Development Notes

Here are some things I found interesting this week:

Day-0 Day-1 Day-2 Definitions

day-0: customized installation
day-1: customization performed only once after installing a cluster,
day-2: tasks performed multiple times during the life of a cluster

Thanks to a Red Hat colleague for this wonderful definition.

sfdisk tips

I used sfdisk in a PowerVM project. I found these commands helpful

# sfdisk --json /dev/mapper/mpatha
{
   "partitiontable": {
      "label": "dos",
      "id": "0x14fc63d2",
      "device": "/dev/mapper/mpatha",
      "unit": "sectors",
      "partitions": [
         {"node": "/dev/mapper/mpatha1", "start": 2048, "size": 8192, "type": "41", "bootable": true},
         {"node": "/dev/mapper/mpatha2", "start": 10240, "size": 251647967, "type": "83"}
      ]
   }
}

# sfdisk --dump /dev/mapper/mpatha
label: dos
label-id: 0x14fc63d2
device: /dev/mapper/mpatha
unit: sectors

/dev/mapper/mpatha1 : start=        2048, size=        8192, type=41, bootable
/dev/mapper/mpatha2 : start=       10240, size=   251647967, type=83

https://www.computerhope.com/unix/sfdisk.htm

Red Hat OpenShift Container Platform IPI Config for IBM Cloud VPC

I generated an example configuration

additionalTrustBundlePolicy: Proxyonly
apiVersion: v1
baseDomain: ocp-power.xyz
credentialsMode: Manual
compute:
- architecture: amd64
  hyperthreading: Enabled
  name: worker
  platform:
    ibmcloud:
      zones:
      - jp-osa-1 
  replicas: 3
controlPlane:
  architecture: amd64
  hyperthreading: Enabled
  name: master
  replicas: 3
  platform:
    ibmcloud:
      zones:
      - jp-osa-1
metadata:
  name: rdr-test
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OVNKubernetes
  serviceNetwork:
  - 172.30.0.0/16
  zones:
  - jp-osa2-1
platform:
  ibmcloud:
    region: jp-osa
    resourceGroupName: dev-resource-group
    vpcName: ma-compute-vpc
    controlPlaneSubnets: 
      - ma-compute-sn1 
    computeSubnets: 
      - ma-compute-sn1
publish: External
pullSecret: 'XYZWX'
sshKey: ssh-ed25519 XYZWX
fips: false