(node/lsstcam-dc02.cp) do not add image-handling service

Author: glennmorris

hieradata/node/lsstcam-dc02.cp.lsst.org.yaml

@@ -20,3 +20,12 @@ nm::connections:
       method=ignore
 
       [proxy]
+
+## The role ccs-dc adds the image-handling service to all lsstcam-dc*.cp nodes.
+## However, dc02.cp is a special case, where the service should not be present.
+lookup_options:
+  ccs_software::services:
+    merge:
+      strategy: "first"
+
+ccs_software::services:

hieradata/site/cp/cluster/lsstcam-ccs/role/ccs-dc.yaml

@@ -11,6 +11,10 @@ files:
     owner: &ccsipauser 72055
     group: *ccsipauser
 
+## Note: node/lsstcam-dc02.cp should not have image-handling,
+## and so specifically redefines services to be empty.
+## If you want to add more services here, they will also need to be
+## added to that node.
 ccs_software::services:
   prod:
     - {name: "image-handling", user: "ccs-ipa", group: "ccs-ipa", workdir: "/home/ccs-ipa"}