DeveloperMos

Set up PMM Server v2

Let's start by creating entry for server in docker-compose.yaml:

version: '2'
# version 2 of docker-compose is not "old" version, it's the actual version,
# see below for explanation:
# https://stackoverflow.com/a/53636006/961092
services:

DeveloperMos

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

DeveloperMos

Creating bootable Linux USB using Mac

CentOS, Ubuntu, Slackware, etc. Whatever Linux-based OS it is, you can create a bootable USB for it by using a Mac.

1. Prepare the .iso file

Download it, copy it, whatever it takes to prepare that Linux-based OS .iso file

2. Convert the .iso file into a .img.dmg

DeveloperMos

groups:
- name: Prometheus self-monitoring
  rules:

  # A Prometheus job has disappeared
  - alert: PrometheusJobMissing
    expr: absent(up{job="my-job"})
    for: 5m
    labels:
      severity: warning

DeveloperMos

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

DeveloperMos

#!/bin/bash

# create mongodb_exporter.service
cat > /etc/systemd/system/mongodb_exporter.service <<END
[Unit]
Description=Prometheus MongoDB Exporter
Documentation=https://github.com/percona/mongodb_exporter
After=network.target

[Service]

DeveloperMos

Every so often I have to restore my gpg keys and I'm never sure how best to do it. So, I've spent some time playing around with the various ways to export/import (backup/restore) keys.

Method 1

Backup the public and secret keyrings and trust database

cp ~/.gnupg/pubring.gpg /path/to/backups/
cp ~/.gnupg/secring.gpg /path/to/backups/
cp ~/.gnupg/trustdb.gpg /path/to/backups/

or, instead of backing up trustdb...

DeveloperMos

atl*CLI> core show help
!                              -- Execute a shell command
acl show                       -- Show a named ACL or list all named ACLs
ael reload                     -- Reload AEL configuration
ael set debug {read|tokens|macros|contexts|off} -- Enable AEL debugging flags
agi dump html                  -- Dumps a list of AGI commands in HTML format
agi exec                       -- Add AGI command to a channel in Async AGI
agi set debug [on|off]         -- Enable/Disable AGI debugging
agi show commands [topic]      -- List AGI commands or specific help
aoc set debug                  -- enable cli debugging of AOC messages

DeveloperMos

<form action="search">

  <fieldset>
    <legend>Search string</legend>
    <input type="search" name="query" value="" placeholder="Enter text">
  </fieldset>

  <fieldset>
    <legend>Search for</legend>
    <input type="radio" name="type" value="name" checked="checked">

DeveloperMos

const https = require('https');

exports.postToSlack = () => {
  
  // Read more about Slack webhooks here: https://api.slack.com/messaging/webhooks 
  const webhookPath = '/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX'
 
  const payload = {
    'channel': '#mychannel',
    'username': 'slackbot',