Noel Jarencio shearluck

DevOps - AWS / Azure

shearluck / gist:c6a801a043a3fc5f954762b20ca1372d

Created June 9, 2020 09:39

qemu-create-attach-disk.sh

	qemu-img create -f qcow2 /mount/path/disk.qcow2 -o preallocation=metadata 20G
	sudo virsh attach-disk domain --source /mnt/files/VM/work/minikube.qcow2 --target vdc --cache none --persistent

shearluck / password_generator.sh

Created May 11, 2020 08:34

Linux random password generator

	LEN=$1

	< /dev/urandom tr -dc _A-Z-a-z-0-9 \| head -c$LEN

shearluck / cloud-init.sh

Created April 23, 2020 09:20 — forked from ebal/cloud-init.sh

Cloud-init example using a Generic Cloud CentOS-7 on a libvirtd qmu/kvm lab

	#!/bin/sh

	if [ "$EUID" -ne 0 ]; then
	echo -e "\nPlease run as root\neg. sudo $0 \n"
	exit
	fi

	GITHUB_USERNAME="ebal"

	cd `mktemp -d`

shearluck / qemu-mac-host.sh

Last active December 3, 2019 15:19

arch-mac-qemu

	qemu-system-x86_64 -m 2048 -accel hvf -smp 2 -net nic -net user -device VGA,vgamem_mb=128,edid=on,xres=1680,yres=1050 -hda arch.img

	# Mac host, access usb
	-device pci-ohci

	# Mac host, access usb raw storage device
	-hdb /dev/disk2

shearluck / docker-registry.sh

Last active May 15, 2019 10:53

	mkdir .auth

	# Create basic auth
	docker run \
	--entrypoint htpasswd \
	registry:2 -Bbn testuser testpassword > .auth/htpasswd

	# Make sure to serve this into an HTTPS load balancer/frontend
	docker run -d \
	-p 5000:5000 \

shearluck / pod.yaml

Last active October 17, 2022 07:44

Kubernetes k3s, EC2 spot instance, ECR, Private registry

	apiVersion: v1
	kind: Pod
	metadata:
	name: <app-name>
	labels:
	app: <app-name>
	spec:
	containers:
	- name: <app-name>
	image: <account>.dkr.ecr.us-west-2.amazonaws.com/<app-name>:latest

shearluck / k3s-setup.sh

Created April 30, 2019 02:40

K3s Centos 7 setup

	echo 'net.netfilter.nf_conntrack_max=65528
	net.ipv4.netfilter.ip_conntrack_max=65535' >> /etc/sysctl.conf

	iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

	sysctl -p /etc/sysctl.conf

	curl -sfL https://get.k3s.io \| sh -

shearluck / bastion-spot-instance.sh

Created April 29, 2019 03:35

	# How many hours
	DURATION_HRS=1
	let DURATION_MINS=$DURATION_HRS*60

	aws ec2 request-spot-instances --block-duration-minutes $DURATION_MINS --launch-specification file://bastion-spot-specs.json

shearluck / ec2-authorize-ssh-myip.sh

Created April 29, 2019 03:33

SSH authorize my IP

	MYIP=`curl -s ipinfo.io/ip`
	aws ec2 authorize-security-group-ingress --group-id $SG_ID --ip-permissions IpProtocol=tcp,FromPort=22,ToPort=22,IpRanges="[{CidrIp=$MYIP/32}]"

shearluck / make-lvm.sh

Last active April 19, 2019 17:09

Make LVM

	# Wipe existing partition
	sudo wipefs -a /dev/sdX

	# Create PV
	sudo pvcreate /dev/sdX

	# Create VG
	sudo vgcreate VolGroup00 /dev/sdX

	# Create LV