Using spark-submit drop-in migration tool

Installing the cde-env tool

You can install the cde-env tool as an Administrator or as a normal user. Cloudera recommends you to install the tool as an Administrator in the /opt/cloudera/bin folder so that all the users in the host can access the tool.

Administrator
User

Install the tool by copying the required binary and script files to the /opt/cloudera/bin folder so that the migration tool can run in the current gateway host.
```
$ ./cde-env.sh enable-spark-submit-proxy
```
note
If the host machine has update-alternatives installed, no need to perform the following step. You can check this by running the update-alternatives command.
Enable the installed binary and script files by granting access to those files for all users on the host using one of the following options.
note
If the host machine has update-alternatives installed, no need to perform this step. You can check this by running the update-alternatives command. Otherwise, perform the following:
- Link the existing /usr/bin/spark-submit and /usr/bin/spark3-submit.
```
$ ln -s /opt/cloudera/bin/cde /usr/bin/cde
$ ln -s /opt/cloudera/bin/cde-env.sh /usr/bin/cde-env.sh
$ ln -s -f /opt/cloudera/bin/spark-submit /usr/bin/spark-submit
$ ln -s -f /opt/cloudera/bin/spark3-submit /usr/bin/spark3-submit
```
  or
- Update PATH to point to the new installation location at the host level.
```
$ export PATH=/opt/cloudera/bin:$PATH            
```