HOS 2.1 Ceph Installation with Network Customisation (6-of-8)

Helion OpenStack 2.1 Ceph Integration

Configure the Block Storage Backend

First we need to install the Ceph client on the deployer node as follows (remembering –ask-vault-pass as I’ve encrypted sensitive data):

cd ~/scratch/ansible/next/hos/ansible
ansible-playbook -i hosts/verb_hosts ceph-setup-deployer-as-client.yml --ask-vault-pass


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Install the Ceph client on all nodes that will be using Ceph services:

cd ~/scratch/ansible/next/hos/ansible
ansible-playbook -i hosts/verb_hosts ceph-client-prepare.yml --ask-vault-pass


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Verify the cinder.conf settings – remember that I replaced the default FSID and GUID – this will need to be applied to the cinder.conf file via it’s associated ansible template ~/helion/my_cloud/config/cinder/cinder.conf.j2.

Give the ceph backend a memorable name – especially if working with multiple backends e.g.

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Carry on down the file to the Ceph section and remove the comments, then fill in the values pertinent to your installation. These are the values defined earlier in ~/helion/my_cloud/config/ceph/user_model.yml . In my case the file should look like this

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To enable Ceph for volume backups carry on down this cinder.conf.j2 template file to the backup section – uncomment it and fill in the appropriate values:

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We can now move on to glance configuration, provided you wish to use Ceph to store glance images. The file we need to modify now is called ~/helion/my_cloud/config/glance/glance-api.conf.j2 -surprise, surprise. Make the following changes

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And change both “stores” and “default_store” as follows

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So we’ve now configured Ceph for cinder volumes, cinder backups and glance images. All that’s left to configure is access to the hypervisor to mount volumes on virtual machines – ~/helion/my_cloud/config/nova/kvm-hypervisor.conf.j2 is the configuration file that we need to amend now

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Now it’s back to HOS 2.X HLM basics when configurations have been changed and need to be redeployed.

I’ve got a couple of additional steps that you may not require if you have not encrypted sensitive data.

cd ~/helion/hos/ansible
git add -A
git commit -m "Configured Ceph Backends for Cinder, Cinder Backup, Glance and Nova"

ansible-playbook -i hosts/localhost config-processor-run.yml --ask-vault-pass


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Build the deployment directory

ansible-playbook -i hosts/localhost ready-deployment.yml --ask-vault-pass


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Run the Cinder reconfigure playbook

cd ~/scratch/ansible/next/hos/ansible
ansible-playbook -i hosts/verb_hosts cinder-reconfigure.yml --ask-vault-pass


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Run the Glance reconfigure playbook

cd ~/scratch/ansible/next/hos/ansible
ansible-playbook -i hosts/verb_hosts glance-reconfigure.yml --ask-vault-pass


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Finally run the Nova reconfigure playbook

cd ~/scratch/ansible/next/hos/ansible
ansible-playbook -i hosts/verb_hosts nova-reconfigure.yml --ask-vault-pass


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It’s now time to start validation of the installation.

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