Updating Stemcells
This topic explains how to update Concourse component VM stemcells separately from updating Concourse itself.
Preferred Stemcell
The preferred stemcell version for Concourse v5.5.8 is Ubuntu Xenial Xenial 621.x.
You can check your stemcell versions by running the command bosh stemcells
.
Procedure
-
Download the latest Xenial 621.x stemcell for your IaaS as follows:
- Browse to Stemcells for Ops Manager (Ubuntu Xenial) on VMware Tanzu Network.
- Select and download the latest Xenial 250.x stemcell version for your IaaS.
-
Upload the stemcell to the BOSH director by running the the following command:
Where1
bosh upload-stemcell PATH-TO-FILE
PATH-TO-FILE
is the local path to the stemcell you downloaded. -
Edit your Concourse manifest
cluster/concourse.yml
to target the stemcell version that you downloaded. By default, the Concourse manifest targets thelatest
stemcell as follows:1 2 3 4 5 6
... stemcells: - alias: xenial os: ubuntu-xenial version: latest ...
To target a specific stemcell version, modify the
version:
setting as follows:Where1 2 3 4 5 6
... stemcells: - alias: xenial os: ubuntu-xenial version: TARGET-VERSION ...
TARGET-VERSION
is the version number of the uploaded stemcell, without quotes. For example,621.23
. -
Trigger an update by running your Concourse deploy script.
After Concourse has re-deployed, all Concourse VMs should be running the new stemcell version.