Sam Bashton bashtoni

Resizing EBS volumes in a Kubernetes cluster

Edit the gp2 storage class to add allowVolumeExpansion: true
Edit the persistent volume claim with the new amount of required storage
Re-create the pod using the persistent volume claim
The pv and pvc should now reflect the new amount of storage

Installing pfSense on KVM in CentOS 8

We download the latest release of pfSense as a gzipped ISO, then extract it and pass it to virt-install to get the VM up and running. Interactive portions of setup are done with virt-install's native console redirection.

Instructions

Install and start libvirtd

sudo dnf -y install libvirt-daemon
sudo systemctl enable --now libvirtd

	#!/bin/bash

	# Compare parameters from two different parameter groups, which can be in different regions or accounts

	PROFILE1=$1
	PG1=$2
	PROFILE2=$3
	PG2=$4

	aws --profile $PROFILE1 rds describe-db-cluster-parameters --db-cluster-parameter-group-name $PG1 --query 'Parameters[].{ParameterName:ParameterName,ParameterValue:ParameterValue}' --output text \| sort >> $$-pg1.txt

	#!/bin/bash

	SERVICE_CODE=cloudformation
	QUOTA_CODE=L-0485CB21 # Number of stacks - find via `aws service-quotas list-service-quotas` or AWS Console
	DESIRED_VALUE=500

	for region in $(aws ec2 describe-regions --query Regions[][RegionName] --output text); do
	aws service-quotas --region $region request-service-quota-increase \
	--service-code $SERVICE_CODE \
	--quota-code $QUOTA_CODE \

	count=0
	for vol in vol-0123abcd vol-1023abcd vol-2013abcd ; do
	device="/dev/xvd$(echo $count \| tr '[0-9]' '[j-z]')"
	aws ec2 attach-volume --volume-id $vol --instance-id i-123456789abc --device $device
	count=$(expr $count + 1)
	done

	aws rds describe-db-cluster-parameters \
	--db-cluster-parameter-group-name $PARAMETER_GROUP_NAME \
	--query 'Parameters[].{ParameterName:ParameterName,DataType:DataType,Source:Source,Description:Description,ParameterValue:ParameterValue} \| [?Source == `user`]'