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    Rhel9: installing an idm server

    Scheduled Pinned Locked Moved DHCP and DNS
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    • N
      nasheayahu
      last edited by

      Morning,

      I've chosen CHAPTER 2. INSTALLING AN IDM SERVER: WITH INTEGRATED DNS, WITH AN INTEGRATED CA AS THE ROOT CA, but I'm using pfSense as my DHCP and DNS servers, so excluded the option to add the DNS.

      It complete successfully except for the time sync:

      Synchronizing time
      Augeas failed to configure file /etc/chrony.conf
      Using default chrony configuration.
      Attempting to sync time with chronyc.
      Process chronyc waitsync failed to sync time!
      Unable to sync time with chrony server, assuming the time is in sync. Please check that 123 UDP port is opened, and any time server is on network.
      Warning: IPA was unable to sync time with chrony!
      Time synchronization is required for IPA to work correctly

      which I will deal with later. The more important part is adding the records from:

      Please add records in this file to your DNS system: /tmp/ipa.system.records.7ge0a6da.db

      and I open this .db using DBeaver:

      _kerberos-master._tcp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.
_kerberos-master._udp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.
_kerberos._tcp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.
_kerberos._udp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.
_kerberos.kbbn-7.com. 3600 IN TXT "KBBN-7.COM"
_kerberos.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:tcp:idmserver.kbbn-7.com."
_kerberos.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:udp:idmserver.kbbn-7.com."
_kpasswd._tcp.kbbn-7.com. 3600 IN SRV 0 100 464 idmserver.kbbn-7.com.
_kpasswd._udp.kbbn-7.com. 3600 IN SRV 0 100 464 idmserver.kbbn-7.com.
_kpasswd.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:tcp:idmserver.kbbn-7.com."
_kpasswd.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:udp:idmserver.kbbn-7.com."
_ldap._tcp.kbbn-7.com. 3600 IN SRV 0 100 389 idmserver.kbbn-7.com.
ipa-ca.kbbn-7.com. 3600 IN A 10.30.70.106

      I'm still in the learning stages of being a IT and starting reading https://docs.netgate.com/pfsense/en/latest/services/dns/resolver.html, until then, how and where do I enter these records into pfSense DNS? I'm assuming at

      ServicesDNS / ResolverGeneral / Settings

      at the bottom of the page either Host Overrides or Domain Overrides or where?

      N 1 Reply Last reply Reply Quote 0
      • N
        nasheayahu @nasheayahu
        last edited by

        I successfully installed the idm server, but I want to do a reinstall using pfsense NTP server. I'm having trouble with "Perform a DNS service (SRV) record search for NTP servers in your environment" using

        dig +short -t SRV _ntp._udp.example.com 0 100 123 ntpserver.example.com.

        I tried

        dig +short -t SRV _ntp._udp.kbbn-7.com 0 100 123 pfsense.kbbn-7.com.

        with no success. What is the proper dig command to query pfsense's ntp server?

        I can successfully do this,

        root@idmserver1c etc]# chronyc sources
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* pfSense.kbbn-7.com            3   6   377    51    +32us[  +47us] +/-   81ms

        this

        root@idmserver1c etc]# timedatectl
               Local time: Mon 2023-04-03 12:51:42 MDT
           Universal time: Mon 2023-04-03 18:51:42 UTC
                 RTC time: Mon 2023-04-03 18:51:42
                Time zone: America/Denver (MDT, -0600)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

        this

        [root@idmserver1c etc]# dig +short idmserver1c.kbbn-7.com A
10.30.70.119

        this

        [root@idmserver1c etc]# dig +short -x 10.30.70.119
idmserver1c.kbbn-7.com.

        this

        [root@idmserver1c etc]# dig +dnssec @10.30.70.1 . SOA

; <<>> DiG 9.16.23-RH <<>> +dnssec @10.30.70.1 . SOA
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36495
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;.				IN	SOA

;; ANSWER SECTION:
.			86400	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2023040300 1800 900 604800 86400
.			86400	IN	RRSIG	SOA 8 0 86400 20230416050000 20230403040000 60955 . MDoZqJahx1oa9307RBAqg23F7CmwcOqMZMctGckkW9QftlFJ9eShJ6sE sObdt0I7H7IYw/7af0fE80/u2AHsB8xHzAAi6jgiL7qLxP79yhgxg9FB IJT1pj1ICju5iMU/QuGEzLecN/CXKyapcz8D2eCAeZyf5rVOk04vB7FP JiVpajzDurYpYQPjct8BdBofwdSl3F7VScnothzu+EzlSh9BHyFMZ4db yyC2NfCLGRE3ZBMaAcLXR2JQcYh4bN9sVvj3QYkvindOk6Z6aUTcofgh z5GdnDSGSv7Bh1JHdjYRZNimGKH4uFzJkgL5U9sH5WxOhE0JqSIdeCqd UmalsQ==

