aaronpeterson

Vultr Block Storage for MySQL

datadir + tmpdir on Ubuntu 22.04 LTS

I had a somewhat ephemeral use-case for mysql server but due to some heavy indexes (and tmp dir usage) the disk kept running out of room on smallish instances.

How to run

• Create your Block Storage and Vultr instance in the same region
• Under Block Storage settings, "attach" to your instance.

aaronpeterson

wpa_supplicant Mesh Problem Reference

This is a living document to track the failure of wpa_supplicant.

"NetworkManager switches to the worse one of two APs all the time"

Thanks, so I've looked into this now, and it indeed some to be an issue with wpa_supplicant: In its decision logic whether to roam between APs it basically uses estimated bandwith as first priority (https://w1.fi/cgit/hostap/tree/wpa_supplicant/events.c#n1927), so if another AP can do ht40 while the current one only has ht20, it will switch to the other one while (pretty much) ignoring how bad the signal quality is. ref

aaronpeterson

// console.log(bitmagic("b[1010]d[3,2]h[02,2]"));
// console.log(bitmagic("b[10]d[1,2]h[0A]"));

/**
 * Bitmagic the Freewheelin' bitmiser
 * 
 * Use any combination of bits, numbers or hex and output a nice-lookin' byte
 * 
 * Usage: b[binary]d[decimal,padding?]h[hex,padding?]
 *

aaronpeterson

/**
 * Was "Get domain name without subdomains using JavaScript?" on StackOverflow
 * https://stackoverflow.com/questions/9752963/get-domain-name-without-subdomains-using-javascript
 */

const tests = {
  'www.sidanmor.com':             'sidanmor.com',
  'exemple.com':                  'exemple.com',
  'argos.co.uk':                  'argos.co.uk',
  'www.civilwar.museum':          'civilwar.museum',

aaronpeterson

/**
 * An improvement to this would be linear or eponential increase of wait ms
 * with a threshold to give up...
 *
 */
async function getTaggings(bucket, key, wait) {
    let params = {
        Bucket: bucket,
        Key: key
    };

aaronpeterson

# Couldn't get this running on any Ubuntu instances.
# Today I used AWS CentOS Linux 7 x86_64 HVM EBS 1602-b7ee8a69-ee97-4a49-9e68-afaee216db2e-ami-d7e1d2bd.3 (ami-6d1c2007)

# install dependencies
sudo yum install perl perl-DBI expect wget nano

# download binaries for centos 7
wget https://downloads.mariadb.com/enterprise/htxx-hpee/mariadb-columnstore/1.0.0/mariadb-columnstore-1.0.0-centos7.x86_64.rpm.tar.gz

# extract

aaronpeterson

//  main.m
//  creategif
//
//  Created by Kevin Meaney on 21/10/2013.

// I've briefly blogged about it here:
// http://blog.yvs.eu.com/2013/10/creating-gif-animations-using-coreimagequartz
// The following code is all that is all the code needed for a creating a command line tool to generate
// a gif animation from image files. 
// The main limitation with this code is that apart from the frame delay time of 0.1 second, every

aaronpeterson

var when = {
    /**
     * Convert Dateish to js Date
     * @param  mixed string|Date dateish date-like string for Date constructor
     * @return Date js Date or null
     */
    its: function(dateish) {
        if (!dateish) {
            return null;
        }

aaronpeterson

    var objectToQueryString = function (a) {
        var prefix, s, add, name, r20, output;
        s = [];
        r20 = /%20/g;
        add = function (key, value) {
            // If value is a function, invoke it and return its value
            value = ( typeof value == 'function' ) ? value() : ( value == null ? "" : value );
            s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value);
        };
        if (a instanceof Array) {

aaronpeterson

<?php

$data = array(
	'namespace' => array(
		'foo' => array(
			'bar' => 'You found me!'
		)
	)
);