Add vagrantfile and ansible playbook for setting up POC demo cluster about tendrl-ansible

[shirshendu]

That repo basically depends on custom boxes uploaded to a file server (they contain the previous release of tendrl); but apart from that one downside, there's a bunch of stuff setup through ansible, the way we need it for POCs. I hope to be depending on centos/7 instead, and adding dependencies. Better for the longer run.

It does have tendrl installation, but only the previous release. For running other versions (and git branches), we also need to add injection of code from the host into the right place in the vagrant machines. Latest release should be straightforward though, thanks to the tendrl-copr role.

My current need is only for a local dev-VM for tendrl-api, and i'll be structuring my work as such (i.e., not deploying the tendrl-server, and keeping etcd, tendrl-api, tendrl-ui, graphana etc on the host). Once that is done, let us adapt it to the general use-case for reliable VMs for testing.

[mbukatov]

When starting the work on playbook for vagrant, I would suggest to check if etcd_ip_address variable could be set by using default ansible interface facts like this: "{{ ansible_default_ipv4.address }}" for Tendrl Server or "{{ hostvars[groups['tendrl-server'][0]].ansible_default_ipv4.address }}" for Tendrl Storage Nodes, and only if that doesn't not work, specify particular interface via ansible_eth1.ipv4.address.

[mbukatov]

Based on @japplewhite 's usmqe/usmqe-setup#76 (comment) we could also add that:

If you call the playbook as follows:
ansible-playbook -u vagrant -b site.yml
it will automatically overload the user and attempt to use sudo with no change in the playbooks. So there is no need to change from root. We just need to document that as a workaround.

[mbukatov]

Since tendrl-ansible doesn't contain any setup for gluster cluster (which is obviously out of scope for tendrl ansible, complicated and large task itself), this POC libvirt/vagrant demo setup is blocked by:

• Tendrl/node-agent#467 (when Tendrl is installed, it's too late to create a gluster cluster for import)

[mbukatov]

There are some vagrant projects for POC Tendrl setup:

• https://github.com/shirshendu/multinode-glusterfs-with-tendrl-vagrant
• https://github.com/julienlim/multinode-glusterfs-with-tendrl-vagrant

See current work at shirshendu/multinode-glusterfs-with-tendrl-vagrant#1

We may drop vagrant file from tendrl-ansible, which is not maintained anyway, and promote work of @julienlim and @shirshendu into Tendrl org on github when ready. Would that make sense?

[julienlim]

@mbukatov I suggested to @shirshendu that we start with https://github.com/red-hat-storage/RHGS-vagrant as Daniel Messer has done a nice job setting it up with minimal config for POC's. It just needs to be tweaked to use tendrl.

[mbukatov]

Closing, as the vagrant setup will be maintained in a separate repository.