module: ietf-syslog   +--rw syslog!      +--rw actions         +--rw console! {console-action}?         |  +--rw facility-filter         |  |  +--rw facility-list* [facility severity]         |  |     +--rw facility            union         |  |     +--rw severity            union         |  |     +--rw advanced-compare {select-adv-compare}?         |  |        +--rw compare?   enumeration         |  |        +--rw action?    enumeration         |  +--rw pattern-match?     string {select-match}?         +--rw file {file-action}?         |  +--rw log-file* [name]         |     +--rw name               inet:uri         |     +--rw facility-filter         |     |  +--rw facility-list* [facility severity]         |     |     +--rw facility            union         |     |     +--rw severity            union         |     |     +--rw advanced-compare {select-adv-compare}?         |     |        +--rw compare?   enumeration         |     |        +--rw action?    enumeration         |     +--rw pattern-match?     string {select-match}?         |     +--rw structured-data?   boolean {structured-data}?         |     +--rw file-rotation         |        +--rw number-of-files?   uint32 {file-limit-size}?         |        +--rw max-file-size?     uint32 {file-limit-size}?         |        +--rw rollover?          uint32         |        |       {file-limit-duration}?         |        +--rw retention?         uint32         |                {file-limit-duration}?         +--rw remote {remote-action}?            +--rw destination* [name]               +--rw name                 string               +--rw (transport)               |  +--:(udp)               |  |  +--rw udp               |  |     +--rw address?   inet:host               |  |     +--rw port?      inet:port-number               |  +--:(tls)               |     +--rw tls               |        +--rw address?        inet:host               |        +--rw port?           inet:port-number               |        +--rw client-auth               |        |  +--rw (auth-type)?               |        |     +--:(certificate)               |        |        +--rw certificate?   leafref               |        +--rw server-auth               |        |  +--rw pinned-ca-certs?       leafref               |        |  +--rw pinned-server-certs?   leafref               |        +--rw hello-params               |                {tls-client-hello-params-config}?               |           +--rw tls-versions               |           |  +--rw tls-version*   identityref               |           +--rw cipher-suites               |              +--rw cipher-suite*   identityref               +--rw facility-filter               |  +--rw facility-list* [facility severity]               |     +--rw facility            union               |     +--rw severity            union               |     +--rw advanced-compare {select-adv-compare}?               |        +--rw compare?   enumeration               |        +--rw action?    enumeration               +--rw pattern-match?       string {select-match}?               +--rw structured-data?     boolean {structured-data}?               +--rw facility-override?   identityref               +--rw source-interface?    if:interface-ref               |       {remote-source-interface}?               +--rw signing! {signed-messages}?                  +--rw cert-signers                     +--rw cert-signer* [name]                     |  +--rw name              string                     |  +--rw cert                     |  |  +--rw algorithm?                     |  |  |       identityref                     |  |  +--rw private-key?                     |  |  |       union                     |  |  +--rw public-key?                     |  |  |       binary                     |  |  +---x generate-private-key                     |  |  |  +---w input                     |  |  |     +---w algorithm?                     |  |  |             identityref                     |  |  +--rw certificates                     |  |  |  +--rw certificate* [name]                     |  |  |     +--rw name     string                     |  |  |     +--rw value?   binary                     |  |  +---x generate-certificate-signing-request                     |  |     +---w input                     |  |     |  +---w subject       binary                     |  |     |  +---w attributes?   binary                     |  |     +--ro output                     |  |        +--ro certificate-signing-request                     |  |                binary                     |  +--rw hash-algorithm?   enumeration                     +--rw cert-initial-repeat?   uint32                     +--rw cert-resend-delay?     uint32                     +--rw cert-resend-count?     uint32                     +--rw sig-max-delay?         uint32                     +--rw sig-number-resends?    uint32                     +--rw sig-resend-delay?      uint32                     +--rw sig-resend-count?      uint32

<CODE BEGINS> file "ietf-syslog@2018-03-15.yang"module ietf-syslog {  yang-version 1.1;  namespace "urn:ietf:params:xml:ns:yang:ietf-syslog";  prefix syslog;  import ietf-inet-types {    prefix inet;    reference      "RFC 6991: Common YANG Data Types";  }  import ietf-interfaces {    prefix if;    reference      "RFC8343: A YANG Data Model       for Interface Management";  }  import ietf-tls-client {    prefix tlsc;    reference      "RFCYYY2:       YANG Groupings for TLS Clients and TLS Servers";  }  import ietf-keystore {    prefix ks;    reference      "RFCYYY1: YANG Data Model for a       Keystore Mechanism";  }  organization      "IETF NETMOD (Network Modeling) Working Group";  contact    "WG Web:   <http://tools.ietf.org/wg/netmod/>     WG List:  <mailto:netmod@ietf.org>     Editor:   Kiran Agrahara Sreenivasa               <mailto:kirankoushik.agraharasreenivasa@                       verizonwireless.com>     Editor:   Clyde Wildes               <mailto:cwildes@cisco.com>";  description    "This module contains a collection of YANG definitions     for syslog configuration.     