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MDATA-GET(1) Metadata Commands MDATA-GET(1) NAME mdata-get -- Fetch the value of a metadata key-value pair. SYNOPSIS /usr/sbin/mdata-get keyname DESCRIPTION The mdata-get command allows the user (or a script) to query the metadata for a guest instance running in a SmartDataCenter (SDC) cloud. Metadata values are generally set programmatically via CloudAPI, or during interac- tive provisioning via a Web Portal. They may also be set from within the instance with the mdata-put command. The value of the requested keyname will be printed to stdout. If the meta- data 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 diag- nostic output may be printed to stderr. EXIT STATUS The following exit values are returned: 0 Successful completion. The requested keyname was available, and its value was emitted to std- out. 1 Metadata value not found. The requested keyname was not found in the metadata. 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 in- structions to ensure valid arguments are supplied. SEE ALSO mdata-delete(1), mdata-list(1), mdata-put(1) Joyent SmartDataCenter October 2013 MDATA-GET(1)
NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | SEE ALSO
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