Install Addons

With the release of KubeBlocks v0.8.0, Addons are decoupled from KubeBlocks and some Addons are not installed by default. If you want to use these Addons, install Addons first by index. Or if you uninstalled some Addons, you can follow the steps in this tutorial to install them again.

This tutorial takes elasticsearch as an example. You can replace elasticsearch with the Addon you need.

The official index repo is KubeBlocks index. Addons are maintained in the KubeBlocks Addon repo.

NOTE

Make sure the major version of Addons and KubeBlocks are the same.

For example, you can install an Addon v0.9.0 with KubeBlocks v0.9.2, but using mismatched major versions, such as an Addon v0.8.0 with KubeBlocks v0.9.2, may lead to errors.

(Optional) Add the KubeBlocks repo. If you install KubeBlocks with Helm, just run helm repo update.
```
helm repo add kubeblocks https://apecloud.github.io/helm-charts
helm repo update
```

View the Addon versions.

helm search repo kubeblocks/elasticsearch --devel --versions

Install the Addon (take elasticsearch as example). Specify a version with --version.

helm install kb-addon-es kubeblocks/elasticsearch --namespace kb-system --create-namespace --version <VERSION>

Verify whether this Addon is installed.

The STATUS is deployed and this Addon is installed successfully.

helm list -A
>
NAME             NAMESPACE	REVISION	UPDATED                                STATUS  	 CHART                   APP VERSION
...
kb-addon-es      kb-system	1       	2024-11-27 10:04:59.730127 +0800 CST   deployed	 elasticsearch-0.9.0     8.8.2

(Optional) You can run the command below to uninstall the Addon.

If you have created a related cluster, delete the cluster first.
```
helm uninstall kb-addon-es --namespace kb-system
```

View the index.

kbcli creates an index named kubeblocks by default and you can check whether this index is created by running kbcli addon index list.
```
kbcli addon index list
>
INDEX        URL
kubeblocks   https://github.com/apecloud/block-index.git
```
If the list is empty or you want to add your index, you can add the index manually by using kbcli addon index add <index-name> <source>. For example,
```
kbcli addon index add kubeblocks https://github.com/apecloud/block-index.git
```
If you are not sure whether the kubeblocks index is the latest version, you can update it.
```
kbcli addon index update kubeblocks
```

(Optional) Search whether the Addon exists in the index.

kbcli addon search elasticsearch
>
ADDON           VERSION         INDEX
elasticsearch   0.7.0           kubeblocks
elasticsearch   0.7.1           kubeblocks
elasticsearch   0.7.2           kubeblocks
elasticsearch   0.8.0           kubeblocks
elasticsearch   0.9.0           kubeblocks

Install the Addon.

If there are multiple index sources and versions for an Addon, you can specify an index by --index and a version by --version. The system installs the latest version in the kubeblocks index by default.
```
kbcli addon install elasticsearch --index kubeblocks --version <VERSION>
```

Verify whether this Addon is installed.

The STATUS is Enabled and this Addon is installed successfully.

kbcli addon list
>
NAME                           VERSION        PROVIDER    STATUS     AUTO-INSTALL
elasticsearch                  0.9.0          apecloud    Enabled    true

(Optional) You can run the command below to disable the Addon.

If you have created a related cluster, delete the cluster first.
```
kbcli addon disable elasticsearch
```
Or you can run the command below to uninstall the Addon.
```
kbcli addon uninstall elasticsearch
```

NOTE

kbcli supports enable/disable an Addon. You can enable/disable Addons according to your need. Moreover, when installing KubeBlocks by kbcli, some Addons are installed but remain disabled by default, with their status shown as Disabled. You can enable them by kbcli. For example,

Disable/Enable Addons

Enable an Addon.

kbcli addon enable qdrant

Disable an Addon.

kbcli addon disable qdrant

After enabling/disabling an Addon, check the Addon list to verify whether the Addon's status changes as required.