Updates the configuration of a backend server within the specified backend set.


oci nlb backend update [OPTIONS]

Required Parameters

--backend-name [text]

The name of the backend server to update. If the backend was created with an explicitly specified name, that name should be used here. If the backend was created without explicitly specifying the name, but was created using ipAddress, this is specified as <ipAddress>:<port>. If the backend was created without explicitly specifying the name, but was created using targetId, this is specified as <targetId>:<port>.

Example:` or `ocid1.privateip..oc1.<var>&lt;unique_ID&gt;</var>:8080
--backend-set-name [text]

The name of the backend set associated with the backend server.


--network-load-balancer-id [text]

The OCID of the network load balancer to update.

Optional Parameters

--from-json [text]

Provide input to this command as a JSON document from a file using the file://path-to/file syntax.

The --generate-full-command-json-input option can be used to generate a sample json file to be used with this command option. The key names are pre-populated and match the command option names (converted to camelCase format, e.g. compartment-id –> compartmentId), while the values of the keys need to be populated by the user before using the sample file as an input to this command. For any command option that accepts multiple values, the value of the key can be a JSON array.

Options can still be provided on the command line. If an option exists in both the JSON document and the command line then the command line specified value will be used.

For examples on usage of this option, please see our “using CLI with advanced JSON options” link: https://docs.cloud.oracle.com/iaas/Content/API/SDKDocs/cliusing.htm#AdvancedJSONOptions

--if-match [text]

For optimistic concurrency control. In the PUT or DELETE call for a resource, set the if-match parameter to the value of the etag from a previous GET or POST response for that resource. The resource will be updated or deleted only if the etag you provide matches the current etag value of the resource.

--is-backup [boolean]

Whether the network load balancer should treat this server as a backup unit. If true, then the network load balancer forwards no ingress traffic to this backend server unless all other backend servers not marked as “isBackup” fail the health check policy.


--is-drain [boolean]

Whether the network load balancer should drain this server. Servers marked “isDrain” receive no incoming traffic.


--is-offline [boolean]

Whether the network load balancer should treat this server as offline. Offline servers receive no incoming traffic.


--max-wait-seconds [integer]

The maximum time to wait for the work request to reach the state defined by --wait-for-state. Defaults to 1200 seconds.

--wait-for-state [text]

This operation asynchronously creates, modifies or deletes a resource and uses a work request to track the progress of the operation. Specify this option to perform the action and then wait until the work request reaches a certain state. Multiple states can be specified, returning on the first state. For example, --wait-for-state SUCCEEDED --wait-for-state FAILED would return on whichever lifecycle state is reached first. If timeout is reached, a return code of 2 is returned. For any other error, a return code of 1 is returned.

Accepted values are:

--wait-interval-seconds [integer]

Check every --wait-interval-seconds to see whether the work request has reached the state defined by --wait-for-state. Defaults to 30 seconds.

--weight [integer]

The load balancing policy weight assigned to the server. Backend servers with a higher weight receive a larger proportion of incoming traffic. For example, a server weighted ‘3’ receives three times the number of new connections as a server weighted ‘1’. For more information about load balancing policies, see How Network Load Balancing Policies Work.



Example using required parameter

Copy the following CLI commands into a file named example.sh. Run the command by typing “bash example.sh” and replacing the example parameters with your own.

Please note this sample will only work in the POSIX-compliant bash-like shell. You need to set up the OCI configuration and appropriate security policies before trying the examples.

    export compartment_id=<substitute-value-of-compartment_id> # https://docs.cloud.oracle.com/en-us/iaas/tools/oci-cli/latest/oci_cli_docs/cmdref/nlb/network-load-balancer/create.html#cmdoption-compartment-id
    export display_name=<substitute-value-of-display_name> # https://docs.cloud.oracle.com/en-us/iaas/tools/oci-cli/latest/oci_cli_docs/cmdref/nlb/network-load-balancer/create.html#cmdoption-display-name
    export subnet_id=<substitute-value-of-subnet_id> # https://docs.cloud.oracle.com/en-us/iaas/tools/oci-cli/latest/oci_cli_docs/cmdref/nlb/network-load-balancer/create.html#cmdoption-subnet-id
    export backend_name=<substitute-value-of-backend_name> # https://docs.cloud.oracle.com/en-us/iaas/tools/oci-cli/latest/oci_cli_docs/cmdref/nlb/backend/update.html#cmdoption-backend-name
    export backend_set_name=<substitute-value-of-backend_set_name> # https://docs.cloud.oracle.com/en-us/iaas/tools/oci-cli/latest/oci_cli_docs/cmdref/nlb/backend/update.html#cmdoption-backend-set-name

    network_load_balancer_id=$(oci nlb network-load-balancer create --compartment-id $compartment_id --display-name $display_name --subnet-id $subnet_id --query data.id --raw-output)

    oci nlb backend update --backend-name $backend_name --backend-set-name $backend_set_name --network-load-balancer-id $network_load_balancer_id