ietf-system

This module contains a collection of YANG definitions for the configuration and identification of some common system properties ...

  • Version: 2014-08-06

    ietf-system@2014-08-06


    
      module ietf-system {
    
        yang-version 1;
    
        namespace
          "urn:ietf:params:xml:ns:yang:ietf-system";
    
        prefix sys;
    
        import ietf-yang-types {
          prefix yang;
        }
        import ietf-inet-types {
          prefix inet;
        }
        import ietf-netconf-acm {
          prefix nacm;
        }
        import iana-crypt-hash {
          prefix ianach;
        }
    
        organization
          "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
    
        contact
          "WG Web:   <http://tools.ietf.org/wg/netmod/>
    WG List:  <mailto:netmod@ietf.org>
    
    WG Chair: Thomas Nadeau
    	  <mailto:tnadeau@lucidvision.com>
    
    WG Chair: Juergen Schoenwaelder
    	  <mailto:j.schoenwaelder@jacobs-university.de>
    
    Editor:   Andy Bierman
    	  <mailto:andy@yumaworks.com>
    
    Editor:   Martin Bjorklund
    	  <mailto:mbj@tail-f.com>";
    
        description
          "This module contains a collection of YANG definitions for the
    configuration and identification of some common system
    properties within a device containing a NETCONF server.  This
    includes data node definitions for system identification,
    time-of-day management, user management, DNS resolver
    configuration, and some protocol operations for system
    management.
    
    Copyright (c) 2014 IETF Trust and the persons identified as
    authors of the code.  All rights reserved.
    
    Redistribution and use in source and binary forms, with or
    without modification, is permitted pursuant to, and subject
    to the license terms contained in, the Simplified BSD License
    set forth in Section 4.c of the IETF Trust's Legal Provisions
    Relating to IETF Documents
    (http://trustee.ietf.org/license-info).
    
    This version of this YANG module is part of RFC 7317; see
    the RFC itself for full legal notices.";
    
        revision "2014-08-06" {
          description "Initial revision.";
          reference
            "RFC 7317: A YANG Data Model for System Management";
    
        }
    
    
        typedef timezone-name {
          type string;
          description
            "A time zone name as used by the Time Zone Database,
    sometimes referred to as the 'Olson Database'.
    
    The exact set of valid values is an implementation-specific
    matter.  Client discovery of the exact set of time zone names
    for a particular server is out of scope.";
          reference
            "RFC 6557: Procedures for Maintaining the Time Zone Database";
    
        }
    
        feature radius {
          description
            "Indicates that the device can be configured as a RADIUS
    client.";
          reference
            "RFC 2865: Remote Authentication Dial In User Service (RADIUS)";
    
        }
    
        feature authentication {
          description
            "Indicates that the device supports configuration of
    user authentication.";
        }
    
        feature local-users {
          if-feature authentication;
          description
            "Indicates that the device supports configuration of
    local user authentication.";
        }
    
        feature radius-authentication {
          if-feature radius;
          if-feature authentication;
          description
            "Indicates that the device supports configuration of user
    authentication over RADIUS.";
          reference
            "RFC 2865: Remote Authentication Dial In User Service (RADIUS)
             RFC 5607: Remote Authentication Dial-In User Service (RADIUS)
            	  Authorization for Network Access Server (NAS)
            	  Management";
    
        }
    
        feature ntp {
          description
            "Indicates that the device can be configured to use one or
    more NTP servers to set the system date and time.";
        }
    
        feature ntp-udp-port {
          if-feature ntp;
          description
            "Indicates that the device supports the configuration of
    the UDP port for NTP servers.
    
    This is a 'feature', since many implementations do not support
    any port other than the default port.";
        }
    
        feature timezone-name {
          description
            "Indicates that the local time zone on the device
    can be configured to use the TZ database
    to set the time zone and manage daylight saving time.";
          reference
            "RFC 6557: Procedures for Maintaining the Time Zone Database";
    
        }
    
        feature dns-udp-tcp-port {
          description
            "Indicates that the device supports the configuration of
    the UDP and TCP port for DNS servers.
    
    This is a 'feature', since many implementations do not support
    any port other than the default port.";
        }
    
        identity authentication-method {
          description
            "Base identity for user authentication methods.";
        }
    
        identity radius {
          base authentication-method;
          description
            "Indicates user authentication using RADIUS.";
          reference
            "RFC 2865: Remote Authentication Dial In User Service (RADIUS)
             RFC 5607: Remote Authentication Dial-In User Service (RADIUS)
            	  Authorization for Network Access Server (NAS)
            	  Management";
    
        }
    
        identity local-users {
          base authentication-method;
          description
            "Indicates password-based authentication of locally
    configured users.";
        }
    
        identity radius-authentication-type {
          description
            "Base identity for RADIUS authentication types.";
        }
    
        identity radius-pap {
          base radius-authentication-type;
          description
            "The device requests Password Authentication Protocol (PAP)
    authentication from the RADIUS server.";
          reference
            "RFC 2865: Remote Authentication Dial In User Service (RADIUS)";
    
        }
    
        identity radius-chap {
          base radius-authentication-type;
          description
            "The device requests Challenge Handshake Authentication
    Protocol (CHAP) authentication from the RADIUS server.";
          reference
            "RFC 2865: Remote Authentication Dial In User Service (RADIUS)";
    
        }
    
        container system {
          description
            "System group configuration.";
          leaf contact {
            type string;
            description
              "The administrator contact information for the system.
    
