ERROR: could not resize shared memory segment not handled

[rhyslbw]

Scenario: Running a docker stack with the following services, where the memory allocation for the PostgreSQL container was 64MB (the default)

• cardano-node
• cardano-byron-proxy
• cardano-explorer
• postgres

Deep into the sync, at least 40 but I also saw another attempt make it to 80 epochs in, postgres is looking for more memory:

ERROR:  could not resize shared memory segment "/PostgreSQL.1197429420" to 12615680 bytes: No space left on device

1. ~~64MB is pretty slim, but worth looking for possible leak since it occurs after running for some hours.~~ Edit: This is in the scope of the postgres container, so a leak would be out of our scope here.
2. The error is not handled by the node client, and seems to just endlessly wait. The logs show no error, just the latest write operation info