Copyright (c) 2018 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).     The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL     NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'MAY', and     'OPTIONAL' in the module text are to be interpreted as     described in RFC 2119 (http://tools.ietf.org/html/rfc2119).     This version of this YANG module is part of RFC zzzz     (http://tools.ietf.org/html/rfczzzz); see the RFC itself for     full legal notices.";  revision 2018-03-15 {    description      "Initial Revision";    reference      "RFC zzzz: Syslog YANG Model";  }  feature console-action {    description      "This feature indicates that the local console action is       supported.";  }  feature file-action {    description      "This feature indicates that the local file action is       supported.";  }  feature file-limit-size {    description      "This feature indicates that file logging resources       are managed using size and number limits.";  }  feature file-limit-duration {    description      "This feature indicates that file logging resources       are managed using time based limits.";  }  feature remote-action {    description      "This feature indicates that the remote server action is       supported.";  }  feature remote-source-interface {    description      "This feature indicates that source-interface is supported       supported for the remote-action.";  }  feature select-adv-compare {    description      "This feature represents the ability to select messages       using the additional comparison operators when comparing       the syslog message severity.";  }  feature select-match {    description      "This feature represents the ability to select messages       based on a Posix 1003.2 regular expression pattern match.";  }  feature structured-data {    description      "This feature represents the ability to log messages       in structured-data format.";    reference      "RFC 5424: The Syslog Protocol";  }  feature signed-messages {    description      "This feature represents the ability to configure signed       syslog messages.";    reference      "RFC 5848: Signed Syslog Messages";  }  typedef syslog-severity {      type enumeration {      enum "emergency" {        value 0;        description          "The severity level 'Emergency' indicating that the           system is unusable.";      }      enum "alert" {        value 1;        description          "The severity level 'Alert' indicating that an action           must be taken immediately.";      }      enum "critical" {        value 2;        description          "The severity level 'Critical' indicating a critical           condition.";      }      enum "error" {        value 3;        description          "The severity level 'Error' indicating an error           condition.";      }      enum "warning" {        value 4;        description          "The severity level 'Warning' indicating a warning           condition.";      }      enum "notice" {        value 5;        description          "The severity level 'Notice' indicating a normal but           significant condition.";      }      enum "info" {        value 6;        description          "The severity level 'Info' indicating an informational           message.";      }      enum "debug" {        value 7;        description          "The severity level 'Debug' indicating a debug-level           message.";      }    }    description      "The definitions for Syslog message severity.       Note that a lower value is a higher severity. Comparisons of       equal-or-higher severity mean equal or lower numeric value";    reference      "RFC 5424: The Syslog Protocol";  }  identity syslog-facility {    description      "This identity is used as a base for all syslog facilities.";    reference      "RFC 5424: The Syslog Protocol";  }  identity kern {    base syslog-facility;    description      "The facility for kernel messages (0).";    reference      "RFC 5424: The Syslog Protocol";  }  identity user {    base syslog-facility;    description      "The facility for user-level messages (1).";    reference      "RFC 5424: The Syslog Protocol";  }  identity mail {    base syslog-facility;    description      "The facility for the mail system (2).";    reference      "RFC 5424: The Syslog Protocol";  }  identity daemon {    base syslog-facility;    description      "The facility for the system daemons (3).";    reference      "RFC 5424: The Syslog Protocol";   }  identity auth {    base syslog-facility;    description      "The facility for security/authorization messages (4).";    reference      "RFC 5424: The Syslog Protocol";  }  identity syslog {    base syslog-facility;    description      "The facility for messages generated internally by syslogd       facility (5).";    reference      "RFC 5424: The Syslog Protocol";  }  identity lpr {    base syslog-facility;    description      "The facility for the line printer subsystem (6).";    reference      "RFC 5424: The Syslog Protocol";  }  identity news {    base syslog-facility;    description      "The facility for the network news subsystem (7).";    reference      "RFC 5424: The Syslog Protocol";  }  identity uucp {    base syslog-facility;    description      "The facility for the UUCP subsystem (8).";    reference      "RFC 5424: The Syslog Protocol";  }  identity cron {    base syslog-facility;    description      "The facility for the clock daemon (9).";    reference      "RFC 5424: The Syslog Protocol";  }  identity authpriv {    base syslog-facility;    description      "The facility for privileged security/authorization messages       (10).";    reference      "RFC 5424: The Syslog Protocol";  }  identity ftp {    base syslog-facility;    description      "The facility for the FTP daemon (11).";    reference      "RFC 5424: The Syslog Protocol";  }  identity ntp {    base syslog-facility;    description      "The facility for the NTP subsystem (12).";    reference      "RFC 5424: The Syslog Protocol";  }  identity audit {    base syslog-facility;    description      "The facility for log audit messages (13).";    reference      "RFC 5424: The Syslog Protocol";  }  identity console {    base syslog-facility;    description      "The facility for log alert messages (14).";    reference      "RFC 5424: The Syslog Protocol";  }  identity cron2 {    base syslog-facility;    description      "The facility for the second clock daemon (15).