K mouza: Created page with "== Changing default Storage directory == By Default, Openstack uses the `/var` directory, as the storage for everything Openstack-related. To change this follow the ne..."

2016-01-06T12:31:27Z

Created page with "== Changing default Storage directory == By Default, Openstack uses the <tt>/var</tt> directory, as the storage for everything Openstack-related. To change this follow the ne..."

New page

== Changing default Storage directory ==

By Default, Openstack uses the <tt>/var</tt> directory, as the storage for everything Openstack-related. To change this follow the next steps.

=== 1. Nova Path ===

You can change the nova state path, in which the instances are saved as follows:

<syntaxhighlight>
[root@ma-b71-c7-os ~]# cmsh
[ma-b71-c7-os]% category roles openstack-compute-hosts
[ma-b71-c7-os->category[openstack-compute-hosts]->roles]% use openstack::compute
[ma-b71-c7-os->category[openstack-compute-hosts]->roles[OpenStack::Compute]]% set novastatepath /opt/nova
[ma-b71-c7-os->category[openstack-compute-hosts]->roles[OpenStack::Compute]]% commit
</syntaxhighlight>

After setting the path, please make sure to move all the contents from under <tt>/var/lib/nova</tt> to <tt>/opt/nova</tt> (or the new state path of nova) on all openstack compute hosts. Please note that you can't have multiple state_path per compute host.

It's preferred not to change the nova state directory frequently as it may affect running instances.

=== 2. Glance Path ===

You can change the data directory for glance images as follows:

<syntaxhighlight>
[root@ma-b71-c7-os ~]# cmsh
[ma-b71-c7-os]% device roles master
[ma-b71-c7-os->device[ma-b71-c7-os]->roles]% use openstack::imageapi
[ma-b71-c7-os->device[ma-b71-c7-os]->roles[OpenStack::ImageApi]]% imagebackends
[ma-b71-c7-os->device[ma-b71-c7-os]->roles[OpenStack::ImageApi]->imagebackends]% use filesystem
[ma-b71-c7-os->device[ma-b71-c7-os]->roles[OpenStack::ImageApi]->imagebackends[filesystem]]% set filesystembackendstoragepath /cm/shared/apps/openstack/glance-images
[ma-b71-c7-os->device[ma-b71-c7-os]->roles[OpenStack::ImageApi]->imagebackends[filesystem]]% commit
</syntaxhighlight>

Specifying multiple data directories for glance is not possible at the moment. A workaround for this is to freeze <tt>/etc/glance/glance-api.conf</tt> and add multiple "filesystem_store_datadir" directives specifying a data directory at each line:

<syntaxhighlight>
[root@ma-b71-c7-os ~]# grep "filesystem_store_datadir" /etc/glance/glance-api.conf

filesystem_store_datadir=/cm/shared/apps/openstack/glance-images
filesystem_store_datadir=/opt/glance/images
</syntaxhighlight>

=== 3. Cinder Block Storage ===

For the cinder block storage, you can modify the NFS shares as follows:

<syntaxhighlight>
[ma-b71-c7-os->device[ma-b71-c7-os]->roles[OpenStack::Volume]->volumebackends[nfs]]% show
Parameter Value
-------------------------------- ------------------------------------------------
Name nfs
Revision
Type OpenStackVolumeBackendNFS
Volume driver cinder.volume.drivers.nfs.NfsDriver
NFS disk util df
NFS mount point base /var/lib/cinder/volumes
NFS sparsed volumes yes
NFS shares master:/cm/shared/apps/openstack/cinder-volumes
NFS shares config /var/lib/cinder/nfsshare
</syntaxhighlight>

Bright:Openstack-config - Revision history

K mouza: Created page with "== Changing default Storage directory == By Default, Openstack uses the /var directory, as the storage for everything Openstack-related. To change this follow the ne..."

K mouza: Created page with "== Changing default Storage directory == By Default, Openstack uses the `/var` directory, as the storage for everything Openstack-related. To change this follow the ne..."