I have aws rds aurora database for the production environment. And I have to build a database for the development environment.
I tried it by using aws database migration service(DMS), snapshot, mysqldump.
First, DMS didn't support migrating Auto_Increment column and Indexes. But I need them.
Second, Snapshot overwrite production database's user data(MySQL user data - using when connecting to MySQL) to the development database. And I want to maintain them differently.
Last, mysqldump is so slow and I concerned about mysqldump may cause down performance to production database.
So, I'm looking for the other way.
The below things are what I want:
Every information(w/o MySQL user data) such as Auto_Increment, Indexes are must be migrated.
Development environment database is must be sync to production database(reset and re-migrate) every day automatically.
Migration process as faster and lower downing performance as possible is the best.
Does anyone know how to build it?
Using an AWS DMS task, you can specify what schema to migrate and the type of migration.
The page should look similar to the following
Amazon RDS automatically creates a primary
DB Instance and synchronously replicates the data to a standby instance in a different
Availability Zone (AZ). Each AZ runs on its own physically distinct, independent
infrastructure, and is engineered to be highly reliable.
Yes you can. Migrations are among the most time-consuming tasks handled by the database
administrators (DBAs). Although the task becomes easier with the advent of
managed migration services such as the AWS Database Migration Service (AWS
DMS), many large-scale database migrations still require a custom approach
due to performance, manageability, and compatibility requirements.
Extra
*Amazon RDS provides high availability and failover support for DB instances using Multi-AZ- deployments.
*ElastiCache improves the performance of your database through caching query results
Related
What better way to do a quick migration from RDS MySQL 5.7 from São Paulo/Brazil to RDS Aurora in Northern Virginia, from a large database (probably more than 25GB of dump).
But I can not leave the database stopped for more than 3 hours (
or probably less), because this database is production of a company.
Thank you very much in advance.
In the region of São Paulo no have MySQL Aurora (One of the reasons to do the migration, in addition to the costs being twice as much compared to Northern Virginia)
RDS may be publicly accessible only during migration if necessary.
I will not be able to use Multi-AZ. Would it be feasible to use "AWS Database Migration Service"?
I will also have to migrate the instances EC2 and S3 linked to this database, mainly EC2 to avoid latency problems.
After the migration will be stopped all services in the region of São Paulo.
The main reasons as I said before is the reduction of costs in the long and short term (will be considered the use of reserved instances) and also performance, and instances EC2 to avoid problems of latency and instability.
You are making a mistake trying to move the database and change the engine from MySQL to Aurora at the same time.
Migrate the MySQL 5.7 system now, and convert to Aurora later. You do not need to ask for trouble, and doing both at the same time is exactly that.
It is not possible to "quickly" migrate a primary database over distance, but it is possible to make the amount of setup time irrelevant, and activation time near zero.
Instead of trying to do a copy, create an RDS cross-region replica of your data, and at the last moment, promote that replica to master.
Creating a Read Replica in a Different AWS Region
With Amazon RDS, you can create a MariaDB, MySQL, or PostgreSQL Read Replica in a different AWS Region than the source DB instance. You create a Read Replica to do the following:
Improve your disaster recovery capabilities.
Scale read operations into an AWS Region closer to your users.
Make it easier to migrate from a data center in one AWS Region to a data center in another AWS Region.
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html#USER_ReadRepl.XRgn
It doesn't matter how long it takes for RDS to copy the data and set up the replica, because as soon as it is copied, it starts replicating everything that changed on the master server since the process began.
Once you have verified that everything is correct and consistent, then you promote a replica. It is permanently and irrevocably detached from its original upstream instance, and becomes writable. This is the last thing you do and after the application starts writing to this new database, your original system in São Paulo is obsolete because changes to it will no longer replicate to the new system -- they're permanently isolated.
This arrangement does not require you to establish any networking or make the databases publicly accessible.
And, you can create and destroy multiple replicas to test this process, without disturbing production.
I am designing a data replication solution across timezones and have run into the issue where I can only run and old version of MySQL (5.6) in one location, whereas the other two have MariaDB 10.2.
Now, I have read the information about Replication Compatibility over at MariaDB. Clearly I can't use MariaDB as a master and MySQL as a slave.
Intermediate solution based on Bash scripts
Yet, I want to use my EU server as a master and that is running MariaDB. So I'm now contemplating a way around the limitation. So far I have come up with an intermediate data storage solution in the overseas server, where data is shuffled periodically using my own Bash data migration scripts over a low bandwidth link.
MariaDB is required in the primary location
I have to use MariaDB in my primary location because I'm using the ColumnStore database there. That is unconditional as part of the application design.
Does this situation ring a bell?
Do you have experience with similar situations and would you mind sharing some inspiration as for how you did it?
My best solution so far is with Bash scripts that are cronned, where MySQL data is dumped (mysqldump) and transferred over a low bandwidth link, then merged with the master (ColumnStore storage engine). I'm looking at a T+1 data lag between my primary location and the secondary location that is running MySQL.
