Murali Reddy created CLOUDSTACK-9598:
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Summary: wrong defaut gateway in guest VM with nics in isolated
and a shared network
Key: CLOUDSTACK-9598
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9598
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Affects Versions: 4.9.0
Reporter: Murali Reddy
Fix For: 4.10.0.0, 4.9.1.0
When a guest instance is created with nic's in a isolated network and a shared
network (with just DHCP and DNS), with isolated network as default network,
DHCP lease on shared network from the shared network VR has wrong gateway.
gateway is pointed to the virtual router IP.
/etc/cloudstack/dhcpentry.json in shared network VR will have default gateway
set to 0.0.0.0
root@r-11-VM:~# cat /etc/cloudstack/dhcpentry.json
{
"10.6.9.165": {
"default_entry": false,
"default_gateway": "0.0.0.0",
"dns_adresses": "10.1.1.1",
"host_name": "VM-fce34d73-dc99-4559-b077-64711509907a",
"ipv4_adress": "10.6.9.165",
"ipv6_duid": "00:03:00:01:06:5a:da:00:00:6a",
"mac_address": "06:5a:da:00:00:6a",
"type": "dhcpentry"
},
"id": "dhcpentry"
DhcpCommand network element command sent from the management server is like
below with "defaultRouter":"0.0.0.0"
2016-11-15 19:15:29,319 DEBUG [c.c.a.t.Request]
(Work-Job-Executor-25:ctx-a9aca0bb job-69/job-70 ctx-82c3fd7e) (logid:6ca37cdb)
Seq 2-4650811040190170578: Sending { Cmd , MgmtId: 7150818625286, via:
2(trl-202-k-cs49-mreddy-kvm2), Ver: v1, Flags: 100011,
[{"com.cloud.agent.api.routing.DhcpEntryCommand":{"vmMac":"06:5a:da:00:00:6a","vmIpAddress":"10.6.9.165","vmName":"VM-fce34d73-dc99-4559-b077-64711509907a","defaultRouter":"0.0.0.0","defaultDns":"10.1.1.1","duid":"00:03:00:01:06:5a:da:00:00:6a","isDefault":false,"executeInSequence":false,"accessDetails":{"zone.network.type":"Advanced","router.guest.ip":"10.6.9.164","router.ip":"169.254.2.18","router.name":"r-11-VM"},"wait":0}}]
}
NIC details in the DB for the nic in the shared network has correct gateway.
Gateway is set to 0.0.0.0, for every non-default nic.
In case where shared network is non default network, then guest VM will end up
treating VR in the shared network as gateway instead of actual shared network
gateway.
[1]
https://github.com/apache/cloudstack/blob/4.9/server/src/com/cloud/network/router/CommandSetupHelper.java#L224
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