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