mysql – RDS Aurora – get the number of bytes scanned by a query?

Is it possible to get the number of bytes read by a query in Aurora? If it is not at the query level, is it possible to have it at the table level?

I have investigated performance statistics and performance_schema tables, but they all seem to have data only for ROWS_SCANNED, not the number of physical bytes. The metrics for I / O in performance statistics also appear to be at the database level, not in the table.

amazon rds – 2nd AWS Aurora RDS reader not used

Running a Aurora RDS Postgres with a writer and two readers.

One reader is used a lot, but the other is hardly used according to CloudWatch.

Cloudwatch

The Laravel application is connected to points of the reading host to the endpoint of the reader cluster so that Aurora can balance internally, but does not seem to be doing that, but only favors the first reader.

Are there any incorrect settings in the RDS or something else?

Apply a DDL statement with zero downtime with Aurora Mysql

I have an Aurora Mysql 5.6.10a db cluster with a teacher and a reading, to which I need to apply a migration with a downtime close to zero. I am trying to get a comment field to accept emojis by updating the encoding to utf8mb4. Because I am running this in millions of rows, this is an expensive update.

alter table tablename modify `comments` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL;

Reading the AWS documentation, I am exploring the update in a replica of my production database and then I use failover to exchange instances. However, I encounter problems with blocking the query. The steps I have done are:

1) Update the cluster parameter group for replication with the new encodings / collation. Expected by resynchronization.

2) The read_only flag was updated to false in both the paramgroup group and the param group, for replication. We wait for the update to apply. I also launched a reboot just in case.

3) SELECT @@global.read_only; sample 0 for this value, so it has been updated.

The execution of the DDL query results in:

ERROR 1290 (HY000): The MySQL server is running with the --read-only option so it cannot execute this statement

I have also received:

ERROR 2013 (HY000): Lost connection to MySQL server during query

In the back of my mind, it occurs to me that all my approach is terrible. Now I will simply add a new column at the end of my table and update my application to point to the new column for a less risky approach.

But, since I have now spent 2 hours trying to simply run my DDL, I am invested and hate not understanding why I cannot execute the above. I guess this is a limitation of Aurora / replication based on the nature of the query, but I would like an authorized response to what is happening.

– EDIT –

Ok, apparently, even adding a new column to my table still results in a table lock, so I go back to the starting point. I didn't think that would happen. What is the best practice here?

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amazon rds: cannot connect to the RDS Aurora Mysql database even if it exists

We have an instance of RDS aurora mysql that has been running for a while without problems, however, today the connection of our application to the database failed, with an error ERROR 1049 (42000): Unknown database 'campspot_development'.

Things we have tried:
The connection to the database without specifying the name of the database is successful:
mysql -h write.staging-database.campspot.com -u campspot_staging -p

SHOW DATABASES; returns the database in question.

mysql> SHOW DATABASES;
+----------------------+
| Database |
+----------------------+
| information_schema |
| campspot_development |
+----------------------+
2 rows in set (0.01 sec)

If we connect using the chain above and check USE campspot_development Not successful. But if we execute a query with the default scheme to the table, it works.

SELECT * FROM campspot_development.Park;

The connection while specifying the database is unsuccessful, resulting in an unknown database error:
mysql -h write.staging-database.campspot.com -u campspot_staging -p campspot_development

What could be causing the database to be searchable and displayed in the database list, but to stop connecting directly?

hdr: what is the optimal resolution setting to send a plain picture of Capture One to Aurora?

I am trying to send a group of raw photos from Capture One to Aurora to create an HDR image.

A dialog box appears when I do it

enter the description of the image here

I think most of the options are fine, except & # 39; Resolution & # 39 ;: I'm not sure if & # 39; 300 px / in & # 39; It is the right value. I am not entirely clear about the original resolution of the original images (I am using a Fujifilm xt-20). I don't want to pass plain files to Aurora with less resolution.

What is the optimal value for the Resolution field in this case?

Amazon Web Services – AWS Aurora – How to enable serverless mode through CLI

I am using the following command to create an AWS Aurora Serverless instance

aws rds create-db-cluster --db-cluster-identifier test-cluster --database-name testdb --master-username test --master-user-password testtest --engine aurora --engine-mode serverless --region us-east-1

But I am getting the following error.

Unknown options: – server mode, no server

The above command works very well in my AWS account, but it does not work in my clients account. (I only have programmatic access to that account). I have verified the permits twice and I have similar permits to those of my own account.

Summary: The AWS command to create an aurora cluster without a server is working on one account but not on another account with similar permissions.

Account 1:
account1

Account2:
acc2

Migration from MySQL 5.7.10 to Aurora (MySQL) -5.6.10a Without server and switching sql_mode

I'm looking to migrate my managed locally MySQL 5.7.10 database for Amazon Aurora Serverless. I'm tired of managing my database manually and I'd like to use an auto-scaling function Aurora Serverless.

Until now only Aurora (MySQL) -5.6.10a It is available for use in the serverless variant. MySQL 5.7.10 have sql_mode by default set in ONLY_FULL_GROUP_BY, STRICT_TRANS_TABLES, NO_ZERO_IN_DATE, NO_ZERO_DATE, ERROR_FOR_DIVISION_BY_ZERO, NO_AUTO_CREATE_USER, NO_ENGINE_SUBSTITUTION.

I noticed the difference between sql_mode& # 39; s in both databases because my application manages the balances of users and without STRICT_TRANS_TABLES the database only returns a warning if the user tries to spend more than he has in balance (the type of balance is a numeric value without sign) instead of throwing an error. Adjustment sql_mode to the values ​​above solve the problem.

However, I wonder if the configuration sql_mode to these values ​​in Aurora (MySQL) -5.6.10a It has some performance / autoscalling drawback or it can cause problems.

aurora postgresql logs – Database administrators stack up exchange

We are in the process of sending Aurora PostgreSQL records to a SIEM records management solution.

However, there does not seem to be an option to publish Aurora PostgreSQL in the Cloudwatch registry group. Is there any other way in which we can publish Aurora PostgreSQL records in an S3 repository or on any remote server from which the records management solution can read the records?