derjohn derjohn

Docker - How to cleanup (unused) resources

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

// 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

Note: This is a bit of a scratch to see what's involved in getting the ping sensor to work as an I2C backpack.

Jeff Hoeffs [http://github.com/soundanalogous](Sound Analogous) for guidance on using interrupts to do the time measurement on the ATTINY and [https://gist.github.com/soundanalogous/e94c6ebbc457b98b8383](providing a good example to work from)
[http://github.com/rwaldron](Rick Waldron) for support of the backpack idea and keeping me moving. ;)

To remove a submodule you need to:

	#!/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

	#!/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
	#
	# 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

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

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

	# syslog/relp

	grok {
	match => { "@message" => "(?:%{INT:syslog6587_msglen} )?<%{POSINT:syslog_pri}>(?:%{NONNEGINT:syslog5424_ver} )?(?:%{SYSLOGTIMESTAMP:syslog_timestamp}\|%{TIMESTAMP_ISO8601:syslog_timestamp}) %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?(:)? %{GREEDYDATA:syslog_message}" }
	add_field => [ "received_at", "%{@timestamp}" ]
	add_field => [ "received_from", "%{host}" ]
	add_tag => [ "syslog_standard" ]
	tag_on_failure => ["_grokparsefailure-syslog_standard"]
	}

	# don't treat any of these as errors, warnings or info
	ok /setenv /

	# ignore TidyXML warnings
	ok /line [0-9]+ column [0-9]+ - Error:/
	ok /line [0-9]+ column [0-9]+ - Warning:/
	ok /[0-9]+ warning.+ error.+ found!/

	# ignore weird warnings about build variables in Info.plist:
	# e.g. "warning: ignoring operator ':rfc1034Identifier' on 'RSWebClientCore' for macro 'PRODUCT_NAME'"