Run  ltfsee stop,  to stop IBM Spectrum Archive EE and LE+ and check that the processes  have stopped by running the  pidof mmm  command on the control node and the  pidof ltfs  command on each node. After IBM Spectrum Archive EE has stopped, run  ltfsee_config -m  SET_CTRL_NODE  to modify the configuration to add a redundant control node. Example 6-5 shows the output of  ltfsee_config -m SET_CTRL_NODE  to create a redundant  control node. In this example, the cluster has two libraries connected and will only perform  setting a redundant control node on one of the two libraries. Repeat the same steps and select the second library to make a redundant control node for the second library. Example 6-5 Setting existing node to be redundant control node [root@ltfsml1 ~]# ltfsee_config -m SET_CTRL_NODE The EE configuration script is starting: /opt/ibm/ltfsee/bin/ltfsee_config -m  SET_CTRL_NODE SET_CTRL_NODE mode starts . ## 1. Check to see if the cluster is already created ## The cluster is already created and the configuration file ltfsee_config.filesystem  exists. ## 2. Control node configuration. ** Select a library to set control nodes. Libraries 1:0000013FA0520411 2:0000013FA0520412 q.Quit Input number >1 Set the control nodes for the library 0000013FA0520411. ** Select 1 or 2 nodes for redundant control nodes from the following list. They can be specified using comma or white space delimiters. Nodes marked [x] are the current redundant configured nodes. Nodes 1:[x]ltfsml1 2:[_]ltfsml2 q.Quit Input number >1 2 ## 3. Select control node to be active ## The following nodes are selected as redundant nodes. Select a node that will be active in the next LTFS-EE run. Nodes 1:ltfsml1 2:ltfsml2 q.Quit Input number >1 The node ebisu(9.11.120.198) has been set to be active for library ltfsee_lib Chapter 6. Configuration  115