3.3.1.3 Prepare the Slave Server

Ubuntu 22.04 perfect server: https://www.howtoforge.com/ispconfig-autoinstall-debian-ubuntu/
Latest Multiserver install guides (work for current Debian 11 and Ubuntu 22.04 version too): https://www.howtoforge.com/tutorial/ispconfig-multiserver-setup-debian-ubuntu/

 

There is no tutorial about syncing existing databases, this is more a maintenance topic and not about ISPConfig installation so not related to perfect server guides that you mentioned in your first post. To sync mysql databases between servers, you must dump them using e.g. mysqldump command and then import them on the new server using mysql command, that's not a task ISPConfig can do for you as iSPConfig is a Hosting Control panel, so it manages config files for your systems, it is not a database content replication (as that#s built into the database engine from MySQL/MariaDB) and not done by external software.

 

Which makes no sense as long as you don't plan to stop using ISPConfig.

No, the auto-installer does exactly the same that the perfect server does, and you can tell the auto-installer in detail which services it shall install and configure. You asked for the perfect server guide for Ubuntu 22.04, and that's the auto-installer, the difference between the old perfect server guides and the auto-installer is that is saves you time as it runs the exact commands from the perfect server guide for you so you don't have to copy them one after another manually, the result is exactly the same. I recommend you should really read the guides in the links I posted above.

Makes no sense at all, but yes, if you want to have a bunch of packages thrown to your system without getting a properly configured working end result, then you can do that by interrupting the auto installer when it starts installing ISPConfig.

 

And that's where you are wrong. You must install ISPConfg first. otherwise, you have a nonfunctional system, no matter, if you copy the ISPConfig database later or not plus, the system, would not be connected to your master if you do not install it as a slave system, and also the system would get a wrong server_id which would make it impossible to work with your master.

It makes no sense and will not work anyway. See post #4, you copy over databases using mysqldump and mysql command, this is not related to ISPConfig installation at all.

maybe you should consider contacting @Th0m from ISPConfig business support here https://www.ispconfig.org/get-support/?type=ispconfig and ask him for a quote to set this up for you.

 

If you want to replace a database on a server, you must overwrite it. You can not replace something without changing the thing that shall be replaced. And before replacing something its always wise to take backups in case you are not satisfied with what you did, then you can restore the backup and do it again. And if you mean that the second server shall get a different database name like dbispconfig2 while you want to have dbispconfig copied from the first server, then you choose that database name at install time by using expert mode. You should look at the links I posted on how to set up ISPConfig systems. They show the command line options of the installer and also how to set up multiserver systems.

 

You still don't seem to understand what this is all about with the databases. I'm sorry, but I don't think you will be able to do this successfully. This is an advanced topic that requires an experienced admin to extend an existing system with a mirror, you need a good understanding of MySQL, its mirroring capabilities and how to manage and resync it, and the way how ISPConfig works and uses its databases to do this.