Install ansible

For installing ansible and configuring secret-free login between nodes, this is not covered here. Please refer to Official Documents.

Download ceph-ansible

git clone https://github.com/ceph/ceph-ansible.git
cd ceph-ansible
# Refer to the official document of ceph-ansible http://docs.ceph.com/ceph-ansible/master for branch instructions./
# stable-3.1 Support for Ceph version luminous and mimic. This branch supports Ansible version 2.4.
git checkout stable-3.1

Configure ceph-ansible

cp group_vars/all.yml.sample group_vars/all.yml
cp group_vars/osds.yml.sample group_vars/osds.yml
cp site-docker.yml.sample site-docker.yml

Edit the group_vars/all.yml file. The following information should be adapted according to the actual situation.

generate_fsid: true
monitor_interface: ens5f0
journal_size: 5120
public_network: 192.168.74.0/24
cluster_network: 192.168.74.0/24
ceph_docker_image: "ceph/daemon"
ceph_docker_image_tag: master-d4b8dde-mimic-centos-7-x86_64
containerized_deployment: true
ceph_docker_registry: docker.io
radosgw_interface: ens5f0

Edit the group_vars/osds.yml file. The following information should be adapted according to the actual situation.

osd_scenario: non-collocated
osd_objectstore: bluestore
dmcrypt: false 
devices:
  - /dev/sda
  - /dev/sdb
  - /dev/sdc
dedicated_devices:
  - /dev/sdd
  - /dev/sdd
  - /dev/sdd
bluestore_wal_devices:
  - /dev/sdd
  - /dev/sdd
  - /dev/sdd

Create hosts file, the following information should be adapted according to the actual situation.

[mons]
192.168.74.200 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.201 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.202 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp

[mgrs]
192.168.74.200 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.201 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.202 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp

[osds]
192.168.74.200 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.201 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.202 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp

[rgws]
192.168.74.200 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.201 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp
192.168.74.202 ansible_connection=ssh ansible_ssh_user=root ansible_ssh_pass=Met@2020comp

Start deployment

If the following command fails, the log file defaults to / var/log/ansible.log, you can refer to the error log for processing. (Note: During deployment, docker will be installed by default on each node. This step script does not determine whether the current machine has docker installed. If the target machine has docker installed, there may be errors. The solution is to comment out the corresponding steps to install docker. The corresponding contents are roles/ceph-docker-common/tasks/pre_requisites/pre requisites. Ites.yml.)

ansible-playbook site-docker.yml -i hosts

Destroying Clusters (Caution)

Doker is uninstalled by default. If you don't want to uninstall the docker, comment out the corresponding code in infrastructure-playbooks/purge-docker-cluster.yml.

ansible-playbook infrastructure-playbooks/purge-docker-cluster.yml -i hosts