XiaochenCui

# ------------------------------------------------
# Config files are located in /etc/wireguard/wg0
# ------------------------------------------------

# ---------- Server Config ----------
[Interface]
Address = 10.10.0.1/24 # IPV4 CIDR 
Address = fd86:ea04:1111::1/64 # IPV6 CIDR 
PostUp = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE; ip6tables -A FORWARD -i wg0 -j ACCEPT; ip6tables -t nat -A POSTROUTING -o eth0 -j MASQUERADE # Add forwarding when VPN is started
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE; ip6tables -D FORWARD -i wg0 -j ACCEPT; ip6tables -t nat -D POSTROUTING -o eth0 -j MASQUERADE # Remove forwarding when VPN is shutdown

XiaochenCui

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

XiaochenCui

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

XiaochenCui

# -*- coding: utf-8 -*-
from twisted.internet.task import LoopingCall


class Countdown(object):
    _instances = set()

    def __init__(self, count_to):
        self.counter = count_to

XiaochenCui

[user]
	name = Pavan Kumar Sunkara
	email = pavan.sss1991@gmail.com
[core]
	editor = vim
	whitespace = fix,-indent-with-non-tab,trailing-space,cr-at-eol
	excludesfile = ~/.gitignore
[sendemail]
	smtpencryption = tls
	smtpserver = smtp.gmail.com