William Caban Babilonia williamcaban

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

To limit a CPU to a certain C-state, you can pass the processor.max_cstate=X option in the kernel line of /boot/grub/grub.conf.

Here we limit the system to only C-State 1:

    kernel /vmlinuz-2.6.18-371.1.2.el5 ... processor.max_cstate=1

On some systems, the kernel can override the BIOS setting, and the parameter intel_idle.max_cstate=0 may be required to ensure sleep states are not entered:

OpenShift Named Certificates

This is a short guide explaining how to deploy and manage custom SNI or "named" certificates via openshift-ansible. These custom certificates will be served for public facing console and API.

1. Setting up
2. Install using master.public-example.com certificate

My Openshift Cheatsheet

List all non openshift/kube namespaces

requires jq CLI

oc get namespaces -o json | jq '[.items[] | select((.metadata.name | startswith("openshift") | not) and (.metadata.name | startswith("kube-") | not) and .metadata.name != "default" and (true)) | .metadata.name ]'

Project Quotes, Limits and Templates

Link to these links: https://git.io/vKSVZ

Module 1:

Run jenkins from war file: jenkins -jar jenkins.war
Run jenkins from docker:

docker run -d \
           --restart unless-stopped \
           --name jenkins \

Install Letsencrypt Nginx Centos 7

install certbot

  sudo yum install epel-release
  sudo yum update
  sudo yum install certbot

install nginx

  sudo yum install nginx

sudo systemctl start nginx

GPU demos with OpenShift using Caffe2

Environment

The RHPDS catalog item you provisioned is a single-node OpenShift environment that is backed by an Amazon P-type EC2 instance which has 1 NVIDIA GPU. It is a 100% vanilla/standard OpenShift Container Platform 3.10 installation. Post-install, there were a few additional things done consuming Ansible content from the https://github.com/redhat-performance/openshift-psap

	worker_processes 1;
	user root;
	error_log logs/error.log;
	events {
	worker_connections 1024;
	}
	http {
	server {
	listen 8080;
	location / {

	heat_template_version: 2013-05-23

	description: Deploy Salt Cluster

	parameters:
	keyname:
	type: string
	description: Key name for loggin in to instances
	imagename:
	type: string

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>WebSocket Client</title>
	<style>
	#output {
	border: solid 1px #000;
	}
	</style>
	</head>