I have multiple RDS over AWS with multiple databases with each RDS. Now i want to configure read replica with few databases of different RDS at single destination server. But AWS doesn't allowed me this options, It allows to configure read replica of complete RDS only.
Please help me with your suggestions.
Thank you.
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im running mysql 5.7 in my AWS RDS. I wanted to migrate the DB to my GCP without downtime.
How this can be done? Can i create a replica to GCP and use it as Master DB in GCP environement
yes, you could create a replicate to external mysql, you could find guideline as below link.
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/MySQL.Procedural.Importing.External.Repl.html
After you switch to gcp, you could still set the replicate the reverse way to aws rds mysql.
Also you could find more detailed steps in below aurora doc link. it contains the configuration for aurora, rds mysql, mysql.
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Replication.MySQL.html
I would like to sync the local MySQL database to Amazon RDS MySQL database. I found a solution for EC2 to RDS but not for Local Database to RDS.
I built a database including 12 tables which all I want to get backup them to cloud periodically or automatically.
I do not want to run EC2 server since I need only MySQL database to get backup on cloud.
I need a solution like Microsoft Database Sync Agent. Whenever changes detected in Local Database, it should be synced to the cloud database. How can I make this happen?
You could use the AWS Database Migration Service:
AWS Database Migration Service (AWS DMS) is a cloud service that makes it easy to migrate relational databases, data warehouses, NoSQL databases, and other types of data stores. You can use AWS DMS to migrate your data into the AWS Cloud, between on-premises instances (through an AWS Cloud setup), or between combinations of cloud and on-premises setups.
With AWS DMS, you can perform one-time migrations, and you can replicate ongoing changes to keep sources and targets in sync.
You can achieve this by following below steps.
Make a replica of local server to RDS.
Enable Query logging in local Database
Create a cron job which will process logging queries and it will execute queries on RDS instance in same order.
To generate a replica to RDS you can follow below steps.
You can't replicate your local database to RDS directly. Your need to dump you data and then after you can import it on RDS.
Instead of generating a dump file you can directly import data into RDS using below command.
mysqldump db_name | mysql -h 'other_hostname' db_name
You can find our more about this over here.
https://dev.mysql.com/doc/refman/5.7/en/copying-databases.html
Also first import tables & it's data then after import your triggers, routines & events. If you import together then there is a chances to get conflict and you job will be terminated.
I am new to Amazon RDS, and looking to get answer for my question below and couldn't find the answer on stackoverflow yet.
I have a MySQL Database on premise that I want to synchronize with the MySQL Database on Amazon RDS. I understand that replication is possible with Amazon RDS, but how about continuous synchronization? Say my existing local database has one transaction that has been made, I want to synchronize just that transaction, either immediately or by schedule, so that I don't need to replicate the whole thing to RDS.
Does RDS have this feature for MySQL or any other database?
If not, what tools should I be using? EC2 + ? ?
Or is there any database that supports this so I can just run the database on EC2?
Your best (first) option should probably be the AWS Database Migration Service. This is a migration service for exactly your use-case.
If uptime is less of an issue, you could always do a mysql_dump, move that to an EC2 instance and load that into an RDS instance.
I want to ask if I have 2 identical ec2 instances each with MySQL. If i add a load balancer on the front of the ec2 instances, the databases of ec2 will have the same data or every database will have the data that process by a request? In other words with elb the databases will be synchronized somehow or every database will have different information?
Many thanks!
I would recommend using Amazon's RDS. It is easier to setup and you do not need to manage the cluster. If you really want to manage the boxes yourself I would look at configuring Galera
Here is a tutorial from Digital Ocean, but it would work on AWS as well.
Hope I don't think two EC2 instances must have same data in MySQL DB. ELB will send request to any EC2 instances so data will update in one instance and not in another instance anyway MySQL DB are not synchronized between instances.
I recommend you to use Amazon RDS service which is relational database and it offers MySQL, MSSQL, PostgreSQL, Oracle and Amazon Aurora. You can use any database and enable high availability for good performance.
I have a ruby on rails run on amazon ec2, database is mySQL.
Now I want to use Amazon RDS to backup this database in case the ec2 fails.
I read through the Amazon RDS user guide,it tells how to create a DB instance.
My question is:
1.what is the relation between created DB instance and my ec2 database?
2.When the DB instance "connect" to my ec2, what will happen?
The data used to send to ec2 mySQL server will be send to DB instance?
Is the database totally shifted to DB instance?So before I connect I should creare a same database in DB instance and tell ec2 send data to RDS ever since
3.If not,how the DB instance know the ec2 is down and takeover the data?
EDIT:
(Unsure)Is it that DB instance is just a place to put database.In order to use it,I need to set up database in DB instance,then connect to it by modifying database.yml file(this file tell rails server where the stored data goes).
How Is it possible to tell when the local database stops then at that time switch to DB instance?
There is absolutely no relationship between your EC2 MySQL DB and the RDS DB Instance. So what you are asking for is just not possible.
A better approach I would say is to have only RDS (No need to have MySQL running locally on EC2 instance). RDS takes snapshots regularly. Also, RDS is a managed service, so most of the MySQL administration tasks are handled by AWS and you don't have to worry. And you can rely on RDS snapshots from Backup perspective.