--conf=FILE|KEY=VAL|STRING|NAME

The --conf` option allows configuration for a Flux instance started via flux-batch(1) or flux-alloc(1) to be iteratively built on the command line. On first use, a conf.json entry is added to the internal jobspec file archive, and -c{{tmpdir}}/conf.json is added to the flux broker command line. Each subsequent use of the --conf option updates this configuration.

The argument to --conf may be in one of several forms:

• A multiline string, e.g. from a batch directive. In this case the string is parsed as JSON or TOML:

  # flux: --conf="""
  # flux: [resource]
  # flux: exclude = "0"
  # flux: """
  

• A string containing a = character, in which case the argument is parsed as KEY=VAL, where VAL is parsed as JSON, e.g.:

  --conf=resource.exclude=\"0\"
  

• A string ending in .json or .toml, in which case configuration is loaded from a JSON or TOML file.

• If none of the above conditions match, then the argument NAME is assumed to refer to a "named" config file NAME.toml or NAME.json within the following search path, in order of precedence:

  • XDG_CONFIG_HOME/flux/config or $HOME/.config/flux/config if XDG_CONFIG_HOME is not set

  • $XDG_CONFIG_DIRS/flux/config or /etc/xdg/flux/config if XDG_CONFIG_DIRS is not set. Note that XDG_CONFIG_DIRS may be a colon-separated path.

--bg

(alloc only) Do not interactively attach to the instance. Instead, print jobid on stdout once the instance is ready to accept jobs. The instance will run indefinitely until a time limit is reached, the job is canceled, or it is shutdown with flux shutdown JOBID (preferred). If a COMMAND is given then the job will run until COMMAND completes. Note that flux job attach JOBID cannot be used to interactively attach to the job (though it will print any errors or output).

-B, --broker-opts=OPT

Pass specified options to the Flux brokers of the new instance. This option may be specified multiple times.

--wrap

(batch only) The --wrap option wraps the specified COMMAND and ARGS in a shell script, by prefixing with #!/bin/sh. If no COMMAND is present, then a SCRIPT is read on stdin and wrapped in a /bin/sh script.

--dump=[FILE]

When the job script is complete, archive the Flux instance's KVS content to FILE, which should have a suffix known to libarchive(3), and may be a mustache template as described above for --output. The content may be unarchived directly or examined within a test instance started with the flux-start --recovery option. If FILE is unspecified, flux-{{jobid}}-dump.tgz is used.

--quiet

Suppress logging of jobids to stdout