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Blockscout uses ENVs for setting hundreds of different parameters. Please see the various sections for ENV names, descriptions, default values and versioning.
You will find deprecated ENV vars on the Deprecated ENV Variables page.

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Set ENV Variables with CLI

Use the export command to set variables. For example: 
$ export ETHEREUM_JSONRPC_VARIANT=nethermind
$ export COIN=POA
$ export NETWORK=POA

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Required ENV variables

Please see the Backend ENVs page for details. Required variables are located in the General Management section and marked with a ✅

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Example ENV Variables Set

The following variables are set for the Gnosis Chain Blockscout Instance. Note that some variables are not included as they contain private information which should not be exposed.

Gnosis-Chain-Variables.txt

6KB

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Time format

Can be set in format 1h for 1 hour, 1m for 1 minute, 1s or 1 for 1 second, 1ms for 1 millisecond. If no unit is provided, the value will be interpreted as seconds.
Note: Before release 5.1.2, all environment variables of time format supported only integers in seconds (without dimensions) as values.