    A server implementation MAY map this leaf to the sysContact
    MIB object.  Such an implementation needs to use some
    mechanism to handle the differences in size and characters
    allowed between this leaf and sysContact.  The definition of
    such a mechanism is outside the scope of this document.";
            reference
              "RFC 3418: Management Information Base (MIB) for the
              	  Simple Network Management Protocol (SNMP)
              	  SNMPv2-MIB.sysContact";
    
          }
    
          leaf hostname {
            type inet:domain-name;
            description
              "The name of the host.  This name can be a single domain
    label or the fully qualified domain name of the host.";
          }
    
          leaf location {
            type string;
            description
              "The system location.
    
    A server implementation MAY map this leaf to the sysLocation
    MIB object.  Such an implementation needs to use some
    mechanism to handle the differences in size and characters
    allowed between this leaf and sysLocation.  The definition
    of such a mechanism is outside the scope of this document.";
            reference
              "RFC 3418: Management Information Base (MIB) for the
              	  Simple Network Management Protocol (SNMP)
              	  SNMPv2-MIB.sysLocation";
    
          }
    
          container clock {
            description
              "Configuration of the system date and time properties.";
            choice timezone {
              description
                "The system time zone information.";
              case timezone-name {
                if-feature timezone-name;
                leaf timezone-name {
                  type timezone-name;
                  description
                    "The TZ database name to use for the system, such
    as 'Europe/Stockholm'.";
                }
              }  // case timezone-name
              leaf timezone-utc-offset {
                type int16 {
                  range "-1500 .. 1500";
                }
                units "minutes";
                description
                  "The number of minutes to add to UTC time to
    identify the time zone for this system.  For example,
    'UTC - 8:00 hours' would be represented as '-480'.
    Note that automatic daylight saving time adjustment
    is not provided if this object is used.";
              }
            }  // choice timezone
          }  // container clock
    
          container ntp {
            if-feature ntp;
            presence
              "Enables the NTP client unless the 'enabled' leaf
    (which defaults to 'true') is set to 'false'";
            description
              "Configuration of the NTP client.";
            leaf enabled {
              type boolean;
              default "true";
              description
                "Indicates that the system should attempt to
    synchronize the system clock with an NTP server
    from the 'ntp/server' list.";
            }
    
            list server {
              key "name";
              description
                "List of NTP servers to use for system clock
    synchronization.  If '/system/ntp/enabled'
    is 'true', then the system will attempt to
    contact and utilize the specified NTP servers.";
              leaf name {
                type string;
                description
                  "An arbitrary name for the NTP server.";
              }
    
              choice transport {
                mandatory true;
                description
                  "The transport-protocol-specific parameters for this
    server.";
                container udp {
                  description
                    "Contains UDP-specific configuration parameters
    for NTP.";
                  leaf address {
                    type inet:host;
                    mandatory true;
                    description
                      "The address of the NTP server.";
                  }
    
                  leaf port {
                    if-feature ntp-udp-port;
                    type inet:port-number;
                    default "123";
                    description
                      "The port number of the NTP server.";
                  }
                }  // container udp
              }  // choice transport
    
              leaf association-type {
                type enumeration {
                  enum "server" {
                    value 0;
                    description
                      "Use client association mode.  This device
    will not provide synchronization to the
    configured NTP server.";
                  }
                  enum "peer" {
                    value 1;
                    description
                      "Use symmetric active association mode.
    This device may provide synchronization
    to the configured NTP server.";
                  }
                  enum "pool" {
                    value 2;
                    description
                      "Use client association mode with one or
    more of the NTP servers found by DNS
    resolution of the domain name given by
    the 'address' leaf.  This device will not
    provide synchronization to the servers.";
                  }
                }
                default "server";
                description
                  "The desired association type for this NTP server.";
              }
    
              leaf iburst {
                type boolean;
                default "false";
                description
                  "Indicates whether this server should enable burst
    synchronization or not.";
              }
    
              leaf prefer {
                type boolean;
                default "false";
                description
                  "Indicates whether this server should be preferred
    or not.";
              }
            }  // list server
          }  // container ntp
    
          container dns-resolver {
            description
              "Configuration of the DNS resolver.";
            leaf-list search {
              type inet:domain-name;
              ordered-by user;
              description
                "An ordered list of domains to search when resolving
    a host name.";
            }
    
            list server {
              key "name";
              ordered-by user;
              description
                "List of the DNS servers that the resolver should query.
    
