February 2017
Intermediate to advanced
536 pages
28h 47m
English
Content preview from PostgreSQL High Availability Cookbook - Second Edition
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Managing WAL files with OmniPITR
We've stated on several occasions that WAL files are very important. Their role in PostgreSQL crash recovery, backup restoration, and replication gives them a central role in maintaining a high availability cluster. With OmniPITR, we can upgrade communication between servers to ensure that we have logging for every step of a WAL file's movement. This is no small benefit, and we can use it to audit the entire transmission path if we encounter a problem.
Though OmniPITR is a full suite of backup-related tools, we wish to focus on its ability to give us better control of WAL archival and recovery. As a consequence, this recipe will describe usage of the omnipitr-archive command.
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