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Category: others

Generate secure password

You heard about using upper case, lower case, numbers, and special characters in your password. You also heard about the ever-changing minimum password length. Researches now say you should use passphrases over random characters.

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AWS Zonal Shift

Zonal Shift is a free service from AWS, which allows users to disable an Availability Zone (AZ) for resources. In this post, we will walk through what it does and observe the results.

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git rebase branch with head on master

In this post, let’s see how to rebase a branch with head on master.

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Terraform and time_sleep

Sometimes it takes a while to provision resource A, and resource B can only be deployed after. Here I’ll demonstrate how to use time_sleep to set up the wait and dependency.

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OpenTofu 1.7.0 state encryption

Introduced in OpenTofu 1.7.0 is the ability to encrypt the state file. Here is how to use it.

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Terraform and segregated permissions

Recently, there is an initiative to tighten up security control on terraform deployment. In this post, I will demo how to use provider alias and tell terraform to switch role for resource management

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Edit gpg encrypted file with vim

Working with encrypted files can be troublesome at times. Thanks to James McCoy, there is a plugin for vim that makes the task so much easier.

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Lelit Elizabeth PL92T Pressure Tuning

In this page, I will show you how to adjust the brewing pressure of Lelit PL92t.

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jq transformation

I was working on a terraform module that creates cloudwatch alarms. AWS uniquely identifies metric with dimensions. All dimensions must be supplied to select the metric. In this case, the dimension comes from CWAgent and terraform external data source is used to obtain the dimension. A bit of jq work is needed to transform the…

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Enable zswap on memory-limited systems

On systems where memory is limited – be that a SOC compute or a low-end virtual machine, enable zswap gives you more usable memory. This is similar to Stacker which compress your data and let you have more space. Back in those days, hard drives were measures in MB!

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