derjohn derjohn

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

DB

ovs-vsctl list open_vswitch
ovs-vsctl list interface
ovs-vsctl list interface vxlan-ac000344
ovs-vsctl --columns=options list interface vxlan-ac000344
ovs-vsctl --columns=ofport,name list Interface
ovs-vsctl --columns=ofport,name --format=table list Interface
ovs-vsctl -f csv --no-heading --columns=_uuid list controller
ovs-vsctl -f csv --no-heading -d bare --columns=other_config list port

Backing up and recovering 2FA tokens from FreeOTP

NOTE: THIS MAY NOT WORK ANYMORE - SEE COMMENTS

Backing up FreeOTP

Using adb, create a backup of the app using the following command:

adb backup -f freeotp-backup.ab -apk org.fedorahosted.freeotp

	#!/bin/bash

	function cleanup {
	# Remove JNLP file and SSH process
	rm -f $HOST.jviewer.jnlp
	kill $!
	}

	USAGE="Usage: $0 -p <SSH proxy host> <hostname> <username>"

	#!/bin/bash
	#
	# Script for updating a running Ceph Hammer cluster to Jewel
	#
	# This has to be run on the OSD node(s) as root
	#
	# Written for and tested on CentOS 7
	#
	# Used to upgrade Ceph at ODC-Noord in the Netherlands
	#

	#!/bin/bash
	# Fetch 24-hour AWS STS session token and set appropriate environment variables.
	# See http://docs.aws.amazon.com/cli/latest/reference/sts/get-session-token.html .
	# You must have jq installed and in your PATH https://stedolan.github.io/jq/ .
	# Add this function to your .bashrc or save it to a file and source that file from .bashrc .
	# https://gist.github.com/ddgenome/f13f15dd01fb88538dd6fac8c7e73f8c
	#
	# usage: aws-creds MFA_TOKEN [OTHER_AWS_STS_GET-SESSION-TOKEN_OPTIONS...]
	function aws-creds () {
	local pkg=aws-creds

	#!/bin/bash

	# Put into /lib/systemd/system-sleep/suspend-modules
	# chmod a+x /lib/systemd/system-sleep/suspend-modules

	# Create /etc/suspend-modules.conf
	# with one module per line

	# credits to:
	# https://bbs.archlinux.org/viewtopic.php?pid=1540125#p1540125

	# /etc/systemd/system/iperf3.service
	# User service: $HOME/.config/systemd/user/iperf3.service

	[Unit]
	Description=iperf3 server
	After=syslog.target network.target auditd.service

	[Service]
	ExecStart=/usr/bin/iperf3 -s

	# display VPC ID, CIDR Block and Name
	aws ec2 --output text --query 'Vpcs[*].{VpcId:VpcId,Name:Tags[?Key==`Name`].Value\|[0],CidrBlock:CidrBlock}' describe-vpcs

	#!/sbin/sh

	#open adb shell
	adb shell

	#listing partitions (general command for Android devices)
	#ls -l /dev/block/platform/<block_device_name>/by-name/

	#for the Galaxy Note 3
	ls -l /dev/block/platform/msm_sdcc.1/by-name/