npearce

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

davision

<template lang="html">
  <div v-if="isEnded">
    Ended.
  </div>

  <div v-else>
    <div>Days: {{ days }}</div>
    <div>Hours: {{ hours }}</div>
    <div>Minutes: {{ minutes }}</div>
    <div>Seconds: {{ seconds }}</div>

guumaster

Upload a file with $.ajax to AWS S3 with a pre-signed url

When you read about how to create and consume a pre-signed url on this guide, everything is really easy. You get your Postman and it works like a charm in the first run.

Then you open your browser, try your usual $.ajax() and send your PUT operation, and you hit the cold iced wall of AWS error message, a simple <Code>SignatureDoesNotMatch</Code> that will steal hours from your productivity.

So here I come to save you and give you a free working example of how to upload a file directly to AWS S3 from your browser. You are wellcome :).

rnkoaa

var app = angular.module("modalFormApp", ['ui.bootstrap']);
app.controller("modalAccountFormController", ['$scope', '$modal', '$log',

    function ($scope, $modal, $log) {

        $scope.showForm = function () {
            $scope.message = "Show Form Button Clicked";
            console.log($scope.message);

            var modalInstance = $modal.open({

skyrocknroll

#!/bin/bash
# From here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# Based on: https://github.com/saxenap/install-redis-amazon-linux-centos
# Thanks to https://raw.github.com/gist/2776679/b4f5f5ff85bddfa9e07664de4e8ccf0e115e7b83/install-redis.sh
# Uses redis-server init script from https://raw.github.com/saxenap/install-redis-amazon-linux-centos/master/redis-server
###############################################
# To use: 
## wget https://raw.github.com/jorgerc/install-redis-amazon-linux-centos/master/redis-install-script.sh
## chmod 777 redis-install-script.sh
## ./redis-install-script.sh

peter

-- Order by one indexed column (FAST)
newsdesk_production=# explain analyze select * from pressreleases order by published_at DESC limit 100;
                                                                                   QUERY PLAN                                                                                    
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=0.00..249.91 rows=100 width=1207) (actual time=26.070..716.453 rows=100 loops=1)
   ->  Index Scan Backward using pressreleases_published_at_index on pressreleases  (cost=0.00..964766.62 rows=386042 width=1207) (actual time=26.067..716.343 rows=100 loops=1)
 Total runtime: 716.709 ms
(3 rows)

- Order by two separately indexed columns (SLOW)