If you want to debug the issue, I would suggest using the ss and lsof tools in the memcache container.
Although it says too many open files, I would guess it might actually mean sockets:
Too many open connections accept4(): Too many open files
If you want to debug the issue, I would suggest using the ss and lsof tools in the memcache container.
Although it says too many open files, I would guess it might actually mean sockets:
Too many open connections
accept4(): Too many open files