module openconfig-system-logging {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/system/logging";

    prefix oc-log;

    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-inet-types {
      prefix oc-inet;
    }
    import openconfig-network-instance {
      prefix oc-ni;
    }

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
www.openconfig.net";

    description
      "This module defines configuration and operational state data
for common logging facilities on network systems.";

    revision "2023-07-20" {
      description
        "adding VTY and local files as logging destinations";
      reference
        "0.6.0";

    }

    revision "2023-05-04" {
      description
        "removing LOG_DESTINATION_TYPE identities";
      reference
        "0.5.0";

    }

    revision "2022-12-29" {
      description
        "Add network-instance for remote logging servers";
      reference
        "0.4.1";

    }

    revision "2018-11-21" {
      description
        "Add OpenConfig module metadata extensions.";
      reference
        "0.3.1";

    }

    revision "2017-09-18" {
      description
        "Updated to use OpenConfig types modules";
      reference
        "0.3.0";

    }

    revision "2017-07-06" {
      description
        "Move to oc-inet types, add IETF attribution, add RADIUS
counters, changed password leaf names to indicate hashed";
      reference
        "0.2.0";

    }

    revision "2017-01-29" {
      description "Initial public release";
      reference
        "0.1.0";

    }

    oc-ext:openconfig-version "0.6.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    identity SYSLOG_FACILITY {
      description
        "Base identity for Syslog message facilities.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity ALL {
      base SYSLOG_FACILITY;
      description "All supported facilities";
    }

    identity KERNEL {
      base SYSLOG_FACILITY;
      description
        "The facility for kernel messages";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity USER {
      base SYSLOG_FACILITY;
      description
        "The facility for user-level messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity MAIL {
      base SYSLOG_FACILITY;
      description
        "The facility for the mail system.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity SYSTEM_DAEMON {
      base SYSLOG_FACILITY;
      description
        "The facility for the system daemons.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity AUTH {
      base SYSLOG_FACILITY;
      description
        "The facility for security/authorization messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity SYSLOG {
      base SYSLOG_FACILITY;
      description
        "The facility for messages generated internally by syslogd
facility.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity AUTHPRIV {
      base SYSLOG_FACILITY;
      description
        "The facility for privileged security/authorization messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity NTP {
      base SYSLOG_FACILITY;
      description
        "The facility for the NTP subsystem.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity AUDIT {
      base SYSLOG_FACILITY;
      description
        "The facility for log audit messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity CONSOLE {
      base SYSLOG_FACILITY;
      description
        "The facility for log alert messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL0 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 0 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL1 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 1 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL2 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 2 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL3 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 3 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL4 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 4 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL5 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 5 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL6 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 6 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    identity LOCAL7 {
      base SYSLOG_FACILITY;
      description
        "The facility for local use 7 messages.";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }

    typedef syslog-severity {
      type enumeration {
        enum "EMERGENCY" {
          value 0;
          description
            "Emergency: system is unusable (0)";
        }
        enum "ALERT" {
          value 1;
          description
            "Alert: action must be taken immediately (1)";
        }
        enum "CRITICAL" {
          value 2;
          description
            "Critical: critical conditions (2)";
        }
        enum "ERROR" {
          value 3;
          description
            "Error: error conditions (3)";
        }
        enum "WARNING" {
          value 4;
          description
            "Warning: warning conditions (4)";
        }
        enum "NOTICE" {
          value 5;
          description
            "Notice: normal but significant  condition(5)";
        }
        enum "INFORMATIONAL" {
          value 6;
          description
            "Informational: informational messages (6)";
        }
        enum "DEBUG" {
          value 7;
          description
            "Debug: debug-level messages (7)";
        }
      }
      description
        "Syslog message severities";
      reference
        "IETF RFC 5424 - The Syslog Protocol";

    }
  }  // module openconfig-system-logging