flashvoid

root@kimogi-MacBookAir:/home/kimogi# ifconfig eth0 # original mac
eth0      Link encap:Ethernet  HWaddr bc:f6:85:d7:1a:1a  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

root@kimogi-MacBookAir:/home/kimogi# ifconfig eth0 down
root@kimogi-MacBookAir:/home/kimogi# ifconfig eth0 hw ether de:ad:be:ef:00:00

flashvoid

Adding datacenter

syntax: `vipsmart dc add dc-1,192.168.0.99,9610`

Tells **local dc** to add **candidate dc** dc-1 to the federation.
If **local dc** is not federated yet it will decalre federation consisting
of itself and add **candidate dc**.

Important assumptions:
- **local dc** might not be federated yet, it will create a federation of itself and add **candidate dc**

flashvoid

#!/bin/bash

ip2dec () {
    local a b c d ip=$@
    IFS=. read -r a b c d <<< "$ip"
    printf '%d\n' "$((a * 256 ** 3 + b * 256 ** 2 + c * 256 + d))"
}

die () {
	echo $1

flashvoid

#!/bin/bash

period=$1
shift
pattern=$@

last_timestamp=
while :; do 
	line=$(dmesg | grep "$pattern" | tail -n 1)
	timestamp=$(echo $line | cut -d" " -f1 | sed 's/[]\[]//g')

flashvoid

#!/bin/sh

awk '{ 
	split($0, chars, ""); 
	for (i=1; i<=length($0); i++) { 
		if (flagInLine == 0) { printf ("%-5d", i/32); flagInLine=1 }
		printf("%s%s ", chars[i], chars[i+1]);
		if ((i+1) % 32 == 0) { flagInLine=0; printf "\n"}
		i++
	}

flashvoid

server {
	listen 443;
	server_name localhost;

	root html;
	index index.html index.htm;

	ssl on;
	ssl_certificate cert.pem;
	ssl_certificate_key cert.key;

flashvoid

(stas-policy)ubuntu@ip-192-168-99-10:~$ sudo mdkir /etc/wicd_sdk^C
(stas-policy)ubuntu@ip-192-168-99-10:~$ sudo su
root@ip-192-168-99-10:/home/ubuntu# mkdir /etc/wicd_sdk
root@ip-192-168-99-10:/home/ubuntu# mkdir /etc/wicd_sdk/output
root@ip-192-168-99-10:/home/ubuntu# chown ubuntu:ubuntu /etc/wicd_sdk/output
root@ip-192-168-99-10:/home/ubuntu# exit
(stas-policy)ubuntu@ip-192-168-99-10:~$ touch /etc/wicd_sdk/output/token1
(stas-policy)ubuntu@ip-192-168-99-10:~$ sudo chmod 400 /etc/wicd_sdk
(stas-policy)ubuntu@ip-192-168-99-10:~$ touch /etc/wicd_sdk/output/token2
touch: cannot touch '/etc/wicd_sdk/output/token2': Permission denied

flashvoid

{
  "c1": {
    "hostname": "netlab-1-0xwl",
    "interfaces": {
      "vx1" : {
        "oip": "192.168.1.2/24",
        "vid": 1,
        "remotes": [
          "10.240.0.8"
        ]

flashvoid

1
2
3
4
5
6
7
8
12
31

flashvoid

# поднимаем сервер
# nc -l 9090 &
[1] 13126
# ставим дамп
# tcpdump -i any port 9090 -A &
[2] 13130
# tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on any, link-type LINUX_SLL (Linux cooked), capture size 262144 bytes

# клиент посылает данные серверу