Red Hat SummitChapter 4. Auto-scaling placement groups
The number of placement groups (PGs) in a pool plays a significant role in how a cluster peers, distributes data, and rebalances.
Auto-scaling the number of PGs can make managing the cluster easier. The pg-autoscaling command provides recommendations for scaling PGs, or automatically scales PGs based on how the cluster is being used.
- To learn more about how auto-scaling works, see Chapter 5, Placement group auto-scaling.
- To enable, or disable auto-scaling, see Chapter 7, Setting placement group auto-scaling modes.
- To view placement group scaling recommendations, see Chapter 8, Viewing placement group scaling recommendations.
- To set placement group auto-scaling, see Chapter 9, Setting placement group auto-scaling.
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To update the autoscaler globally, see Chapter 10, Updating
noautoscaleflag - To set target pool size see, Section 10.1, “Specifying target pool size”.
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