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Public IP address in an OpenSearch cluster

A public IP address is a static public IP address assigned to a node to configure access to a node in a private network from the internet. External traffic passes through the public IP address and is processed by a cloud router that performs 1:1 NAT logic.

The private subnet to which a public IP address can be assigned must comply with the requirements — before adding a public IP address, prepare the subnet.

A public IP address can be assigned:

In an OpenSearch cluster, a public IP address is assigned to all nodes in the group simultaneously. If you add a node to a group where all nodes already have IP addresses, the new node will also be assigned a public IP address.

If necessary, you can disable the public IP address for the entire node group.

Requirements for a private subnet

  • The subnet must contain a cloud router with internet access;
  • The cloud router IP address must be the default gateway in the subnet.

If the subnet does not meet the requirements, prepare it for connecting a public IP address.

Prepare a private subnet for connecting a public IP address

  1. Create a cloud router with internet access.
  2. Connect the private network to the cloud router.

1. Create a cloud router with internet access

A cloud router allows routing traffic between private networks.

The router can be used to configure internet access from a private network or to access a device in a private subnet from the internet via a public IP address.

  1. In the Control panel, on the top menu click Products and select Cloud Servers.
  2. Go to the Network section → the Cloud Routers **** tab.
  3. Click Create Router.
  4. Select the location where the cloud router will be created.
  5. Enter the router name.
  6. Check the Connect router to the internet checkbox — an external IP address will be allocated for the router.
  7. Click Create.

2. Connect a private network to a cloud router

  1. In the Control panel, on the top menu click Products and select Cloud Servers.
  2. Go to the Network section → the Cloud Routers **** tab.
  3. Open the router details page.
  4. Click Add Subnet.
  5. Select a private subnet.
  6. Optional: enter the router IP address. If you do not specify an IP address, it will be automatically selected from the available addresses in the subnet. The cloud router IP address must match the default gateway of the private subnet. The gateway can be viewed in the Control panel: in the top menu click Products → Cloud Servers → Network → tab Private Networks → network page → tab Subnets → subnet card → block Automatic Network Settings → field Subnet Gateway.
  7. Click Add Subnet.

Connect a public IP address

A public IP address is assigned to all nodes in the group simultaneously.

  1. Ensure that the cluster is in a private subnet that meets the requirements.
  2. In the Control panel, on the top menu click Products and select Managed Databases.
  3. Open the Active **** tab.
  4. Open the database cluster page → tab Settings.
  5. In the Cluster block, open the node group card.
  6. Enable the Public access **** toggle.

Disable a public IP address

The public IP address is disabled for all nodes in the group simultaneously.

  1. In the Control panel, on the top menu click Products and select Managed Databases.
  2. Open the Active **** tab.
  3. Open the database cluster page → tab Settings.
  4. In the Cluster block, open the node group card.
  5. Disable the Public access **** toggle.