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    CARP/HA IPSec on Backup Node - connection not found?

    Scheduled Pinned Locked Moved HA/CARP/VIPs
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    • S
      sepp_huber
      last edited by sepp_huber

      Hi,

      we have a CARP/HA Setup with 2 nodes.
      On the primary node all switches for synching are checked.
      We have 3 IPSec configurations, the first one is deactivated and the second and third are active.
      I can see all three connections in the user interface of both nodes... in sync.
      When a failoiver to the backup node happens, the second IPSec connection does not come up.
      In the logfiles there is an entry:

      Oct 29 15:59:58	charon		14[CFG] received stroke: initiate 'con2000'
Oct 29 15:59:58	charon		05[CFG] no IKE_SA named 'con2000' found

      For me it looks like the configuration 'con2000' does not exists on the second node...
      Any ideas?

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      • DerelictD
        Derelict LAYER 8 Netgate
        last edited by

        The first thing I would try is a simple edit/save of that connection on the primary. Be sure there are no XMLRPC errors there afterward.

        If that doesn't work you might try a simple edit/save on the secondary but that should not be necessary.

        If you want, run ipsec statusall con2000 on the secondary before you do anything and see what it says. Safe for Diagnostics > Command Prompt.

        Chattanooga, Tennessee, USA
        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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        • S
          sepp_huber
          last edited by sepp_huber

          @derelict said in CARP/HA IPSec on Backup Node - connection not found?:

          ipsec statusall con2000

          Hi,

          now, I have disabled all other connections for debugging.
          There are no XML RPC errors after saving a connection.

          Oct 30 10:30:37	php-fpm	88966	/rc.filter_synchronize: Filter sync successfully completed with http://192.168.XXX.XXX:80.
Oct 30 10:30:37	check_reload_status		Reloading filter
Oct 30 10:30:37	check_reload_status		Reloading filter
Oct 30 10:30:37	php-fpm	88966	/rc.filter_synchronize: XMLRPC sync successfully completed with http://192.168.XXX.XXX:80.
Oct 30 10:30:36	php-fpm	88966	/rc.filter_synchronize: Beginning XMLRPC sync to http://192.168.XXX.XXX:80.

          If we switch to the secondary with "CARP Maintenance Mode" I have to connect manually with the UI, otherwise there is no connection attempt.
          "ipsec status all" shows that the connection is up on the primary, on the secondary it shows "no connection":

          ...
Connections:
Security Associations (0 up, 0 connecting):
  no match

          It seems that for the secondary this connection does not exist... but in the UI the connection is correct displayed.
          Where can I check the synced ipsec configuration files via shell/command prompt?

          Thx

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          • DerelictD
            Derelict LAYER 8 Netgate
            last edited by

            Look in /var/etc/ipsec/ipsec.conf

            You might want to force a config sync in Status > Filter Reload on the primary (Yes, that's a strange place for that button.)

            If we switch to the secondary with "CARP Maintenance Mode" I have to connect manually with the UI, otherwise there is no connection attempt.
            "ipsec status all" shows that the connection is up on the primary, on the secondary it shows "no connection":

            Not sure what you're saying here. There is no automatic change to the other node's webui. I generally connect to both nodes on their interface addresses when working on a cluster, not the CARP VIP. Your connection state should be on both but the nginx process on one doesn't have a session on the other.

            Chattanooga, Tennessee, USA
            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
            Do Not Chat For Help! NO_WAN_EGRESS(TM)

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            • S
              sepp_huber
              last edited by sepp_huber

              Hi.

              thanks for your hint - I have checked the files on both nodes:
              They differ totally! "conn2000" is missing.

              Master:

              ls -l
total 16
-rw-r--r--   1 root  wheel  1299 Nov  6 14:18 ipsec.conf

              Backup:

              ls -l
total 16
-rw-r--r--   1 root  wheel  732 Oct 16 13:35 ipsec.conf

              If I hit the "Force config sync" on the primary or if anything in the configuration of the primary is changed, the file is not synced or updated to the second node. It just changes on the primary.
              There are no sync errors:

              XMLRPC sync successfully completed with XXXX

              With UI I mean when I look into the User Interface of the IPSec configuration (VPN->IPSec), the configurations here are identical on both nodes! ... but not in the real IPSec config files (/var/etc/ipsec/ipsec.conf). This means the pfsense XML configuration of the second is not in sync with the ipsec config file.
              Btw, we still use 2.3.5-RELEASE-p2.

              Usually we use OpenVPN and we bind all our VPNs on the CARP-VIP (Server and Clients). They are only up on the primary and are down on the backup. They switch with the CARP-VIP... if the VIP is on the secondary all the connections come up automatically.
              Does this not work with IPSec connections?

              Thx for your help!

              1 Reply Last reply Reply Quote 0
              • DerelictD
                Derelict LAYER 8 Netgate
                last edited by Derelict

                Then I would edit/save the con2000 VPN connection on the primary again. There must have been a syncing issue at one time.

                If that does not work I would delete it and recreate it on the primary.

                Or backup and restore just the IPSEC section on the primary.

