Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 5

Displaying posts with tag: mysqld_multi (reset)

Percona XtraDB Cluster: How to run a 2-node cluster on a single server
+0 Vote Up -0Vote Down

I reckon there’s little sense in running 2 or more Percona XtraDB Cluster (PXC) nodes in a single physical server other than for educational and testing purposes – but doing so is still useful in those cases. The most popular way of achieving this seems to be with server virtualization, such as making use of Vagrant boxes. But in the same way you can have multiple instances of MySQL running in parallel on the OS level in the form of concurrent mysqld processes, so too can you have multiple Percona XtraDB Cluster nodes. …

  [Read more...]
mysqld_multi: How to run multiple instances of MySQL
+0 Vote Up -0Vote Down

The need to have multiple instances of MySQL (the well-known mysqld process) running in the same server concurrently in a transparent way, instead of having them executed in separate containers/virtual machines, is not very common. Yet from time to time the Percona Support team receives a request from a customer to assist in the configuration of such an environment. MySQL provides a tool to facilitate the execution of multiple instances called …

  [Read more...]
mysqld_multi: How to run multiple instances of MySQL
+0 Vote Up -0Vote Down

The need to have multiple instances of MySQL (the well-known mysqld process) running in the same server concurrently in a transparent way, instead of having them executed in separate containers/virtual machines, is not very common. Yet from time to time the Percona Support team receives a request from a customer to assist in the configuration of such an environment. MySQL provides a tool to facilitate the execution of multiple instances called mysqld_multi:

…  [Read more...]
Fixing MySQL with a comment in the config file
+3 Vote Up -0Vote Down

A customer called with an emergency issue: A server that normally runs many MySQL instances wouldn’t start them up. Not only would it not start all of them, it wouldn’t even start the first one. The multiple instances were started through the mysql_multi init script. Perhaps you already know what was wrong!

It turns out that this server’s /etc/init.d/mysql_multi wouldn’t start unless it found the text “mysqld_multi” in the /etc/my.cnf file. Not a [mysqld_multi] config file section, but the text string “mysqld_multi”. It was using this text as a proxy for “I found a [mysqld_multi] configuration section.” This …

  [Read more...]
Perl is probably a fine scripting language, but on Windows...
+2 Vote Up -3Vote Down

Please do not assume Perl is always installed on all platforms. In particular not on Windows! Just as it is probably a bad idea to assume that Windows DOS commands work on Linux! Come on now!

Why am I making a fuzz you ask, do I have a problem with you writing stuff in Perl (personally, I don't even like Perl, but that's another issue)? Nope. But somewhat modern software really should not assume that you have Perl, or DOS, or some other arcane, not terribly standardized piece of software around for a server to do it's job. And MySQL still have a way to go to be reasonably good on Windows. Downloading the lastest RC, 5.5.7, …

  [Read more...]
Showing entries 1 to 5

Planet MySQL © 1995, 2014, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.