Nate Revo therevoman

Change apiVersion from:
```
- apiVersion: v1
```
(or apiVersion: apps.openshift.io/v1)

to:

While trying to set up the k8s submariner project I realized I needed a UDP proxy.

I had to forward 3 ports through my firewall to the server running podman, port 4800, 4501, 501.

udp_backends="compute1 compute2 compute3 compute4 compute5 compute6 compute7"
podman run -d --name ocs_submariner_4800 -p 4800:4800 -e BACKENDS="$udp_backends" -e PORT_BACKEND=4800 -e PORT_LISTEN=4800 instantlinux/udp-nginx-proxy
podman run -d --name ocs_submariner_4501 -p 4501:4501 -e BACKENDS="$udp_backends" -e PORT_BACKEND=4501 -e PORT_LISTEN=4501 instantlinux/udp-nginx-proxy
podman run -d --name ocs_submariner_501 -p 501:501 -e BACKENDS="$udp_backends" -e PORT_BACKEND=501 -e PORT_LISTEN=501 instantlinux/udp-nginx-proxy

Cleaning up is hard to do.

This is borrowed from submariner uninstall

My bash loop for cleaning up iptables entries

for i in `oc get nodes -o name`; do echo $i; oc debug $i -- chroot /host sh -c 'sudo iptables --flush SUBMARINER-INPUT; sudo iptables -D INPUT $(iptables -L INPUT --line-numbers | grep SUBMARINER-INPUT | awk '\''{print $1}'\''); sudo iptables --delete-chain SUBMARINER-INPUT; sudo iptables -t nat --flush SUBMARINER-POSTROUTING; sudo iptables -t nat -D POSTROUTING $(iptables -t nat -L POSTROUTING --line-numbers | grep SUBMARINER-POSTROUTING | awk '\''{print $1}'\''); sudo iptables -t nat --delete-chain SUBMARINER-POSTROUTING'; done

This is an interesting adventure. Needs OpenShift Needs a compute card or GPU Needs Node Feature Discovery (NFD) Operator Needs Storage Needs Subscription entitlement

Lsantillan passed along this blog post. https://kenmoini.com/blog/using-nvidia-gpus-in-openshift/

My list of OpenShift 4 hacks

How do I list all resources in a namespace (no, really ALL of them)

adapted from https://access.redhat.com/solutions/4165791

$ oc api-resources --verbs=list --namespaced -o name | xargs  -I {} bash -c "oc get --show-kind --ignore-not-found -n openshift-storage {}"

	000000 Officially Xerox
	000001 SuperLAN-2U
	000002 BBN (was internal usage only, no longer used)
	000003 XEROX CORPORATION
	000004 XEROX CORPORATION
	000005 XEROX CORPORATION
	000006 XEROX CORPORATION
	000007 XEROX CORPORATION
	000008 XEROX CORPORATION
	000009 powerpipes?

	While attempting an upgrade of a single node cluster created using the assisted installer from candidate-4.8.0 to candidate-4.8.2 everything completed except the machine-config operator. The error looked like:

	``` Master: pool is degraded because nodes fail with "1 nodes are reporting degraded status on sync": "Node sno-assisted is reporting: \"unexpected on-disk state validating against rendered-master-9adaa63f411b981cfffd0aba37e17729: expected target osImageURL \\\"quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:865d35cc4252422e66ff7d638530f61d59326f3a519283d9638813fb730ff4ce\\\", have \\\"quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:369c15034dee19e19aa725de19bfb91c49db28b1c57958104a278e7237eb1d3f\\\"\""```

	Following the comment at the bottom of this Red Hat solution article https://access.redhat.com/solutions/5510891
	I logged into the node via ssh and used the "expected target osImageUrl" in the following command
	`sudo /run/bin/machine-config-daemon pivot quay.io/openshift-release

	While trying to install an OCP v4.6 cluster on 3 bare metal nodes I could not figure out why my bootstrap would listen on 6443 but not on 22623 (machine config).
	After many reboots and much debugging I ran across a stopped pod on the bootstrap node. Looking at the pods logs revealed I had added a maninfest with an invalid manifest version (I built it for a 4.7 cluster but then tried to use it in a 4.6 cluster.

	```[root@ocs-bootstrap ~]# crictl ps -a
	CONTAINER IMAGE CREATED STATE NAME ATTEMPT POD ID
	1254caf68e308 c32243984e519c32cedbe26f1c5b2c486b15788711566590901a4f09df524d8c 45 seconds ago Exited machine-config-controller 7 cab653c29c692```

	Here is the error message
	```# oc logs 1254caf68e308
	error: Missing or in

	// This file was initially generated by Windows Terminal 1.4.3141.0
	// It should still be usable in newer versions, but newer versions might have additional
	// settings, help text, or changes that you will not see unless you clear this file
	// and let us generate a new one for you.

	// To view the default settings, hold "alt" while clicking on the "Settings" button.
	// For documentation on these settings, see: https://aka.ms/terminal-documentation
	{
	"$schema": "https://aka.ms/terminal-profiles-schema",

	git branch -m old_branch new_branch # Rename branch locally
	git push origin :old_branch # Delete the old branch
	git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote

Nate Revo therevoman

My list of OpenShift 4 hacks

How do I list all resources in a namespace (no, really ALL of them)

a little faster