20 Year IT veteran with many domain specialities. GitHub addict.
💬 Ask me about: DevOps, Cloud, Data, Coding, APIs...
✉️ Contact me on LinkedIn:
🔍 Secondary Expertise in:
- 🧑🤝🧑 Sociology
- 💰 Economics
- 📉 Demographics
- Private message me on LinkedIn for the answer to The Root Cause of Western Decline 📉
- as well as excellent resources on everything from jobs & money, to relationships & divorce, to emigration & taxes
This does not include any private repos such as my corporate work eg. where most of my Pull Requests and many of my commits went.
This only includes my public open source repos:
GitHub's limit of 6 pinned repos is far too low - these are what I consider my core open source public repos:
The rest of my original source repos are here.
Pre-built Docker images are available on my DockerHub.
I've worked on far too many technologies to list, but here is a shortlist of some of the more still popular ones you might recognize:
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What have I done... I should have founded a company... 😂
I get asked this a lot.
How the hell did this crazy guy write all these thousands of programs and scripts...
Well... honestly, unless I have something specific to do, this is me 👉 ... often even at midnight. I am simply not a man of moderation. The few things I care about in life I do a lot. Even crazier, the first decade of my career I released almost nothing because GitHub didn't exist when I started, so I have even more code stuck in private repos that I maintained and migrated over years in Subversion, then Mercurial, then Git, but have no time to go back to QA and release. |  |
Writing the above I suddenly got curious enough to quickly rustle up a new Golang program to generate this graph of my public repo commit times to see when I'm most active.
Generated by HariSekhon/GitHub-Graph-Commit-Times:
The TL;DR takeaway from the above graph is don't bother me in the mornings, I take a while to warm up 😉.
I also dip a bit around midday and 9pm as I need to eat once in a while... and sleep a few hours in the very early AM.
I just found out why my DevOps-Bash-tools repo stars went vertical in the graph above. GitHub themselves showed it at the top of their Trending repos page:
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Generated by: HariSekhon/GitHub-Repos-MermaidJS-Gantt-Chart
%%{init:{"topAxis": true, "logLevel": "debug", 'theme': 'dark', 'themeVariables':{'activeTaskBkgColor': '#0000ff', 'activeTaskBorderColor': 'lightgrey', 'critBorderColor': 'lightgrey', 'doneTaskBkgColor': 'grey', 'doneTaskBorderColor': 'lightgrey', 'taskBkgColor': 'black', 'taskBorderColor': 'black', 'taskTextColor': 'white', 'taskTextDarkColor': 'white', 'taskTextLightColor': 'black', 'todayLineColor': 'red' } } }%% gantt dateFormat YYYY-MM-DD title Repositories Gantt Chart Nagios-Plugins : active, 2012-12-30, 2020-12-31 lib : active, 2012-12-30, 2015-12-31 DevOps-Perl-tools : active, 2012-12-30, 2020-12-31 Spotify-tools : active, 2012-12-30, 2020-12-31 SQL-keywords : active, 2013-08-13, 2020-12-31 spark-apps : done, 2015-05-25, 2020-04-02 lib-java : active, 2015-05-31, 2016-12-31 DevOps-Python-tools : active, 2015-10-27, 2020-12-31 pylib : active, 2015-10-27, 2020-12-31 Dockerfiles : active, 2016-01-17, 2022-12-31 DevOps-Bash-tools : active, 2016-01-17, 2025-12-30 Nagios-Plugin-Kafka : active, 2016-06-07, 2017-12-31 HAProxy-configs : active, 2018-06-08, 2022-12-31 DevOps-Golang-tools : active, 2020-04-30, 2024-09-22 Spotify-Playlists : active, 2020-06-29, 2024-09-22 SQL-scripts : active, 2020-08-05, 2025-12-30 Kubernetes-configs : active, 2020-09-16, 2025-12-30 Templates : active, 2019-11-25, 2025-12-30 TeamCity-CI : active, 2020-12-03, 2022-12-31 Terraform : active, 2021-01-18, 2025-12-30 Jenkins : active, 2022-01-17, 2024-09-23 GitHub-Actions : active, 2022-01-17, 2025-12-30 CI-CD : active, 2022-03-25, 2023-12-31 GitHub-Actions-Contexts : active, 2022-08-17, 2022-12-31 Diagrams-as-Code : active, 2023-04-14, 2025-12-30 Template-Repo : active, 2023-04-15, 2025-12-30 Packer : active, 2023-06-02, 2024-09-21 Vagrant-templates : active, 2023-06-12, 2024-09-21 Knowledge-Base : active, 2023-11-22, 2025-12-30 HariSekhon : active, 2024-08-14, 2025-12-30 GitHub-Commit-Times-Graph : active, 2024-09-07, 2024-09-08 GitHub-Repos-MermaidJS-Gantt-Chart : active, 2024-10-02, 2024-10-03 Prometheus : active, 2024-10-08, 2025-12-30 Ansible : active, 2024-10-08, 2025-12-30 This should give you some idea of my long evolution having reached the level of lead engineer and architect by the mid-to-late 2000s.
