Post on 17-Jan-2015
description
transcript
MySQL replication
(all data everywhere; is it a good idea?)
sarah novotny –sarah@bluegecko.net MySQL and LAMP services
www.BlueGecko.net
①master/slave②master/relay slave/slave③active/passive multi-master④active/active multi-master⑤rings⑥rings + reporting spurs + hot
standbys + relay slaves + read slaves, oh my
www.BlueGecko.net
①master/slave
www.BlueGecko.net
READ ONLY
② Master/relay slave/slave
www.BlueGecko.net
READ ONLY
READ ONLY
③active/passive multi-master
www.BlueGecko.net
READ ONLY
③active/passive multi-master
www.BlueGecko.net
READ ONLY
www.BlueGecko.net
④active/active multi-master
www.BlueGecko.net
read/writeread/write
www.BlueGecko.net
And now we come to rings
⑤rings
www.BlueGecko.net
read/write read/write
read/writeread/write
⑥ oh, my
www.BlueGecko.net
⑥ oh, my
www.BlueGecko.net
Boston ->
London ->
DC ->
Seattle ->
⑥ oh, my
www.BlueGecko.net
Boston ->
London ->
DC ->
Seattle ->
⑥ oh, my
www.BlueGecko.net
n
n application servers
writable ring
readable spokes
⑥ oh, my
www.BlueGecko.net
n application servers
writable ring
readable spokes
⑥oh, my
www.BlueGecko.net
⑦challenges⑧good things⑨why 5.0 still⑩tools
www.BlueGecko.net
⑦challenges
when things go wrong, they go very, very wrong
www.BlueGecko.net
⑦challenges
www.BlueGecko.net
datadrift
⑦challenges
www.BlueGecko.net
application servers in one datacenter may have different data than anotherfor some amount of time
⑦challenges
scaling writes
www.BlueGecko.net
⑧good things
www.BlueGecko.net
never a dullmoment
⑧good things
www.BlueGecko.net
nearly infiniteread scaling
⑧good things
www.BlueGecko.net
4 (usually) identical copies of data
⑧why 5.0 still?
www.BlueGecko.net
replicationbugs
www.BlueGecko.net
⑧why 5.0 still?
tools we use to managethis insanity—
InnotopmaatkitMySQL proxycacti templatesnagios
www.BlueGecko.net
credits
flickr• icons – timothymorgan• MySQL mints – jimwinstead• license plate – severud• vodka – masochismtango• 1 – sarahajohnson• arthur – sierratierra• drift – jarylcabuco• dull -- pagedooley• tools – meanestindian
other
• special thanks to unnamed staff from my unnamed client for suggestions on content and slides
www.BlueGecko.net
flickr• sadface – mlostracco• quadruplets – evilerin• reading – stevecadman• bugs -- bruneskine
Blue Gecko and contact info
• sarah@bluegecko.net• sarah.novotny@gmail.com• @sarahnovotny• @bluegecko• senk on #mysql
www.BlueGecko.net
Blue Gecko provides Remote DBA services for companies around the world
7x24x365 support including monitoring, performance analysis, proactive maintenance and architectural guidance for small and large datasets.