snode_link

Purpose:

Retrieve variables from remote nodes and update local CyFlex variables based on a specification file.

Enter:

snode_link <filename> [name=task_name] [host=hostname] [direction=push|pull] &

Where:

filename	Specify the pathname of the specification file that contains a list of local and remote CyFlex variables.
name	Optional. Specify the name to register this task with the operating system. The default value is “snode_link”.
host	Optional. Specify the IP address or hostname of the remote computer used for specifications involving CMD_LINE.
direction	Optional. Specify ‘push’ or ‘pull’ to indicate the direction of data transfer. The default is to ‘pull’ data from the remote node.

Example:

snode_link /specs/node_link_specs.123 &
The above starts ‘snode_link’ on the local node accessing the CyFlex variables specified in the file node_link_specs.123. The task name of “snode_link” is registered with the operating system.

snode_link node_link.settings direction=push host=xyznode27 &
The above starts ‘snode_link’ on the local node and move data to xyznode27. The local computer must be able to resolve the host name into an IP address.

Notes:

A maximum of 1200 variables may be specified in each file, transferred in blocks of up to 6 variables per block and up to 200 blocks. It is required that all nodes have the connection server (connsrvr) running and that remote nodes run sm_server. This program is typically spawned via the go script, and multiple instances can be used for different nodes.

This program is normally spawned via the go script. Multiple copies may be spawned if links to different nodes using separate specification files are desired.

The following is an example specification file linking to more than one node.

Standard CyFlex intervals may be used beginning with CyFlex version 6.3.

         # keyword host name transfer_interval
         @HOSTNAME CMD_LINE SLO
^–this is replaced by the host= option value

         # fetched_variable(remote node)  target variable (this node)
cell_2_token my_token

The following is an example specification file linking to a node via it’s
ip address or hostname.

# keyword host name transfer_interval
         @HOSTNAME 123.45.67.89 60[sec]

         # fetched_variable(remote node)  target variable (this node)
         barometer                               barometer
         vp_central vap_pa

NOTE: Beginning with CyFlex version 6.3 the transfer interval can be given as a time value with units, an event name, or one of the standard CyFlex execution rates such as FAS, MED, SLO, etc.

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