%%{init:{"topAxis": true, "logLevel": "debug", 'theme': 'dark', 'themeVariables':{'activeTaskBkgColor': '#27ae60', 'activeTaskBorderColor': 'lightgrey', 'critBkgColor': 'blue', 'critBorderColor': 'lightgrey', 'doneTaskBkgColor': 'grey', 'doneTaskBorderColor': 'lightgrey', 'excludeBkgColor': '#eeeeee', 'gridColor': 'lightgrey', 'taskBkgColor': 'black', 'taskBorderColor': 'black', 'taskTextClickableColor': 'white', 'taskTextColor': 'white', 'taskTextDarkColor': 'white', 'taskTextLightColor': 'black', 'taskTextOutsideColor': 'white', 'todayLineColor': 'red' } } }%% gantt title Hari Sekhon's Technology Skills & Experience dateFormat YYYY-MM-DD 20+ years of Skillz to Pay the Billz : 2002-06-01, 2025-12-30 section Operating Systems Linux : crit, 2002-12-01, 2025-12-30 Windows Active Directory : done, 2003-01-01, 2009-11-10 %%Redhat Linux : active, 2002-12-01, 2025-12-30 %%Debian Linux : active, 2003-01-01, 2025-12-30 %%Gentoo Linux : done, 2004-06-01, 2009-11-10 %%Ubuntu Linux : active, 2006-06-01, 2025-12-30 %%Alpine Linux : done, 2016-01-01, 2025-12-30 Mac : active, 2010-02-01, 2025-12-30 section Coding Coding : crit, 2002-12-01, 2025-12-30 Bash : active, 2002-12-01, 2025-12-30 Python : active, 2005-11-01, 2025-12-30 APIs : active, 2006-06-01, 2025-12-30 %%VBScript : done, 2005-05-01, 2009-11-01 Perl : active, 2009-11-13, 2025-12-30 Git : active, 2012-06-01, 2025-12-30 %%Ruby : done, 2009-11-13, 2013-01-31 Java : active, 2013-01-13, 2025-12-30 %%Jython : done, 2013-01-13, 2015-12-31 %%JRuby : done, 2013-03-01, 2013-08-31 %%Scala : done, 2014-01-01, 2015-12-31 Golang : active, 2015-06-01, 2025-12-30 Groovy : active, 2016-01-01, 2025-12-30 %%section Build Systems %%Make : active, 2006-06-01, 2025-12-30 %%Maven : active, 2013-02-01, 2025-12-30 %%SBT : active, 2014-01-01, 2025-12-30 %%Gradle : active, 2014-06-01, 2025-12-30 %%section Version Control Systems %%Subversion : done, 2005-11-13, 2012-06-01 %%Mercurial : done, 2011-06-01, 2013-06-01 %%Git : active, 2012-06-01, 2025-12-30 %%GitHub : active, 2012-12-31, 2025-12-30 section Networking Networking : crit, 2004-03-01, 2025-12-30 %%VPNs : active, 2006-06-01, 2025-12-30 %%Cisco - IOS / NX-OS : done, 2004-03-01, 2025-12-30 %%Juniper - Netscreen / SSG / SRX / ScreenOS / JunOS : done, 2007-01-01, 2013-01-18 %%Netgear : done, 2005-01-01, 2012-12-31 section Load Balancers section Security Security : crit, 2004-10-01, 2025-12-30 %%Kerberos : active, 2006-06-01, 2025-12-30 %%LDAP : active, 2006-06-01, 2025-12-30 section DevOps DevOps : crit, 2005-11-11, 2025-12-30 section Data Data : active, 2005-11-11, 2025-12-30 %%Data Validation : done, 2006-06-01, 2025-12-30 %%Data Science : done, 2013-01-18, 2025-12-30 section Architecture Architecture : crit, 2005-11-11, 2025-12-30 Web-Scale Architecture : active, 2009-11-01, 2025-12-30 MicroServices : active, 2018-10-01, 2025-12-30 Diagrams-as-Code : active, 2023-04-14, 2025-12-30 section Databases (RDBMS) Databases (RDBMS) : crit, 2004-01-01, 2025-12-30 SQL : active, 2004-01-01, 2025-12-30 Microsoft SQL Server : done, 2004-01-01, 2005-10-31 Oracle : done, 2005-11-01, 2009-09-10 MySQL : active, 2007-01-01, 2025-12-30 PostgreSQL : active, 2008-01-01, 2025-12-30 section Web & CDNs Web : crit, 2005-01-01, 2025-12-30 APIs : active, 2006-06-01, 2025-12-30 Load Balancers : active, 2009-07-01, 2025-12-30 %%LVS : done, 2009-01-01, 2009-11-11 %%Foundry - ServerIron XL / 4G : done, 2009-10-13, 2011-11-31 %%F5 BigIP : done, 2010-06-01, 