vchavkov82

Installing Kubernetes on Proxox

For this example i shall be using a dedicated server from Hertzner.https://www.hetzner.de/en/. A shout out to hetzner if your looking for cheap and beefy dedicated hosting then these guys are your best bet.

Setting up the Hertzer server

This guide assumes your server has Debian 8 (Jessie installed)

Config when tested

LInux

Three system configuration parameters must be set to support a large number of open files and TCP connections with large bursts of messages. Changes can be made using the /etc/rc.d/rc.local or /etc/sysctl.conf script to preserve changes after reboot.

1. /proc/sys/fs/file-max: The maximum number of concurrently open files.

fs.file-max = 1000000

2. /proc/sys/net/ipv4/tcp_max_syn_backlog: Maximum number of remembered connection requests, which are still did not receive an acknowledgment from connecting client. The default value is 1024 for systems with more than 128Mb of memory, and 128 for low memory machines.

net.ipv4.tcp_max_syn_backlog = 3240000

3. /proc/sys/net/core/somaxconn: Limit of socket listen() backlog, known in userspace as SOMAXCONN. Defaults to 128.

net.core.somaxconn = 3240000

Creating a Minio S3 Blobstore on NXRM 3.13

This is a quick guide on creating using the NXRM S3 blob store with Minio's S3 implementation. Disclaimer: Using Minio with NXRM is not officially supported by Sonatype.

Step 1: Start Minio locally

Follow the quick start guide here: https://github.com/minio/minio. For my testing, I started minio with docker with

Occasionally we will deploy a virtual instance into our KVM infrastructure and realize after the fact that we need more local disk space available. This is the process we use to expand the disk image. This process assumes the following:

You're using legacy disk partitions. The process for LVM is similar and I will describe that in another post.
The partition you need to resize is the last partition on the disk.

This process will work with either a qcow2 or raw disk image. For

	# 1. Select first the resolution you would like to get the modeline (preferably the screen native resolution)
	$ cvt 1920 1080
	# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
	Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync

	# 2. Identify your screen name (here VGA-0 with a low res)
	$ xrandr
	Screen 0: minimum 8 x 8, current 2560 x 1080, maximum 16384 x 16384
	VGA-0 connected 640x480+1920+0 (normal left inverted right x axis y axis) 0mm x 0mm
	640x480 59.9*+

	# deb cdrom:[Ubuntu 19.10 _Eoan Ermine_ - Release amd64 (20191017)]/ eoan main restricted

	# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
	# newer versions of the distribution.
	deb http://id.archive.ubuntu.com/ubuntu/ eoan main restricted
	# deb-src http://id.archive.ubuntu.com/ubuntu/ eoan main restricted

	## Major bug fix updates produced after the final release of the
	## distribution.
	deb http://id.archive.ubuntu.com/ubuntu/ eoan-updates main restricted

	<mirrors>
	<mirror>
	<!--This is used to direct the public snapshots repo in the profile below over to a different nexus group -->
	<id>nexus-public-snapshots</id>
	<mirrorOf>public-snapshots</mirrorOf>
	<url>http://localhost:8081/nexus/content/groups/public-snapshots</url>
	</mirror>
	<mirror>
	<!--This sends everything else to /public -->
	<id>nexus-public-releases</id>

	KEYBINDINGS
	byobu keybindings can be user defined in /usr/share/byobu/keybindings/ (or within .screenrc if byobu-export was used). The common key bindings
	are:

	F2 - Create a new window

	F3 - Move to previous window

	F4 - Move to next window

	curl -s https://swupdate.openvpn.net/repos/repo-public.gpg \| apt-key add -
	echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" > /etc/apt/sources.list.d/openvpn-aptrepo.list
	apt update
	apt install -y openvpn

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048