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title: Load Balancer in Private Cluster
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# Load Balancer in Private Cluster

A **Load Balancer** in a Private Cluster helps distribute incoming traffic across multiple backend nodes to ensure:

- **High Availability**
- **Scalability**
- **Fault Tolerance**

E2E Cloud offers two types of load balancers in Private Clusters:

- [Application Load Balancer (ALB)](#application-load-balancer-alb)
- [Network Load Balancer (NLB)](#network-load-balancer-nlb)

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## Application Load Balancer (ALB)

### Steps to Create an ALB in a Private Cluster

#### 1. Select Plan
- Navigate to the **Load Balancers** section and click **Create**.

  ![Create Load Balancer](images/create_private_cluster.png)

#### 2. Choose Load Balancer Configuration
- Select **Private Cluster** as the plan.
- Choose the desired **CPU**, **RAM**, and **Storage**.

  ![Load Balancer Configuration](images/private_cluster1st.png)

#### 3. Choose Load Balancer Type
- Select **Application Load Balancer (ALB)**.

  ![Choose ALB](images/private_cluster2nd.png)

#### 4. Configure Details
- Provide a **Name**, select the **Scheme** (internal or external), and choose the **Mode**.
- Click **Next**.

  ![Configure Details](images/private_cluster3rd.png)

#### 5. Choose Backend Type
- Select **Node** or **AutoScale** as the backend type.

  ![Choose Backend Type](images/private_cluster4th.png)

#### 6. Target Mapping & Backend Configuration
- Click **Add Server**.
- In the pop-up:
  - Enter the **Server Name**
  - Enter the **Server IP** from within your Private Cluster.
- Click **Submit** to add the backend.
- Repeat the process to add multiple servers.

  ![Add Backend Server](images/private_cluster5th.png)

#### 7. Peak Performance Features
- Select **VPC**, **IPv4**, **IPv6**, and **BitNinja**.
- Set the **Connection Timeout**, **Client Timeout**, **Server Timeout**, and **HTTP Keep-Alive Timeout**.

:::info Note
**The VPC field is a required parameter when creating a Load Balancer within a Private Cluster.**
:::

  ![Performance Features](images/private_cluster6th.png)

#### 8. Review and Launch
- Review all configuration details.
- Click **Launch Load Balancer** to deploy your ALB.

  ![Launch ALB](images/alb.png)

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### Managing ALB

After successful deployment:
- Go to the **Load Balancers** section.
- Click on the ALB name to view its details.

  ![ALB Management](images/private_cluster7th.png)

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## Network Load Balancer (NLB)
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### Steps to Create an NLB in a Private Cluster

#### 1. Select Plan
- Navigate to the **Load Balancers** section in the sidebar and click **Create**.

  ![Create Load Balancer](images/private_cluster1st.png)

#### 2. Choose Load Balancer Configuration
- Select **Private Cluster** as the deployment plan.
- Choose the required **CPU** and **RAM** resources.

  ![Load Balancer Configuration](images/private_cluster8th.png)

#### 3. Configure Details
- Provide a **Name**, select the **Scheme** (internal or external).

  ![Configure Details](images/private_cluster9th.png)

#### 4. Choose Backend Type
- Select the **Backend Name**, **Routing Policy**, **Target Port**, and **Backend Server**.

  ![Choose Backend Type](images/private_cluster10.png)

#### 5. Target Mapping & Backend Configuration
- Click **Add Server**.
- In the pop-up:
  - Enter the **Server Name**
  - Enter the **Server IP** from within your Private Cluster.
- Click **Submit** to add the backend.

  ![Add Backend Server](images/private_cluster11.png)

#### 6. Peak Performance Features
- Select **VPC**, **IPv4**, **IPv6**, and **BitNinja**.
- Set the **Connection Timeout**, **Client Timeout**, **Server Timeout**, and **HTTP Keep-Alive Timeout**.

:::info Note
**The VPC field is a required parameter when creating a Load Balancer within a Private Cluster.**
:::

  ![Performance Features](images/private_cluster6th.png)

#### 7. Review and Launch
- Review all configuration details:
  - Plan
  - Load Balancer Type
  - Backend Settings
- Click **Launch Load Balancer** to finalize the deployment.

  ![Launch NLB](images/private_cluster12.png)

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### Managing NLB

After deployment:
- Go to the **Load Balancers** section.
- Click on the NLB name to view its status and configuration.

  ![Manage NLB](images/private_cluster13.png)

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