Absolute beginner, pardon my ignorance and misuse of jargon.
I need to containerize a Linux application that has odd memory requirements.
The actual requirements are for >32GB of RAM, but it will install on a system with exactly 4GB as well. (32GB for a typical installation, 4GB to install on one of our stand-alone devices. I didn’t write it, so i can’t change it.)
I started building the container with:
docker run -it --memory=“4g” ubuntu bash
on a VM with 12G RAM.
inside the container, ‘free’ reports
total used free shared buff/cache available
Mem: 12268752 8674828 761456 69000 2832468 3212712
Swap: 50331644 49964 50281680
and on the host ‘docker stats’ reports:
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
b858832d7940 happy_tesla 0.01% 143.3MiB / 4GiB 3.50% 55.6MB / 483kB 66.7MB / 96MB 3
so it is limited to 4G, but he installer apparently sees the full 12G of the VM.
what can i do so that the container OS only sees 4G?