dbathgate’s gists

dbathgate / TAS_IWA_AD_SETUP.md

Last active December 18, 2023 20:22

Setup a gMSA to be used the Integrated Windows Auth (IWA) feature of Tanzu Application Service (TAS)

Add-KdsRootKey -EffectiveTime (Get-Date).AddHours(-10)

New-ADGroup -Name "Tas01 Authorized Accounts" -SamAccountName "Tas01Accounts" -GroupScope DomainLocal

dbathgate / arch-install.sh

Last active October 12, 2018 14:34

	# Setup Swap space
	mkswap /dev/sda1
	swapon /dev/sda1

	# Format and mount root volume
	mkfs.ext4 /dev/sda2
	mount /dev/sda2 /mnt

	# Install arch packages (base and base-devel)
	pacstrap /mnt base base-devel

dbathgate / flannel-and-etcd-with-docker.sh

Last active April 20, 2021 18:39

Basic flannel and etcd setup

	#!/bin/bash

	###### Install and run Etcd #############
	curl --location https://github.com/coreos/etcd/releases/download/v3.1.5/etcd-v3.1.5-linux-amd64.tar.gz \| tar -xz

	cp etcd-v3.1.5-linux-amd64/etcd /usr/local/bin/
	cp etcd-v3.1.5-linux-amd64/etcdctl /usr/local/bin/

	mkdir /var/lib/etcd

dbathgate / disk-speed-tests.sh

Last active January 29, 2017 19:48

Disk Speed Tests


	# Writes
	nohup dd if=/dev/zero of=/disk1/file.bin bs=5G count=1 oflag=direct </dev/null > disk1.out &
	nohup dd if=/dev/zero of=/disk2/file.bin bs=5G count=1 oflag=direct </dev/null > disk2.out &

	#Reads
	sync ; echo 3 > /proc/sys/vm/drop_caches

	nohup dd if=/disk1/file.bin of=/dev/null bs=8k </dev/null > disk1_read.out &
	nohup dd if=/disk2/file.bin of=/dev/null bs=8k </dev/null > disk2_read.out &

dbathgate / HadoopWithKerberosAuthentication.java

Created October 21, 2016 03:08

Authenticating to Hadoop with Kerberos and accessing HDFS files in Java

	import java.io.IOException;

	import org.apache.commons.io.IOUtils;
	import org.apache.hadoop.conf.Configuration;
	import org.apache.hadoop.fs.FileSystem;
	import org.apache.hadoop.fs.LocatedFileStatus;
	import org.apache.hadoop.fs.Path;
	import org.apache.hadoop.fs.RemoteIterator;
	import org.apache.hadoop.hdfs.DistributedFileSystem;
	import org.apache.hadoop.security.UserGroupInformation;

dbathgate / vpc-ip-address-to-container-amazon.sh

Last active July 7, 2022 14:13

Assign VPC addresses to Docker containers associated as secondary IP addresses to an ENI in AWS

	# Description: How to assign VPC addresses to Docker containers associated as secondary IP addresses to an ENI in AWS
	# Operating System: Amazon Linux AMI 2016.09.1 (HVM)
	# Prerequisites:
	# - Assign N number of secondary IP addresses to network interface on Docker host
	# - Each new container requires additional assignment of secondary IP addresses
	# - Containers can be launched with --net=none to avoid adding a Docker networked NIC (docker run --net=none -d imageId)
	# Credit to https://github.com/jpetazzo/pipework for steps on linking IP address

	################# Setup Bridge of eth0 ######################
	yum install bridge-utils -y

dbathgate / install-scylla-on-aws-with-dpdk.sh

Last active March 29, 2023 12:44

Installing ScyllaDB in AWS with DPDK enabled

	# Installing ScyllaDB in AWS with DPDK enabled
	# Prerequisites:
	# - Red Hat Enterprise Linux 7.2 (HVM)
	# - Instance type that supports enhanced networking (see http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html#enhanced_networking_instance_types)
	# - Secondary NIC installed via Network Interfaces in AWS
	# - Instance type with 2 hard drives for RAID0 array

	########## DO THIS FIRST ################
	# Fetch the latest linux kernel
	yum update -y

dbathgate / quick-install-scylla-aws.sh

Last active March 25, 2019 02:29

Installing ScyllaDB cluster in AWS with RAID0 array

	# Installing ScyllaDB cluster in AWS with RAID0 array
	# Prerequisites:
	# - CentOS 7 (x86_64) with Updates HVM (available on AWS Marketplace)
	# - Instance type with 2 hard drives for RAID0 array

	SEED="10.0.0.11"
	CLUSTER_NAME="Scylla Cluster"
	PRIVATE_IP=$(curl -s http://169.254.169.254/latest/meta-data/local-ipv4)

	######### Create RAID0 Array ############

dbathgate / quick-install-cassandra-aws.sh

Last active August 25, 2016 14:38

Installing Cassandra 2.1.x cluster in AWS with RAID0 array

	# Installing Cassandra 2.1.x cluster in AWS with RAID0 array
	# Prerequisites:
	# - CentOS 7 (x86_64) with Updates HVM (available on AWS Marketplace)
	# - Instance type with 2 hard drives for RAID0 array

	CLUSTER_NAME="Drb Cluster"
	SEED="10.0.0.11"
	PRIVATE_IP=$(curl -s http://169.254.169.254/latest/meta-data/local-ipv4)

	######### Create RAID0 Array ############

dbathgate / simple-install-scylla-aws.sh

Last active June 28, 2022 09:04

Quick start install of ScyllaDB for Amazon Web Services

	# Quick start install of ScyllaDB for Amazon Web Services
	# Tested using AMI 'CentOS 7 (x86_64) with Updates HVM' available on the AWS Marketplace
	# Script should be run as 'root' user

	# Need a file system formatted in XFS
	# Assumes device is set to '/dev/xvdb'
	umount /dev/xvdb
	mkfs.xfs -f -K /dev/xvdb
	mkdir /var/lib/scylla
	mount /dev/xvdb /var/lib/scylla

Darren Bathgate dbathgate