Appendix A. Sample environment file: creating a Ceph Storage cluster
The following custom environment file uses many of the options described throughout Chapter 2, Preparing Ceph Storage nodes for overcloud deployment. This sample does not include any commented-out options. For an overview on environment files, see Environment Files (from the Advanced Overcloud Customization guide).
/home/stack/templates/storage-config.yaml
parameter_defaults: 1 CinderBackupBackend: ceph 2 CephAnsibleDisksConfig: 3 osd_scenario: lvm osd_objectstore: bluestore dmcrypt: true devices: - /dev/disk/by-path/pci-0000:03:00.0-scsi-0:0:10:0 - /dev/disk/by-path/pci-0000:03:00.0-scsi-0:0:11:0 - /dev/nvme0n1 ControllerCount: 3 4 OvercloudControlFlavor: control ComputeCount: 3 OvercloudComputeFlavor: compute CephStorageCount: 3 OvercloudCephStorageFlavor: ceph-storage CephMonCount: 3 OvercloudCephMonFlavor: ceph-mon CephMdsCount: 3 OvercloudCephMdsFlavor: ceph-mds NeutronNetworkType: vxlan 5
- 1
- The
parameter_defaults
section modifies the default values for parameters in all templates. Most of the entries listed here are described in Chapter 4, Customizing the Storage service. - 2
- If you are deploying the Ceph Object Gateway, you can use Ceph Object Storage (
ceph-rgw
) as a backup target. To configure this, setCinderBackupBackend
toswift
. See Section 4.2, “Enabling the Ceph Object Gateway” for details. - 3
- The
CephAnsibleDisksConfig
section defines a custom disk layout for deployments using BlueStore. - 4
- For each role, the
*Count
parameters assign a number of nodes while theOvercloud*Flavor
parameters assign a flavor. For example,ControllerCount: 3
assigns 3 nodes to the Controller role, andOvercloudControlFlavor: control
sets each of those roles to use thecontrol
flavor. See Section 7.1, “Assigning nodes and flavors to roles” for details.NoteThe
CephMonCount
,CephMdsCount
,OvercloudCephMonFlavor
, andOvercloudCephMdsFlavor
parameters (along with theceph-mon
andceph-mds
flavors) will only be valid if you created a customCephMON
andCephMds
role, as described in Chapter 3, Deploying Ceph services on dedicated nodes. - 5
NeutronNetworkType:
sets the network type that theneutron
service should use (in this case,vxlan
).