Rachel Rui Liu racheliurui

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CDK cookie cutter to accelerate development.

This document outlines the steps to set up a one tunnel IPSec Site to site VPN on AWS and a VM on another cloud provider (Packet) running Strongswan.

(References:

(This can be any cloud provider. It does not have to be Packet)

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"

This wiki documented how to install and configure Hortonworks HDF Cluster.

Due to environment limitation, the test environment are two Linux servers creating an Ambari cluster with,

Check the verion of HDF components 3.0.0

https://docs.hortonworks.com/HDPDocuments/HDF3/HDF-3.0.0/bk_release-notes/content/ch_hdf_relnotes.html

	#!/usr/bin/env python
	#
	# Example 1: All blocks in list.txt, one CIDR per line
	# cat list.txt \| cidr.py
	#
	# Example 2: Echo CIDR blocks to stdout
	# echo 1.2.3.0/25 1.2.3.128/25 \| cidr.py

	import sys
	from netaddr import *

	Conclusion,

	Zookeeper need at least 2 instances to function as cluster coordinator.

	When start a new publisher, we need to specify the publish-brokers,
	• if all publish-brokers are down but there’s other broker(s) in same replica is up and zookeeper is in function, then the published message will be cached somewhere and re-published when one of the publish-brokers is up
	• if all publish-brokers are down and zookeeper is not in function, then we can’t publish
	For an existing function publisher, when we bring down some of publish-brokers,
	• If all publish-brokers are down and we need to switch to other alive brokers , we need to count on zookeeper