Sebastian Agudelo Rojas ShebisX

Openssl commands:

openssl genrsa -out self-ssl.key
openssl req -new -key self-ssl.key -out self-ssl.csr -config csr.conf
openssl x509 -req -days 365 -in self-ssl.csr -signkey self-ssl.key -out self-ssl.crt -extensions req_ext -extfile csr.conf

Sign from Root CA: openssl x509 -req -days 365 -extensions req_ext -extfile csr.conf -CA RootCA.crt -CAkey RootCA.key -in self-ssl.csr -out self-ssl.crt

👋 Moved to https://github.com/borekb/docker-path-workaround

Docker in Git Bash / MSYS2 on Windows: path conversion workaround

UPDATE 07/2018: I switched from Git Bash to MSYS2 recently which should be very similar, if not the same, but there some subtle differences which made me realize this is more tricky than I thought and that I don't 100% understand what is going on. If someone can help, please let me know in the comments.

Invoking docker in MSYS2 shell or Git Bash typically fails with complains about paths, for example:

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

Reset the consumer offset for a topic (preview)

Install Kafka

cd /opt
curl -O http://www.gtlib.gatech.edu/pub/apache/kafka/0.11.0.0/kafka_2.11-0.11.0.0.tgz
tar xvzf kafka_2.11-0.11.0.0.tgz
ln -s kafka_2.11-0.11.0.0/ kafka

Edit /usr/lib/systemd/system/kafka-zookeeper.service

Retrieve hosted zones with aws route53 list-hosted-zones then enter the zone Id below:

aws route53 list-resource-record-sets --hosted-zone-id "/hostedzone/xxxxxxxxxxx" | \
   jq -r '.ResourceRecordSets[] | [.Name, .Type, (.ResourceRecords[]? | .Value), .AliasTarget.DNSName?]  | @tsv'

Kafka installation with systemd

0. Create kafka user

sudo adduser kafka
sudo adduser kafka sudo
su -l kafka

1. Download and Install kafka archive

Recovering deleted files in Ubuntu with ext4 filesystem

Recently, I deleted some files by mistake in a Ubuntu machine with an ext4 fs. These notes document the steps I took to get them back.

Important

this procedure assumes that the partition that contained the deleted files is different from the root partition, as that was the scenario with which I had to deal (deleted files were in my home dir). The procedure needs that the partition that contained the files is unmounted, so if the deleted files were in the root partition, the process would be a bit different (e.g. storing the fs journal in a USB stick, using a live CD/USB to boot and issue the commands, etc.)
if something is not clear, you need more information, etc. check the sources below

With that out the way, let's begin.

	ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
	# Don't add passphrase
	openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
	cat jwtRS256.key
	cat jwtRS256.key.pub

	" Don't try to be vi compatible
	set nocompatible

	" Helps force plugins to load correctly when it is turned back on below
	filetype off

	" TODO: Load plugins here (pathogen or vundle)

	" Turn on syntax highlighting
	syntax on