There is a command group 'az_postgres_server arc'. This group of commands could 'manage azure arc enabled postgresql servers'. The group of commands has global parameter '--debug' which means 'Increase logging verbosity to show all debug logs.'. The group of commands has global parameter '--help -h' which means 'Show this help message and exit.'. The group of commands has global parameter '--only-show-errors' which means 'Only show errors, suppressing warnings.'. The group of commands has global parameter '--output -o' which means 'Output format.'. The group of commands has global parameter '--query' which means 'JMESPath query string. See <a href="http://jmespath.org/">http://jmespath.org/</a> for more information and examples.'. The group of commands has global parameter '--subscription' which means 'Name or ID of subscription. You can configure the default subscription using `az account set -s NAME_OR_ID`.'. The group of commands has global parameter '--verbose' which means 'Increase logging verbosity. Use --debug for full debug logs.'. This group contains a child command 'az_postgres_server arc_update'.The syntax is: az postgres server-arc update --name
                              [--cert-private-key-file]
                              [--cert-public-key-file]
                              [--cores-limit]
                              [--cores-request]
                              [--dev]
                              [--extensions]
                              [--k8s-namespace]
                              [--keytab-secret]
                              [--log-level]
                              [--memory-limit]
                              [--memory-request]
                              [--no-external-endpoint]
                              [--no-wait]
                              [--path]
                              [--port]
                              [--retention-days]
                              [--service-annotations]
                              [--service-cert-secret]
                              [--service-labels]
                              [--service-type]
                              [--use-k8s]. The 1th example of the child command would be to use it to 'update the configuration of an azure arc enabled postgresql server', the syntax is: az postgres server-arc update --path ./spec.json -n pg1 --k8s-namespace namespace --use-k8s. The 2th example of the child command would be to use it to 'enable extensions for an existing azure arc enabled postgresql server', the syntax is: az postgres server-arc update -n pg1 --extensions 'pgaudit,pg_partman' --k8s-namespace namespace --use-k8s. The 3th example of the child command would be to use it to 'remove extensions from an azure arc enabled postgresql server', the syntax is: az postgres server-arc update -n pg1 --extensions "''" --k8s-namespace namespace --use-k8s. The parameter '--name -n' is required. It is used to name of the azure arc enabled postgresql server that is being updated. the name under which your instance is deployed cannot be changed.. The parameter '--cert-private-key-file' is optional. path to the file containing a pem formatted certificate private key to be used for client ssl connections.. The parameter '--cert-public-key-file' is optional. path to the file containing a pem formatted certificate public key to be used for client ssl connections.. The parameter '--cores-limit' is optional. the maximum number of cpu cores for azure arc enabled postgresql server that can be used per node. to remove the cores_limit, specify its value as empty string.. The parameter '--cores-request' is optional. the minimum number of cpu cores that must be available per node to schedule the service. to remove the cores_request, specify its value as empty string.. The parameter '--dev' is optional. if this is specified, then it is considered a dev instance and will not be billed for.. The parameter '--extensions' is optional. comma seperated list of extensions to be enabled. to add or remove a new extension update the existing list of extensions. once enabled, extension can be installed via 'create extension' command.. The parameter '--k8s-namespace -k' is optional. the kubernetes namespace where the azure arc enabled postgresql server is deployed. if no namespace is specified, then the namespace defined in the kubeconfig will be used.. The parameter '--keytab-secret' is optional. the name of the kubernetes secret that contains the keytab file for this azure arc enabled postgresql server.. The parameter '--log-level' is optional. sets the log_min_messages setting for the postgresql engine. valid values are: debug5, debug4, debug3, debug2, debug1, info, notice, warning, error, log, fatal, panic.. The parameter '--memory-limit' is optional. the memory limit for azure arc enabled postgresql server as a number followed by ki (kilobytes), mi (megabytes), or gi (gigabytes). to remove the memory_limit, specify its value as empty string.. The parameter '--memory-request' is optional. the memory request for azure arc enabled postgresql server as a number followed by ki (kilobytes), mi (megabytes), or gi (gigabytes). to remove the memory_request, specify its value as empty string.. The parameter '--no-external-endpoint' is optional. if specified, no external service will be created. otherwise, an external service will be created using either the type given with the --service-type argument or the same service type as the data controller.. The parameter '--no-wait' is optional. do not wait for deployment to be ready before returning.. The parameter '--path' is optional. the path to the source json file for the azure arc enabled postgresql server. this is optional.. The parameter '--port' is optional. the port number on which the primary service is exposed to the end-users.. The parameter '--retention-days' is optional. backup retention period, specified in days. allowed values are 0 to 35. default is 7. setting the retention period to 0 will turn off automatic backups for azure arc enabled postgresql.. The parameter '--service-annotations' is optional. comma-separated list of annotations to apply to all external services.. The parameter '--service-cert-secret' is optional. name of the kubernetes secret to generate that hosts the ssl certificate.. The parameter '--service-labels' is optional. comma-separated list of labels to apply to all external services.. The parameter '--service-type' is optional. the type for the primary service.. The parameter '--use-k8s' is optional. use local kubernetes apis to perform this action.. 