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ziplex / Open vSwitch Lab.md
Created May 11, 2023 09:48 — forked from gachiemchiep/Open vSwitch Lab.md
Open vSwitch Lab

#Open vSwitch Lab kaskdaksdkdaks

Get started with Open vSwitch, flows and OpenFlow controllers.

##Pre-reqs

Linux system with OVS installed.

##Setup

@ziplex
ziplex / load_dotenv.sh
Created November 10, 2022 06:55 — forked from mihow/load_dotenv.sh
Load environment variables from dotenv / .env file in Bash
if [ ! -f .env ]
then
export $(cat .env | xargs)
fi
@ziplex
ziplex / ssh-ed25519-freebsd.md
Created October 25, 2022 13:05 — forked from denji/ssh-ed25519-freebsd.md
Could not load host key: /etc/ssh/ssh_host_ed25519_key

Generate keys for system SSH deamon

System openssh

Generate all key types:

/etc/rc.d/sshd keygen
@ziplex
ziplex / blog20201221-01.cfg
Created July 15, 2022 16:26 — forked from haproxytechblog/blog20201221-01.cfg
Route SSH Connections with HAProxy
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]
@ziplex
ziplex / Fix.md
Created May 5, 2022 07:57 — forked from reytech-dev/Fix.md
ZONE_CONFLICT: 'docker0' already bound to a zone
  1. Check if docker zone exists in firewall-cmd
$ firewall-cmd --get-active-zones
  1. If "docker" zone is available, change interface to docker0 (not persisted)
$ sudo firewall-cmd --zone=docker --change-interface=docker0
  1. If "docker" zone is available, change interface to docker0 (persisted, thanks rbjorklin)



  


  




    


          
    

      

        
        

          

              @ziplex
          

          

            
                ziplex
                / native-mem-tracking.md
            
            

              Created
              April 11, 2022 11:45
                — forked from prasanthj/native-mem-tracking.md
            

              
                Native memory tracking in JVM
              
          

        

      

        

  

      

    
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



  


  




    


          
    

      

        
        

          

              @ziplex
          

          

            
                ziplex
                / cheat_sheet_and_spongebob_meme.py
            
            

              Created
              January 11, 2022 17:16
                — forked from artemonsh/cheat_sheet_and_spongebob_meme.py
            

          

        

      

        

  

    
    


        



  


  

        

          
          ## 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
          

          

            
                ziplex
                / How to install tcpping on Linux.md
            
            

              Created
              December 22, 2021 08:13
                — forked from cnDelbert/How to install tcpping on Linux.md
            

              
                How to install tcpping on Linux
              
          

        

      

        

  

      

    
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



  


  




    


          
    

      

        
        

          

              @ziplex
          

          

            
                ziplex
                / dhcp_option119.py
            
            

              Created
              November 29, 2021 13:08
                — forked from SmartFinn/dhcp_option119.py
            

              
                a script for converting domain names to DHCP Option 119 (Domain Search Option)
              
          

        

      

        

  

    
    


        



  


  

        

          
          #!/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:
        

  





    


  




    


          
    

      

        
        

          

              @ziplex
          

          

            
                ziplex
                / remove_old_builds.sql
            
            

              Created
              November 5, 2021 11:00
                — forked from david-zw-liu/remove_old_builds.sql
            

              
                Keep 1000 builds per repos for DroneCI (sqlite3 version >= 3.25 required)
              
          

        

      

        

  

    
    


        



  


  

        

          
          -- 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,