Stan Svec StanSvec

Anchors in Markdown

To create an anchor to a heading in github flavored markdown. Add - characters between each word in the heading and wrap the value in parens (#some-markdown-heading) so your link should look like so:

[create an anchor](#anchors-in-markdown)

I have the following file structure:

Y:\tmp\test
|   main.groovy
|
\---impl
        FooImpl.groovy

With Docker 1.8.0 shipped new log-driver for GELF via UDP, this means that the logs from Docker Container(s) can be shipped directly to the ELK stack for further analysis.
This tutorial will illustrate how to use the GELF log-driver with Docker engine.
Step 1: Setup ELK Stack:
- docker run -d --name es elasticsearch
- docker run -d --name logstash --link es:elasticsearch logstash -v /tmp/logstash.conf:/config-dir/logstash.conf logstash logstash -f /config-dir/logstash.conf
- Note the config for Logstash can be found at this link
- docker run --link es:elasticsearch -d kibana
Once the ELK stack is up now let's fire up our nginx container which ships its logs to ELK stack.

LOGSTASH_ADDRESS=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' logstash)
`docker run -d --net=host --log-driver=gelf --log-opt gelf-address=u

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	"""
	Simple demonstration of how to implement Server-sent events (SSE) in Python
	using Bottle micro web-framework.

	SSE require asynchronous request handling, but it's tricky with WSGI. One way
	to achieve that is to use gevent library as shown here.

	Usage: just start the script and open http://localhost:8080/ in your browser.

	Based on:

	#!/usr/bin/python

	# demo from here: http://pymotw.com/2/urllib2/index.html#uploading-files

	import itertools
	import mimetools
	import mimetypes
	from cStringIO import StringIO
	import urllib
	import urllib2

	{
	"Statement": [
	{
	"Sid": "PackerSecurityGroupAccess",
	"Action": [
	"ec2:CreateSecurityGroup",
	"ec2:DeleteSecurityGroup",
	"ec2:DescribeSecurityGroups",
	"ec2:AuthorizeSecurityGroupIngress",
	"ec2:RevokeSecurityGroupIngress"

	# -- coding: utf-8 --
	import socket
	import os

	print("Connecting...")
	if os.path.exists("/tmp/python_unix_sockets_example"):
	client = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
	client.connect("/tmp/python_unix_sockets_example")
	print("Ready.")
	print("Ctrl-C to quit.")

	git branch -m old_branch new_branch # Rename branch locally
	git push origin :old_branch # Delete the old branch
	git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote

	#!/usr/bin/env bash
	#
	# Get the value of a tag for a running EC2 instance.
	#
	# This can be useful within bootstrapping scripts ("user-data").
	#
	# Note the EC3 instance needs to have an IAM role that lets it read tags. The policy
	# JSON for this looks like:
	#
	# {