Any high level design thoughts or shared experience is highly appreciated.
Best regards
We have an AWS Aurora database sitting on an instance that holds all of our production data. I want to be able to perform analytics on that data without doing it in our production environment, so I want to copy the production data on a daily basis to another AWS Aurora database on a completely different instance. Within that "analytics" database, I'll build out all the needed views and stored procedures to aggregate whatever transformed data I need to store.
At first I thought of creating an Aurora replica, but of course that's read-only. I need to find a way to do this outside of the production environment and I feel it's an easy enough task to do, but I just can't find out how to do it. Maybe I haven't been able to ask the write questions, so I came here. How can I achieve this?
This is simple AWS replication.
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Aurora.Replication.CrossRegion.html
Also if you prefer to use mysql or any other RDBMS use
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Aurora.Overview.Replication.MySQLReplication.html
It is similar to master slave replication with little difference in sharded data mainted in Aurora.
Replication is the correct (subjective, of course) solution, but you can't use a managed Aurora replica, which is to say you can't use an Aurora replica in the cluster.
That does not, however, mean you can't create your own asynchronous Aurora replica... which would be a second Aurora cluster, an independent master that is writable, but that uses the replication stream (the binary logs, also called "binlogs,") from the master cluster to keep its data in sync.
The one caveat: you must be extremely cautious not to write to any of the tables on the asynchronous cluster that are being replicated from the production master. Do that, of course, and replication breaks. The master cluster will be completely unaffected, but the replica cluster will stop replicating once inconsistent data is detected. But you can create additonal tables, views, and stored programs without issue.
Within an Aurora cluster, there is no need for replication in the traditional sense -- the replicas use the same backing store as the master (the "cluster volume.") Here, we're just replicating from cluster to cluster, identical to the way two ordinary MySQL servers would replicate (in one direction, only, of course).
The setup is essentially identical to the setup for replicating in and out of Aurora, to or from MySQL. Since this solution uses MySQL native replication, the steps are the same.
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Aurora.Overview.Replication.MySQLReplication.html
I've AWS MySQL RDS instance located at Singapore, and I'm planning to migrate it to AWS Aurora (Mumbai). This process roughly takes about 30-40 minutes. I don't want to take any downtime while migration process. My App server created on node.js and also hosted on EC2 at Singapore. How Do I do HA (High Availability) of my database? What should I need to do? Should I make any changes in my server logic on node.js? or make any replication between 2 databases (MySql & Aurora)? or I need to create load balancer to achieve his?
In sort While migration process, I don't want any downtime and my database serves as usual to my users/client.
I have done both migrations Singapore to Mumbai and MySQL to Aurora. I will recommend to take one step at a time.. Looks like your website is important as you are so particular about zero downtime.. So, take measured risks.
We never know what fails during these big engineering release. Worst part is that MySQL to Aurora is a "No coming back" release as there is no migration from "Aurora to MySQL".
I will recommend that for Aurora to Mysql go through serious testing; because I did faced few issues like opt file missing, tmp database not supported in Aurora.
For Singapore to Mumbai; make sure your application uses an internal dns name like abc.internal which is CNAME to actual endpoint. Best way with minimal downtime is to create replica in Mumbai --> make master as readOnly --> promote replica to master --> now change abc.internal to new endpoint.
Aurora to Mysql there will be downtime depending on your db size. Please remember that some downtime is ok; but you cannot afford to loose any data.
I've been playing with AWS EC2 and really like it. There is one drawback though, the instance could disappear due to hardware failure or whatever reason. This happened to me in my first week of operation. I was wondering whether there are good solutions to backup a MySQL database so that I don't lose my customer credentials?
You can transfer mysql database directly from EC2 machine to S3bucket but you will consume more cost for bandwidth and storage. You go for a third party application (which is safe) to backup your mysql or any plugins. Because they compress your data & encrypt and then save in S3 storage. Also, you can enable snap shot and take snap shots for volumes (hard drives)
I suggest you to use 'StoreGrid' backup software to backup your mysql database in EC2 machine. check this following link to know more about Online Backup Service on Amazon EC2/S3 http://storegrid.vembu.com/online-backup/amazon-ec2-s3-cloud-online-backup.php
Check this following link to configure MySQL database BACKUP http://storegrid.vembu.com/online-backup/mysql-backup.php?ct=1
Note: You have mentioned Hardware failure occurs often ! --- you can backup entire hard drives too using the above software.
I hope, now your MySQL data base is backed up from EC2 instance and stored in S3 storage safely.
Cheers !
Amazon now offers Relational Database Storage, that is, pre-configured EC2 instances, without any OS access to host MySQL (or Oracle, or T-SQL for real) for you, but aim to solve much of the availability, reliability and durability issues one faces when trying to host transactional data store yourself on a bare EC2 instance.
http://aws.amazon.com/rds/
"automated backups, DB snapshots, automatic host replacement, and Multi-AZ deployments"