Categories

Github Torrent Action

Here’s something I’ve been meaning to get to for a while, and finally got a chance. Enter GitHub Torrent Action!

Jenkins Job Builder Github action

When codifying Jenkins jobs, you have two options: Job DSL + seed job. More native to Jenkins, but requires Groovy scripting. Jenkins Job Builder. A third party solution, but configs are in yaml, so it’s easier to get started.

Curating cron emails

As you might know, cron captures all the output of executed tasks and mails them to the user under which the tasks are executed. The problem is that often this mail just piles up somewhere in /var/mail directory, without being ever reviewed. It’s not a good practice, akin to sweeping the trash under the carpet.

Using Jenkins as an automation dashboard - Part 2

Continuing on using Jenkins as a dashboard, I’d like to highlight some things that are essential to ensure reliable job execution:

Ansible filter list based on attributes

Suppose we want to find only users who have a middle name from this: users: - name: John surname: Johnson - name: Alice surname: Wonderland - name: Bob surname: Rabbit middlename: Bebop Old, verbose way would be: - debug: msg="" loop: "" when: item.middlename is defined This results in “s...

Forgotten KeePassX password

Stages of having forgotten KeePassX master password:

Using Jenkins as an automation dashboard - Part 1

Speeding up Ansible

Ansible playbook execution may take quite a while when connection is not configured properly. Here’s a checklist to ensure your Ansible is as fast as possible:

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

Zimbra split horizon DNS on EC2 with Unbound

Email server behind NAT is a pain, but it can be further aggravated if your email server has a dynamic IP address. Which is the case with EC2. Granted, it will only change on stop/start of the instance, but still. Here’s a recipe to deal with it (a kludge, of course):

Speeding up Ansible

Ansible playbook execution may take quite a while when connection is not configured properly. Here’s a checklist to ensure your Ansible is as fast as possible:

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Curating cron emails

As you might know, cron captures all the output of executed tasks and mails them to the user under which the tasks are executed. The problem is that often this mail just piles up somewhere in /var/mail directory, without being ever reviewed. It’s not a good practice, akin to sweeping the trash under the carpet.

Zimbra split horizon DNS on EC2 with Unbound

Email server behind NAT is a pain, but it can be further aggravated if your email server has a dynamic IP address. Which is the case with EC2. Granted, it will only change on stop/start of the instance, but still. Here’s a recipe to deal with it (a kludge, of course):

Centos 7 Exim DKIM

Centos 7 has Exim 4.84 in repos, which has DKIM support built-in. So no need for OpenDKIM anymore. See how is it configured:

Jenkins Job Builder Github action

When codifying Jenkins jobs, you have two options: Job DSL + seed job. More native to Jenkins, but requires Groovy scripting. Jenkins Job Builder. A third party solution, but configs are in yaml, so it’s easier to get started.

Using Jenkins as an automation dashboard - Part 2

Continuing on using Jenkins as a dashboard, I’d like to highlight some things that are essential to ensure reliable job execution:

Using Jenkins as an automation dashboard - Part 1

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Change resolution from command line in Ubuntu 18.04’s Wayland

Wayland doesn’t allow applications to change resolution, and there’s no official utility to do that. There’s a third party display-config script, but it stopped working with latest changes in Mutter API. Here’s a short workaround until a better solution comes up:

Typing diacritics Mac-style in Ubuntu 17.10

One can say many bad things about Mac OS, but what they got right for sure is typing diacritics, such as ñ or é. You don’t have to add layouts or switch languages, just use alt+n to get dead tilde and alt-e for dead acute accent.

Github Torrent Action

Here’s something I’ve been meaning to get to for a while, and finally got a chance. Enter GitHub Torrent Action!

Jenkins Job Builder Github action

When codifying Jenkins jobs, you have two options: Job DSL + seed job. More native to Jenkins, but requires Groovy scripting. Jenkins Job Builder. A third party solution, but configs are in yaml, so it’s easier to get started.

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

Install Karpenter with ArgoCD

Today we are going to install Karpenter with ArgoCD.

How to get realip to work with ingress-nginx and ELB

Environment: AWS EKS, Ingress-Nginx controller installed, and an Ingress resource is configured, passing requests to a backend http service.

Terraform, Lambda, source_code_hash

Oh, no! Terraform deploys Lambda again!

Install Karpenter with ArgoCD

Today we are going to install Karpenter with ArgoCD.

Traefik ingress: redirect HTTP to HTTPS

Let’s say we need to set up HTTP to HTTPS redirection in Traefik ingress.

How to get realip to work with ingress-nginx and ELB

Environment: AWS EKS, Ingress-Nginx controller installed, and an Ingress resource is configured, passing requests to a backend http service.

