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.
Related
I'm studying the possibility to switch from an rds mysql (in use and with tables and data inside) to aurora serverless mysql to try to spend less money because the database is used for few operations. I can connect to rds mysql from my pc (dbeaver, mysql workbench and so on) without problems and I can design tables, view data, create users...
Now, I've created the new serverless db and attached to the same vpc and sec group of the first one but I can't connect to it from my pc. I've read on aws guides that there are two solutions:
use ec2 to ssh tunnel requests --> but it's a payware solution;
use cloud9 and connect via terminal --> but organizing a db in this way is not so simple as using a gui client.
For this reasons I've quite understood that serverless is not a good solution for now.
Any idea or suggest?
Thanks in advance
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'm looking to have a master and slave DB on the same server, both in an Amazon RDS instance. Is this possible? I'm using MySQL Workbench to access it and am a little confused with the instructions I have seen so far.
"On the same server" is not possible with Amazon RDS for MySQL, because RDS is a managed service. Amazon provides, configures, and has exclusive access to the actual server where an RDS instance is running... you, the user, do not have direct (shell) access to that machine, so you can't do the kind of customization of configuration that running a master and slave on the same server would require.
Other being not possibile since RDS is a managed MySQL (you don't have SSH access or SUPER privileges) it would be also not that useful:
You make a slave replica for scaling out or for backup/failover, on the same machine it doens't make sense
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.
Running our app on Amazon RDS. How does one review / inspect data in the database? For example, how can I get a list of articles?
My app is running on Ruby on Rails and on Heroku. One method I thought of, is by running the Heroku console command.
Is there a better way to see what data is stored in the RDS database?
I use MySQL Workbench to view data, run queries, and so on. It connects right up to the Amazon RDS MySQL instance using the regular MySQL settings.
Updated:
Be sure to add the ip address of the computer for which you're connecting to the RDS instance to the access list in RDS. IIRC, by default RDS instances will only accept connections from within AWS.
I was using SequelPro but they don't support ssl. Amazon RDS says something to the effect of having to use SSH to connect your EC2 to your RDS.
This is essentially what was done in the following tutorial which uses MySQL Workbench: http://thoughtsandideas.wordpress.com/2012/05/17/monitoring-and-managing-amazon-rds-databases-using-mysql-workbench/
I had also been using SequelPro before but this tutorial is very clear and I was up and running on MySQL Workbench in just a few minutes.