Download the configuration

Before you can transition Solr configuration metadata, you need to download the current Solr configuration from ZooKeeper.

The migration tool supports migrating schema.xml (or managed-schema), solrconfig.xml, and solr.xml configuration files. Run these commands on the host you selected as the Solr Server for Upgrade in Set configuration properties in Cloudera Manager.

Set the CDH_SOLR_HOME environment variable for your installation method:
- Parcels:
```
export CDH_SOLR_HOME=/opt/cloudera/parcels/CDH/lib/solr
```
- Packages:
```
export CDH_SOLR_HOME=/usr/lib/solr
```
Set the JAVA_HOME environment variable to the JDK you are using. For example:
```
export JAVA_HOME="/usr/java/jdk1.8.0_141-cloudera"
```
Create a working directory for the migration:
```
mkdir $HOME/cr7-solr-migration
```
If Kerberos is enabled on the cluster, run kinit with the Solr service superuser. For example:
```
kinit solr@EXAMPLE.COM
```
Replace solr@EXAMPLE.COM with your Kerberos realm name.
Download the current (CDH 5) Solr configuration from ZooKeeper:
```
/opt/cloudera/cm/solr-upgrade/solr-upgrade.sh download-metadata -d $HOME/cr7-solr-migration
```
If Kerberos is enabled and ZooKeeper Access Controll Lists (ACLs) are configured, specify your JAAS configuration file by adding the --jaas parameter to the command. For example:
```
/opt/cloudera/cm/solr-upgrade/solr-upgrade.sh --jaas $HOME/solr-jaas.conf download-metadata -d $HOME/cr7-solr-migration
```
Initialize a directory for the migrated configuration as a copy of the current config:
```
cp -r $HOME/cr7-solr-migration $HOME/cr7-migrated-solr-config
```