Rob D bitsandbooks

Docker compose as a systemd unit

Create file /etc/systemd/system/[email protected]. SystemD calling binaries using an absolute path. In my case is prefixed by /usr/local/bin, you should use paths specific for your environment.

[Unit]
Description=%i service with docker compose
PartOf=docker.service
After=docker.service

I use PostgreSQL via the psql client. If you use a different client (eg. pgAdmin, etc.), I don't know how much will translate over.

One nice difference between psql and mysql (cli) is that if you press CTRL+C, it won't exit the client.

User administration

Login as superuser (via shell)

psql -U postgres

Open iTerm from finder

The code and instructions in this gist are from http://peterdowns.com/posts/open-iterm-finder-service.html. I've had to do this a few times and wanted to distill it the basics.

Open Automator
Create an Application
Choose Actions > Utilities > Run Applescript
Paste the contents of open_in_iterm.app into the window.
Save the script somewhere convenient
Find the script, then drag the script onto the Finder window while holding the command key (or in Yosemite, the command + option keys)

How to use kickstart in VirtualBox

This short howto describes how to install VMs via kickstart in VirtualBox. It's using PXE functionality built into the NAT network mode of the VirtualBox. The following instructions apply to CentOS installation but it should work for any RedHat-based distro.

Prepare directory structure

	# For recent versions of Ubuntu:
	- https://www.pugetsystems.com/labs/hpc/ubuntu-22-04-server-autoinstall-iso/

	# Docs:
	- https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls
	- https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls/ConfigReference
	- https://cloudinit.readthedocs.io/en/latest/topics/datasources/nocloud.html
	- https://discourse.ubuntu.com/t/please-test-autoinstalls-for-20-04/15250/53

	# Download ISO Installer:

	# lastb : Unsuccessful attempts
	# last : Successful attempts

	sudo lastb \| sed 's/ \+/ /g'\| cut -d' ' -f3 \| sort \| uniq -c \| sort -n
	sudo last \| sed 's/ \+/ /g'\| cut -d' ' -f3 \| sort \| uniq -c \| sort -n

	[Unit]
	Description=ZFS Event Daemon (zed)
	Documentation=man:zed(8)
	After=zfs-import-cache.service
	After=zfs-import-scan.service

	[Service]
	Type=forking
	ExecStart=/sbin/zed
	PIDFile=/run/zed.pid

	import os
	import time
	import subprocess
	import sys

	fileList = []
	rootdir = raw_input("Root Dir: ")
	for root, subFolders, files in os.walk(rootdir):
	for file in files:
	theFile = os.path.join(root,file)

	tell application "Safari"
	activate
	set theURL to the URL of the current tab of the front window
	close current tab of front window
	end tell

	tell application "Safari"
	activate
	set theWindow to false
	repeat with w in (every window whose visible is true)