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local0 {    base syslog-facility;    description      "The facility for local use 0 messages (16).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local1 {    base syslog-facility;    description      "The facility for local use 1 messages (17).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local2 {    base syslog-facility;    description      "The facility for local use 2 messages (18).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local3 {    base syslog-facility;    description      "The facility for local use 3 messages (19).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local4 {    base syslog-facility;    description      "The facility for local use 4 messages (20).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local5 {    base syslog-facility;    description      "The facility for local use 5 messages (21).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local6 {    base syslog-facility;    description      "The facility for local use 6 messages (22).";    reference      "RFC 5424: The Syslog Protocol";  }  identity local7 {    base syslog-facility;    description      "The facility for local use 7 messages (23).";    reference      "RFC 5424: The Syslog Protocol";  }  grouping severity-filter {    description      "This grouping defines the processing used to select       log messages by comparing syslog message severity using       the following processing rules:        - if 'none', do not match.        - if 'all', match.        - else compare message severity with the specified severity          according to the default compare rule (all messages of the          specified severity and greater match) or if the          select-adv-compare feature is present, use the          advance-compare rule.";    leaf severity {      type union {        type syslog-severity;        type enumeration {          enum none {            value 2147483647;            description              "This enum describes the case where no severities               are selected.";          }          enum all {            value -2147483648;            description              "This enum describes the case where all severities               are selected.";          }        }      }      mandatory true;      description        "This leaf specifies the syslog message severity.";    }    container advanced-compare {      when '../severity != "all" and           ../severity != "none"' {        description          "The advanced compare container is not applicable for           severity 'all' or severity 'none'";      }      if-feature select-adv-compare;      leaf compare {        type enumeration {          enum equals {            description              "This enum specifies that the severity comparison               operation will be equals.";          }          enum equals-or-higher {            description              "This enum specifies that the severity comparison               operation will be equals or higher.";          }        }        default equals-or-higher;        description          "The compare can be used to specify the comparison           operator that should be used to compare the syslog message           severity with the specified severity.";      }      leaf action {        type enumeration {          enum log {            description              "This enum specifies that if the compare operation is               true the message will be logged.";           }          enum block {            description              "This enum specifies that if the compare operation is               true the message will not be logged.";          }        }        default log;        description          "The action can be used to specify if the message should           be logged or blocked based on the outcome of the compare           operation.";      }      description        "This container describes additional severity compare         operations that can be used in place of the default         severity comparison. The compare leaf specifies the type of         the compare that is done and the action leaf specifies the         intended result.         Example: compare->equals and action->block means         messages that have a severity that are equal to the         specified severity will not be logged.";    }  }  grouping selector {    description      "This grouping defines a syslog selector which is used to       select log messages for the log-actions (console, file,       remote, etc.). Choose one or both of the following:         facility [<facility> <severity>...]         pattern-match regular-expression-match-string       If both facility and pattern-match are specified, both must       match in order for a log message to be selected.";    container facility-filter {      description        "This container describes the syslog filter parameters.";      list facility-list {        key "facility severity";        ordered-by user;        description          "This list describes a collection of syslog           facilities and severities.";        leaf facility {          type union {            type identityref {              base syslog-facility;            }            type enumeration {              enum all {                description                  "This enum describes the case where all                   facilities are requested.";              }            }          }          description            "The leaf uniquely identifies a syslog facility.";        }        uses severity-filter;      }    }    leaf pattern-match {      if-feature select-match;      type string;      description        "This leaf describes a Posix 1003.2 regular expression         string that can be used to select a syslog message for         logging. The match is performed on the SYSLOG-MSG field.";      reference        "RFC 5424: The Syslog Protocol         Std-1003.1-2008 Regular Expressions";    }  }  grouping structured-data {    description      "This grouping defines the syslog structured data option       which is used to select the format used to write log       messages.";    leaf structured-data {      if-feature structured-data;      type boolean;      default false;      description        "This leaf describes how log messages are written.         