martinrusev

import random


distros = ['debian', 'centos', 'rails', 'django', 'ubuntu','redis', 'mysql', 'mongo', 'db']
providers = ['do-ams','do-nyc', 'ec2-eu-west', 'ec2-us-east', 'do-ams', 'do-sf', 'do-sgp']
region = [1, 2, 3]

for i in range(5):
distro = random.choice(distros)
provider = random.choice(providers)

martinrusev

func main() {
    cmd := os.Args[1] // the first argument is a command we’ll execute on all servers 
    hosts := os.Args[2:] // other arguments (starting from the second one) – the list of servers 
    results := make(chan string, 10) // we’ll write results into the buffered channel of strings
    timeout := time.After(5 * time.Second) // in 5 seconds the message will come to timeout channel

    // initialize the structure with the configuration for ssh packat.
    // makeKeyring() function will be written later
    config := &ssh.ClientConfig{
        User: os.Getenv("LOGNAME"),

martinrusev

# https://askubuntu.com/questions/646850/vmware-5-player-ubuntu-14-04-guest-autofit-open-vm-tools/763131#763131

sudo apt install open-vm-tools open-vm-tools-desktop

vmtoolsd -n vmuser
vmware-user-suid-wrapper

martinrusev

import subprocess
import json
import logging
import os

logger = logging.getLogger(__name__)
from django.conf import settings

if not settings.DISABLED_REMOTE_ENGINE:
	import salt.client

martinrusev

package main

import (
	"crypto/aes"
	"crypto/cipher"
	"crypto/rand"
	"encoding/base64"
	"fmt"
	"io"
)

martinrusev

The Rust Wilderness

There is a lot of confusion out there, when it comes to Go and Rust. People often make comparisons between the two languages and it is very difficult to see the differences until you invest some of your time with each language.

On first glance, Go seemed restrictive and Rust was checking all the feature boxes I wanted in a system programming language.

I started experimenting with both languages and this is what I learned (Spoiler: They don't have much in common):

• Rust is a low level system programming language, very close to C++. With Rust you can write operating systems, kernels, drivers, libraries that work on bare metal, optimize your code with Assembly, etc.

martinrusev

CLOUDWATCH_METRICS = [
	'DiskWriteBytes',
	'DiskReadBytes',
	'NetworkOut',
	'NetworkIn',
	'DiskReadOps',
	'DiskWriteOps', 
	'CPUUtilization'
]

martinrusev

curl -s -w 'ping.amoncx.lookup_time:%{time_namelookup}|gauge
ping.amoncx.connect_time:%{time_connect}|gauge
ping.amoncx.total:%{time_total}|gauge\n' -o /dev/null https://www.amon.cx

martinrusev

openssl req -new -newkey rsa:2048 -nodes -out star_localhost.csr -keyout star_localhost.key -subj "/C=BG/ST=Sofia/L=Sofia/O=Amon/OU=Marketing/CN=*.localhost"
openssl x509 -req -days 365 -in star_localhost.csr -signkey star_localhost.key -out star_localhost.crt

martinrusev

# kill all of the user processes
ps -u amonagent | grep -v PID | awk '{print $1}' | xargs -i kill {}
sleep 2
ps -u amonagent | grep -v PID | awk '{print $1}' | xargs -i kill {}

# Systemd
if which systemctl > /dev/null 2>&1 ; then
    systemctl stop amonagent
# Sysv
else