February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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How it works...
We need to first find the most recent log file. The ls command's -t parameter will sort the data by the last modified time, which the head command limits to one line of results. Distributions that provide PostgreSQL may adhere to a log-rotation scheme instead. In these cases, the latest log file will reside in /var/log/postgresql and will always have the same name. Older logs will have a number appended until the retention period passes.
No matter how we locate the most recent log file, we use two relatively simple commands to examine its contents. These log files can be extremely useful, though we will focus on the checkpoint activity for now. Of those two commands, the first simply isolates all the checkpoint data in the ...
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