                2.3.5 is EOL. As is the underlying FreeBSD 10.3. You'd do well to get to 2.4.4

                Chattanooga, Tennessee, USA
                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                • S
                  sepp_huber
                  last edited by sepp_huber

                  Hi,

                  after backup and restore the IPSec config there where no sync errors...
                  But after a rolling restart of both nodes the ipsec configuration is synced again.
                  => solved
                  I am wondering why a reboot helped... it is not a Windows system ;-)

                  Thanks for your hint of eol 2.3.5... I have looked here:
                  https://www.netgate.com/docs/pfsense/releases/index.html#current-upcoming-supported-releases
                  It is still listed as supported in the documentation.

                  DerelictD 2 Replies Last reply Reply Quote 0
                  • DerelictD
                    Derelict LAYER 8 Netgate @sepp_huber
                    last edited by

                    @sepp_huber said in CARP/HA IPSec on Backup Node - connection not found?:

                    It is still listed as supported in the documentation.

                    Not for long. Thanks. ;)

                    Chattanooga, Tennessee, USA
                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                    • DerelictD
                      Derelict LAYER 8 Netgate @sepp_huber
                      last edited by

                      @sepp_huber said in CARP/HA IPSec on Backup Node - connection not found?:

                      I am wondering why a reboot helped... it is not a Windows system ;-)

                      A restart completely rebuilds all configuration files from the config.xml file.

                      Chattanooga, Tennessee, USA
                      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                      Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                      • S
                        sepp_huber
                        last edited by

                        @derelict said in CARP/HA IPSec on Backup Node - connection not found?:

                        A restart completely rebuilds all configuration files from the config.xml file.

                        OK...
                        After changing something on the primary it is still not synced to the secondary.
                        Anyway, I can live with this workaround => reboot of the secondary after changing the ipsec configuration.

                        I will update to 2.4.X in the next weeks.

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                        • DerelictD
                          Derelict LAYER 8 Netgate
                          last edited by

                          I would continue to work the problem. That is certainly not normal.

                          Is IPsec checked in the XMLRPC sync settings on the primary?

                          Chattanooga, Tennessee, USA
                          A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                          DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                          Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                          • S
                            sepp_huber
                            last edited by

                            As already stated in my inital post here... yes everything in the sync settings is checked AND there are no sync errors in the logs. Is there a debugging/logging feature for the XMLRPC sync?

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                            • DerelictD
                              Derelict LAYER 8 Netgate
                              last edited by

                              The system logs tell you what it is complaining about.

                              Chattanooga, Tennessee, USA
                              A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                              DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                              Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                              • S
                                sepp_huber
                                last edited by

                                No errors on master

                                Nov 12 10:52:22	php-fpm		/rc.filter_synchronize: Filter sync successfully completed with http://192.168.XXX.XXX:80.
Nov 12 10:52:21	php-fpm		/rc.filter_synchronize: XMLRPC sync successfully completed with http://192.168.XXX.XXX:80.
Nov 12 10:52:21	php-fpm		/rc.filter_synchronize: Beginning XMLRPC sync to http://192.168.XXX.XXX:80.

                                Filter reload sync output extract on master

                                ...
Pre-caching IPSec Port...
Creating filter rule IPSec Port ...
Creating filter rules IPSec Port ...
Setting up pass/block rules
Setting up pass/block rules IPSec Port
Creating rule IPSec Port
Pre-caching IPSec Port...
Creating filter rule IPSec Port ...
Creating filter rules IPSec Port ...
Setting up pass/block rules
Setting up pass/block rules IPSec Port
Creating rule IPSec Port
...
Signaling CARP reload signal...
Syncing CARP data to http://192.168.XXX.XXX
XMLRPC sync successfully completed with http://192.168.XXX.XXX:80

                                But on the backup I found:

                                Nov 12 10:57:06	php-fpm	39865	/xmlrpc.php: The command '/usr/sbin/pw groupadd -n 'admins' -g '2000' -M '0' 2>&1' returned exit code '65', the output was 'pw: group name `admins' already exists'
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                                • S
                                  sepp_huber
                                  last edited by

                                  Hi,

                                  after upgrading to 2.4.4, the synchronization still does not work.
                                  The ipsec file on the backup node is outdated.
                                  The message "/xmlrpc.php: The command '/usr/sbin/pw groupadd -n 'admins'..." does not appear anymore on the backup node.

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                                  • DerelictD
                                    Derelict LAYER 8 Netgate
                                    last edited by

                                    I have no idea what the issue is there. Never appeared on any system I have been involved with before. XMLRPC generally works or it doesn't. It isn't selective as to what configs it syncs or what it doesn't.

                                    Chattanooga, Tennessee, USA
                                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                                    • S
                                      sepp_huber
                                      last edited by

                                      I think the XMLRPCSync is working, there are no errors.
                                      All changes are visible in the ipsec user interface of the second node and if I make a "diff" of the configuration-backup XML of both nodes... all ipsec changes are included in the configuration of the second node.
                                      There must be an additional step after the XMLRPCSync which transfers the changes to "/var/etc/ipsec/ipsec.conf" and that fails or is not executed...
                                      Because after a reboot the file is "in-sync" with the configuration.

                                      Is it possible to change the debuglevel somewhere or add log output to the php source code?

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