Douglas Bett bettdouglas

Simple Installer for Docker Compose on Container-Optimized OS on Google Computing Engine

The easiest way to make Docker Compose available on Container-Optimized OS on Google Compute Engine (GCE) on Google Cloud Platform (GCP).

This is minimal Bash script version of Community Tutorial.

How to use

Simply, download installer.sh, run it, and then reload bash by source ~/.bashrc or re-login.

Google dork cheatsheet

Search filters

Filter	Description	Example
allintext	Searches for occurrences of all the keywords given.	`allintext:"keyword"`
intext	Searches for the occurrences of keywords all at once or one at a time.	`intext:"keyword"`
inurl	Searches for a URL matching one of the keywords.	`inurl:"keyword"`
allinurl	Searches for a URL matching all the keywords in the query.	`allinurl:"keyword"`
intitle	Searches for occurrences of keywords in title all or one.	`intitle:"keyword"`

This article shows how to apply Node.js Stream and a bit of Reactive programming to a real(tm) problem. The article is intended to be highly practical and oriented for an intermediate reader. I intentionally omit some basic explanations. If you miss something try to check the API documentation or its retelling(e.g.: this one)

So, lets start from the problem description. We need to implement a simple web scraper which grabs all the data from some REST API, process the data somehow and inserts into our Database. For simplicity, I omit the details about the actual database and REST API(in real life it was the API of some travel fare aggregator website and a Pg database)

Consider we have two functions(code of the IO simulator functions and the other article code is here):

getAPI(n, count) // pseudo API ca

psql: FATAL: Peer authentication failed for user “postgres” (or any user)

The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql. So you will have to create the UNIX user postgres and then login as postgres or use sudo -u postgres psql database-name for accessing the database (and psql should not ask for a password).

If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a socket connection using psql --host=localhost --dbname=database-name --username=postgres (as pointed out by @meyerson answer) will solve your immediate problem.

But if you intend to force password authentication over Unix sockets instead of the peer method, try changing the following pg_hba.conf* line:

from

	"""
	This example demonstrates using anysync with httpx.
	"""

	import logging

	from anysync import anysync
	from anysync.httpx_patch import Client

	logging.basicConfig(level=logging.INFO)

	-- Snap the points to their closest lines, found in the subquery below
	SELECT
	point_id,
	line_id,
	ST_LINE_INTERPOLATE_POINT(line_geom,
	ST_Line_Locate_Point(line_geom, point_geom)) AS snapped_points --Create the snapped points
	FROM

	--Subquery to find the closest line to each point (within a pre-defined raidus)
	(

	import 'package:flutter/material.dart';
	import 'package:flutter_map/flutter_map.dart' show MapController;
	import 'package:latlong/latlong.dart';

	// ////////////////////////////////////////////////////////////////////////////

	class AnimatedMapController {
	/// Creates an animated MapController
	AnimatedMapController({
	@required this.mapController,

	from sqlalchemy import create_engine
	from sqlalchemy.orm import Session
	from myapp.models import BaseModel
	import pytest


	@pytest.fixture(scope="session")
	def engine():
	return create_engine("postgresql://localhost/test_database")