Uninstall NebulaGraph¶

This topic describes how to uninstall NebulaGraph.

Caution

Before re-installing NebulaGraph on a machine, follow this topic to completely uninstall the old NebulaGraph, in case the remaining data interferes with the new services, including inconsistencies between Meta services.

Prerequisite¶

The NebulaGraph services should be stopped before the uninstallation. For more information, see Manage NebulaGraph services.

Step 1: Delete data files of the Storage and Meta Services¶

If you have modified the data_path in the configuration files for the Meta Service and Storage Service, the directories where NebulaGraph stores data may not be in the installation path of NebulaGraph. Check the configuration files to confirm the data paths, and then manually delete the directories to clear all data.

Note

For a NebulaGraph cluster, delete the data files of all Storage and Meta servers.

Check the Storage Service disk settings. For example:

########## Disk ##########
# Root data path. Split by comma. e.g. --data_path=/disk1/path1/,/disk2/path2/
# One path per Rocksdb instance.
--data_path=/nebula/data/storage

Check the Metad Service configurations and find the corresponding metadata directories.
Delete the data and the directories found in step 2.

Step 2: Delete the installation directories¶

Note

Delete all installation directories, including the cluster.id file in them.

The default installation path is /usr/local/nebula, which is specified by --prefix while installing NebulaGraph.

Uninstall NebulaGraph deployed with source code¶

Find the installation directories of NebulaGraph, and delete them all.

Uninstall NebulaGraph deployed with RPM packages¶

Run the following command to get the NebulaGraph version.
```
$ rpm -qa | grep "nebula"
```
The return message is as follows.
```
nebula-graph-2.6.2-1.x86_64
```

Run the following command to uninstall NebulaGraph.

sudo rpm -e <nebula_version>

For example:

sudo rpm -e nebula-graph-2.6.2-1.x86_64

Delete the installation directories.

Uninstall NebulaGraph deployed with DEB packages¶

Run the following command to get the NebulaGraph version.

$ dpkg -l | grep "nebula"

The return message is as follows.

ii  nebula-graph  2.6.2  amd64     Nebula Package built using CMake

Run the following command to uninstall NebulaGraph.

sudo dpkg -r <nebula_version>

For example:

sudo dpkg -r nebula-graph

Delete the installation directories.

Uninstall NebulaGraph deployed with Docker Compose¶

In the nebula-docker-compose directory, run the following command to stop the NebulaGraph services.
```
docker-compose down -v
```
Delete the nebula-docker-compose directory.

Last update: March 13, 2023