Dell NetWorker 19.9 Administration Guide

Recovering the NMC Server

Perform the following steps to recover the NMC Server to the original host or a different host, from a point-in-time backup or the last backup time.

1. Optional, to recover from an earlier backup, determine the nsavetime of the save set.
   For example, on the NetWorker Server, type the following command:

   mminfo -avot -q client=NMC_Server,level=full -r client,name,savetime,nsavetime

   where NMC_Server is the hostname of the NMC Server.

   Output similar to the following appears:

   On Windows:

   
   client     name                             date     save time
   bu-iddnwserver C:\Program Files\EMC NetWorker\Management\nmcdb_stage\pgdata 13/03/2017 1489431765
   

   On Linux:

   
   client     name                             date     save time
   bu-iddnwserver /nsr/nmc/nmcdb_stage 13/03/2017 1489431765
   

   The nsavetime value appears in the last column.

2. On a target Linux NetWorker Authentication Service, set the LD_LIBRARY_PATH environment variable to include the postgres library path.
   For example:

   export LD_LIBRARY_PATH=NMC_Installation_dir/postgres/lib
   

   where NMC_installation_path is /opt/lgtnmc by default.

3. Change the directory to the NMC bin directory:

   On Windows the bin directory is :

   C:\Program Files\EMC NetWorker\Management\GST\bin

   On Linux the bin directory is:

   /opt/lgtonmc
4. Follow step 1-9 of Moving the NMC Server topic of NetWorker Administration Guide.
5. On the target NetWorker Authentication Service, restore the NetWorker Authentication Service backup by typing the following command:

   recoverpsm -s NetWorker_server -c source_NMC_server /nsr/nmc/nmcdb_stage
   or  
   recoverpsm -f -s NetWorker_server -c source_NMC_server -p AES_Passphrase staging_dir -d dir_name

   NOTE:If you had set datazone pass phrase during backup, then -p AES_Passphrase is required.

   where:

   • -f instructs the recovery operation to delete the database files that currently exist in the database directory. Do not use this option if you want to restore the database files to a different location.
   • NetWorker_server specifies the name of the NetWorker Server.
   • source_NMC_server specifies the name of the source NetWorker Authentication Service, when you recover the database to a different NetWorker Authentication Service host.
   • AES_Passphrase specifies the passphrase that was used during the NMC database backup.
   • staging_dir specifies the staging directory that was used during the backup of the database on the source NetWorker Authentication Service.
   • dir_name specifies the directory to relocate the recovered database files. When you use this option, you must manually copy the database files from the destination directory to the database directory defined for the NetWorker Authentication Service. Ensure that you retain the same ownership and permissions on the database files and the credential files after the copy completes.
   During a recovery of the NetWorker Authentication Service database, the console GUI is unavailable. Consequently, messages such as mount requests cannot be addressed from the console. Consider the following during a recovery of the NetWorker Authentication Service database:

   • Monitor the daemon log files for messages. The use of the NetWorker nsr_render_log command can make the daemon.raw file more user friendly for interpretation.
   • Use the nsrwatch command to view messages and use commands such as nsrjb to address those messages.

     The NetWorker Command Reference Guide provides more information about nsr_render_log, nsrwatch, nsrjb and other NetWorker commands.

6. After the recovery completes, if you stopped the NMC services, start the NMC services, by typing the following command from a prompt:

   On Windows:

   net start gstd

   On Linux:

   /etc/init.d gst start