Zimbra split horizon DNS on EC2 with Unbound

Email server behind NAT is a pain, but it can be further aggravated if your email server has a dynamic IP address. Which is the case with EC2. Granted, it will only change on stop/start of the instance, but still. Here’s a recipe to deal with it (a kludge, of course):

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Zimbra split horizon DNS on EC2 with Unbound

Email server behind NAT is a pain, but it can be further aggravated if your email server has a dynamic IP address. Which is the case with EC2. Granted, it will only change on stop/start of the instance, but still. Here’s a recipe to deal with it (a kludge, of course):

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Curating cron emails

As you might know, cron captures all the output of executed tasks and mails them to the user under which the tasks are executed. The problem is that often this mail just piles up somewhere in /var/mail directory, without being ever reviewed. It’s not a good practice, akin to sweeping the trash under the carpet.

Centos 7 Exim DKIM

Centos 7 has Exim 4.84 in repos, which has DKIM support built-in. So no need for OpenDKIM anymore. See how is it configured:

Ansible filter list based on attributes

Suppose we want to find only users who have a middle name from this: users: - name: John surname: Johnson - name: Alice surname: Wonderland - name: Bob surname: Rabbit middlename: Bebop Old, verbose way would be: - debug: msg="" loop: "" when: item.middlename is defined This results in “s...

Speeding up Ansible

Ansible playbook execution may take quite a while when connection is not configured properly. Here’s a checklist to ensure your Ansible is as fast as possible:

Zimbra split horizon DNS on EC2 with Unbound

Email server behind NAT is a pain, but it can be further aggravated if your email server has a dynamic IP address. Which is the case with EC2. Granted, it will only change on stop/start of the instance, but still. Here’s a recipe to deal with it (a kludge, of course):

Speeding up Ansible

Ansible playbook execution may take quite a while when connection is not configured properly. Here’s a checklist to ensure your Ansible is as fast as possible:

Using Jenkins as an automation dashboard - Part 2

Continuing on using Jenkins as a dashboard, I’d like to highlight some things that are essential to ensure reliable job execution:

Using Jenkins as an automation dashboard - Part 1

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

Navbar menu for a large static website

Say you need to make a navigation menu bar for a large static (HTML) website. Not the Jekyll/Hugo kind - those are easy to manage. I’m talking about something from the past, a legacy monster.

Intel GPU hang

The dreaded GPU hang error:

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

MaxScale in 2015

There’s still a shortage of proper Mysql proxy software. At the moment, there are 2 the most prominent: Mysqlproxy by Oracle and MaxScale by MariaDB. Seeing that there are no RPMs for Mysqlproxy, I decided to try out MaxScale first. Let’s see how it performed.

MaxScale in 2015

There’s still a shortage of proper Mysql proxy software. At the moment, there are 2 the most prominent: Mysqlproxy by Oracle and MaxScale by MariaDB. Seeing that there are no RPMs for Mysqlproxy, I decided to try out MaxScale first. Let’s see how it performed.

MaxScale in 2015

There’s still a shortage of proper Mysql proxy software. At the moment, there are 2 the most prominent: Mysqlproxy by Oracle and MaxScale by MariaDB. Seeing that there are no RPMs for Mysqlproxy, I decided to try out MaxScale first. Let’s see how it performed.

MaxScale in 2015

There’s still a shortage of proper Mysql proxy software. At the moment, there are 2 the most prominent: Mysqlproxy by Oracle and MaxScale by MariaDB. Seeing that there are no RPMs for Mysqlproxy, I decided to try out MaxScale first. Let’s see how it performed.

MaxScale in 2015

There’s still a shortage of proper Mysql proxy software. At the moment, there are 2 the most prominent: Mysqlproxy by Oracle and MaxScale by MariaDB. Seeing that there are no RPMs for Mysqlproxy, I decided to try out MaxScale first. Let’s see how it performed.

MaxScale in 2015

There’s still a shortage of proper Mysql proxy software. At the moment, there are 2 the most prominent: Mysqlproxy by Oracle and MaxScale by MariaDB. Seeing that there are no RPMs for Mysqlproxy, I decided to try out MaxScale first. Let’s see how it performed.

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Using multiple ELBs with Cloudflare DNS

If you have an autoscaling app on EC2, you need an ELB to distribute traffic. And if you don’t trust in ELB to be HA, you need at least 2 of them. The issue is that ELBs don’t have statis IPs, they can only be referenced with CNAME. That limits your DNS hosting option to just Route53, because apex record can’t be CN...

Centos 7 Exim DKIM

Centos 7 has Exim 4.84 in repos, which has DKIM support built-in. So no need for OpenDKIM anymore. See how is it configured:

Centos 7 Exim DKIM

Centos 7 has Exim 4.84 in repos, which has DKIM support built-in. So no need for OpenDKIM anymore. See how is it configured:

Centos 7 Exim DKIM

Centos 7 has Exim 4.84 in repos, which has DKIM support built-in. So no need for OpenDKIM anymore. See how is it configured:

Speeding up Ansible

Ansible playbook execution may take quite a while when connection is not configured properly. Here’s a checklist to ensure your Ansible is as fast as possible:

Speeding up Ansible

Ansible playbook execution may take quite a while when connection is not configured properly. Here’s a checklist to ensure your Ansible is as fast as possible:

