utdrmac

// If the host with the VIP is up, this removes it
ip addr del 10.20.43.184/32 dev eth2
 
// Add VIP to new host
ip addr add 10.20.43.184/32 dev eth2
/sbin/arping -c 5 -U -I eth2 10.20.43.184

utdrmac

-- Option 1
SELECT * 
FROM title t 
WHERE kind_id = 1 AND id >= FLOOR(1 + RAND() * (SELECT MAX(id) FROM title)) LIMIT 1;

-- Option 2
SELECT id, title
FROM title t RIGHT JOIN
(SELECT CEIL(RAND() * (SELECT MAX(id) FROM title WHERE kind_id = 1)) AS id) h USING (id);

utdrmac

SELECT count(*) TABLES,
concat(round(sum(table_rows)/1000000,2),'M') rows,
concat(round(sum(data_length)/(1024*1024*1024),2),'G') DATA,
concat(round(sum(index_length)/(1024*1024*1024),2),'G') idx,
concat(round(sum(data_length+index_length)/(1024*1024*1024),2),'G') total_size,
round(sum(index_length)/sum(data_length),2) idxfrac, engine
FROM information_schema.TABLES
WHERE table_type != 'VIEW' AND table_schema NOT IN ('mysql', 'performance_schema', 'information_schema')
GROUP BY engine;

utdrmac

#!/bin/bash

# A title for the notification
title="Slave - ${HOSTNAME}"

# PushBullet API Token
# https://www.pushbullet.com/#settings/account
token="C17CdC7b0XXXXXXXX1idCdATgVjbfEY"

# Send a notification every X minutes

utdrmac

SELECT t.table_schema, t.engine, t.table_name, c.column_name, c.column_type
FROM information_schema.tables AS t 
INNER JOIN information_schema.columns AS c ON c.table_schema = t.table_schema 
AND c.table_name = t.table_name
LEFT OUTER JOIN information_schema.innodb_sys_tables AS ist 
ON ist.name = concat(t.table_schema,'/',t.table_name)
LEFT OUTER JOIN information_schema.innodb_sys_columns AS isc 
ON isc.table_id = ist.table_id AND isc.name = c.column_name 
WHERE c.column_type IN ('time','timestamp','datetime')
AND t.table_schema NOT IN ('mysql','information_schema','performance_schema')

utdrmac

#!/usr/bin/env php
<?php

include 'config.php';

/* This is the EC2 API Client object */
$sqs = Aws\Sqs\SqsClient::factory(array(
	'key' => $aws_key,
	'secret' => $aws_secret,
	'region' => 'us-west-2',

utdrmac

#!/bin/bash

# This script will use the results from pt-table-checksum ran on the master and verify
# if any chunks are actually different. This is necessary because of the way NDB
# bundles up transactions within a single epoch. If a table is found to be inconsistent,
# pt-table-sync will use an explicit full table lock on the master during the comparison.

# Save output to log file
reportfile=$(mktemp /tmp/checksumreport.XXXXX)
exec 2>&1 >$reportfile

utdrmac

#!/bin/bash

mysql -e "TRUNCATE TABLE percona.checksums"

pt-table-checksum --no-check-binlog-format --no-check-replication-filters --engines ndbcluster --tables $below

# Get all NDB tables
# mysql information_schema -BNe "SELECT CONCAT(table_schema,'.',table_name) FROM tables
#  WHERE table_schema NOT IN ('mysql',' ndbinfo','percona','information_schema')
#  AND engine = 'ndbcluster'" >/root/ndb_tables.txt

utdrmac

Keybase proof

I hereby claim:

• I am utdrmac on github.
• I am utdrmac (https://keybase.io/utdrmac) on keybase.
• I have a public key ASBe9_sYtgbqJWYn6uB5b2tkVuDEvqzD3zH8Y9uJ2qTcWAo

To claim this, I am signing this object:

utdrmac

/* 
 * guider 1.0
 * Matthew Boehm <mboehm@paypal.com> <matthew@matthewboehm.com>
 *
 * GUIDer reads in a file of global identifiers (GUIDs) and retrieves
 * obfuscated data out of databases. This is done using pipe() to create
 * a producer/consumer set-up. We create a pool of mysql connections
 * and pthread out user-supplied number of threads to handle data.
 * Each thread waits and reads 1 GUID off the front of the pipe() and processes
 * it, outputting results to stdout. Once done with that set of queries, this