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estimating I/O for aurora from current mysql rds instance

If I have the following averages over the last 4 weeks for mysql rds instance db 1 77.7 writes/second, 8.54 reads/second db 2 108 writes second, 8.56 reads/second (2629746 = seconds in a month) ...
0
votes
1answer
247 views

Are the MariaDB and MySql drivers interchangeable when connecting to a MySQL backend Aurora cluster?

I saw a similar question asked before but I didn't get enough supporting information Does anyone know any new information on this? Can MariaDB connector (driver) be used instead of the MySQL ...
6
votes
1answer
645 views

What is the apgcc schema in Amazon RDS Postgresql?

Recently a mysterious new schema called apgcc appeared in every database in our testing Aurora Postgresql cluster (eu-west region). It is owned by the rdsadmin account. What is it, and where did it ...
2
votes
2answers
676 views

Aurora MySQL 5.7 randomly fails

This is the 5th time. It happens once a week (Tuesday or Wednesday within 03:00-07:00 UTC+0). On the console, it shows available but inaccessible. We try to wait if the instance will recover itself, ...
1
vote
2answers
406 views

MySQL tuning: INNODB_BUFFER_POOL_SIZE not found?

My replicator MySQL db, hosted by Amazon-RDS-Aurora is performing poorly. The DB is quite powerful so performance shouldn't be an issue. When I executed SHOW VARIABLES; I could not find ...
7
votes
1answer
2k views

Why do I get a PostgreSQL permission error when specifying a tablespace in the “create database” command?

When I create a database in PostgreSQL without explicitly specifying a default tablespace the database is created without issue (I'm logged in as the pgsys user): postgres=> create database rich1; ...
1
vote
1answer
2k views

Necessity of having two instances (Reader and Writer) in Amazon Aurora

I'm managing an Amazon Aurora account. Somebody set it up months ago. The service has TWO instances (same AZ): - project - project-eu-central-1b Same class (db.t2.small), but different "Replication ...
3
votes
1answer
495 views

SELECT COUNT(*) returning incorrect results

I am seeing some very strange behavior on PostgreSQL 9.6.3 on RDS Aurora. I am getting duplicate results from certain queries: => select count(id) from foos where id = 'deadbeef'; count ------- ...
3
votes
0answers
1k views

RDS Aurora 5.6 died (randomly?)

Aurora MySQL 5.6.10a I can see these events in the console: February 20, 2018 at 4:27:24 PM UTC+11 <server>-production DB instance restarted February 20, 2018 at 4:26:52 PM UTC+11 <server&...
0
votes
1answer
186 views

Amazon Aurora MySQL5.6 Performance Schema column datatype modified and can't be corrected

I'm having trouble getting performance_schema to work in a few of my Aurora instances. Brand new instances where I enable performance_schema work just fine, but several instances that I've had for ...