Certain configuration directives in Fluent Bit refer to unit sizes such as when defining the size of a buffer or specific limits, we can find these in plugins like Tail Input, Forward Input or in generic properties like Mem_Buf_Limit.
Starting from Fluent Bit v0.11.10, all unit sizes have been standardized across the core and plugins, the following table describes the options that can be used and what they mean:
| Suffix | Description | Example |
|---|---|---|
| When a suffix is not specified, it's assumed that the value given is a bytes representation. | Specifying a value of 32000, means 32000 bytes | |
| k, K, KB, kb | Kilobyte: a unit of memory equal to 1,000 bytes. | 32k means 32000 bytes. |
| m, M, MB, mb | Megabyte: a unit of memory equal to 1,000,000 bytes | 1M means 1000000 bytes |
| g, G, GB, gb | Gigabyte: a unit of memory equal to 1,000,000,000 bytes | 1G means 1000000000 bytes |