how to add a new slurmd c3?

[yulingao]

i have tried a lot of times, but i still have a 2 nodes slurm cluster

[pablohe]

Hi, I did it,

Added in composer.xml:

  c3:
    image: slurm-docker-cluster:19.05.1
    command: ["slurmd"]
    hostname: c3
    container_name: c3
    volumes:
      - etc_munge:/etc/munge
      - etc_slurm:/etc/slurm
      - slurm_jobdir:/data
      - var_log_slurm:/var/log/slurm
    expose:
      - "6818"
    depends_on:
      - "slurmctld"

replace in slurm.conf

NodeName=c[1-2] RealMemory=1000 State=UNKNOWN 

by

NodeName=c[1-3] RealMemory=1000 State=UNKNOWN 

and

PartitionName=normal Default=yes Nodes=c[1-2] Priority=50 DefMemPerCPU=500 Shared=NO MaxNodes=1 MaxTime=5-00:00:00 DefaultTime=5-00:00:00 State=UP

by

PartitionName=normal Default=yes Nodes=c[1-3] Priority=50 DefMemPerCPU=500 Shared=NO MaxNodes=1 MaxTime=5-00:00:00 DefaultTime=5-00:00:00 State=UP

apply the changes

docker-compose stop docker build -t slurm-docker-cluster:19.05.1 .

[nikosT]

If you rebuild it, it will change nothing, since no change in Dockerfile was made. Thus, you need to slightly modify the Dockerfile (by adding e.g. RUN echo 'test') just before the COPY of slurm.conf.

[giovtorres]

You may be to run docker-compose build or if there is caching, you can add the --no-cache to that command.

[nikosT]

You may be to run docker-compose build or if there is caching, you can add the --no-cache to that command.

This is not working since the build is happening through docker and not docker-compose. This could work if in docker-compose yml file build instruction is set instead of image.

[giovtorres]

I believe there was a fork of this project that very neatly was able to dynamically add multiple nodes. If i come across it again, i'll post it here. If folks find it useful, perhaps it could get contributed here as well.