I have mysql database in my web project. I need to create a replica of my mysql database for backup.
My web interface interacts directly with one database, i need that other backup database to get automatically updated whenever there are some changes in main or master database.
How can I automate this process of backup database ?
You will have to run a cron periodically to check for changes. If there is a change, then you can get a backup of your database.
For example:
You can run a cron every 5 minutes(depending on how often you need a backup) and check if the latest record was added in the last 5 minutes. If yes, run the mysqldump command to get the backup.
Typically you create master/slave setup. Periodically you take the slave down and make a copy of the database using rsync. Alternatively, you can leave the slave up and do a mysqldump, but that takes a lot longer to restore.
Related
I'm unable to view the first backup created by Azure for Azure Database for MySQL, a fully managed service by Azure.
Here is the sequence of steps
I'm a subscription owner in Azure and I spin an Azure Database for MySQL Server.
I delete the server after 5 hours of creation.
I try and create a new server with the same name but this time instead of a blank source. I select backup.
Observation at this time: I am unable to find a backup.
Questions:
How long will it take for Azure to create the first automatic backup?
If it's within 5 hours of creation for sure then why as a subscription owner I cannot view the backup.
Are there some settings to be checked at the time of the creation of the Azure Database for MySQL Server?
Any help will be greatly appreciated.
AzureFan
How long will it take for Azure to create the first automatic backup?
The first full backup is scheduled immediately after a server is created. The initial backup can take longer on a large restored server. The earliest point in time that a new server can be restored to is the time at which the initial full backup is complete.
If it's within 5 hours of creation for sure then why as a subscription owner I cannot view the backup.
In short, the deleted server is not supported to be restored, so you could not see the backup. If you delete the server, all databases that belong to the server are also deleted and cannot be recovered.
See: https://learn.microsoft.com/en-us/azure/mysql/concepts-backup#restore
Are there some settings to be checked at the time of the creation of the Azure Database for MySQL Server?
For the details of creating the Azure Database for MySQL Server, see : https://learn.microsoft.com/en-us/azure/mysql/howto-restore-server-portal
I have a Mysql server which is running on linux box (Azure cloud). It has huge datas and many schemas, i want to take backup of each database separately. I had a shell scripts which basically runs mysqldump to take backup of each database and zip it. But the problem is it takes too much of time and also it locks the running system, I basically don't want to stop my system for backing up as i take backup every two days. Can you please suggest the best way to achieve my backup very fast and without interrupting the running system. By the way my Mysql server is not a Enterprise edition.
I have two databases. One is on local server and the other is on a production server. I'm continuously working on the local server and after approval I want to update production server. Wih the current setup, I need to take dump or copy or export of database and then import into production database, every time. Is there any way of synchronization method in phpmyadmin for database on different server.
It is possible to synchronize a model in MySQL Workbench with a live database?
Other then this, how can I do this? I'm able to use queries, the command line and phpmyadmin itself.
Please specified any simple method.
The "synchronisation" feature you are looking for is called replication. A replication can be set up between a master and a slave machine. It does not rely on a constant connection, but stores all changes on the master and replays all those changes on the slave once a connection is established.
not sure its a stack overflow question
I have a Mac and am hosting a Apache MySQL server on it using MAMP Pro. If I back up my data on the time machine, is MySQL database also backed up or do I have to create mysqldump and backup up as a cron job? In case of a crash do I do a normal restore in case it can be backed up on time machine.
Thanks
Make a regular dump with MySQL dump or use another specific database back-up tool. A copy of the data folder is not ok.
MySQL dump will really read the data and can be checked. It is not always true that all data is written completely to the data file and lockings give issues.
If you have a specific time of back-up just run a cron before that moment and verify whether it is safe and finished. MySQL will take care of lockings, changes, transactions etc.
Always, read always, verify your back-up with a restore test.
If a snapshot of the database is taken, can it be copied over to another drive and re-created?
I'm not sure what you mean by "copied over to another drive", but a very good tool to create a snapshot of a running database is mysqlhotcopy.
mysqlhotcopy is a Perl script that was originally written and contributed by Tim Bunce. It uses FLUSH TABLES, LOCK TABLES, and cp or scp to make a database backup. It is a fast way to make a backup of the database or single tables, but it can be run only on the same machine where the database directories are located.