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@jorritfolmer
jorritfolmer / qemu-kvm-ovirt-windows-server-2016.md
Last active June 8, 2021 20:25
Installing Windows Server 2016 on oVirt qemu/kvm

Installing Windows Server 2016 on Ovirt v4 qemu/kvm

The install fails with BSOD and "Your PC ran into a problem and needs to restart. We're just collecting some error info, and then we'll restart for you."

Windows installer BSOD on qemu/kvm

After reboot it returns with the following message: "The computer restarted unexpectedly or encountered an unexpected error. Windows installation cannot proceed. To install Windows, click OK to restart the computer, and then restart the installation.":

Windows installer restarted unexpectedly on qemu/kvm

@tkfm-yamaguchi
tkfm-yamaguchi / lang.map.diff
Last active February 5, 2024 19:51
source-highlight's language definition file for YAML
---/usr/share/source-highlight/lang.map.old
+++/usr/share/source-highlight/lang.map
@@ -169,3 +169,5 @@
groovy = groovy.lang
json = json.lang
feature = feature.lang
+yaml = yaml.lang
+yml = yaml.lang
@ursuad
ursuad / kafka-cheat-sheet.md
Last active June 17, 2025 10:00
Quick command reference for Apache Kafka

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 ...

@ammario
ammario / ipint.go
Last active February 7, 2025 05:24
Golang IP <-> int conversion
func ip2int(ip net.IP) uint32 {
if len(ip) == 16 {
return binary.BigEndian.Uint32(ip[12:16])
}
return binary.BigEndian.Uint32(ip)
}
func int2ip(nn uint32) net.IP {
ip := make(net.IP, 4)
binary.BigEndian.PutUint32(ip, nn)
@kmjones1979
kmjones1979 / nginx.conf
Created April 14, 2016 20:18
Example NGINX configuration to dynamically set the local IP address during socket creation
# Example of proxy_bind using variables using split_clients and map
events { worker_connections 2014; }
http {
default_type text/plain;
error_log /var/log/nginx/debug_error.log debug;
server {
@odyssey4me
odyssey4me / user_variables.yml
Last active May 17, 2017 10:45
OpenStack-Ansible Keystone SSL Configuration Example (using haproxy SSL offloading) [kilo]
---
#
# Important required settings
#
# set haproxy to handle ssl offloading
haproxy_ssl: true
# configure the SSL certificates for haproxy
# these file paths are on the deployment host
---
# Copyright 2015, Jean-Philippe Evrard <[email protected]>
#
# 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
#
# Unless required by applicable law or agreed to in writing, software
@scottslowe
scottslowe / ubuntu-1404-preseed
Created May 20, 2015 17:49
This is a preseed file, written for Ubuntu Server 14.04.2, that provides a fully automated installation (assuming the presence of a PXE boot infrastructure and a local HTTP server to provide the installation files).
# Ubuntu Server automated installation
# by Scott Lowe ([email protected])
d-i debian-installer/locale string en_US
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/layoutcode string us
d-i netcfg/choose_interface select eth0
d-i netcfg/get_hostname string hostname
d-i netcfg/get_domain string domain.com
d-i netcfg/wireless_wep string
@stefb69
stefb69 / postfwd.cf
Last active August 19, 2016 13:34
GeoIP postfwd2 plugin
#Example usage
id=SASL_003
HIT_dnsbls >= 2
sasl_username =~ /^(.+)$/
client_country_code !~ /^(FR|IL|US|UK|CA|BE|CH|IT)$/
action = rcpt(sasl_username/3/86400/REJECT your is ip listed as trojaned, only 3 recipient per DAY for $$sasl_username)
@tristanfisher
tristanfisher / Ansible-Vault how-to.md
Last active May 27, 2025 10:11
A short tutorial on how to use Vault in your Ansible workflow. Ansible-vault allows you to more safely store sensitive information in a source code repository or on disk.

Working with ansible-vault


I've been using a lot of Ansible lately and while almost everything has been great, finding a clean way to implement ansible-vault wasn't immediately apparent.

What I decided on was the following: put your secret information into a vars file, reference that vars file from your task, and encrypt the whole vars file using ansible-vault encrypt.

Let's use an example: You're writing an Ansible role and want to encrypt the spoiler for the movie Aliens.