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Run the following script on the old CentOS 6 server. The following four six variables at the top of the script will need to be modified to suit your environment.
Please take into consideration that the new environment may store the database in different folders. Check your "dbpath" in your servers (/etc/mongod.conf).
- TARGET : IP address of the new CentOS 7 server.
- NODEDATA: Full path to the directory that contains NMIS node files.
- MONGODBLOCSOURCE_MONGODBLOCATION: Full path to the current Mongo database directory to be migrated.
- SOURCE_MONGODBDIR: The name of the directory that contains the current MongoDB files.
- DESTINATION_MONGODBLOCATION: Full path to the new Mongo database directory.
- DESTINATION_MONGODBDIR: The name of the directory that will receive the MongoDB files.
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#!/bin/sh TARGET=192.168.10.67 NODEDATA=/usr/local/nmis8/database/nodes MONGODBLOC SOURCE_MONGODBLOCATION=/data SOURCE_MONGODBDIR=mongodb DESTINATION_MONGODBLOCATION=/var/lib DESTINATION_MONGODBDIR=mongo NODES=$(fgrep "'name'" /usr/local/nmis8/conf/Nodes.nmis | awk '{print $3}' | tr "\'" ' ' | tr ',' ' ' | awk '{print $1}') # copy mongodb rsync --progress -av $MONGODBLOC/$MONGODBDIR$SOURCE_MONGODBLOCATION/$SOURCE_MONGODBDIR $TARGET:$MONGODBLOC$DESTINATION_MONGODBLOCATION/. ssh $TARGET "chown -R mongod:mongod $MONGODBLOC/$MONGODBDIR$DESTINATION_MONGODBLOCATION/$DESTINATION_MONGODBDIR" 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 |
Update your Mongo Config File on the New CentOS 7 Server
Update your /etc/mongod.conf to reflect the current configuration from your old CentOS 6 Server, note that the dbpath could be different from your old environment.
Correct NMIS Hostname on the New CentOS 7 Server
in In /usr/local/nmis8/conf put the correct hostname for 'server_name' attribute.
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