Gilang Virga Perdana gilangvperdana

Virt-Manager Installation (for ubuntu based distrib)

This gist will give you all installation steps needed to install properly virt-manager with all dependencies.

Dependencies

Here is the list of all dependencies required to install properly virt-manager on your ubuntu based distrib.

libvirt-bin
qemu

IP Tables (iptables) Cheat Sheet

IPTables is the Firewall service that is available in a lot of different Linux Distributions. While modifiying it might seem daunting at first, this Cheat Sheet should be able to show you just how easy it is to use and how quickly you can be on your way mucking around with your firewall.

Resources

The following list is a great set of documentation for iptables. I used them to compile this documentation.

How-To Geek: The Beginner’s Guide to iptables, the Linux Firewall: https://www.howtogeek.com/177621/the-beginners-guide-to-iptables-the-linux-firewall/
IPTables Essentials: Common Firewall Rules and COmmands https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands

Change default DNS nameserver used by Kubernetes pods

This can be applied generically but usually applies to Linux nodes that have a local caching nameserver running, which means pointing to an IP in the loopback range (127.0.0.0/8). Ubuntu 18.04 Bionic Beaver does this by default.

Option 1: Change host configuration

sudo systemctl mask systemd-resolved
rm -f /etc/resolv.conf
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf

Virtual Networking on Linux

In the Linux Kernel, support for networking hardware and the methods to interact with these devices is standardized by the socket API:

                +----------------+
                |   Socket API   |
                +-------+--------+
                        |
User space              |

Api Call	HTTP Status	UI Behavior	CLI Behavior
PUT "/api/v0/staged/director/properties"	200	*	Continue
PUT "/api/v0/staged/director/availability_zones"	207	Warning (AvailabilityZonesVerifier)	Halt
vv Below this line, I commented the az config before running
PUT "/api/v0/staged/director/networks"	200	Warning (IaasConfigurationVerifier, NetworksExiste

Cloudflare's API Cheat-Sheet

VARIABLE	VALUE
EMAIL	The email address associated with your Cloudflare account.
KEY	The global API key associated with your Cloudflare account.
DOMAIN	The name of the domain to create a zone record for.
JUMP_START	If true, automatically attempts to fetch existing DNS records when creating a domain’s zone record
ZONE_ID	The unique ID of the domain’s zone record. Assigned by Cloudflare. Required when managing an existing zone record and its DNS records.

Microsoft Visual C++ Redistributable Packages

Note

More information you can find on Microsoft documentation.

Tip

You can install all Visual C++ Redistributable Packages using only one command with winget! https://gist.github.com/ChuckMichael/d4221fd8681a7e962c8d37d623ff3145

Microsoft Visual C++ 2005 Redistributable Package

x64 8.0.61000 (EOL) Microsoft.VCRedist.2005.x64

	Some notes from engineering.

	1) Identify the partition

	Mnesia('rabbit@juju-machine-30-lxd-11'): ERROR mnesia_event got {inconsistent_database, running_partitioned_network, 'rabbit@juju-machine-29-lxd-9'}

	$ sudo rabbitmqctl cluster_status

	2) Pick the most reliable node as the master.

	# Source: https://stackoverflow.com/a/43317244
	$path = ".\aws-ec2-key.pem"
	# Reset to remove explict permissions
	icacls.exe $path /reset
	# Give current user explicit read-permission
	icacls.exe $path /GRANT:R "$($env:USERNAME):(R)"
	# Disable inheritance and remove inherited permissions
	icacls.exe $path /inheritance:r

	Options All -Indexes
	# Ultimate htaccess Blacklist 2 from Perishable Press
	# Deny domain access to spammers and other scumbags
	RewriteEngine on
	RewriteBase /
	RewriteCond %{HTTP_USER_AGENT} ADSARobot\|ah-ha\|almaden\|aktuelles\|Anarchie\|amzn_assoc\|ASPSeek\|ASSORT\|ATHENS\|Atomz\|attach\|attache\|autoemailspider\|BackWeb\|Bandit\|BatchFTP\|bdfetch\|big.brother\|BlackWidow\|bmclient\|Boston\ Project\|BravoBrian\ SpiderEngine\ MarcoPolo\|Bot\ mailto:[email protected]\|Buddy\|Bullseye\|bumblebee\|capture\|CherryPicker\|ChinaClaw\|CICC\|clipping\|Collector\|Copier\|Crescent\|Crescent\ Internet\ ToolPak\|Custo\|cyberalert\|DA$\|Deweb\|diagem\|Digger\|Digimarc\|DIIbot\|DISCo\|DISCo\ Pump\|DISCoFinder\|Download\ Demon\|Download\ Wonder\|Downloader\|Drip\|DSurf15a\|DTS.Agent\|EasyDL\|eCatch\|ecollector\|efp@gmx\.net\|Email\ Extractor\|EirGrabber\|email\|EmailCollector\|EmailSiphon\|EmailWolf\|Express\ WebPictures\|ExtractorPro\|EyeNetIE\|FavOrg\|fastlwspider\|Favorites\ Sweeper\|Fetch\|FEZhead\|FileHound\|FlashGet\ WebWasher\|FlickBot\|fluffy\|FrontPage\|GalaxyBot\|Generic\|Getleft\|GetRight\|