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authorTim Bielawa <tbielawa@redhat.com>2017-03-07 09:58:44 -0800
committerScott Dodson <sdodson@redhat.com>2017-03-07 19:54:13 -0500
commitf77dc7824917b973b8f92028e4efaea57cc3036c (patch)
treec481a070e8a05188778235add532acf12b9f3368
parent766128bf66cbc45cb2c2539dec0472e7d378a3fb (diff)
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Identify PetSets in 3.4 clusters and fail if any are detected
* PetSets are deprecated in 3.5, replaced with StatefulSets * We can not automatically migrate between the two * Red Hat has never supported PetSets nor do we support StatefulSets * Gracefully handles invalid resource queries if ran against 3.5+ clusters * Fails out with explanation and ref docs if petsets are detected Reference bug: https://bugzilla.redhat.com/show_bug.cgi?id=1428229
-rw-r--r--playbooks/common/openshift-cluster/upgrades/v3_5/validator.yml49
1 files changed, 49 insertions, 0 deletions
diff --git a/playbooks/common/openshift-cluster/upgrades/v3_5/validator.yml b/playbooks/common/openshift-cluster/upgrades/v3_5/validator.yml
index 13fd917c5..9c126033c 100644
--- a/playbooks/common/openshift-cluster/upgrades/v3_5/validator.yml
+++ b/playbooks/common/openshift-cluster/upgrades/v3_5/validator.yml
@@ -16,3 +16,52 @@
tasks:
- name: Check for invalid namespaces and SDN errors
oc_objectvalidator:
+
+ # What's all this PetSet business about?
+ #
+ # 'PetSets' were ALPHA resources in Kube <= 3.4. In >= 3.5 they are
+ # no longer supported. The BETA resource 'StatefulSets' replaces
+ # them. We can't migrate clients PetSets to
+ # StatefulSets. Additionally, Red Hat has never officially supported
+ # these resource types. Sorry users, but if you were using
+ # unsupported resources from the Kube documentation then we can't
+ # help you at this time.
+ #
+ # Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1428229
+ - name: Check if legacy PetSets exist
+ oc_obj:
+ state: list
+ all_namespaces: true
+ kind: petsets
+ register: l_do_petsets_exist
+
+ - name: FAIL ON Resource migration 'PetSets' unsupported
+ fail:
+ msg: >
+ PetSet objects were detected in your cluster. These are an
+ Alpha feature in upstream Kubernetes 1.4 and are not supported
+ by Red Hat. In Kubernetes 1.5, they are replaced by the Beta
+ feature StatefulSets. Red Hat currently does not offer support
+ for either PetSets or StatefulSets.
+
+ Automatically migrating PetSets to StatefulSets in OpenShift
+ Container Platform (OCP) 3.5 is not supported. See the
+ Kubernetes "Upgrading from PetSets to StatefulSets"
+ documentation for additional information:
+
+ https://kubernetes.io/docs/tasks/manage-stateful-set/upgrade-pet-set-to-stateful-set/
+
+ PetSets MUST be removed before upgrading to OCP 3.5. Red Hat
+ strongly recommends reading the above referenced documentation
+ in its entirety before taking any destructive actions.
+
+ If you want to simply remove all PetSets without manually
+ migrating to StatefulSets, run this command as a user with
+ cluster-admin privileges:
+
+ $ oc get petsets --all-namespaces -o yaml | oc delete -f - --cascale=false
+ when:
+ # Search did not fail, valid resource type found
+ - l_do_petsets_exist.results.returncode == "0"
+ # Items do exist in the search results
+ - l_do_petsets_exist.results.results.0['items'] | length > 0