Merge pull request #27433 from SNiemann15/z_p_pipelines

Changes for upcoming IBM Z P pipelines support

Author: ahardin-rh

modules/op-installing-tkn-on-linux.adoc

@@ -10,7 +10,13 @@ For Linux distributions, you can download the CLI directly as a `tar.gz` archive
 
 .Procedure
 
-. Download the link:https://mirror.openshift.com/pub/openshift-v4/clients/pipeline/0.13.1/tkn-linux-amd64-0.13.1.tar.gz[CLI].
+. Download the relevant CLI.
+
+* link:https://mirror.openshift.com/pub/openshift-v4/clients/pipeline/0.13.1/tkn-linux-amd64-0.13.1.tar.gz[Linux (x86_64, amd64)]
+
+* link:https://mirror.openshift.com/pub/openshift-v4/clients/pipeline/0.13.1/tkn-linux-s390x-0.13.1.tar.gz[Linux on IBM Z and LinuxONE (s390x)]
+
+* link:https://mirror.openshift.com/pub/openshift-v4/clients/pipeline/0.13.1/tkn-linux-ppc64le-0.13.1.tar.gz[Linux on IBM Power Systems (ppc64le)]
 
 . Unpack the archive:
 +

modules/op-release-notes-1-2.adoc

@@ -13,14 +13,26 @@
 * Tekton `tkn` CLI 0.13.1
 * Tekton Triggers 0.8.1
 * ClusterTasks based on Tekton Catalog 0.16
+* IBM Power Systems on {product-title} 4.6
+* IBM Z and LinuxONE on {product-title} 4.6
+
+[NOTE]
+====
+Currently you must use the `preview` channel to install {pipelines-title} on IBM Power Systems,  IBM Z, and LinuxONE.
+====
 
 In addition to the fixes and stability improvements, here is a highlight of what’s new in OpenShift Pipelines 1.2.
 
 === Pipelines
 
 * This release of {pipelines-title} adds support for a disconnected installation.
-//* The `PodSecurityPolicy` configuration was changed to enable {pipelines-title} in a restricted environment by running the tekton pipelines controller and tekton pipelines webhook as non-root users.
-//needs confirmation from Gabe if this needs to be added.
+
++
+[NOTE]
+====
+Installations in restricted environments are currently not supported on IBM Power Systems, IBM Z, and LinuxONE.
+====
+
 * You can now use the `when` field, instead of `conditions`, to run a task only when certain criteria are met. The key components of `WhenExpressions` are `Input`, `Operator`, and `Values`. If all the `WhenExpressions` evaluate to `True`, then the task is run. If any of the `WhenExpressions` evaluate to `False`, the task is skipped.
 * Step statuses are now updated if a task run is canceled or times out.
 * Support for Git Large File Storage (LFS) is now available to build the base image used by `git-init`.
@@ -94,6 +106,21 @@ oc patch el/github-listener-interceptor -p '{"metadata":{"finalizers":["foregrou
 oc patch crd/eventlisteners.triggers.tekton.dev -p '{"metadata":{"finalizers":[]}}' --type=merge
 ----
 
+* When you run a multi-arch container image task without command specification on an IBM Power Systems (ppc64le) or IBM Z (s390x) cluster, the `TaskRun` resource fails with the following error:
++
+[source,terminal]
+----
+Error executing command: fork/exec /bin/bash: exec format error
+----
++
+As a workaround, use an architecture specific container image or specify the sha256 digest to point to the correct architecture. 
+To get the sha256 digest enter:
++
+[source,terminal]
+----
+$ skopeo inspect --raw <image_name>| jq '.manifests[] | select(.platform.architecture == "<architecture>") | .digest'
+----
+
 [id="fixed-issues-1-2_{context}"]
 == Fixed issues