Slurm Configuration

Generated files

sind generates a multi-file Slurm configuration and writes it to the sind-<cluster>-config volume:

/etc/slurm/
├── slurm.conf           # main config, includes sind-nodes.conf
├── sind-nodes.conf      # sind-managed node definitions
└── cgroup.conf          # cgroupv2 configuration

slurm.conf

The main configuration file includes cluster name, controller host, and process tracking settings. It contains an include directive:

include /etc/slurm/sind-nodes.conf

sind does not modify slurm.conf after initial creation.

sind-nodes.conf

This file contains node and partition definitions for sind-managed nodes. sind owns this file exclusively:

sind create cluster generates initial node definitions
sind create worker appends new managed nodes
sind delete worker removes managed nodes

Nodes with managed: false are excluded from this file.

Do not edit sind-nodes.conf directly. To add custom node definitions, create a separate file and add an include directive to slurm.conf.

cgroup.conf

sind generates a cgroup.conf for cgroupv2 support, enabling resource isolation and accounting for Slurm jobs.

Version discovery

sind discovers the Slurm version before creating any cluster resources by running an ephemeral container:

docker run --rm <image> scontrol --version
# Output: "slurm 25.11.4"

This happens once per unique image. The version is stored as a label on cluster resources (sind.slurm.version) and used for:

Generating version-appropriate configuration
Displaying version information in CLI output

Mixed versions

When different images report different Slurm versions, sind logs a warning but continues. The controller image’s version is used for configuration generation.

User customization

sind provides a working starter configuration. For additional customization, users can:

Edit slurm.conf on the controller (the config volume is writable)
Add include files for custom configuration
Replace the entire configuration (but sind create worker will fail for managed nodes without sind-nodes.conf)