Vitaliy D. vi7

Prometheus Node Exporter installer script for AsusWRT Merlin

Installation

curl -sL https://gist.githubusercontent.com/vi7/bc27529bd4803576fefc479dbd326dfa/raw/node_exporter_installer_asuswrt_merlin.sh | sh \
&& rm -f node_exporter_installer_asuswrt_merlin.sh

CoreDNS installer script for AsusWRT Merlin

Installation

curl -sL https://gist.githubusercontent.com/vi7/e41b07ff7d0fb845ac281cd940876e2a/raw/coredns_installer_asuswrt_merlin.sh | sh && rm -f coredns_installer_asuswrt_merlin.sh

DevOps topics

Linux command line basics:
- navigating through directory tree
- opening text files (logs)
- checking CPU/Memory/Disk usage
- checking network ports
- services (stopping, starting, checking status)
Docker and containers overview (what is it and what it is used for)

Working with AD from Linux

Prerequisites

In order to access AD data from Linux one should install ldapsearch utility which is a part of openldap-clients package on CentOS:

yum -y install openldap-clients

Resizing existing partition on Linux

This guide was tested on CentOS 7 but should be in general applicable for other Linux distros with parted and LVM

WARN You can’t resize partitions on the running OS in CentOS 6 (unless you’re brave enough to mess with the sfdisk) So the fastest option is to add new disk partition, create LVM PV from it and extend needed LVM VG accordingly Bad luck for you if you’re not using LVM ☠️

Add required amount of space to the virtual machine disk

LibreELEC for AUN akey1 plus

LibreELEC 8

Flashing procedure

Steps below are needed only once. USB will be configured as a primary boot device

	#!/usr/bin/env bash

	# Based on the info from
	# - http://elrepo.org/tiki/HomePage
	# - https://www.golinuxcloud.com/set-default-boot-kernel-version-old-previous-rhel-linux/
	# - https://www.casesup.com/category/knowledgebase/howtos/how-to-change-the-default-kernel-in-grub-for--rhel-and-centos

	## !!!!!!!!!!!!!!!!!!!! ##
	## ##
	## !!! IMPORTANT: do not run this as-is, read all in-line comments ##

	---
	global:
	resolve_timeout: 3m
	slack_api_url: 'https://hooks.slack.com/services/<TOKEN>'
	smtp_smarthost: 'mail.example.com:25'
	smtp_from: '[email protected]'
	smtp_require_tls: false
	smtp_hello: 'alertmanager-dev'

	# The directory from which notification templates are read.

	function run(input, parameters) {

	const appName = "";
	const verbose = true;

	const scriptName = "close_notifications_applescript";

	const CLEAR_ALL_ACTION = "Clear All";
	const CLEAR_ALL_ACTION_TOP = "Clear";
	const CLOSE_ACTION = "Close";

	#!/usr/bin/env bash

	# Collection of oneliner scripts to check Git working tree status for multiple repositories in a batch

	set -e

	# The most simple, prints all the git repos found and outputs not commited changes if any
	for dir in $(find . -type d -name '.git'); do pushd $dir/.. >/dev/null; pwd; git status --short; popd >/dev/null; done

	# Print paths to repositories with uncommitted changes only