43.6 Bcast:10.147.43.127 Mask:255.255.255.128
> inet6 addr: fe80::4ba:90ff:fe00:e/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:36018 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1007 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:1919944 (1.8 MiB) TX bytes:46214 (45.1 KiB)
> Interrupt:24
> eth0:18 Link encap:Ethernet HWaddr 06:ba:90:00:00:0e
> inet addr:10.147.43.132 Bcast:10.147.43.191 Mask:255.255.255.192
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> Interrupt:24
> During ip alias creation process dnsmasq.conf was re-generated with new ip
> range and dhcp-option was set as following:
> dhcp-option=6,10.103.128.16,10.103.128.16
> dnsmasq.conf regeneration process is taking DNS values set at zone level and
> replacing with the exiting values in the file. Hence guest vms are getting
> internal DNS ip address as nemeserver.
> Impact:
> ======
> Since guest vms nameserver is set to an IP address other than VR's , vm to vm
> communication using domain names will fail.
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