This topic describes how to update stemcells for External Workers. These stemcells need to be updated to ensure compatibility with your version of Concourse.
To update stemcells, do the following:
/cluster/external-worker.yml and look for the
version property in the
# before ... stemcells: ... version: OLD-STEMCELL-VERSION ...
Update the version to the recommended stemcell version for your version of Concourse.
# after ... stemcells: ... version: 621.74 ...
For Concourse v6.7.3, VMware recommends that you use a 621.x stemcell.
Run your deploy script to trigger the update.