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Chapter 7. Troubleshoot etcd
To troubleshoot etcd and improve performance, configure the memory allowance for the service.
7.1. Configuring the memoryLimitMB value to set parameters for the etcd server
By default, etcd uses as much memory as necessary to handle the load on the system. In memory-constrained systems, you might need to limit the amount of memory etcd uses.
Procedure
Edit the
/etc/microshift/config.yamlfile to set thememoryLimitMBvalue.etcd: memoryLimitMB: 128
NoteThe minimum required value for
memoryLimitMBon MicroShift is 128 MB. Values close to the minimum value are more likely to impact etcd performance. The lower the limit, the longer etcd takes to respond to queries. If the limit is too low or the etcd usage is high, queries time out.
Verification
After modifying the
memoryLimitMBvalue in/etc/microshift/config.yaml, restart MicroShift by running the following command:$ sudo systemctl restart microshift
Verify the new
memoryLimitMBvalue is in use by running the following command:$ systemctl show --property=MemoryHigh microshift-etcd.scope
