Volumes of trouble
Disclaimer Juno + CentOS7 (and CentOS6 for the cinder-volume host). Currently this service serves LVM backed cinder volumes over iSCSI.
So, a few days ago we had our customers contacting us. They seemed to have problems with cinder volumes. Some new volumes just didn't attach to VMs. They went to "attaching" and then . . .
The Devil, Juno
A long upgrade
It's hard to find enough relevant Magic the Gathering card names for the blog post. It's much easier to come up with puns. And they're almost as awesome. So here we are.
Anyway, to the point. We're not on Icehouse anymore. Yay.
OpenStack upgrade Icehouse -> Juno
We recently updated our OpenStack . . .
Keystone v3 API and admin token
Basic disclaimer. Still CentOS 6 + Icehouse (hope that's the last time I'll write that).
The OpenStack Python APIs are a bit, uhm, optimistically documented. As in "I'm sure people will figure it out". Well that's why I'm writing this.
I tried to get the keystone v3 API . . .
Migrating from CentOS 6 to CentOS 7
We have run OpenStack for a while, and always on CentOS 6. It's old and virtualization-wise somewhat restricted. Currently we're on OpenStack Icehouse. The Juno packages don't exist for CentOS 6 so we need to make the challenging jump to CentOS 7 before upgrading.
This is mainly a problem for the compute nodes. The . . .
Posted in: centos6migrationsopenstack
Reins of Power
A simple generic v3 keystone admintoken openrc
Some things in OpenStack Keystone (mainly bootstrapping) really needs the admin token. As the admin token should not leave the keystone machines, here is a simple openrc for when you need the admin token.
#!/bin/bash export OS_IDENTITY_API_VERSION=3 export OS_URL=$(grep ^admin_endpoint /etc/keystone/keystone.conf |cut -f 2 -d . . .
Or how I learned to to UEFI iPXE
Tromp the Domains
Trying Identity API v3 and Domains
General disclaimer, I'm talking about OpenStack Juno, but a lot of this applies to Kilo too.
Before getting to this post, you will need your assignment separated from identities as per my previous post.
Keystone and keystone domains
Keystone - the identity management component of OpenStack - has for a while . . .