Author: jlim0930

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Fast portable wiki that syncs to your private github repo

Posted on by jlim0930

I been needing alot of things lately. I was using evernote to keep my notes and ever since they changed their free offering, I’ve had my notes scattered all over notepad++, atom, code, etc and needed a quick and fast place to stop and keep up with my notes. I needed something portable and that will not get deleted, so I came up with my wiki.sh script! Features tested on macOS, linux, wsl creates wiki directory in your ${HOME} cleanup clearns off everything runs in both http and https ports are configurable do not need root, just need to be… Continue Reading →

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quick, fast & dirty minio server using docker

Posted on by jlim0930

I need a quick & fast method of standing up a not so fancy minio server to test some s3 functionality. Nothing fancy was needed nor the need for multiple nodes or large datastores, but I did need it something that is easily installed/cleanedup and repeated. minio.sh was born! Features tested on macOS, linux, wsl creates myminio directory in your ${HOME} cleanup cleans off everything do not need root just need to be part of the docker group Requirements docker is needed. any kind of s3 client like mc, s3cmd is good to have Installation $ curl -fsSL https://raw.githubusercontent.com/jlim0930/scripts/master/minio.sh -o… Continue Reading →

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Quickly deploy elasticsearch with docker

Posted on by jlim0930

UPDATE: there is a new version that was released in March 2022 and you can read about it here I needed a way to quickly stand up various versions of elasticsearch for testing. Sometimes just 1 instance was needed and at other time a small cluster and configure it with TLS and security settings. I spent way too much time installing and reinstalling the software on my vm and knew that this will not work well for me. So I set out to look for a light weight, portable, fast, re-produce-able solution that I can quickly stand up and delete… Continue Reading →

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kafka – stand up a test instance with SSL for testing

Posted on by jlim0930

I had a need to stand up a Kafka instance with SSL to test SSL handshakes. Today was the first time looking at Kafka so needless to say I was a bit lost. 🙁 Started out looking up various projects and found some interesting things that enabled me to setup a instance of kafka using docker containers with SSL. Requirements: git, docker, docker-compose installed on your server. Clone wurstmeister/kafka repo Get confluent’s kafka-generate-ssl.sh script, run it and follow all the instructions. Please make sure to remember the passphrase and the truststore/keystore passwords. This will generate the following Create “certs” directory… Continue Reading →

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wildcard certificates

Posted on by jlim0930

How to create wildcard certificate the right way to use for home so that you wouldn’t get the not trusted thingy for your site. Use my script on https://github.com/jlim0930/scripts/blob/master/wildcard.sh to generate the CA,CA key, & the certificate. Use the certificate to encrypt your devices and sites like synology,esxi,others and import the CA into your computer so that it will verify the cert! enjoy!

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Kubernetes 101 & 102

Posted on by jlim0930

Lets dive into kubernetes(will refer to it as k8s from here on out). What is k8s? according to wikipedia: Kubernetes (commonly stylized as k8s) is an open-source container-orchestration system for automating application deployment, scaling, and management. It was originally designed by Google and is now maintained by the Cloud Native Computing Foundation. It aims to provide a “platform for automating deployment, scaling, and operations of application containers across clusters of hosts”. It works with a range of container tools, including Docker. Many cloud services offer a Kubernetes-based platform or infrastructure as a service (PaaS or IaaS) on which Kubernetes can… Continue Reading →

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Homemade Electrolyte Ice Cubes to replace tablets

Posted on by jlim0930

I recently started cycling and with the North Texas summer heat decided that I need something more than just water to help me keep hydrated during the summer.  I started by taking nuun tablets and it’s very good but after taking the tablets for a while I noticed that the cost does add up and it does have many unnatural chemicals so I decided to research and come up with my own solution. I dislike coconut flavor, however, coconut water does provide a lot of electrolytes so one formula is based on coconut water and the other ginger.  Also, many… Continue Reading →

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grub2 tips and tricks – CentOS/RHEL based

Posted on by jlim0930

grub2 is vastly different from grub. Will post some tips and tricks.. list the current kernels on the OS # egrep ^menuentry /etc/grub2.cfg | cut -f 2 -d \’ Linux Server, with Linux 3.10.0-123.el7.x86_64 Linux Server, with Linux 3.10.0-123.4.4.el7.x86_64 Linux Server, with Linux 0-rescue-d3e0313c0f6d48a0bb72495d2x32r1 if your wanting to change the defautl kernel that the system boots into grub2-set-default # where the # is the line number starting with 0 if your just wanting to boot into a version of kernel just 1 time you can do grub2-reboot # where the # is the line number starting with 0 or if… Continue Reading →

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RHEL/Centos 7.x software raid LIVE! both LVM and standard partitions with grub2

Posted on by jlim0930

Before getting started please read my previous post for RHEL/CentOS 6.x systems here. grub2 is vastly different than grub and I did not find any good solution of doing this on a live machine so lets get started. The setup will be the same as the previous post. make sure that the 2nd disk is added and now clone the partitions. You can also create partitions manually if you like or if you want to change the sizes of the partitions. [root@cent7 ~]# cat /proc/partitions major minor #blocks name 8 0 8388608 sda 8 1 1048576 sda1 8 2 7339008… Continue Reading →

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RHEL/Centos 6.x software raid LIVE! both LVM and standard partitions with grub

Posted on by jlim0930

It seems that there are still many machines out in the world today that have a need for software raid to protect its data. Recently I’ve been working on some POS machines which can house 2 drives but does not have any type of raid option for protection. This post will walk through creating a software raid1 and also talk about even changing partition sizes and also deal with those systems that have LVM instead of standard partitions. (I am a big fan of LVM and use it as much as possible even on small drives.) This post is a… Continue Reading →