    When the resolver is invoked by a calling application, it
    sends the query to the first name server in this list.  If
    no response has been received within 'timeout' seconds,
    the resolver continues with the next server in the list.
    If no response is received from any server, the resolver
    continues with the first server again.  When the resolver
    has traversed the list 'attempts' times without receiving
    any response, it gives up and returns an error to the
    calling application.
    
    Implementations MAY limit the number of entries in this
    list.";
              leaf name {
                type string;
                description
                  "An arbitrary name for the DNS server.";
              }
    
              choice transport {
                mandatory true;
                description
                  "The transport-protocol-specific parameters for this
    server.";
                container udp-and-tcp {
                  description
                    "Contains UDP- and TCP-specific configuration
    parameters for DNS.";
                  reference
                    "RFC 1035: Domain Names - Implementation and
                    	  Specification
                     RFC 5966: DNS Transport over TCP - Implementation
                    	  Requirements";
    
                  leaf address {
                    type inet:ip-address;
                    mandatory true;
                    description
                      "The address of the DNS server.";
                  }
    
                  leaf port {
                    if-feature dns-udp-tcp-port;
                    type inet:port-number;
                    default "53";
                    description
                      "The UDP and TCP port number of the DNS server.";
                  }
                }  // container udp-and-tcp
              }  // choice transport
            }  // list server
    
            container options {
              description
                "Resolver options.  The set of available options has been
    limited to those that are generally available across
    different resolver implementations and generally useful.";
              leaf timeout {
                type uint8 {
                  range "1..max";
                }
                units "seconds";
                default "5";
                description
                  "The amount of time the resolver will wait for a
    response from each remote name server before
    retrying the query via a different name server.";
              }
    
              leaf attempts {
                type uint8 {
                  range "1..max";
                }
                default "2";
                description
                  "The number of times the resolver will send a query to
    all of its name servers before giving up and returning
    an error to the calling application.";
              }
            }  // container options
          }  // container dns-resolver
    
          container radius {
            if-feature radius;
            description
              "Configuration of the RADIUS client.";
            list server {
              key "name";
              ordered-by user;
              description
                "List of RADIUS servers used by the device.
    
    When the RADIUS client is invoked by a calling
    application, it sends the query to the first server in
    this list.  If no response has been received within
    'timeout' seconds, the client continues with the next
    server in the list.  If no response is received from any
    server, the client continues with the first server again.
    When the client has traversed the list 'attempts' times
    without receiving any response, it gives up and returns an
    error to the calling application.";
              leaf name {
                type string;
                description
                  "An arbitrary name for the RADIUS server.";
              }
    
              choice transport {
                mandatory true;
                description
                  "The transport-protocol-specific parameters for this
    server.";
                container udp {
                  description
                    "Contains UDP-specific configuration parameters
    for RADIUS.";
                  leaf address {
                    type inet:host;
                    mandatory true;
                    description
                      "The address of the RADIUS server.";
                  }
    
                  leaf authentication-port {
                    type inet:port-number;
                    default "1812";
                    description
                      "The port number of the RADIUS server.";
                  }
    
                  leaf shared-secret {
                    nacm:default-deny-all;
                    type string;
                    mandatory true;
                    description
                      "The shared secret, which is known to both the
    RADIUS client and server.";
                    reference
                      "RFC 2865: Remote Authentication Dial In User
                      	  Service (RADIUS)";
    
                  }
                }  // container udp
              }  // choice transport
    
              leaf authentication-type {
                type identityref {
                  base radius-authentication-type;
                }
                default "radius-pap";
                description
                  "The authentication type requested from the RADIUS
    server.";
              }
            }  // list server
    
            container options {
              description
                "RADIUS client options.";
              leaf timeout {
                type uint8 {
                  range "1..max";
                }
                units "seconds";
                default "5";
                description
                  "The number of seconds the device will wait for a
    response from each RADIUS server before trying with a
    different server.";
              }
    
              leaf attempts {
                type uint8 {
                  range "1..max";
                }
                default "2";
                description
                  "The number of times the device will send a query to
    all of its RADIUS servers before giving up.";
              }
            }  // container options
          }  // container radius
    
          container authentication {
            nacm:default-deny-write;
            if-feature authentication;
            description
              "The authentication configuration subtree.";
            leaf-list user-authentication-order {
              type identityref {
                base authentication-method;
              }
              must
                "(. != "sys:radius" or ../../radius/server)" {
                error-message
                  "When 'radius' is used, a RADIUS server must be configured.";
                description
                  "When 'radius' is used as an authentication method,
    a RADIUS server must be configured.";
              }
              ordered-by user;
              description
                "When the device authenticates a user with a password,
    it tries the authentication methods in this leaf-list in
    order.  If authentication with one method fails, the next
    method is used.  If no method succeeds, the user is
    denied access.
    