If true, messages will be written with one or more         STRUCTURED-DATA elements; if false, messages will be         written with STRUCTURED-DATA = NILVALUE.";      reference        "RFC 5424: The Syslog Protocol";    }  }  container syslog {    presence "Enables logging.";    description      "This container describes the configuration parameters for       syslog.";    container actions {      description        "This container describes the log-action parameters         for syslog.";      container console {        if-feature console-action;        presence "Enables logging to the console";        description          "This container describes the configuration parameters           for console logging.";        uses selector;      }      container file {        if-feature file-action;        description          "This container describes the configuration parameters for           file logging. If file-archive limits are not supplied, it           is assumed that the local implementation defined limits           will be used.";        list log-file {          key "name";          description            "This list describes a collection of local logging             files.";          leaf name {            type inet:uri {              pattern 'file:.*';            }            description              "This leaf specifies the name of the log file which               MUST use the uri scheme file:.";            reference                "RFC 8089: The file URI Scheme";          }          uses selector;          uses structured-data;          container file-rotation {            description              "This container describes the configuration               parameters for log file rotation.";            leaf number-of-files {              if-feature file-limit-size;              type uint32;              default 1;              description                "This leaf specifies the maximum number of log                 files retained. Specify 1 for implementations                 that only support one log file.";            }            leaf max-file-size {              if-feature file-limit-size;              type uint32;              units "megabytes";              description                "This leaf specifies the maximum log file size.";            }            leaf rollover {              if-feature file-limit-duration;              type uint32;              units "minutes";              description                "This leaf specifies the length of time that log                 events should be written to a specific log file.                 Log events that arrive after the rollover period                 cause the current log file to be closed and a new                 log file to be opened.";            }            leaf retention {              if-feature file-limit-duration;              type uint32;              units "minutes";              description                "This leaf specifies the length of time that                 completed/closed log event files should be stored                 in the file system before they are removed.";            }          }        }      }      container remote {        if-feature remote-action;        description          "This container describes the configuration parameters           for forwarding syslog messages to remote relays or           collectors.";        list destination {          key "name";          description            "This list describes a collection of remote logging             destinations.";          leaf name {            type string;            description              "An arbitrary name for the endpoint to connect to.";          }          choice transport {            mandatory true;            description              "This choice describes the transport option.";            case udp {              container udp {                description                  "This container describes the UDP transport                   options.";                reference                  "RFC 5426: Transmission of Syslog Messages over                   UDP";                leaf address {                  type inet:host;                  description                    "The leaf uniquely specifies the address of                     the remote host. One of the following must be                     specified: an ipv4 address, an ipv6 address,                     or a host name.";                }                leaf port {                  type inet:port-number;                  default 514;                  description                    "This leaf specifies the port number used to                     deliver messages to the remote server.";                }              }            }            case tls {              container tls {                description                  "This container describes the TLS transport                   options.";                reference                  "RFC 5425: Transport Layer Security (TLS)                   Transport Mapping for Syslog ";                leaf address {                  type inet:host;                  description                    "The leaf uniquely specifies the address of                     the remote host. One of the following must