fab: Live migration may fail if the uid and gid of nova are different in the compute nodes

[Vinod Nair]

Live migration will fail if the UID and GID of nova is different in the compute nodes.

All though most of the times it will be same , but users can easily run in this if the user adds any other packages on the computes manually which in turn add a users as in post fix etc on the computes.. Usually the case with yum install or apt-get

Although the provisioning will go through fine with a mismatched UID on the computes, the actual live migration will fail.

Workaround: Ensure that no other packages other than the ones done by fab is added to the system till the live migration provisioning is complete

[Michael Nishimoto (mnishimoto)]

Need to understand how to 'doc' this PR for 1.1.

[Michael Nishimoto (mnishimoto)]

For normal installs, this situation should never come up because the same packages are installed on all compute nodes.

[Jeya ganesh babu J (jjeya)]

The following entries should be added in the /etc/passwd before install_contrail is done

nova:x:500:500::/var/lib/nova:/bin/false
libvirt-qemu:x:501:501:Libvirt Qemu,,,:/var/lib/libvirt:/bin/false
libvirt-dnsmasq:x:502:502:Libvirt Dnsmasq,,,:/var/lib/libvirt/dnsmasq:/bin/false

The following entries should be added in the /etc/group before install_contrail is done

nova:x:500:
kvm:x:501:
libvirtd:x:502:

[Michael Nishimoto (mnishimoto)]

"""libvirt-dnsmasq:x:502:502:Libvirt Dnsmasq,,,:/var/lib/libvirt/dnsmasq:/bin/false"""

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/9128
Submitter: Jeya ganesh babu (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/9129
Submitter: Jeya ganesh babu (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/9128
Submitter: Jeya ganesh babu (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/9130
Submitter: Jeya ganesh babu (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/9131
Submitter: Jeya ganesh babu (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/9128
Submitter: Jeya ganesh babu (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/9130
Committed: http://github.org/Juniper/contrail-fabric-utils/commit/dfdd48ff6a6d577f42bdca4b5dca4b5dfd3486fb
Submitter: Zuul
Branch: R2.20

commit dfdd48ff6a6d577f42bdca4b5dca4b5dfd3486fb
Author: Jeya ganesh babu J <email address hidden>
Date: Tue Apr 14 15:18:16 2015 -0700

Fix nova/libvirt uid for live migration

Closes-bug: #1335344
Issue: With different nova/libvirt uid/gid, the livemigration from
one node to another will not work with permission issues.
Fix: Change the nova/libvirt uid/gid to same across all the compute
and openstack nodes. This requires 'nova_uid_fix = True' to be
added to the testbed.py

Change-Id: I1a4263e1e396c711ac0d84fc73161603739535d6

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/9131
Committed: http://github.org/Juniper/contrail-provisioning/commit/548e625252475402466ea7af4a6815e6dbfbe7d1
Submitter: Zuul
Branch: R2.20

commit 548e625252475402466ea7af4a6815e6dbfbe7d1
Author: Jeya ganesh babu J <email address hidden>
Date: Tue Apr 14 15:21:12 2015 -0700

Fix nova/libvirt uid for live migration

Closes-bug: #1335344
Issue: With different nova/libvirt uid/gid, the livemigration from
one node to another will not work with permission issues.
Fix: Change the nova/libvirt uid/gid to same across all the compute
and openstack nodes. This requires 'nova_uid_fix = True' to be
added to the testbed.py

Change-Id: Ic83d8fac8a639904238ffbbd1dde9d2b42aef23d

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/9128
Committed: http://github.org/Juniper/contrail-provisioning/commit/37215547bab7e17aca989febda3de748d2584f54
Submitter: Zuul
Branch: master

commit 37215547bab7e17aca989febda3de748d2584f54
Author: Jeya ganesh babu <email address hidden>
Date: Tue Apr 14 15:01:44 2015 -0700

Fix nova/libvirt uid for live migration

Closes-bug: #1335344
Issue: With different nova/libvirt uid/gid, the livemigration from
one node to another will not work with permission issues.
Fix: Change the nova/libvirt uid/gid to same across all the compute
and openstack nodes. This requires 'nova_uid_fix = True' to be
added to the testbed.py

Change-Id: Iac9ac973dd287695e71c81fa889dbadf36ef615a

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/9129
Committed: http://github.org/Juniper/contrail-fabric-utils/commit/48cc0155ad6fa54a0604c2d38f0a6fd4709175e7
Submitter: Zuul
Branch: master

commit 48cc0155ad6fa54a0604c2d38f0a6fd4709175e7
Author: Jeya ganesh babu <email address hidden>
Date: Tue Apr 14 15:10:26 2015 -0700

Fix nova/libvirt uid for live migration

Closes-bug: #1335344
Issue: With different nova/libvirt uid/gid, the livemigration from
one node to another will not work with permission issues.
Fix: Change the nova/libvirt uid/gid to same across all the compute
and openstack nodes. This requires 'nova_uid_fix = True' to be
added in the testbed.py

Change-Id: If4d3a9fca807e90f434cd39241d40810b01ffed6