Cloudy Cluster¶

A YAML cluster configuration file for a Cloudy Cluster resource manager on an HPC cluster looks like:

# /etc/ood/config/clusters.d/my_cluster.yml
---
v2:
  metadata:
    title: "My Cluster"
  login:
    host: "my_cluster.my_center.edu"
  job:
    adapter: "ccq"
    image: "my-default-image"
    cloud: "gcp"
    scheduler: "my_scheduler"
    bin: "/path/to/other/CCQ"
    jobid_regex: "different job_id regex: (?<job_id>\\d+) "
    # bin_overrides:
      # ccqstat: "/usr/local/bin/ccqstat"
      # ccqdel: ""
      # ccqsub: ""

with the following configuration options:

adapter

This is set to ccq.

image

The default cloud image to use when launching jobs. There is no default.

cloud

The cloud provider being used. Valid options are gcp or aws. Defaults to gcp.

scheduler

The name of the scheduler being used. There is no default.

bin

The path to the CCQ client installation binaries. Defaults to /opt/CloudyCluster/srv/CCQ.

jobid_regex

The regular expression to extract the job id from the ccqstat output. Defaults to job id is: (?<job_id>\\d+) you. You should only need this if the ccqstat output changes format. If you are required to reconfigure, you’ll need to extract the named group job_id as the default does.

bin_overrides

Replacements/wrappers for CCQ’s job submission and control clients. Optional

Supports the following clients:

ccqstat
ccqdel
ccqsub

Common Issues¶

Prompted for input¶

You may see this error when you initially try to start a job.

The /opt/CloudyCluster/srv/CCQ/ccqsub command was prompted. You need
to generate the certificate manually in a shell by running 'ccqstat'
and entering your username/password

This is because CCQ libraries require a certificate to be generated to communicate with the backend servers. To remediate you’ll simply have to login through a shell terminal and generate a certificate. Do this by running the ccqstat command and entering your username and password when prompted. If you’re successful, the command will generate a ccqCert.cert in your home directory that subsequent invocations will use.

Note these certificates expire, so you may have to generate them every so often or specify a very distant expiry date when you do generate them.