pkieltyka

superpages on:
--------------
# sysctl -a | grep vm  
kern.ipc.semvmx: 32767
kern.vm_guest: none
vm.vmtotal: 
vm.loadavg: { 0.00 0.02 0.02 }
vm.v_free_min: 12793
vm.v_free_target: 53855
vm.v_free_reserved: 2683

KartikTalwar

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

• a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
• H: preserves hard-links
• A: preserves ACLs

jahewson

# Licensed under CC BY 3.0 http://creativecommons.org/licenses/by/3.0/
# Derived works must attribute https://gist.github.com/4492300 at the beginning, and the date.

##################################################################
Installing and Configuring SmartOS on a budget server (with a /29)
##################################################################

# if you find this gist useful, please star it

# please be aware that budget hosting companies usually cut corners somewhere,

gstark

Use tcpdump to monitor mysql

  # Capture the packets
  sudo tcpdump -i eth0 port 3306 -s 65535 -x -n -q -tttt > tcpdump.out

  # analyze all the requests from a given host
  pt-query-digest --type=tcpdump --filter '($event->{host} || $event->{ip} || "") =~ m/192.168.248.64/' tcpdump.out

GABeech

# This is an example of the Stack Exchange Tier 1 HAProxy config
# The only things that have been changed from what we are running are: 
# 1. User names have been removed
# 2. All Passwords have been remove
# 3. IPs have been changed to use the example/documentation ranges
# 4. Rate limit numbers have been changed to randome numbers, don't read into them

userlist stats-auth
        group admin users $admin_user
        user $admin_user insecure-password $some_password

jozic

## test is the program that returns response body
while true; do { echo -e 'HTTP/1.1 200 OK\r\n'; sh test;  } | nc -l 8909; done

## test sample
#!/bin/bash

echo "************PRINT SOME TEXT***************\n"
echo "Hello World!!!"
echo "\n"

tsaarni

*** RSA

# Generate self-signed certificate with RSA 4096 key-pair
openssl req -x509 -nodes -days 3650 -newkey rsa:4096 -keyout rsakey.pem -out rsacert.pem

# print private and public key
openssl rsa -in rsakey.pem -text -noout

# print certificate
openssl x509 -in rsacert.pem -text -noout

0xjac

The repository for the assignment is public and Github does not allow the creation of private forks for public repositories.

The correct way of creating a private frok by duplicating the repo is documented here.

For this assignment the commands are:

1. Create a bare clone of the repository. (This is temporary and will be removed so just do it wherever.)

git clone --bare [email protected]:usi-systems/easytrace.git

Mygod

#!/usr/bin/python3
"""
Copyright 2021 Mygod

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

johnbianchi

#### General PFCTL Commands ####
$ pfctl -d disable                                # packet-filtering
$ pfctl -e enable                                 # packet-filtering
$ pfctl -q                                        # run quiet
$ pfctl -v -v                                     # run even more verbose
#### Loading PF Rules ####
$ pfctl -f /etc/pf.conf                           # load /etc/pf.conf
$ pfctl -n -f /etc/pf.conf                        # parse /etc/pf.conf, but dont load it
$ pfctl -R -f /etc/pf.conf                        # load only the FILTER rules
$ pfctl -N -f /etc/pf.conf                        # load only the NAT rules