;; Query time: 86 msec
;; SERVER: 10.30.70.1#53(10.30.70.1)
;; WHEN: Mon Apr 03 13:00:17 MDT 2023
;; MSG SIZE  rcvd: 389

        but unable to "Perform a DNS service (SRV) record search for NTP servers in your environment" on ntp server on pfsense.

        johnpozJ 1 Reply Last reply Reply Quote 0
        • johnpozJ
          johnpoz LAYER 8 Global Moderator @nasheayahu
          last edited by

          @nasheayahu said in Rhel9: installing an idm server:

          Perform a DNS service (SRV) record search for NTP servers in your environment" on ntp server on pfsense.

          So you want to create a SRV record in unbound - is this what your asking? If so then create the record in the options box on unbound.. with the use of local-data:

          An intelligent man is sometimes forced to be drunk to spend time with his fools
          If you get confused: Listen to the Music Play
          Please don't Chat/PM me for help, unless mod related
          SG-4860 24.11 | Lab VMs 2.8, 24.11

          N 1 Reply Last reply Reply Quote 0
          • N
            nasheayahu @johnpoz
            last edited by nasheayahu

            hi @johnpoz, in the Custom options box, there is an entry by pfBlockerNG,

            server:include: /var/unbound/pfb_dnsbl.*conf

            do I make a separate entry as,

            server:include: /var/unbound/pfb_dnsbl.*conf

Server:
local-data: '_kerberos-master._tcp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.'
local-data: '_kerberos-master._udp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.'
local-data: '_kerberos._tcp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.'
local-data: '_kerberos._udp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.'
local-data: '_kerberos.kbbn-7.com. 3600 IN TXT "KBBN-7.COM"'
local-data: '_kerberos.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:tcp:idmserver.kbbn-7.com."'
local-data: '_kerberos.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:udp:idmserver.kbbn-7.com."'
local-data: '_kpasswd._tcp.kbbn-7.com. 3600 IN SRV 0 100 464 idmserver.kbbn-7.com.'
local-data: '_kpasswd._udp.kbbn-7.com. 3600 IN SRV 0 100 464 idmserver.kbbn-7.com.'
local-data: '_kpasswd.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:tcp:idmserver.kbbn-7.com."'
local-data: '_kpasswd.kbbn-7.com. 3600 IN URI 0 100 "krb5srv:m:udp:idmserver.kbbn-7.com."'
local-data: '_ldap._tcp.kbbn-7.com. 3600 IN SRV 0 100 389 idmserver.kbbn-7.com.'
local-data: 'ipa-ca.kbbn-7.com. 3600 IN A 10.30.70.106'

            or just add my additional records too? And is the format correct?

            johnpozJ 1 Reply Last reply Reply Quote 0
            • johnpozJ
              johnpoz LAYER 8 Global Moderator @nasheayahu
              last edited by

              @nasheayahu you don't need the extra server:

              so for example if I add

              local-data: '_kerberos-master._tcp.kbbn-7.com. 3600 IN SRV 0 100 88 idmserver.kbbn-7.com.'

              to mine..

              add.jpg

              Notice I use " vs '

              Then do a query

              query.jpg

              An intelligent man is sometimes forced to be drunk to spend time with his fools
              If you get confused: Listen to the Music Play
              Please don't Chat/PM me for help, unless mod related
              SG-4860 24.11 | Lab VMs 2.8, 24.11

              N 1 Reply Last reply Reply Quote 1
              • N
                nasheayahu @johnpoz
                last edited by nasheayahu

                Installing Identity Management
                1.4.1. How IdM uses chronyd for synchronization

                ..
                If you do not pass any NTP options to the IdM installation command, the installer searches for
                _ntp._udp DNS service (SRV) records that point to the NTP server in your network and configures
                chrony with that IP address. If you do not have any _ntp._udp SRV records, chronyd uses the
                configuration shipped with the chrony package.

                Where can I look to see if pfSense has the records for its NTP server? I'm using pfSense for my DHCP, DNS Resovler as the Forwarder from the IDM Server, and NTP for the IDM Domain clock sync.

                Network Topology:
                Network.jpg

                UPDATE:
                After further research, configuring chronyd on the IDM Server and some clients to sync with pfSense NTP Server, it appears good, pfSense NTP UI is all I need to make any adjustments and I don't need any SRV record look-ups, because the IDM will default to using chronyd configuration.

                I removed the pool setting, added the server directive in the chrony.conf to server 10.30.70.1 iburst which is the IP to pfSense LAN Gateway and add the pools there. This way I will just have a single configuration to deal with.

                My NTP Network Topology:
                Network IDM NTP.jpg

                1 Reply Last reply Reply Quote 0
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