Puppet Class: profile::dns::auth::monitoring

Defined in:
modules/profile/manifests/dns/auth/monitoring.pp

Overview

SPDX-License-Identifier: Apache-2.0



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# File 'modules/profile/manifests/dns/auth/monitoring.pp', line 2

class profile::dns::auth::monitoring {
    include ::network::constants
    include ::profile::firewall

    # Metrics!
    class { 'prometheus::node_gdnsd': }

    # Monitor gdnsd checkconf via NRPE
    class { 'gdnsd::monitor_conf': }

    # This monitors the specific authdns server directly via
    #  its own fqdn, which won't generally be one of the listener
    #  addresses we really care about.  This gives a more-direct
    #  view of reality, though, as the mapping of listener addresses
    #  to real hosts could be fluid due to routing/anycast.
    monitoring::service { 'auth dns':
        description   => 'Auth DNS',
        check_command => 'check_dns_query_auth_port!5353!www.wikipedia.org',
        notes_url     => 'https://wikitech.wikimedia.org/wiki/DNS',
    }

    # port 5353 monitoring listeners (which humans and other tools may hit!)
    firewall::service { 'udp_dns_auth_monitor':
        proto   => 'udp',
        notrack => true,
        port    => 5353,
        srange  => $network::constants::aggregate_networks,
    }
    firewall::service { 'tcp_dns_auth_monitor':
        proto   => 'tcp',
        notrack => true,
        port    => 5353,
        srange  => $network::constants::aggregate_networks,
    }

    # ensure exactly one copy of the daemon is running (there may be rare bugs
    # that cause old copies of the daemon to linger, in which case we want to
    # investigate them)
    nrpe::monitor_service { 'gdnsd_proc':
        description   => 'gdnsd daemon runs exactly once',
        contact_group => 'admins',
        nrpe_command  => '/usr/lib/nagios/plugins/check_procs -w 1:1 -c 1:1 -u gdnsd -a /usr/sbin/gdnsd',
        notes_url     => 'https://wikitech.wikimedia.org/wiki/DNS',
    }
}