iambryancs

Install root CA in PEM format

To install a root CA, do

$ sudo apt-get install -y ca-certificates
$ sudo cp local-ca.crt /usr/local/share/ca-certificates
$ sudo update-ca-certificates

The CA trust store location

• /etc/ssl/certs/ca-certificates.crt - single file (PEM bundle)

iambryancs

Get ArgoCD default admin password

To get ArgoCD default admin password after installation, run:

kubectl -n argocd get secret argocd-initial-admin-secret \
          -o jsonpath="{.data.password}" | base64 -d; echo

The default admin user is admin.

iambryancs

To check the health of a plugin, run:

:checkhealth <plugin_name>

Example, to check telescope plugin's health and see any missing deps:

:checkhealth telscope

iambryancs

To clear stucked unread Slack notifications, simply type:

Shift + Escape

iambryancs

Sharing Docker build ARG in multi-stage builds

To share Docker build ARGs in a multi-stage build, simply declare it globally then mention it in subsequent builds to renew.

ARG IMG=alpine:3.14.2
FROM gcr.io/kaniko-project/executor:v1.9.0-debug AS kaniko

ARG IMG
FROM ${IMG}
RUN apk --update add \

iambryancs

#!/bin/bash

SRC_DB_URI='mongodb+srv://username:password@src_host/'
SRC_DB_NAME=src_db_name

DEST_DB_URI='mongodb+srv://username:password@dest_host/'
#not probably needed as well as the `--db` under `mongorestore`
DEST_DB_NAME=dest_db_name

mongodump \

iambryancs

SPA routing with Nginx

To allow Nginx to route non-existing path back to index.html, do:

server {
      listen 80;
      listen [::]:80;
      server_name localhost;

 location / {

iambryancs

Move /var to another partition in Ubuntu

Create partition with fdisk or gparted

fdisk /dev/sdb
...
...

Create fs

iambryancs

#!/bin/bash

# Source: https://serverfault.com/a/887402/169782

# Usage:
# krsync -av --progress --stats src-dir/ pod<@namespace>:/dest-dir

if [ -z "$KRSYNC_STARTED" ]; then
    export KRSYNC_STARTED=true
    exec rsync --blocking-io --rsh "$0" $@

iambryancs

Using Pyenv in WSL Ubuntu 22.04 LTS to install Python 3.8

Env

• Windows 10
• Ubuntu 22.04 WSL
• zsh

Requirements

• git