Clara provides the following commands:

• repo creates, updates and synchronizes local Debian repositories
• nodes manages and get the status from the nodes of a cluster
• slurm performs tasks using SLURM's controller
• images creates and updates the images of installation of a cluster
• p2p makes torrent images and seeds them via BitTorrent

• clara repo key

Install the secret GPG key to use in the repository.

• clara repo init [--dist=<name>]

Create the initial configuration for reprepro for our local repository and makes the first export.

• clara repo sync [create] [--dist=<name>]

Synchronize all the local Debian repositories with the canonical repositories. If it's the first time we're syncing, we need to add the option [create] to also create the repository locally.

• clara repo add <file>... [--dist=<name>]

Add packages to the local repository. can be one or more *.deb binaries, *.changes files or *.dsc files.

• clara repo del <name>... [--dist=<name>]

Remove package to the local repository. is the package to remove, if the package is a source name, it'll remove all the associated binaries.

• clara nodes connect <hostlist>

Connect to IMM serial console, including video, keyboard and mouse control

• clara nodes (on|off|reboot) <hostlist>

Power off | on | reboot the target node using the IMM device

• clara nodes status <hostlist>

Get target node power status using the IMM device

• clara nodes setpwd <hostlist>

Set up IMM user id/password on a new device

• clara nodes getmac <hostlist>

Get node mac addresses using the IMM device

• clara nodes pxe <hostlist>

Use IMM to perform a network boot on the next reboot

• clara nodes disk <hostlist>

Use IMM to perform a disk boot on the next reboot

• clara nodes ping <hostlist>

Use fping to check status of the machines

• clara nodes blink <hostlist>

Make chassis blink to help on-site admins to identify the machine

• clara nodes immdhcp <hostlist>

Set selected ipmi interfaces to grab an IP via DHCP

• clara nodes bios <hostlist>

Make selected machines go directly into BIOS on next reboot

• clara slurm health <nodeset>

Show nodes' health.

• clara slurm resume <nodeset>

Resume the nodes.

• clara slurm drain [<nodeset>] [<reason>...]

Shows drained nodes and reason why they have been drained, when used without arguments. When it is given a nodeset, it drains the specified nodes.

• clara slurm down [<nodeset>]

Shows nodes down when used without arguments. When it is given a nodeset, it puts down the specified nodes.

• clara slurm <cmd> <subject> [<op>] [<spec>...]

Simplified interface for scontrol.

The option [--dist=] allows to select a distribution different to the default one. This distribution must be listed in the field "distributions" from the section [common]

• clara images genimg [--dist=<name>]

Create a new squashfs image to use as operating system on the cluster nodes, it will also create a new torrent file and start seeding it.

• clara images (unpack|repack <directory>) [--dist=<name>]

Unpack and repack the squashfs file providing the image.

• clara images editimg [<image>] [--dist=<name>]

Unpacks the image for editing, spawns a bash to make the changes and repacks the image again after.

• clara images apply_config2img [--dist=<name>]

Apply a new configuration to the current image (packages and files), it will also renew the torrent file and start seeding it.

• clara images initrd [--dist=<name>]

Create a new initrd image to boot the cluster nodes.

• clara p2p status

Check the status of the BitTorrent trackers and seeders

• clara p2p restart

Restart the BitTorrent trackers and seeders

• clara p2p mktorrent [--image=<path>]

Create a new torrent file for the squashfs image and restart trackers and initial seeders.

EDF S.A. 2014 - http://www.edf.fr/