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add envvars details (#337)

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Edouard Hur 2020-02-26 12:23:06 +01:00 committed by GitHub
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@ -115,6 +115,13 @@ Ports may be altered by setting `-httpListenAddr` on the corresponding nodes.
It is recommended setting up [monitoring](#monitoring) for the cluster.
#### Environment variables
Each flag values can be set thru environment variables by following these rules:
- The `-envflag.enable` flag must be set
- Each `.` in flag names must be substituted by `_` (for example `-insert.maxQueueDuration <duration>` will translate to `insert_maxQueueDuration=<duration>`)
- For repeating flags, an alternative syntax can be used by joining the different values into one using `,` as separator (for example `-storageNode <nodeA> -storageNode <nodeB>` will translate to `storageNode=<nodeA>,<nodeB>`)
### Monitoring