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From Cloud List <cloud-l...@sg.or.id>
Subject ACS - Some VMs unable to get DHCP IP from VR
Date Mon, 07 Nov 2016 12:44:51 GMT
Hi,

After our upgrade from CloudStack 4.2 to 4.8.1.1, we noted that some (but
not all) of our VMs are not able to get DHCP from the VR. This gives
problem when the VM is restarted and cannot get up and running because
unable to get IP.

I logged in to the VR and found below messages showing that the DHCP server
is ignoring the request from the VM.

Nov  7 12:19:43 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:19:52 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:05:64:01:13:d3
ignored
Nov  7 12:19:53 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:20:04 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:20:11 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:05:64:01:13:d3
ignored
Nov  7 12:20:22 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:20:30 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:20:42 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:21:02 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored
Nov  7 12:21:19 dnsmasq-dhcp[29938]: DHCPDISCOVER(eth0) 06:44:da:01:13:98
ignored

Any reason why the dnsmasq service ignored the request from the VM and how
can we fix that?

At the moment, the only workaround we can do is to configure the IP address
statically to the servelet, which is not practical.

Any advice is greatly appreciated.

Thank you.

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