ThinkPad X270 RAM upgrade

Since 32 GiB SO-DIMMs are cheap at the moment, I decided to try an upgrade my ThinkPad X270 from it’s current 16 GiB RAM to 32.

Add an SSH Key to Ubiquiti EdgeRouter

I had a bit of trouble adding an ssh key to my Ubiquiti EdgeRouter 6P. I kept getting

Not a valid key file format (see man sshd) at /opt/vyatta/sbin/ line 96, <$in> line 1.

Turned out that the key needs to:

  • have a comment
  • not have any spaces in the comment
  • be on a line of it’s own in the imported file (e.g. do not add a newline at the end)

for loadkey to accept it.

Including ODROID-HC2 Nodes in My Ceph Cluster

I built a Ceph Luminous cluster containing seven ODROID-HC2 nodes. This cluster also contains some x86 VMs running on my hypervisor.

I use this cluster mainly as a Ceph playground.

For Ceph use I definitely did not want to mess about with serial console on the ODROID-HC2 (there are 7 nodes to install, there could be more). The instructions include getting rid of the need for serial console during first boot.

Ansible and Sailfish OS

Since I seem to set up new Sailfish OS devices at least once a year (because I got myself a new toy) and I am lazy, I set up my current SailfishOS device, a Gemini PDA, up to work with Ansible.

These are my notes on using Ansible with my Gemini PDA running Sailfish OS