March 2019
Intermediate to advanced
394 pages
11h 4m
English
Content preview from Mastering MongoDB 4.x - Second Edition
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Backups with filesystem snapshots
The most common backup method in the past, and one that is still widely used, relies on the underlying filesystem point-in-time snapshots functionality to back up our data.
EBS on EC2, and Logical Volume Manager (LVM) on Linux, support point-in-time snapshots.
If we use WiredTiger with the latest version of MongoDB, we can have volume-level backups, even if our data and journal files reside in different volumes.
We can make a backup of a replica set as follows:
- To make a backup of a replica set, we need to have a consistent state for our database. This implies that we have all of our writes either committed to the disk or in our journal files.
- If we use WiredTiger storage, our snapshot will be consistent ...
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