Arsham Shirvani arsham

Senior Software Engineer. I'm a Gopher and I love GNU/Linux and Neovim.

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London
@arsham

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arsham / kubernetes_dashboard.md

Last active February 18, 2019 17:11

Install and access #kubernetes #dashboard

Install

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v1.10.1/src/deploy/recommended/kubernetes-dashboard.yaml

Access

kubectl proxy

Then browse to:

arsham / clone_virtualbox_vms.sh

Created January 16, 2019 16:04

Clone a #virtualbox image and start headless

	VBoxManage clonevm original_vm --name new_vm --register

	# Change some properties
	VBoxManage modifyvm new_vm --memory 6144 --vram 64
	VBoxManage modifyvm new_vm --cpus 6
	VBoxManage modifyvm new_vm --bridgeadapter1 enp0s3

	# Start headless
	VBoxManage startvm new_vm --type headless

arsham / virtualbox_export_import.sh

Created January 16, 2019 16:02

Export and import VirtualBox VMs. #virtualbox

	VBoxManage export machine_name -o /path/to/file/machine_name.ova
	VBoxManage import machine_name.ova

arsham / kubeadm_generate_token.sh

Created January 14, 2019 15:07

Generate a token and view the join command. #kubeadm #kubernetes

kubeadm token create --print-join-command

arsham / docker_machine_generate.md

Last active January 11, 2019 14:34

Create a new vm and join the swarm (#docker)

About

We want to create a new vm and join the swarm.

Argument order

name, cpu count, memory, disk

arsham / docker_max_map_count.sh

Created January 10, 2019 23:11

Change max_map_count on multiple #docker machines

	for i in `seq 1 10`; do
	docker-machine ssh vm$i 'echo "vm.max_map_count=300000" \| sudo tee /etc/sysctl.conf ; sudo sysctl -p'
	done

arsham / docker_list_tasks.sh

Created January 10, 2019 23:06

List all tasks on #docker swarm

watch 'docker node ps $(docker node ls -q) | uniq'

arsham / reload_docker_daemon.sh

Created January 10, 2019 17:18

Reload #docker daemon on #docker-machine

	for i in `seq 1 10`;
	do docker-machine ssh vm$i sudo /etc/init.d/docker restart
	done

arsham / internal_network_speed.sh

Created November 13, 2018 16:16

Measure the speed between two servers

	pacman -S iperf3

	# on one server
	iperf3 -s

	# on another
	iperf3 -c <ip_of_server>

arsham / mirror_website.sh

Created August 17, 2018 11:45

Mirror a website with #wget

wget --mirror --convert-links --adjust-extension --page-requisites --no-parent https://example.com

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