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Connected Cache Ubuntu preparation — partial notes

In 

Review the captured Ubuntu preparation sequence for a new cache VM. The source cites different Ubuntu versions and uses /dev/sdb as an example disk, so it does not establish the correct target disk or version for another host.

  • Download the Ubuntu ISO (documentation calls for 22.04 but the installation scripts call out 24.04 as supported too)
  • Create a new VM meeting the requirements above.
  • If you need assistance creating a Ubuntu VM please contact CCM IT for help
  • Strongly consider enabling guest integration services to simplify the deployment of your keypair for ssh authentication, and ease deployment of the configuration script files.

Installing and Configuring Ubuntu

  • Follow the normal installer steps to install the server.
  • Assign a static IP (or DHCP reservation)
  • Install all updates.
  • Sudo apt update –y
  • Sudo apt upgrade –y
  • Switch to the linux-azure kernel for best performance and SR-IOV support.
  • Sudo apt install linux-azure
  • Format and mount your cache data disk.
  • You can select the data disk, format and mount it during the server installation - this will be much faster and more straightforward than the commands below
  • Find your disk logical name
  • sudo lshw -C disk and note the logical name of disk1
  • The source uses /dev/sdb in the example commands; it does not establish the correct disk on another host. The subsequent format operation applies to that example target.
  • Format and Partition the entire disk
  • sudo mkfs -t ext4 /dev/sdb
  • Mount the partition
  • sudo mkdir /mnt/mccdata
  • sudo mount /dev/sdb /mnt/mccdata
  • Mount the partition at boot time.
  • Sudo lsblk –f. (Note down the UUID)
  • Sudo vi /etc/fstab
  • Add the following on a new line in fstab
  • UUID=<UUID from lsblk –f command> /mnt/mccdata ext4 defaults 0 0
  • Reboot Server and make sure partition is mounted at boot.