- Ansible playbook to deploy the REST TNG stack on OpenStack
This playbook will build an Ensembl REST TNG cluster. It will install an haproxy router instance, a mysql server, and one or more catalyst, TaRK, and mod_faidx workers depending on your configuration. The machines will be auto-configured for their role and /etc/hosts will be updated so all machines know about each other.
- Ansible 2.3.x or above and the python shade module
- Access to an OpenStack instance
- clouds.yaml file configured to access the stack
- A Debian Stretch or Ubuntu Xenial image loaded on to OpenStack
- A volume containing mysql databases for one or more Ensembl releases and the TaRK database
- A key pair to use
Edit the file group_vars/all/vars.yml for your local OpenStack configuration
Edit the file group_vars/faidx_workers/vars.yml if desired to change the fasta files that will be available from mod_faidx
Add entries to your ~/.ssh/config for accessing the cluster via the haproxy jump host that will be created:
Host 1.2.3.4 # <-- your floating ip
User debian # <-- default username for your image
IdentityFile ~/.ssh/rest.pem # <-- private key specified in group_vars/all/vars.yml
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
Host 192.168.0.* # <-- private subnet in your OpenStack network
HostName %h
User debian # <-- name username from above
ProxyCommand ssh -W %h:%p 1.2.3.4 # <-- floating ip
IdentityFile ~/.ssh/rest.pem # <-- private key
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
Once configured you should now be able to build the cluster with:
ansible-playbook provision_stack.yml
Once built you should have urls available such as
- http://1.2.3.4/lookup/gene/?id=ENSG00000198001&expand=1
- http://1.2.3.4/sequence/region/GRCh38
- http://1.2.3.4/sequence/sets/
- http://1.2.3.4/sequence/region/GRCh38?location=19%3A10000-15000&location=X%3A10000-11000#
With all the above configurations still in place, run the playbook:
ansible-playbook delete_stack.yml