Vadiraj K.S vadirajks

Kafka frequent commands

Assuming that the following environment variables are set:

KAFKA_HOME where Kafka is installed on local machine (e.g. /opt/kafka)
ZK_HOSTS identifies running zookeeper ensemble, e.g. ZK_HOSTS=192.168.0.99:2181
KAFKA_BROKERS identifies running Kafka brokers, e.g. KAFKA_BROKERS=192.168.0.99:9092

Start Zookepper and Kafka servers

you need to add example.com as custom auth provider in aws console (cognito/federated)

jq is useful to slice, filter, map and transform structured json data.

brew install jq

The following is from scotthelme.co.uk

with Content Security Policy (CSP) enabled(and a browser that supports it(http://caniuse.com/#feat=contentsecuritypolicy), you can tell the browser that it can only download content from the domains you explicitly allow http://www.html5rocks.com/en/tutorials/security/content-security-policy/ https://www.owasp.org/index.php/Content_Security_Policy I need to change our application code so we can increase security by disabling 'unsafe-inline' 'unsafe-eval'

Do you even need a cluster of postgreses? Why did we choose to create a cluster ourselves?
Why didn’t RDS work for us? Why it might not work for you.
What are other RDS like services out there?

What you need to know within postgres so your data can be streamed down to multiple nodes quick, and efficiently.

A collection of docker online resources. Source

Chronological list of the "systemd for Administrators" series published on 0pointer.net/blog:

	#!/bin/bash
	STACK=$1

	aws ec2 describe-instances \| jq -r \
	'[
	.Reservations[].Instances[]
	\| . as $node
	\| {
	ip: ($node.NetworkInterfaces[0].PrivateIpAddress),
	name: ($node.Tags[] \| select(.Key == "Name").Value),

	node {
	echo 'Results included as an inline comment exactly how they are returned as of Jenkins 2.121, with $BUILD_NUMBER = 1'
	echo 'No quotes, pipeline command in single quotes'
	sh 'echo $BUILD_NUMBER' // 1
	echo 'Double quotes are silently dropped'
	sh 'echo "$BUILD_NUMBER"' // 1
	echo 'Even escaped with a single backslash they are dropped'
	sh 'echo \"$BUILD_NUMBER\"' // 1
	echo 'Using two backslashes, the quotes are preserved'
	sh 'echo \\"$BUILD_NUMBER\\"' // "1"

	# Last updated: 08/24/2916
	#
	# Total instructions available: 18
	#
	# https://docs.docker.com/engine/reference/builder/
	#
	# You can use a .dockerignore file in the same context directory as
	# your Dockerfile to ignore files in the context before sending them
	# to the Docker daemon for building to speed up building.