Add a default A record for each VM

[AlonaKaplan]

make vm.namespace.<cluster>. resolve to one of the VM-reported IP addresses. This may make it a bit easier to find the VM even if the user does not recall its interface names.

What this PR does / why we need it:
make vm.namespace.<cluster>. resolve to one of the VM-reported IP addresses. This may make it a bit easier to find the VM even if the user does not recall its interface names.

This intends to resolve https://issues.redhat.com/browse/CNV-30087

Special notes for your reviewer:
Finalizing PR #60

[oshoval]

Thanks

Worth to describe please the the FQDN includes cluster_name vm.namespace.<cluster_name>. (as mentioned on ticket / done by tests)

[oshoval]

Please consider (it assumes there is a match, because we know exactly how the string is built)

var re = regexp.MustCompile(`IN A ([\d.]+)`)
...

func getIPFromARecord(record string) string {
	return re.FindStringSubmatch(record)[1]
}

or just to capture the IP during the loop here
https://github.com/kubevirt/kubesecondarydns/pull/65/files#diff-a30c82f2c74defbce7c4500610281c5da73d3882f7323c22a5223d1632a2011eR116

[AlonaKaplan]

done.

[AlonaKaplan]

Thanks

Worth to describe please the the FQDN includes cluster_name vm.namespace.<cluster_name>. (as mentioned on ticket / done by tests)

Describe where? It is written in the PR description - "make vm.namespace. resolve to one of the VM-reported IP addresses. "

[oshoval]

Thanks
Worth to describe please the the FQDN includes cluster_name vm.namespace.<cluster_name>. (as mentioned on ticket / done by tests)

Describe where? It is written in the PR description - "make vm.namespace. resolve to one of the VM-reported IP addresses. "

In the PR desc itself please, just to add there that <cluster_name> should be part of the query (PR desc atm doesn't mention <cluster_name> as part of the query)
Unless the servers have a suffix with cluster_name it won't find it.
Even the tests include it.

[oshoval]

/test pull-kubesecondarydns-e2e-k8s

failure not relevant
Error response from daemon: cannot listen on the TCP port: listen tcp4 :34873: bind: address already in use
we might want to try another random port when it creates the sockets

[oshoval]

Thanks

[AlonaKaplan]

/approve

[kubevirt-bot]

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