Zimbra split horizon DNS on EC2 with Unbound

Email server behind NAT is a pain, but it can be further aggravated if your email server has a dynamic IP address. Which is the case with EC2. Granted, it will only change on stop/start of the instance, but still. Here’s a recipe to deal with it (a kludge, of course):

Using Jenkins as an automation dashboard - Part 1

Forgotten KeePassX password

Stages of having forgotten KeePassX master password:

Forgotten KeePassX password

Stages of having forgotten KeePassX master password:

Forgotten KeePassX password

Stages of having forgotten KeePassX master password:

Forgotten KeePassX password

Stages of having forgotten KeePassX master password:

Typing diacritics Mac-style in Ubuntu 17.10

One can say many bad things about Mac OS, but what they got right for sure is typing diacritics, such as ñ or é. You don’t have to add layouts or switch languages, just use alt+n to get dead tilde and alt-e for dead acute accent.

Regex to match C++ style preprocessor macro defines

This took a few days of trying…

Python threading keyboard interrupt

Proper async thread termination:

Navbar menu for a large static website

Say you need to make a navigation menu bar for a large static (HTML) website. Not the Jekyll/Hugo kind - those are easy to manage. I’m talking about something from the past, a legacy monster.

Navbar menu for a large static website

Say you need to make a navigation menu bar for a large static (HTML) website. Not the Jekyll/Hugo kind - those are easy to manage. I’m talking about something from the past, a legacy monster.

Navbar menu for a large static website

Say you need to make a navigation menu bar for a large static (HTML) website. Not the Jekyll/Hugo kind - those are easy to manage. I’m talking about something from the past, a legacy monster.

VScode extension highighting tips

Reusing parts of another grammar

VScode extension highighting tips

Reusing parts of another grammar

VScode extension highighting tips

Reusing parts of another grammar

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

Static website hosting in 2019

TL;DR: use Gitlab+Netlify. With the push for back to static, I found myself looking for static hosting again. And with some specific requirements: DNS on Cloudflare SSL support for 4th level subdomains (sub.sub.domain.com). Which means SSL termination can’t happen on Cloudflare - their free plan only allows to ...

GPL v3, not later

So you wrote a piece of software. And you want to open its source. And being a good lad, caring about software freedom, you choose (probably the most well-known) open source license, GPL.

GPL v3, not later

So you wrote a piece of software. And you want to open its source. And being a good lad, caring about software freedom, you choose (probably the most well-known) open source license, GPL.

GPL v3, not later

So you wrote a piece of software. And you want to open its source. And being a good lad, caring about software freedom, you choose (probably the most well-known) open source license, GPL.

Jekyll: check if file exists

So I needed to display a file if it exists. A quick search yielded two options:

Travis, Wine, Innosetup: Error creating window.

Given:

Travis, Wine, Innosetup: Error creating window.

Given:

Travis, Wine, Innosetup: Error creating window.

Given:

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Ryzen: adventures in RedmiLand

Greetings, fellow netizen. Today we’re going to install Ubuntu on Redmibook 16 Ryzen edition (Ryzen 4700U).

Intel GPU hang

The dreaded GPU hang error:

Intel GPU hang

The dreaded GPU hang error:

Terraform, Lambda, source_code_hash

Oh, no! Terraform deploys Lambda again!

Terraform, Lambda, source_code_hash

Oh, no! Terraform deploys Lambda again!

How to get realip to work with ingress-nginx and ELB

Environment: AWS EKS, Ingress-Nginx controller installed, and an Ingress resource is configured, passing requests to a backend http service.

How to get realip to work with ingress-nginx and ELB

Environment: AWS EKS, Ingress-Nginx controller installed, and an Ingress resource is configured, passing requests to a backend http service.

How to get realip to work with ingress-nginx and ELB

Environment: AWS EKS, Ingress-Nginx controller installed, and an Ingress resource is configured, passing requests to a backend http service.

Traefik ingress: redirect HTTP to HTTPS

Let’s say we need to set up HTTP to HTTPS redirection in Traefik ingress.

Traefik ingress: redirect HTTP to HTTPS

Let’s say we need to set up HTTP to HTTPS redirection in Traefik ingress.

Traefik ingress: redirect HTTP to HTTPS

Let’s say we need to set up HTTP to HTTPS redirection in Traefik ingress.

Install Karpenter with ArgoCD

Today we are going to install Karpenter with ArgoCD.

Install Karpenter with ArgoCD

Today we are going to install Karpenter with ArgoCD.

Install Karpenter with ArgoCD

Today we are going to install Karpenter with ArgoCD.

Github Torrent Action

Here’s something I’ve been meaning to get to for a while, and finally got a chance. Enter GitHub Torrent Action!

Github Torrent Action

Here’s something I’ve been meaning to get to for a while, and finally got a chance. Enter GitHub Torrent Action!

Github Torrent Action

Here’s something I’ve been meaning to get to for a while, and finally got a chance. Enter GitHub Torrent Action!