How to pass environment variables to db_connection.conf (DBconnect version: 3.1.4)

[davidgogogo]

Hi, my Splunk DBconnect version is 3.1.4
I would like to pass the environment variable to the db_connections.conf
but it seems can't work

Passing environment variable is normal when I do the same way in other apps
is it the DBconnet app limitation?

The following is my format:

## splunk-launch.conf
...
SPLUNK_ENV_DB_CONN_ENABLE=1
SPLUNK_ENV_DB_CONN_HOST=localhost

## splunk_app_db_connect/local/db_connections.conf

[myConnection]
connection_type = postgres
database = mydatabase
disabled = $SPLUNK_ENV_DB_CONN_ENABLE
host = $SPLUNK_ENV_DB_CONN_HOST
identity = test
jdbcUseSSL = false
localTimezoneConversionEnabled = false
port = 5432
readonly = true

[masonmorales · Accepted solution]

Quoting another answer:

.conf files have a special support for consuming environment variables that depends on the variable expansion ability of the code that reads them. That is, some .conf files will honor an environment variable (such as deploymentclient.conf) while others won't (such as inputs.conf).

[masonmorales]

Did you restart Splunk after configuring the environment variables in splunk-launch.conf?