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Basic usage and ordering

The first script here can be run on golden builds to keep them up to date should ever we need them.

  1. provision_servers : Provisions with common tasks, could be used to bring a bare server up to ceph standard.
  2. provision_cluster : Provisions ceph components osds, mon, rgws and admins.
  3. ceph_sanity_check : Performs sanity checking and ceph related attributes to avoid common known issues.
Examples
 ansible-playbook -i inventory/production provision_servers.yml
 use
  --limit : specific hosts
  --tags : specific role

 ansible-playbook -i inventory/golden-builds.yml provision_golden-builds.yml
 use
  --limit : specific hosts
  --tags : specific role

Details about playbooks

Golden-builds:

Golden builds are kept up to date with any changes that need to be made to the cluster via ansible as well. Incase something needs to be cloned back.

  • gld-blds-mon: this can be used for any Ceph service that isn't an osd
  • gld-blds-osd: This is specifically meant for osd create, main difference being it has 2 networks to set up.

Pre-ceph

Provision Servers

Non-cluster breaking, nothing should be added to this that directly effects cluster health. This is meant for server prep only.

'provision_servers.yml' will run all required tasks on a machine to prepare it for Ceph use It does not harm or effect the cluster in anyway. These tasks set up all preflight checks needed for a node to be considered Ceph ready.

This removes the need for golden build cloning, as the .yml has been tested across golden-builds and the cluste r nodes themselves. All you have to do is add the ip of the new node to the inventory/production hosts file and and ansible will change the state of that system.

Currently there is a few things the ansible does not prepare that exist in the golden build already:

TODO: http://docs.ceph.com/docs/master/start/quick-start-preflight/

  • cephuser creation
  • setting sudoless no password login
    • dynamic:
      • local .ssh/config server access a valid /etc/hosts file
  • known_hosts file in .ssh/
  • visduo require tty
  • remove ceph.repo from prx common with conditional

To get around this clone a golden build which has the above set up already. Change the networking and then run this ansible. These tasks will be added an tested against the golden build at a later time.