Convert from Kolla Ansible to Ceph Ansible

How to run

These instructions assume that your ceph-ansible folder is already set up and you followed ceph-ansible docs before. Hence we start with cd command. Make sure you have have gone through checklist before you run the playbooks.

 # cd ceph-ansible
 # wget https://github.com/openstack/kolla-ansible/raw/train-em/ansible/library/kolla_docker.py -P library
 # wget https://raw.githubusercontent.com/canozyurt/migrate-kolla-to-ceph-ansible/master/migrate.yml
 # wget https://raw.githubusercontent.com/canozyurt/migrate-kolla-to-ceph-ansible/master/migrate-osds.yml
 # ansible-playbook migrate.yml
 # ansible-playbook migrate-osds.yml

OR

 # docker build -t migrate-ceph .
 # docker run -it --rm --network host -e ANSIBLE_HOST_KEY_CHECKING=False \
 #     -v $(PWD)/inventory:/app/ceph-ansible/inventory \
 #     -v $(PWD)/group_vars:/app/ceph-ansible/group_vars \
 #     -v $(HOME)/.ssh:/root/.ssh migrate-ceph
 # ansible-playbook -i inventory migrate.yml
 # ansible-playbook -i inventory migrate-osds.yml

migrate.yml migrates mon,mgr,mds,nfs,rgw services respectively. migrate-osds.yml migrates osd services.

Checklist

• Make sure that current ceph version is Nautilus and you are using stable-4.0 branch for ceph-ansible.
• Make sure that your ceph-ansible clone is not suffering from this issue and nfs role works fine.
• Inventory and all.yml is configured and ceph-ansible can deploy a healthy cluster with correct NIC bindings and desired ceph.conf.
• containerized_deployment in all.yml is set to true.
• generated_fsid in all.yml is set to false
• fsid in all.yml is filled with your current ceph fsid deployed with kolla.
• Docker package names are set to match with kolla settings.
• ntp_service_enabled is disabled (or enabled if you don't have one already)
• RGW ports may differ in both tools. If so, set rgw ports properly.
• RGW Keystone integration is present in rgws.yml

For example configuration, you can refer to all.yml, rgws.yml and inventory

Test Environment

This is an automated dev environment for Ceph deployment tool conversion. It deploys Openstack Train with Ceph on Vagrant, and tries to takeover deployed Ceph with ceph-ansible. Tested on Ubuntu 18.04. Vagrant deploys generic/ubuntu1804 boxes.

Warning

Don't follow these instruction on production. This is meant to be a PoC, run on an ephemeral VM, to share experience. Don't let virtualenv fool you: It's there to clean up easily, not to protect your environment.

Installation

Deploying Openstack

 # git clone https://github.com/canozyurt/migrate-kolla-to-ceph-ansible --recursive
 # sudo apt update
 # sudo apt install make -y
 # cd ./migrate-kolla-to-ceph-ansible
 # make install-dependencies
 # vagrant up
 # make

Convert to ceph-ansible

 # make migrate
 # make migrate-osds

Above commands run migrate.yml and migrate-osds.yml playbooks respectively. 185.199.110.133