jkeam

Installing The OpenShift Advanced Cluster Management (ACM) Observability

This turns on the observability component of ACM. The common use case is for virtualization metrics.

Steps

1. Install ACM using the Ecosystem -> Software Catalog and accept all defaults, wait until done.

   

jkeam

Visualization in OCP Demo

1.  Virtual Machine - click on specific virtual machine
  CPU, Memory, Storage, Network


2.  Click Graphs and talk about PromQL and refresh timer

winweb01
database

jkeam

#!/bin/bash

doctl kubernetes options sizes

# Create cluster
doctl kubernetes cluster create lfe-cluster \
    --region nyc1  \
    --version 1.34.1-do.3 \
    --maintenance-window saturday=02:00 \
    --node-pool "name=worker-pool;size=s-2vcpu-2gb-90gb-intel;count=2;tag=lfecluster;tag=jkeam;tag=clustername:lfe-cluster"

jkeam

#!/bin/bash

echo "Start the cluster before this date"
oc -n openshift-kube-apiserver-operator get secret kube-apiserver-to-kubelet-signer -o jsonpath='{.metadata.annotations.auth\.openshift\.io/certificate-not-after}'
echo ""

echo "Marking nodes as unscheduable"
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}'); do
  echo ${node}
  oc adm cordon ${node}

jkeam

rd.driver.blacklist=nouveau,nouveau.modeset=0,nvidia-drm.modeset=1

jkeam

schemaVersion: 2.2.0
metadata:
  generateName: tl3test1
components:
  - name: development-tooling
    container:
      image: registry.redhat.io/devspaces/udi-rhel9@sha256:bb5baa05f316944ca6df56ad718c368b248e8f4b2488551549b1b13c4ed5844b
      env:
        - name: QUARKUS_HTTP_HOST
          value: 0.0.0.0

jkeam

Chrome OS: Nerd Fonts for the terminal

tutorial

jkeam

#!/bin/bash

PNGLOGOB64=$(base64 -i logo.png)
B64_FULL_LOGO="data:image/png;base64,$PNGLOGOB64"

jkeam

#!/bin/bash

# for fedora server, you might need to expand the root
sudo lvextend -r -L+500g  /dev/mapper/fedora-root

sudo usermod -a -G render,video $LOGNAME
sudo dnf install rocm rocm-devel
  
# test
# rocminfo

jkeam

module grd 1.0;
require {
    type system_dbusd_t;
    type unconfined_service_t;
    type xdm_t;
    class tcp_socket { getattr getopt read setopt shutdown write };
}
allow system_dbusd_t unconfined_service_t:tcp_socket { read write };
allow xdm_t unconfined_service_t:tcp_socket { getattr getopt read setopt shutdown write };