pawaanv / sysctl.conf

Created June 23, 2020 14:39 — forked from voluntas/sysctl.conf

Sysctl configuration for high performance

	### KERNEL TUNING ###

	# Increase size of file handles and inode cache
	fs.file-max = 2097152

	# Do less swapping
	vm.swappiness = 10
	vm.dirty_ratio = 60
	vm.dirty_background_ratio = 2

pawaanv / sysctl.conf

Created June 23, 2020 14:39 — forked from voluntas/sysctl.conf

Sysctl configuration for high performance

	### KERNEL TUNING ###

	# Increase size of file handles and inode cache
	fs.file-max = 2097152

	# Do less swapping
	vm.swappiness = 10
	vm.dirty_ratio = 60
	vm.dirty_background_ratio = 2

pawaanv / lab-rises.sh

Created July 12, 2018 06:39 — forked from cloudnull/lab-rises.sh

	############################# ON ERL3 #############################
	# First SSH to the ELR3 then edit the configuration
	configure # drops you into the configuration terminal

	# Set the boot file.
	set service dhcp-server shared-network-name LAN1 subnet 172.16.24.0/22 bootfile-name pxelinux.0

	# Set the boot server.
	set service dhcp-server shared-network-name LAN1 subnet 172.16.24.0/22 bootfile-server 172.16.24.90

pawaanv / leeroy.cfg

Created July 10, 2018 18:26 — forked from atuttle/leeroy.cfg

This is my preseed file for auto-installing Ubuntu 11.04 on my Jenkins server

	#### Contents of the preconfiguration file (for squeeze)
	### Localization
	# Preseeding only locale sets language, country and locale.
	# The values can also be preseeded individually for greater flexibility.
	#d-i debian-installer/language string en
	#d-i debian-installer/country string NL
	#d-i debian-installer/locale string en_GB.UTF-8
	# Optionally specify additional locales to be generated.
	#d-i localechooser/supported-locales en_US.UTF-8, nl_NL.UTF-8
	d-i debian-installer/locale string en_US

pawaanv / gist:f8d78ee3f1a62f32492731c19a4aaeb5

Created July 5, 2018 11:40 — forked from hugoduncan/gist:1001548

debian squeeze preseed late_command for automated install of virtualbox guest additions

	# Install virtualbox additions.
	# Requires the guest additions iso connected to the secondary slave.
	# This seems overly complicated, but is a combination
	# that seems to work:
	# the vbox ose packages were somehow being installed by the standard task,
	# the LSB header is required for update-rc.d, which in turn is needed,
	# due to straight linking to rc2.d not working (automatic boot sequence,
	# and dependency management),
	# cdrom source not being removed at the point when this script runs.
	# Deletes /etc/udev/rules.d/70-persistent-net.rules to allow cloning.

pawaanv / make-pxe-environment.sh

Created June 17, 2018 11:59 — forked from gdamjan/make-pxe-environment.sh

Make and start a PXE server

	#!/bin/sh

	mkdir /home/tftproot
	# install syslinux from package and symlink it or just download and extract it
	ln -s /usr/lib/syslinux /home/tftproot/syslinux


	mkdir /home/tftproot/pxelinux.cfg/

	cat > /home/tftproot/pxelinux.cfg/default <<EOF

pawaanv / README

Created June 11, 2018 11:51 — forked from kalxas/README

Customize ubuntu live image

	# first, get the iso from http://releases.ubuntu.com/

	# make working dir hierarchy in /tmp (you'll need enough ram for this)
	sudo mkdir -p /tmp/custom/{_squash,_work,iso,newiso,newlive,project}
	sudo mount -o loop ~/Downloads/ubuntu-15.10-desktop-amd64.iso /tmp/custom/iso
	sudo mount -t squashfs /tmp/custom/iso/casper/filesystem.squashfs /tmp/custom/_squash
	sudo mount -t overlay overlay -onoatime,lowerdir=/tmp/custom/_squash,upperdir=/tmp/custom/project,workdir=/tmp/custom/_work /tmp/custom/newlive

	# customize the live fs with systemd-nspawn (a better chroot)
	sudo systemd-nspawn --bind-ro=/etc/resolv.conf:/run/resolvconf/resolv.conf --setenv=RUNLEVEL=1 -D /tmp/custom/newlive

pawaanv / virt-install-fedora.sh

Created April 8, 2018 00:46 — forked from goldmann/virt-install-fedora.sh

	#!/bin/bash

	if ! [ $# -eq 1 ]; then
	echo "Usage: $0 <node-name>"
	exit 1
	fi

	# Make sure you have all dependencies:
	# yum -y install libguestfs-tools virt-install

pawaanv / README.md

Created March 18, 2018 10:37 — forked from hofmannsven/README.md

Simple Command Line Cheatsheet

Command Line Crash Course

Cheatsheets

Linux auf einem Blatt

pawaanv / ext4-performance.md

Created February 11, 2018 13:32 — forked from assafmo/ext4-performance.md

Tune ext4 for performance

Adjust ext4 for performance

Mount options

errors=remount-ro,noatime,nouser_xattr,barrier=0

Journal

Check if exists

sudo tune2fs -l /dev/sdXY | fgrep has_journal

Pawan pawaanv