Skip to content

Instantly share code, notes, and snippets.

View jacky96623's full-sized avatar

u2 jacky96623

2 followers · 5 following
  • Red Hat
  • Hong Kong
View GitHub Profile
@superseb
superseb / README.md
Last active September 11, 2025 15:15
Retrieve kubeconfig from RKE or Rancher 2 custom cluster controlplane node for RKE v0.2.x+ and Rancher v2.2.x+

Retrieve kubeconfig from RKE v0.2.x or Rancher v2.2.x custom cluster controlplane node

For RKE v0.1.x and Rancher v2.0.x/v2.1.x, see https://gist.github.com/superseb/3d8de6092ebc4b1581185197583f472a

This needs to be run on a node with the controlplane role, as it rewrites the server endpoint to https://127.0.0.1:6443, you can of course manually change this if necessary.

Applicable for:

  • RKE v0.2.x
  • Rancher v2.2.x
@mohanpedala
mohanpedala / bash_strict_mode.md
Last active March 18, 2026 15:56
set -e, -u, -o, -x pipefail explanation
@1951FDG
1951FDG / asuswrt-merlin.md
Last active November 3, 2025 19:44
Instructions for installing and configuring Squid caching proxy server on Asuswrt-Merlin

Setup Entware on Asuswrt-merlin

Entware is a modern alternative to Optware.

For those unfamiliar with Optware: it's a software repository that offers various software programs that can be installed on your router. They allow you to add new functionality to your router (provided you have the know-how to properly configure them).

Entware system library is specially modified (patched) so that standard linux files that are normally located in /etc directory are now located in /opt/etc/ directory. To simplify things let's consider /etc/passwd file. On Asuswrt-merlin it normally looks something like:

admin:x:0:0:admin:/root:/bin/sh

nas:x:100:100:nas:/dev/null:/dev/null

@fntlnz
fntlnz / self-signed-certificate-with-custom-ca.md
Last active March 14, 2026 06:53
Self Signed Certificate with Custom Root CA

Create Root CA (Done once)

Last update: Nov 2025.

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl ecparam -genkey -name secp384r1 | openssl ec -aes256 -out rootCA.key
@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@btbytes
btbytes / base36_encode_decode.sql
Created October 25, 2013 18:53
Base36 Conversion in PostgreSQL
-- source: http://www.jamiebegin.com/base36-conversion-in-postgresql/
CREATE OR REPLACE FUNCTION base36_encode(IN digits bigint, IN min_width int = 0)
RETURNS varchar AS $$
DECLARE
chars char[];
ret varchar;
val bigint;
BEGIN
chars := ARRAY['0','1','2','3','4','5','6','7','8','9'
,'A','B','C','D','E','F','G','H','I','J','K','L','M'