Post-Installation Configuration in OpenStack Configuration Reference - havana

[Stephen Gordon]

Currently the guide recommends setting dynamic_ownership to 0, speaking with one of the libvirt developers - and coincidentally developer of the Nova libvirt driver - (Dan Berrange) it appears there is no reason to do this in OpenStack. In fact setting this option to 0 causes permissions issues when attempting migration.

Since the guide provides no justification for this choice, nor any workaround for the permissions issues, I recommend removing this step and leaving dynamic_ownership as the default (1).

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Built: 2013-11-14T05:18:26 00:00
git SHA: ed950f1acdf5f007fadbe541ba6a1aac393d1574
URL: http://docs.openstack.org/trunk/config-reference/content/configuring-openstack-compute-basics.html

[Alan Pevec (apevec)]

> the guide provides no justification for this choice

Probably docs team picked up advice from the list http://openstack.markmail.org/message/2a2t4al3ivdyb6q6 ?

[Dafna Ron (dron-3)]

This is how I configured my setup to be able to live migrate instances with gluster storage:

1. create a shared mount (I used the existing /var/lib/nova/instances).
2. add to exports : echo '/var/lib/nova/instances *(rw,sync,no_root_squash)' > /etc/exports
3. add/change the following to nova.conf file:
vncserver_listen = 0.0.0.0
live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE
instances_path = /var/lib/nova/instances/
live_migration_bandwidth=0
live_migration_retry_count=30
live_migration_uri=qemu+tcp://%s/system
image_cache_manager_interval=0
glusterfs_mount_point_base=/var/lib/nova/instances/

4. mount the storage:

mount <Server-Name>:/<share_on_storage> /var/lib/nova/instances (mount should work now!)

5. Run: openstack-config --set /etc/nova/nova.conf DEFAULT novncproxy_base_url "http://$SERVICE_HOST:6080/vnc_auto.html
6. change to the following in /etc/libvirt/libvirtd.conf
listen_tls = 0
isten_tcp = 1
auth_tcp = "none"

7. change to the following in /etc/sysconfig/libvirtd :
LIBVIRTD_ARGS="--listen"

8. change the following in /etc/libvirt/qemu.conf :
user = "root"
group = "root"

9. selinux and iptables should be configured correctly

10. restart all relevant services on all of the hosts

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/76744

[Summer Long (slong-g)]

This change is no longer valid; anne removed the CRG page, updated (and in the process, got rid of this issue), and placed back into the Cloud Admin Guide. A search in the doc suite no longer calls up the dynamic_ownership variable. Set to Invalid, since there's no 'notABug' status.