be                     specified: an ipv4 address, an ipv6 address,                     or a host name.";                }                leaf port {                  type inet:port-number;                  default 6514;                  description                    "TCP port 6514 has been allocated as the default                     port for syslog over TLS.";                }                uses tlsc:tls-client-grouping;              }            }          }          uses selector;          uses structured-data;          leaf facility-override {            type identityref {              base syslog-facility;            }            description              "If specified, this leaf specifies the facility used               to override the facility in messages delivered to               the remote server.";          }          leaf source-interface {            if-feature remote-source-interface;            type if:interface-ref;            description              "This leaf sets the source interface to be used to               send messages to the remote syslog server. If not               set, messages can be sent on any interface.";          }          container signing {            if-feature signed-messages;            presence              "If present, syslog-signing options is activated.";            description              "This container describes the configuration               parameters for signed syslog messages.";            reference              "RFC 5848: Signed Syslog Messages";            container cert-signers {              description                "This container describes the signing certificate                 configuration for Signature Group 0 which covers                 the case for administrators who want all Signature                 Blocks to be sent to a single destination.";              list cert-signer {                key "name";                description                  "This list describes a collection of syslog                   message signers.";                leaf name {                  type string;                  description                    "This leaf specifies the name of the syslog                     message signer.";                }                container cert {                  uses ks:private-key-grouping;                  uses ks:certificate-grouping;                  description                   "This is the certificate that is periodically                    sent to the remote receiver. Selection of the                    certificate also implicitly selects the private                    key used to sign the syslog messages.";                }                leaf hash-algorithm {                  type enumeration {                    enum SHA1 {                      value 1;                      description                        "This enum describes the SHA1 algorithm.";                    }                    enum SHA256 {                      value 2;                      description                        "This enum describes the SHA256 algorithm.";                    }                  }                  description                    "This leaf describes the syslog signer hash                     algorithm used.";                }              }              leaf cert-initial-repeat {                type uint32;                default 3;                description                "This leaf specifies the number of times each                 Certificate Block should be sent before the first                 message is sent.";              }              leaf cert-resend-delay {                type uint32;                units "seconds";                default 3600;                description                  "This leaf specifies the maximum time delay in                   seconds until resending the Certificate Block.";              }              leaf cert-resend-count {                type uint32;                default 0;                description                  "This leaf specifies the maximum number of other                   syslog messages to send until resending the                   Certificate Block.";              }              leaf sig-max-delay {                type uint32;                units "seconds";                default 60;                description                  "This leaf specifies when to generate a new                   Signature Block. If this many seconds have                   elapsed since the message with the first message                   number of the Signature Block was sent, a new                   Signature Block should be generated.";              }              leaf sig-number-resends {                type uint32;                default 0;                description                  "This leaf specifies the number of times a                   Signature Block is resent. (It is recommended to                   select a value of greater than 0 in particular                   when the UDP transport RFC 5426 is used.).";              }              leaf sig-resend-delay {                type uint32;                units "seconds";                default 5;                description                  "This leaf specifies when to send the next                   Signature Block transmission based on time. If                   this many seconds have elapsed since the previous                   sending of this Signature Block, resend it.";              }              leaf sig-resend-count {                type uint32;                default 0;                description                  "This leaf specifies when to send the next                   Signature Block transmission based on a count.                   If this many other syslog messages have been                   sent since the previous sending of this                   Signature Block, resend it. A value of 0 means                   that you don't resend based on the number of                   messages.";              }            }          }        }      }    }  }}<CODE ENDS>