3.1 KiB
Role - backup-and-restore
Usage
This Ansible role allows to do the following tasks:
- Install an NFS server.
- Install ReaR.
- Perform a ReaR backup.
This example is meant to describe a very simple use case in which the user needs to create a set of recovery images from the control plane nodes.
First, the user needs to have access to the environment Ansible inventory.
We will use the tripleo-ansible-inventory command to generate the inventory file.
tripleo-ansible-inventory \
--ansible_ssh_user heat-admin \
--static-yaml-inventory ~/tripleo-inventory.yaml
In this particular case, we don't have an additional NFS server to store the backups from the control plane nodes, so, we will install the NFS server in the Undercloud node (but any other node can be used as the NFS storage backend).
First, we need to create an Ansible playbook to specify that we will install the NFS server in the Undercloud node.
cat <<'EOF' > ~/bar_nfs_setup.yaml
# Playbook
# We will setup the NFS node in the Undercloud node
# (we don't have any other place at the moment to do this)
- become: true
hosts: undercloud
name: Setup NFS server for ReaR
roles:
- role: backup-and-restore
EOF
Then, we will create another playbook to determine the location in which we will like to install ReaR.
cat <<'EOF' > ~/bar_rear_setup.yaml
# Playbook
# We install and configure ReaR in the control plane nodes
# As they are the only nodes we will like to backup now.
- become: true
hosts: Controller
name: Install ReaR
roles:
- role: backup-and-restore
EOF
Now we create the playbook to create the actual backup.
cat <<'EOF' > ~/bar_rear_create_restore_images.yaml
# Playbook
# We run ReaR in the control plane nodes.
- become: true
hosts: Controller
name: Create the recovery images for the control plane
roles:
- role: backup-and-restore
EOF
The last step is to run the previously create playbooks filtering by the corresponding tag.
First, we configure the NFS server.
# Configure NFS server in the Undercloud node
ansible-playbook \
-v -i ~/tripleo-inventory.yaml \
--extra="ansible_ssh_common_args='-o StrictHostKeyChecking=no'" \
--become \
--become-user root \
--tags bar_setup_nfs_server \
~/bar_nfs_setup.yaml
Then, we install ReaR in the desired nodes.
# Configure ReaR in the control plane
ansible-playbook \
-v -i ~/tripleo-inventory.yaml \
--extra="ansible_ssh_common_args='-o StrictHostKeyChecking=no'" \
--become \
--become-user root \
--tags bar_setup_rear \
~/bar_rear_setup.yaml
Lastly, we execute the actual backup step.
# Create recovery images of the control plane
ansible-playbook \
-v -i ~/tripleo-inventory.yaml \
--extra="ansible_ssh_common_args='-o StrictHostKeyChecking=no'" \
--become \
--become-user root \
--tags bar_create_recover_image \
~/bar_rear_create_restore_images.yaml