jfeilbach

TCP tuning

The most important TCP tuning areas since kernel 4.9 are:

• packet pacing
• dynamic TSO sizing
• TCP small queues
• BBR TCP congestion algorithm

Definitions

• Gb = gigabit

jfcherng

This gist will no longer be updated as the changelog will be on the official website.

• Sublime Text/Merge Official Discord chat server: https://discord.gg/D43Pecu
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Converted via https://domchristie.github.io/turndown

About Sublime Text 4

darwin

Today I wanted to move existing APFS-resident macOS Catalina installation to a new disk. I upgraded my late 2014 Mac Mini with a shiny new 1TB SSD. This took way too many hours of my life I will never get back. Hope this saves some time to you.

Good news:

1. it is possible to create a DMG image from existing APFS container with macOS Catalina installation including metadata needed for complete restore (the DMG contains OS, OS Data, Preboot, Recovery and VM volumes)
2. it is possible to restore this DMG image into empty APFS container and get a bootable copy of the original system

This information is relevant for Catalina (I'm currently running macOS 10.15.1).

michaelstanton

WARNING MAY BE INCORRECT AND INCOMPLETE, USE AT YOUR OWN RISK

Install Proxmox, RancherOS, in a VM with Rancher 2.0 and Portainer

Setup Proxmox

1. Install Proxmox 5.3
2. Console/SSH into Proxmox
3. nano /etc/apt/sources.list
4. edit the file to look like this

disulfidebond

Overview

This gist details how to create or restore a disk image in Mac OSX. There are three methods that are described: Carbon Copy Cloner, Disk Utility, and CommandLine.

• Disclaimer:
  • I have no financial incentives to https://bombich.com or Apple.
  • Always make a backup of your data, and make 2 separate backups before trying something new.
  • The following steps have been tested and are a summary of my personal recommendations, but should be used at your own risk.
  • If there is a chance of imminent data loss, contact a professional for assistance, and do not rely on a random person from the Internet for help.

Method 1: Carbon Copy Cloner (CCC)

Log1x

Debloating Nox

Nox, despite being the most feature-filled Android emulator, has a lot of negativity surrounding it due to their antics when it comes to making income off of their program. It is known for running repeated advertisments in the background, calling home and passing along system information (outside of your Android instance) as well as a vast amount of potentially sensitive data in an encrypted payload back to their multitude of servers. With the following preventitive measures, we can stop a majority of this happening as well as greatly improve the overall performance.

1. Download and Install a fresh copy of Nox. The latest version is fine (for now). If you already have it installed, that is fine too. No need to reinstall.

2. Enable Root Mode on Nox by clicking the gear icon and then checking the Root Startup box.

3. Install a new Launcher from the Play Store. ANYTHING but Nox's default. I suggest [Nova Launcher](https://play.google.com/s

nicosingh

TL;DR

Clone this repo:

git clone https://gist.github.com/08be6d6e7605a43fe52d1f201c2b47d8.git
cd 08be6d6e7605a43fe52d1f201c2b47d8

Start the docker stack:

superseb

Generate Rancher 2 cluster/node agents definitions

This is not official documentation/tooling, use with caution

This generate the Kubernetes definitions of the cattle-cluster-agent Deployment and cattle-node-agent DaemonSet, in case it's accidentally removed/server-url was changed/certficates were changed. It is supposed to run on every cluster Rancher manages. If you have custom clusters created in Rancher, see Kubeconfig for Custom clusters created in Rancher how to obtain the kubeconfig to directly talk to the Kubernetes API (as usually it doesn't work via Rancher anymore). For other clusters, use the tools provided by the provider to get the kubeconfig.

IMPORTANT: You get the cluster/node agents definitions from Rancher, and you apply them to the cluster that is created/managed so you need to switch kubeconfig to point to that cluster before applying them.

Running it

junderw

FROM ubuntu:16.04
MAINTAINER Jonathan Underwood

# set env vars for linux user and keybase user
ENV LINUX_USER="kbuser" \
    KEYBASE_USER="youruser"

# use curl to grab the latest build from keybase.io
RUN apt update && apt install -y \
   curl

rfikki

admin.addPeer("enode://8c5131f577ee602ccaad5e5f600011c024d43d33e6af6f8a89ed26cbfadd7efe903a8e426dde4071b857e0838a2efa29ae3b268f8b55acd59e72d4a919673cbc@13.251.47.174:30303");
admin.addPeer("enode://798b8eba7b65cdd71bb061a6b18a1f7d16612d54e1aa542d8dc5c3573322b5dd7496c1eea100dbb84f8495d89f3d5ddb4142b0006a73cd32daa2f643bd5d1c76@175.24.29.183:30311");
admin.addPeer("enode://9a4be35fec78cf91e7e959029ae3f5d3d3e86446186eb14f181c8f3b9917f57839ef98d4ba53cf06eb4fea696ecc14796b34d96db4f4294864edfcab27dd9956@31.220.51.107:30303");
admin.addPeer("enode://2763ab6d19d6e7ce7a953ba95c9a87fe6ae5eac3434bf216282f53142d89cb5451faa701311d7de1d79cc8ecbd57f1781156e26f5722aee835547aeab870e385@52.237.88.221:30303");
admin.addPeer("enode://81488a6c0b62aa14a1172d607893b6317e4f2565ca2bd73c7c0b8bfd55842af6b7972218728d1f352b3fddc61d0dccbf92e81d2bbfdc375db44ae44ee332d4db@88.198.59.75:30303");
admin.addPeer("enode://3d55f613d74e90f5b8a4154d20d8a7260a973751c1402bf52adde2b08b72a9e0327a522bf187765f2d6e2a3b893dfe7aa41b204bce5f793bd9470f24fa3aafc