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Why does my MariaDB server keep crashing out of memory?
If you have a tiny antique, or a tiny VM, then those percentages are too high. Now for the gory details. If the MariaDB server is crashing because of ‘out-of-memory’ then it is probably wrongly configured. There are two kind of buffers in MariaDB:
When to use failover and high availability in MariaDB?
When no failover/high availability parameter is set, the failover support is basic. Before executing a query, if the connection with the host is discarded, the connection will be reinitialized if parameter “autoReconnect” is set to true.
What should the socket timeout be in MariaDB?
The standard option “connectTimeout” defines the socket connection timeout. By default, this option is set to 0 (no timeout). Since there are many servers, setting this option to a small amount of time make sense. During the connection loop phase, the driver will try to connect to the server sequentially until the creation of an active connection.
What are the different replication roles in MariaDB?
Load balancing allows load (read and write) to be distributed over multiple servers. In MariaDB (and MySQL) replication, there are 2 different replication roles: This document describes configuration and implementation for 3 types of clusters: Multi-Master replication cluster.
Where is the temporary blob stored in MariaDB?
This will be freed at end of query. Note that temporary blob storage is not included in the memory information in information_schema.processlist but only in the total memory used ( show global status like “memory_used” ). Used to store temporary tables in memory.
How long does it take to see table values in MariaDB?
Run this to see the values for your system. (If you have a lot of tables, it can take minute (s).)
How to calculate memory allocation in MariaDB knowledge base?
Data block caching (from .MYD file) is left to the OS, so be sure to leave a bunch of free space for this. Caveat: Some flavors of OS always claim to be using over 90%, even when there is really lots of free space. then calculate Key_read_requests / Key_reads.