MDATA-PUT(__SECT__)

NAME
mdata-put -- Set the value of a metadata key-value pair.

SYNOPSIS
/usr/sbin/mdata-put keyname [ value ]

DESCRIPTION

The mdata-put command allows the user (or a script) to modify the metadata for a guest instance running in a SmartDataCenter (SDC) cloud. Metadata values are generally set programmatically via CloudAPI, or during interactive provisioning via a Web Portal. The value of a key-value pair may be obtained by passing its name to the mdata-get command.

The key-value pair named keyname will be updated in the metadata store for this instance. If a value argument is provided on the command-line, then that value will be used. Otherwise, if stdin is not a tty, the value will be read from stdin.

If the metadata service is unavailable at the time of the request, this command will block waiting for it to become available. Non-transient failures, such as the non-existence of the requested keyname, will cause the program to exit with a non-zero status. Depending on the nature of the error, some diagnostic output may be printed to stderr.

EXIT STATUS

The following exit values are returned:

0
    Successful completion.

    The requested keyname was valid, and its value was updated.

2
    An error occurred.

    An unexpected error condition occurred, which is believed to be a non-transient condition. Retrying the request is not expected to resolve the error condition; either a software bug or misconfiguration exists.

3
    A usage error occurred.

    Malformed arguments were passed to the program. Check the usage instructions to ensure valid arguments are supplied.

SEE ALSO

mdata-delete(__SECT__), mdata-get(__SECT__), mdata-list(__SECT__)