hiepndd

My Elasticsearch cheatsheet with example usage via rest api (still a work-in-progress)

Shortlinks:

• Cluster Health
  • Index Level
  • Shard Level
• Nodes Overview
• Indices Overview
• Cluster Maintenance

hiepndd

# https://github.com/rama-nallamilli/kafka-prometheus-monitoring
# https://github.com/Yolean/kubernetes-kafka/blob/master/prometheus/10-metrics-config.yml

lowercaseOutputName: true
rules:
- pattern : kafka.network<type=Processor, name=IdlePercent, networkProcessor=(.+)><>Value
- pattern : kafka.network<type=RequestMetrics, name=RequestsPerSec, request=(.+)><>OneMinuteRate
- pattern : kafka.network<type=SocketServer, name=NetworkProcessorAvgIdlePercent><>Value
- pattern : kafka.server<type=ReplicaFetcherManager, name=MaxLag, clientId=(.+)><>Value
- pattern : kafka.server<type=BrokerTopicMetrics, name=(.+), topic=(.+)><>OneMinuteRate

hiepndd

FWIW: I'm not the author of the content presented here (which is an outline from Edmond Lau's book). I've just copy-pasted it from somewhere over the Internet, but I cannot remember what exactly the original source is. I was also not able to find the author's name, so I cannot give him/her the proper credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

hiepndd

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

hiepndd

Media

https://github.com/mohanson/gameboy - gameboy emulator
https://github.com/JakeStanger/mpd-discord-rpc - discordrpc for mpd
https://github.com/spieglt/nestur - nes emulator
https://github.com/cristicbz/rust-doom - doom renderer
https://github.com/Aloxaf/silicon - a tool for creating pretty images of your source code for sharing
https://github.com/Rigellute/spotify-tui - a tui for spotify
https://github.com/atanunq/viu - view images in the terminal

hiepndd

-- timezone abrev list
 select * from pg_timezone_names ; 

-- set timezone TO 'pg_timezone_names.name'
set timezone TO 'posix/Africa/Tunis'; --(GMT+01)
set timezone TO 'GMT'; --(UTC/GMT)

-- read current timezone:
SELECT  current_setting('TIMEZONE')

hiepndd

  // For all the confusing Prometheus configuration and
  // regular expressions,
  // explained in examples.


  // Remember, there are default values for each item if it's missing.
  // regex is (.*),
  // replacement is $1,
  // separator is ;
  // ,and action is replace 

hiepndd

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

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hiepndd

git tag -am "annotation goes here" tagname_goes_here # cut a tag
git tag -d tagname_goes_here                         # burn it
git tag -am "annotation goes here" tagname_goes_here # cut another tag
git push --tags                                      # push tags to remote
git push origin :refs/tags/tagname_goes_here         # delete tag from remote

hiepndd

Helm cheatsheet

• Helm cheatsheet
  • Get started
  • Struture
  • General Usage
  • Template
  • Hooks