2013-01-18 %%HAProxy : active, 2018-04-01, 2025-12-30 %%Kong : active, 2023-03-01, 2025-12-30 %%Traefik : active, 2023-03-01, 2025-12-30 Web-Scale Architecture : active, 2009-11-01, 2025-12-30 CDNs : active, 2009-12-01, 2025-12-30 %%UlraDNS : done, 2009-11-01, 2012-06-31 %%Cotendo : done, 2012-06-01, 2013-01-13 %%Cloudflare : active, 2020-08-20, 2025-12-30 MicroServices : active, 2018-10-01, 2025-12-30 section Virtualization & Containerization Virtualization : crit, 2005-01-01, 2025-12-30 %%VMware ESX, ESXi, VirtualBox : done, 2005-01-01, 2017-02-16 %%Vagrant : active, 2013-01-01, 2023-12-31 Containerization : crit, 2014-06-01, 2025-12-30 Docker : active, 2014-06-01, 2025-12-30 Kubernetes : active, 2018-09-01, 2025-12-30 MicroServices : active, 2018-10-01, 2025-12-30 ArgoCD : active, 2021-01-01, 2025-12-30 section IaaC & Configuration Management Configuration Management :crit, 2006-01-01, 2025-12-30 Puppet Config Mgmt : done, 2008-09-01, 2014-02-18 Ansible : active, 2014-06-01, 2025-12-30 IaaC :crit, 2008-01-01, 2025-12-30 Terraform :active, 2019-09-01, 2025-12-30 %%Terraform Cloud : active, 2021-09-01, 2022-09-31 %%Kickstart : active, 2008-01-01, 2025-12-30 %%Preseed : active, 2009-01-01, 2025-12-30 %%AutoInstall : active, 2023-01-01, 2025-12-30 section CI/CD CI/CD : crit, 2010-06-01, 2025-12-30 Jenkins : active, 2010-06-01, 2025-12-30 Travis CI : done, 2014-05-01, 2023-05-08 CircleCI : done, 2019-09-01, 2021-12-31 BuildKite : done, 2019-09-01, 2021-12-31 GitHub Actions : active, 2019-09-01, 2025-12-30 %%GitLab : active, 2019-09-01, 2022-12-31 %%Azure DevOps : done, 2019-09-01, 2022-12-31 %%Bitbucket : done, 2019-09-01, 2022-12-31 %%Concourse : active, 2019-11-01, 2020-03-20 %%TeamCity : active, 2020-08-20, 2021-02-31 CloudBuild : active, 2020-08-20, 2023-09-30 section Monitoring Monitoring : crit, 2006-06-01, 2025-12-30 Nagios : active, 2006-06-01, 2019-07-31 OpenTSDB : done, 2016-09-01, 2019-07-31 Grafana : active, 2018-01-01, 2025-12-30 Prometheus : active, 2018-06-01, 2025-12-30 %%Pingdom : done, 2020-08-20, 2023-09-17 %%Datadog : done, 2022-08-20, 2023-09-17 section Big Data Big Data : crit, 2009-11-13, 2019-07-31 Hadoop : done, 2009-11-13, 2019-07-31 %%HDFS : done, 2009-11-13, 2019-07-31 %%MapReduce : done, 2012-06-01, 2019-07-31 Cloudera / Hortonworks : done, 2012-08-01, 2020-03-20 Hive : done, 2013-01-18, 2019-07-31 HBase : active, 2013-02-01, 2019-07-31 Impala : done, 2013-04-01, 2015-06-30 Spark : active, 2014-01-01, 2019-07-31 Kafka : active, 2014-01-01, 2019-07-31 Apache Drill : active, 2014-06-01, 2018-12-31 section NoSQL NoSQL : crit, 2009-11-13, 2025-12-30 HBase : active, 2013-02-01, 2019-07-31 %%MongoDB : done, 2013-06-01, 2013-12-31 Cassandra : active, 2013-08-01, 2025-12-30 Couchbase : done, 2013-11-01, 2024-03-01 section Caching Caching : crit, 2009-11-31, 2025-12-30 Memcached : done, 2009-11-31, 2025-12-30 Redis : active, 2013-03-01, 2025-12-30 section Cloud Cloud : crit, 2012-09-01, 2025-12-30 AWS : active, 2012-09-01, 2025-12-30 GCP : active, 2018-09-01, 2025-12-30 Azure : active, 2020-08-01, 2025-12-30 section Search Search : crit, 2013-03-31, 2025-12-30 Elasticsearch : active, 2013-03-31, 2025-12-30 %%LogStash : done, 2013-03-31, 2025-12-30 %%Fluentd : crit, 2018-03-31, 2025-12-30 %%Kibana : crit, 2013-03-31, 2025-12-30 SolrCloud : done, 2013-04-01, 2024-03-01 New counter (added late which is why the counter at the top is higher):
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