    An empty user-authentication-order leaf-list still allows
    authentication of users using mechanisms that do not
    involve a password.
    
    If the 'radius-authentication' feature is advertised by
    the NETCONF server, the 'radius' identity can be added to
    this list.
    
    If the 'local-users' feature is advertised by the
    NETCONF server, the 'local-users' identity can be
    added to this list.";
            }
    
            list user {
              if-feature local-users;
              key "name";
              description
                "The list of local users configured on this device.";
              leaf name {
                type string;
                description
                  "The user name string identifying this entry.";
              }
    
              leaf password {
                type ianach:crypt-hash;
                description
                  "The password for this entry.";
              }
    
              list authorized-key {
                key "name";
                description
                  "A list of public SSH keys for this user.  These keys
    are allowed for SSH authentication, as described in
    RFC 4253.";
                reference
                  "RFC 4253: The Secure Shell (SSH) Transport Layer
                  	  Protocol";
    
                leaf name {
                  type string;
                  description
                    "An arbitrary name for the SSH key.";
                }
    
                leaf algorithm {
                  type string;
                  mandatory true;
                  description
                    "The public key algorithm name for this SSH key.
    
    Valid values are the values in the IANA 'Secure Shell
    (SSH) Protocol Parameters' registry, Public Key
    Algorithm Names.";
                  reference
                    "IANA 'Secure Shell (SSH) Protocol Parameters'
                    registry, Public Key Algorithm Names";
    
                }
    
                leaf key-data {
                  type binary;
                  mandatory true;
                  description
                    "The binary public key data for this SSH key, as
    specified by RFC 4253, Section 6.6, i.e.:
    
      string    certificate or public key format
    	    identifier
      byte[n]   key/certificate data.";
                  reference
                    "RFC 4253: The Secure Shell (SSH) Transport Layer
                    	  Protocol";
    
                }
              }  // list authorized-key
            }  // list user
          }  // container authentication
        }  // container system
    
        container system-state {
          config false;
          description
            "System group operational state.";
          container platform {
            description
              "Contains vendor-specific information for
    identifying the system platform and operating system.";
            reference
              "IEEE Std 1003.1-2008 - sys/utsname.h";
    
            leaf os-name {
              type string;
              description
                "The name of the operating system in use -
    for example, 'Linux'.";
              reference
                "IEEE Std 1003.1-2008 - utsname.sysname";
    
            }
    
            leaf os-release {
              type string;
              description
                "The current release level of the operating
    system in use.  This string MAY indicate
    the OS source code revision.";
              reference
                "IEEE Std 1003.1-2008 - utsname.release";
    
            }
    
            leaf os-version {
              type string;
              description
                "The current version level of the operating
    system in use.  This string MAY indicate
    the specific OS build date and target variant
    information.";
              reference
                "IEEE Std 1003.1-2008 - utsname.version";
    
            }
    
            leaf machine {
              type string;
              description
                "A vendor-specific identifier string representing
    the hardware in use.";
              reference
                "IEEE Std 1003.1-2008 - utsname.machine";
    
            }
          }  // container platform
    
          container clock {
            description
              "Monitoring of the system date and time properties.";
            leaf current-datetime {
              type yang:date-and-time;
              description
                "The current system date and time.";
            }
    
            leaf boot-datetime {
              type yang:date-and-time;
              description
                "The system date and time when the system last restarted.";
            }
          }  // container clock
        }  // container system-state
    
        rpc set-current-datetime {
          nacm:default-deny-all;
          description
            "Set the /system-state/clock/current-datetime leaf
    to the specified value.
    
    If the system is using NTP (i.e., /system/ntp/enabled
    is set to 'true'), then this operation will fail with
    error-tag 'operation-failed' and error-app-tag value of
    'ntp-active'.";
          input {
            leaf current-datetime {
              type yang:date-and-time;
              mandatory true;
              description
                "The current system date and time.";
            }
          }
        }  // rpc set-current-datetime
    
        rpc system-restart {
          nacm:default-deny-all;
          description
            "Request that the entire system be restarted immediately.
    A server SHOULD send an rpc reply to the client before
    restarting the system.";
        }  // rpc system-restart
    
        rpc system-shutdown {
          nacm:default-deny-all;
          description
            "Request that the entire system be shut down immediately.
    A server SHOULD send an rpc reply to the client before
    shutting down the system.";
        }  // rpc system-shutdown
      }  // module ietf-system
    

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