GitHub - giovtorres/docker-centos7-slurm: Slurm Docker Container on CentOS 7 (original) (raw)

Slurm on CentOS 7 Docker Image

Docker Pulls

This is an all-in-one Slurm installation. This container runs the following processes:

It also has the following Python versions installed usingpyenv:

Usage

There are multipletagsavailable. To use the latest available image, run:

docker pull giovtorres/docker-centos7-slurm:latest docker run -it -h slurmctl --cap-add sys_admin giovtorres/docker-centos7-slurm:latest

The above command will drop you into a bash shell inside the container. Tini is responsible for init and supervisord is the process control system . To view the status of all the processes, run:

[root@slurmctl /]# supervisorctl status munged RUNNING pid 23, uptime 0:02:35 mysqld RUNNING pid 24, uptime 0:02:35 slurmctld RUNNING pid 25, uptime 0:02:35 slurmd RUNNING pid 22, uptime 0:02:35 slurmdbd RUNNING pid 26, uptime 0:02:35 slurmrestd RUNNING pid 456, uptime 0:02:00

In slurm.conf, the ControlMachine hostname is set to slurmctl. Since this is an all-in-one installation, the hostname must match ControlMachine. Therefore, you must pass the -h slurmctl to docker at run time so that the hostnames match.

You can run the usual Slurm commands:

[root@slurmctl /]# sinfo PARTITION AVAIL TIMELIMIT NODES STATE NODELIST normal* up 5-00:00:00 5 idle c[1-5] debug up 5-00:00:00 5 idle c[6-10]

[root@slurmctl /]# scontrol show partition normal PartitionName=normal AllowGroups=ALL AllowAccounts=ALL AllowQos=ALL AllocNodes=ALL Default=YES QoS=N/A DefaultTime=5-00:00:00 DisableRootJobs=NO ExclusiveUser=NO GraceTime=0 Hidden=NO MaxNodes=1 MaxTime=5-00:00:00 MinNodes=1 LLN=NO MaxCPUsPerNode=UNLIMITED Nodes=c[1-5] PriorityJobFactor=50 PriorityTier=50 RootOnly=NO ReqResv=NO OverSubscribe=NO PreemptMode=OFF State=UP TotalCPUs=5 TotalNodes=5 SelectTypeParameters=NONE DefMemPerCPU=500 MaxMemPerNode=UNLIMITED

Building

Using Existing Tags

There are multiple versions of Slurm available, each with its own tag. To build a specific version of Slurm, checkout the tag that matches that version and build the Dockerfile:

git clone https://github.com/giovtorres/docker-centos7-slurm git checkout docker build -t docker-centos7-slurm .

Using Build Args

You can use docker's --build-arg option to customize the version of Slurm and the version(s) of Python at build time.

To specify the version of Slurm, assign a valid Slurm tag to the SLURM_TAGbuild argument:

docker build --build-arg SLURM_TAG="slurm-19-05-1-2" -t docker-centos7-slurm:19.05.1-2

To specify the version(s) of Python to include in the container, specify a space-delimited string of Python versions using the PYTHON_VERSIONS build argument:

docker build --build-arg PYTHON_VERSIONS="3.6 3.7" -t docker-centos7-slurm:py3

Using docker-compose

The included docker-compose file will run the cluster container in the background. The docker-compose file uses data volumes to store the slurm state between container runs. To start the cluster container, run:

To execute commands in the container, use docker exec:

docker exec dockercentos7slurm_slurm_1 sinfo PARTITION AVAIL TIMELIMIT NODES STATE NODELIST normal* up 5-00:00:00 5 idle c[1-5] debug up 5-00:00:00 5 idle c[6-10]

docker exec dockercentos7slurm_slurm_1 sbatch --wrap="sleep 10" Submitted batch job 27

docker exec dockercentos7slurm_slurm_1 squeue JOBID PARTITION NAME USER ST TIME NODES NODELIST(REASON) 27 normal wrap root R 0:07 1 c1

To attach to the bash shell inside the running container, run:

docker attach dockercentos7slurm_slurm_1

Press Ctrl-p,Ctrl-q to detach from the container without killing the bash process and stopping the container.

To stop the cluster container, run:

Testing Locally

Testinfra is used to build and run a Docker container test fixture. Run the tests withpytest: