Ceph作为OpenStack后端存储

Total PGs = (Total_number_of_OSD * 100) /max_replication_count）

1、  Create pool for OpenStack

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pg=256 ceph osd pool create volumes $pg   #disk_pool ceph osd pool create images $pg    #image_pool ceph osd pool create vms $pg      #host_pool ceph osd pool create backups $pg   #backup_pool

 

2、  setup ceph client authentication

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ceph auth get-or-create client.cinder mon'allow r' osd 'allow class-read object_prefix rbd_children, allow rwxpool=volumes, allow rwx pool=vms, allow rx pool=images' ceph auth get-or-create client.glance mon'allow r' osd 'allow class-read object_prefix rbd_children, allow rwxpool=images' ceph auth get-or-createclient.cinder-backup mon 'allow r' osd 'allow class-read object_prefixrbd_children, allow rwx pool=backups'

 

3、Add the keyringsfor client.cinder, client.glance, and client.cinder-backup to the appropriatenodes and change their ownership

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ceph auth get-or-create client.glance | ssh{your-glance-api-server} sudo tee /etc/ceph/ceph.client.glance.keyring ssh {your-glance-api-server} sudo chownglance:glance /etc/ceph/ceph.client.glance.keyring ceph auth get-or-create client.cinder | ssh{your-volume-server} sudo tee /etc/ceph/ceph.client.cinder.keyring ssh {your-cinder-volume-server} sudo chowncinder:cinder /etc/ceph/ceph.client.cinder.keyring

 

4、  Nodes running nova-compute need the keyring file for thenova-compute process

1	ceph auth get-or-create client.cinder | ssh{your-nova-compute-server} sudo tee /etc/ceph/ceph.client.cinder.keyring

 

5、  Create a temporary copy of the secret key on the nodes runningnova-compute:

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ceph auth get-key client.cinder > client.cinder.key ceph auth get-key client.cinder | ssh{your-compute-node} tee client.cinder.key uuidgen 4f859b95-406e-49f6-9ff8-d6e04f7ba1ef cat > secret.xml <<EOF <secret ephemeral='no' private='no'>  <uuid>4f859b95-406e-49f6-9ff8-d6e04f7ba1ef</uuid>  <usage type='ceph'>    <name>client.cinder secret</name>  </usage> </secret> EOF sudo virsh secret-define --file secret.xml sudo virsh secret-set-value --secret e05983be-9251-44cb-9738-198bf9ec2d7e --base64 $(cat client.cinder.key)&& rm client.cinder.key secret.xml

 

6、  Configuring Glance

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vi /etc/glance/glance-api.conf [DEFAULT] ... default_store=rbd rbd_store_user=glance rbd_store_pool=images show_image_direct_url=True ...

 

7、  Configuring Cinder

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vi /etc/cinder/cinder.conf [DEFAULT] ... volume_driver=cinder.volume.drivers.rbd.RBDDriver rbd_pool=volumes rbd_ceph_conf=/etc/ceph/ceph.conf rbd_flatten_volume_from_snapshot=false rbd_max_clone_depth=5 glance_api_version=2 rbd_user=cinder rbd_secret_uuid=e05983be-9251-44cb-9738-198bf9ec2d7e

 

8、  Configuring Cinder Backup

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vi /etc/cinder/cinder.conf [DEFAULT] ... backup_driver=cinder.backup.drivers.ceph backup_ceph_conf=/etc/ceph/ceph.conf backup_ceph_user=cinder-backup backup_ceph_chunk_size=134217728 backup_ceph_pool=backups backup_ceph_stripe_unit=0 backup_ceph_stripe_count=0 restore_discard_excess_bytes=true

 

9、  Configuring Nova

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vi /etc/nova/nova.conf [DEFAULT] ... libvirt_images_type=rbd libvirt_images_rbd_pool=vms libvirt_images_rbd_ceph_conf=/etc/ceph/ceph.conf rbd_user=cinder rbd_secret_uuid=e05983be-9251-44cb-9738-198bf9ec2d7e libvirt_inject_password=false libvirt_inject_key=false libvirt_inject_partition=-2 libvirt_live_migration_flag="VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE,VIR_MIGRATE_PERSIST_DEST"

10、  Restart OpenStack

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service openstack-glance-api restart service openstack-nova-compute restart service openstack-cinder-volume restart

10、Test

本文转自Jacken_yang 51CTO博客，原文链接：http://blog.51cto.com/linuxnote/1789924，如需转载请自行联系原作者