Use distinct Redis database numbers (helpful when "main" and "cache" are the same server)

[jnm]

Sometimes we recommend that people make redis-main.… and redis-cache.${PRIVATE_DOMAIN_NAME} point to the same server, e.g. for staging environments. For those cases, since the database numbers are hard-coded, we should avoid using the same number (2) for both REDIS_SESSION_URL and KOBOCAT_BROKER_URL.

kobo-install/templates/kobo-env/envfiles/databases.txt.tpl

Line 57 in 70bd3fa

REDIS_SESSION_URL=redis://{% if REDIS_PASSWORD %}:${REDIS_PASSWORD}@{% endif REDIS_PASSWORD %}redis-cache.${PRIVATE_DOMAIN_NAME}:${REDIS_CACHE_PORT}/2

kobo-install/templates/kobo-env/envfiles/kobocat.txt.tpl

Line 8 in 70bd3fa

KOBOCAT_BROKER_URL=redis://{% if REDIS_PASSWORD %}:${REDIS_PASSWORD}@{% endif REDIS_PASSWORD %}redis-main.${PRIVATE_DOMAIN_NAME}:${REDIS_MAIN_PORT}/2

I didn't see any other overlapping database numbers, but I also didn't search exhaustively. Enketo uses database number 0 and cannot be configured.