Deploying and configuring multi-tenant node¶

The multi-tenant node protects several independent company infrastructures or isolated environments simultaneously.

Multi-tenant node deployment options¶

Choose the multi-tenant node deployment option based on your infrastructure and the addressed issue:

Deploy one Wallarm node to filter traffic of all clients or isolated environments as follows:
- One Wallarm node processes the traffic of several tenants (Tenant 1, Tenant 2).
  
  The term "partner client"
  
  Previously, "tenant" was referred to as "partner client". We further use the term "tenant".
- The Wallarm node identifies the tenant that receives the traffic by the "tenant-application" link ID (wallarm_application).
- For the domains https://tenant1.com and https://tenant2.com, the DNS A records with the partner or client IP address 225.130.128.241 are configured. This setting is shown as an example, a different setting can be used on the partner and tenant side.
- On the partner's side, proxying of legitimate requests to the addresses of tenant Tenant 1 (http://upstream1:8080) and Tenant 2 (http://upstream2:8080) is configured. This setting is shown as an example, a different setting can be used on the partner and tenant side.
If the Wallarm node is of the CDN type

Since the wallarm_application configuration is not supported by the Wallarm CDN node, this deployment option is not supported by the CDN node type too. If the node type being used is CDN, please deploy several nodes each filtering the traffic of a particular tenant.
Deploy several Wallarm nodes each filtering the traffic of a particular tenant.

Tenant traffic will be processed similarly to the option above but on several servers of a partner or tenants.

Multi-tenant node:

Can be installed on the same platforms and according to the same instructions as a regular filtering node.
Can be installed on the technical tenant or tenant level. If you want to provide a tenant with access to Wallarm Console, the filtering node must be installed at the corresponding tenant level.
Can be configured according to the same instructions as a regular filtering node.
The directive wallarm_application is used to split settings by the tenant applications. There can be several applications.

Configured tenant accounts
Execution of further commands by the user with the Global administrator or Deploy/Administrator role

The user with the Deploy/Administrator role must be added to the technical tenant or tenant account depending on the account the filtering node should be created.
Disabled two‑factor authentication for the user executing the commands
Supported platform for the filtering node installation

If it is required for the tenant to access Wallarm Console, create the filtering node within an appropriate tenant account.
Configure the filtering node via the tenant's NGINX configuration file.

Select a filtering node deployment form and follow the appropriate instructions:
If one Wallarm node filters the traffic of several clients or isolated environments, under the Global administrator user, go to Wallarm Console → Nodes, for the created node, open the action menu and select Make it multi-tenant.
Open the tenant's NGINX configuration file and specify the application IDs using the wallarm_application directive.

Example of the NGINX configuration file for the filtering node processing the traffic of two clients:
```
server {
    listen       80;
    server_name  tenant1.com;
    wallarm_mode block;
    wallarm_application 13;

    location / {
        proxy_pass      http://upstream1:8080;
    }
}

server {
    listen       80;
    server_name  tenant2.com;
    wallarm_mode monitoring;
    wallarm_application 14;

    location / {
        proxy_pass      http://upstream2:8080;
    }
}
```
- On the tenant side, the DNS A records with the partner IP address are configured
- On the partner side, proxying of requests to the addresses of tenants (http://upstream1:8080 for the tenant with the application ID 13 and http://upstream2:8080 for the tenant with the application ID 14) is configured
- All incoming requests are processed on the partner address, legitimate requests are proxied to http://upstream1:8080 for the tenant with the application ID 13 and to http://upstream2:8080 for the tenant with the application ID 14

To customize the filtering node settings, use the available directives.

Common customization options: