Khairul Azwan khairulcs

apt-get update sudo apt-get install certbot apt-get install python3-certbot-nginx

server {
    listen 80 default_server;
    listen [::]:80 default_server;
 root /var/www/html;

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
curl -LO "https://dl.k8s.io/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256"
echo "$(<kubectl.sha256) kubectl" | sha256sum --check

Should echo kubectl: OK

sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
kubectl version --client

STEPS

vim /etc/init.d/sidekiq

Copy and paste the code below and change appropriately Save and exit (ESC + :wq)

sudo update-rc.d sidekiq defaults

1. Clear retry set

Sidekiq::RetrySet.new.clear

1.1 Retry all

Sidekiq::RetrySet.new.retry_all

2. Clear scheduled jobs

Sidekiq::ScheduledSet.new.clear

3. Clear 'Processed' and 'Failed' jobs

Sidekiq::Stats.new.reset

4. Clear 'Dead' jobs statistics

Sidekiq::DeadSet.new.clear

ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head

Brief explanation of above options used in above command.

The -o (or –format) option of ps allows you to specify the output format. A favorite of mine is to show the processes’ PIDs (pid), PPIDs (pid), the name of the executable file associated with the process (cmd), and the RAM and CPU utilization (%mem and %cpu, respectively).

Additionally, I use --sort to sort by either %mem or %cpu. By default, the output will be sorted in ascendant form, but personally I prefer to reverse that order by adding a minus sign in front of the sort criteria.

To add other fields to the output, or change the sort criteria, refer to the OUTPUT FORMAT CONTROL section in the man page of ps command.

Install the package

apt install dstat -y

use nohup to run the dstat

nohup dstat -c --top-cpu -d --top-bio --top-latency --output systemstats.csv &

end the nohup

ps -ef |grep nohup

if the process ID == 22182

kill -9 22182

	HTTP status code symbols for Rails

	Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

	Status Code Symbol
	1xx Informational
	100 :continue
	101 :switching_protocols
	102 :processing

	#!/bin/bash

	# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
	# Inspired from https://gist.github.com/faleev/3435377

	# Remove any existing packages:
	sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev

	# Get the dependencies (Ubuntu Server or headless users):
	sudo apt-get update

	<!doctype html>
	<title>Site Maintenance</title>
	<style>
	body { text-align: center; padding: 150px; }
	h1 { font-size: 50px; }
	body { font: 20px Helvetica, sans-serif; color: #333; }
	article { display: block; text-align: left; width: 650px; margin: 0 auto; }
	a { color: #dc8100; text-decoration: none; }
	a:hover { color: #333; text-decoration: none; }
	</style>