Libvirtd: Using RBD for a CDROM Device

~ JJ Galvez ~ Leave a comment

Mostly a note to self but others may find this snippet useful.
I use the following to install from a disk image stored in RBD. Make sure to fill in your own client username, secret UUID, and monitor addresses.

    <disk type='network' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <auth username='libvirt'>
        <secret type='ceph' uuid='a487c228-159b-4197-8be9-8e0e0d2b8bd4'/>
      </auth>
      <source protocol='rbd' name='rados-pool/diskimage.iso'>
        <host name='monitor-1.address' port='6789'/>
        <host name='monitor-2.address' port='6789'/>
        <host name='monitor-3.address' port='6789'/>
      </source>
      <target dev='hda' bus='ide'/>
      <readonly/>
      <alias name='ide0-0-0'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>

Unable to Access WordPress Dashboard after Upgrades

~ JJ Galvez ~ Leave a comment

I use DreamHost’s DreamPress product for this website, as part of that product there are caching plugins installed. Normally this would be perfectly fine but after an upgrade that caching was preventing me from accessing the dashboard. This post explains how I got past it.

Step 1:
Make sure you are logged in and can see the admin bar at the top of your site. From that bar purge the page and database cache.

Step 2:
From the DreamPress dashboard go identify your SSH credentials and use them to login using SSH.

Step 3:

Once you are logged in using SSH use ‘cd yourdomain.tld’ to access your website directory and execute ‘wp cache flush’ to clear out any remaining issues.

That’s it, go ahead and try to access your dashboard again.

Use GitLab Personal Access Token as Password

~ JJ Galvez ~ Leave a comment

I’m finally writing some more code so I’ve started to make use of my gitlab instance, one of the first things I turned on was 2FA but that also means that checking out through https:// could no longer authenticate. The solution is to visit your profile page, click on the “Access Tokens” tab, and generate a token which can be used as a password.