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#Open vSwitch Lab kaskdaksdkdaks

Get started with Open vSwitch, flows and OpenFlow controllers.

##Pre-reqs

Linux system with OVS installed.

##Setup

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if [ ! -f .env ]
then
  export $(cat .env | xargs)
fi

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Generate keys for system SSH deamon

System openssh

Generate all key types:

/etc/rc.d/sshd keygen

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frontend fe_ssh
   bind *:2222 ssl crt /etc/haproxy/certs/ssl.pem
   mode tcp
   log-format "%ci:%cp [%t] %ft %b/%s %Tw/%Tc/%Tt %B %ts %ac/%fc/%bc/%sc/%rc %sq/%bq dst:%[var(sess.dst)] "
   tcp-request content set-var(sess.dst) ssl_fc_sni
   use_backend %[ssl_fc_sni]

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1. Check if docker zone exists in firewall-cmd

$ firewall-cmd --get-active-zones

2. If "docker" zone is available, change interface to docker0 (not persisted)

$ sudo firewall-cmd --zone=docker --change-interface=docker0

3. If "docker" zone is available, change interface to docker0 (persisted, thanks rbjorklin)

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Enable native memory tracking in JVM by specifying the following flag

-XX:NativeMemoryTracking=detail

Know the <PID> of the java process

jps

To print ps based RSS

ps -p <PID> -o pcpu,rss,size,vsize

To print native memory tracking summary

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## YOUTUBE VIDEO PART I: https://youtu.be/iZzx1keKztY
##
import pyautogui
from time import sleep

##
# пауза и досрочное прекращение
pyautogui.PAUSE = 1.5
pyautogui.FAILSAFE = True
##

ziplex

To install tcptraceroute on Debian/Ubuntu:

$ sudo apt-get install tcptraceroute

To install tcptraceroute on CentOS/REHL, first set up RepoForge on your system, and then:

$ sudo yum install tcptraceroute

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#!/usr/bin/env python3
"""Command generator for setting DHCP Option 119

This script converts the specified domain names to DHCP Option 119
(Domain Search Option) and prints commands for various DHCP servers.

USAGE:
  ./dhcp_option119.py DOMAIN ...

EXAMPLE:

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-- Thank @sbengo to figure out foreign_keys constraints is defaults to false in sqlite
-- Enable to delete logs by cascading delete
PRAGMA foreign_keys = ON;

WITH n_build_ids_per_repo as (
  SELECT build_id
  FROM (
    SELECT
      build_id,
      build_repo_id,