Customers that are running NMIS and OMK applications on CentOS 6 may want to move them to CentOS 7. Will article will present one method of accomplishing this.
The CentOS 7 server will run the same version of NMIS and OMK applications that are currently running on the CentOS 6 server.
After installing CentOS 7 on the new server install the following packages.
Install the correct NMIS and OMK application versions on the new CentOS 7 server. If you no longer have the installer packages for the correct versions contact support@opmantek.com and someone will provide them.
In order for the export script to work a valid ssh key must be installed in the /root/.ssh/authorized_keys file.
On both the old CentOS 6 and the new CentOS 7 servers shutdown the following services:
Run the following script on the old CentOS 6 server. The following three variables at the top of the script will need to be modified to suit your environment.
#!/bin/sh TARGET=192.168.10.67 NODEDATA=/usr/local/nmis8/database/nodes MONGODBLOC=/var/lib NODES=$(fgrep "'name'" /usr/local/nmis8/conf/Nodes.nmis | awk '{print $3}' | tr "\'" ' ' | tr ',' ' ' | awk '{print $1}') # copy mongodb rsync --progress -av $MONGODBLOC/mongo $TARGET:$MONGODBLOC/. ssh $TARGET 'chown -R mongod:mongod $MONGODBLOC/mongo' for NODE in $NODES do # create a directory to store the node export JSON files. install -d $NODEDATA # export the node records from NMIS /usr/local/nmis8/admin/node_admin.pl act=export node=$NODE file=$NODEDATA/$NODE.json # get the node data to the target server rsync -avz -e ssh $NODEDATA/* $TARGET:$NODEDATA/ rsync -avz -e ssh /usr/local/nmis8/database/nodes/$NODE $TARGET:/usr/local/nmis8/database/nodes scp /usr/local/nmis8/var/$NODE* $TARGET:/usr/local/nmis8/var # remotely add the nodes to the TARGET server ssh -t $TARGET "/usr/local/nmis8/admin/node_admin.pl act=create node=$NODE file=$NODEDATA/$NODE.json" done # Update the group list with any new groups ssh -t $TARGET "/usr/local/nmis8/admin/grouplist.pl patch=true" # copy NMIS/OMK config rsync --progress -av /usr/local/nmis8/models root@$TARGET:/usr/local/nmis8/. rsync --progress -av /usr/local/nmis8/conf root@$TARGET:/usr/local/nmis8/. rsync --progress -av /usr/local/omk/conf root@$TARGET:/usr/local/omk/. # Fix file permissions ssh $TARGET /usr/local/nmis8/admin/fixperms.pl |
in /usr/local/nmis8/conf put the correct hostname for 'server_name' attribute.
Restart the following services:
Log into the GUI on the new CentOS 7 server and verify each application is functional and presents data from before the migration.