Kyle Pericak

Created: 2019-09-17, Modified: 2019-09-17

Build a persistent reverse SSH tunnel from an Ubuntu box at a customer site to your own pivot VPS, so you can remote in without a VPN.

Created: 2019-09-11, Modified: 2020-08-13

A running reference of error messages I've hit and the fixes that worked. Includes Docker D-Bus login, Ceph OSD memory, Chrome cert errors, and AWS ECR NTP.

Created: 2019-09-11, Modified: 2020-11-09

Grab-bag of Linux ops recipes. tcpdump, vim find and replace, passwordless sudo, loopback volumes, journalctl, bash exit traps, MTU tests, and more.

Created: 2019-09-10, Modified: 2019-09-10

Step-by-step for launching a Docker container on AWS ECS Fargate from the web console, including task definitions, load balancer setup, and ECR image URLs.

Created: 2019-09-06, Modified: 2019-09-06

Docker's 64MB /dev/shm default is tiny. Raise it per-container with --shm-size, set a daemon-wide default in daemon.json, or remount /dev/shm on the host.

Created: 2019-09-06, Modified: 2019-12-04

Practical Git recipes for renaming branches, rolling back a merge, switching the commit editor to Vim, and scrubbing a file out of history with filter-branch.

Created: 2019-09-06, Modified: 2019-10-2

Publish a pip-installable Python package to PyPI. Walks through setup.py, setup.cfg, a GitHub release for download_url, and uploading with twine.

Created: 2019-09-05, Modified: 2019-09-05

Pull a JSON blob out of a MariaDB column into a file, edit it, and write it back using raw SQL in Python with the mysql-connector library.

Created: 2019-09-04, Modified: 2019-09-26

Python snippets I reach for often. Pylint disable comments, list comprehensions, Jinja2 templating, MySQL queries, stdin pipes, and file string replacement.

Created: 2019-09-02, Modified: 2019-09-02

Run a private FTB Ultimate Reloaded modded Minecraft server on an Ubuntu 16.04 VM with 12GB RAM, and connect using MultiMC or the Feed The Beast launcher.

Created: 2019-08-26, Modified: 2019-09-19

Set up an AWS Elastic Container Registry repo, create least-privilege IAM groups for push and pull access, and connect Docker using the AWS CLI.

Created: 2019-08-26, Modified: 2019-08-26

Add the Pure Storage Cinder plugin to a Kolla OpenStack image with a Jinja2 template override, keeping the upstream Kolla source untouched.

Created: 2019-08-20, Modified: 2019-08-20

Configure a Sender Policy Framework DNS record so mail servers trust emails from your domain. Covers finding your external IP and setting the TXT record.

Created: 2019-08-20, Modified: 2019-08-20

Turn an Ubuntu Server into a WiFi-to-wired NAT gateway using netplan, IP forwarding, and iptables MASQUERADE so switched servers can reach the internet.

Created: 2019-08-19, Modified: 2020-03-09

Connect Ubuntu Server 18.04 to a WPA2 WiFi network from the command line using wpa_supplicant, iwlist, and netplan, including offline package install steps.