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PostgreSQL JSON Cheatsheet

Using JSON in Postgres by example.

Quick setup via Docker

1. Download and install: Docker Toolbox
2. Open Docker Quickstart Terminal
3. Start a new postgres container:
   docker run --name my-postgres -e POSTGRES_PASSWORD=mysecretpassword -d postgres

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{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "grafana",
          "uid": "-- Grafana --"
        },
        "enable": true,

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Encrypting hard drives without reinstalling Ubuntu
===================================================
Gijs van Tulder, 26.02.2019, last update 04.03.2019

This is a list of the steps I took to encrypt the partitions on my
Ubuntu 16.04 laptop with the LUKS encryption system. Encrypting the
partitions took some time but was relatively easy. Getting the system
to boot afterwards was a little trickier, but doable.

Obviously, these steps might not work for you. Follow them at your

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Download CMake from: https://cmake.org/download/

wget https://github.com/Kitware/CMake/releases/download/v3.25.1/cmake-3.25.1.tar.gz

Compile from source and install

tar zxvf cmake-3.*

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Build git from source code

1) Go to https://git-scm.com/ and check out the latest version of Git

Currently, the latest version is 2.18.0. Download and extract it and go to the folder of the source code:

wget https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.20.5.tar.gz
tar xf git-2.20.5.tar.gz
cd git-2.20.5/

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Build git from source code

1) Go to https://git-scm.com/ and check out the latest version of Git

Currently, the latest version is 2.18.0. Download and extract it and go to the folder of the source code:

wget https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.18.0.tar.gz
tar xf git-2.18.0.tar.gz
cd git-2.18.0/

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all: lib run

lib:
    g++ -shared -fPIC -o libhello.so libhello.cpp hello.cpp
run:
    luajit main.lua
clean:
    rm *.so

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# ...

server {
        listen       80;
        server_name  localhost;
    
        location / {
            root   html;
            index  index.html index.htm;
        }

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HP Smart Storage Admin CLI (ssacli) installation and usage on Proxmox PVE (6.x)

Why use HP Smart Storage Admin CLI?

You can use ssacli (smart storage administrator command line interface) tool to manage any of supported HP Smart Array Controllers in your Proxmox host without need to reboot your server to access Smart Storage Administrator in BIOS. That means no host downtime when managing your storage.

CLI is not as convenient as GUI interface provided by BIOS or desktop utilities, but still allows you to fully manage your controller, physical disks and logical drives on the fly with no Proxmox host downtime.

ssacli replaces older hpssacli, but shares the same syntax and adds support for newer servers and controllers.

Installation

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#!/usr/bin/env python

import os
import re
import daemon
import asyncore
import smtpd

class SimpleRelayService(smtpd.PureProxy):
    """Handles processing mail for relay"""