Re: lloadd and cn=config
Am 11.12.23 um 18:10 schrieb Ondřej Kuzník: On Wed, Dec 06, 2023 at 08:11:52PM +0100, Stefan Kania wrote: Hi Ondrej, I restarted with a new test. Now I'm having 2 loadbalancer one is configured via cn=config and one over slapd.conf. Both are configured exactly the same. Same binduser, same ldap-server same everything. For my test I started tcpdump on the loadbalancer and on the two ldap-server. Starting the loadbalancer which is configured via slapd.conf I can see all the packages on both, the ldap-servers and the loadbalancer. Doing the same test with the loadbalancer configured via cn=config I see absolutely nothing, no package is send. Hi Stefan, thanks for the info, I believe I've tracked it down and filed ITS#10142, if you're able to test patches, can you give MR!663 a go? https://git.openldap.org/openldap/openldap/-/merge_requests/663 Thanks, Hi Ondrej, sorry, but I'm not a developer, I just use OpenLDAP. I'm always try to help if I can test something. I took a look at the merge-request but for me it only strange code ;-). I think I have to compile openldap and before that I have to,somehow, get the patch into the source. Right? For me it's interesting what is wrong and how did you fixed it. If you have new packages (best for me would be Debian) I can test it before the next release. Stefan -- Stefan Kania Landweg 13 25693 St. Michaelisdonn Signieren jeder E-Mail hilft Spam zu reduzieren und schützt Ihre Privatsphäre. Ein kostenfreies Zertifikat erhalten Sie unter https://www.dgn.de/dgncert/index.html smime.p7s Description: Kryptografische S/MIME-Signatur
Re: lloadd and cn=config
On Wed, Dec 06, 2023 at 08:11:52PM +0100, Stefan Kania wrote: > Hi Ondrej, > > I restarted with a new test. > Now I'm having 2 loadbalancer one is configured via cn=config and one over > slapd.conf. Both are configured exactly the same. Same binduser, same > ldap-server same everything. > For my test I started tcpdump on the loadbalancer and on the two > ldap-server. > > Starting the loadbalancer which is configured via slapd.conf I can see all > the packages on both, the ldap-servers and the loadbalancer. > > Doing the same test with the loadbalancer configured via cn=config I see > absolutely nothing, no package is send. Hi Stefan, thanks for the info, I believe I've tracked it down and filed ITS#10142, if you're able to test patches, can you give MR!663 a go? https://git.openldap.org/openldap/openldap/-/merge_requests/663 Thanks, -- Ondřej Kuzník Senior Software Engineer Symas Corporation http://www.symas.com Packaged, certified, and supported LDAP solutions powered by OpenLDAP
Re: lloadd and cn=config
Am 07.12.23 um 17:40 schrieb Quanah Gibson-Mount: My question was more, once you add the database config block, if you ldapsearch the cn=config database it generates, does it match what you get from slatpest conversion. Now I understand :-). so that's what I did now adding -- database config rootdn "cn=admin,cn=config" rootpw config -- to slapd.conf and start slapd with slapd.conf then I did: ldapsearch -x -D cn=admin,cn=config -w geheim -b cn=config -H ldap://loadbalancer01.example.net -LLL > slapd-conf.ldif Then: rm -rf /opt/symas/etc/openldap/slapd.d/* slapadd -n0 -F /opt/symas/etc/openldap/slapd.d/ -l slapd-conf.ldif chown -R openldap: /opt/symas/etc/openldap/slapd.d/ switch to start slapd via cn=config then: systemctl restart symas-openldap-server.service Slapd has started. But the behavior is the same. Same error message as before. --- ldapsearch -x -D uid=repl-user,ou=users,dc=example,dc=net -w geheim ldap_bind: Server is unavailable (52) additional info: no connections available --- Stefan smime.p7s Description: Kryptografische S/MIME-Signatur
Re: lloadd and cn=config
--On Thursday, December 7, 2023 5:23 PM +0100 Stefan Kania wrote: I added: -- database config rootdn "cn=admin,cn=config" rootpw config -- to the slapd.conf. After adding slapd is still working with slapd.conf then I converted the slapd.conf with: slaptest -F /opt/symas/etc/openldap/slapd.d -f /opt/symas/etc/openldap/slapd.conf My question was more, once you add the database config block, if you ldapsearch the cn=config database it generates, does it match what you get from slatpest conversion. --Quanah
Re: lloadd and cn=config
Am 06.12.23 um 22:12 schrieb Quanah Gibson-Mount: --On Wednesday, December 6, 2023 8:11 PM +0100 Stefan Kania wrote: Hi Ondrej, I restarted with a new test. Now I'm having 2 loadbalancer one is configured via cn=config and one over slapd.conf. Both are configured exactly the same. Same binduser, same ldap-server same everything. For my test I started tcpdump on the loadbalancer and on the two ldap-server. Out of curiosity - If you define a: database config section in slapd.conf, and then make it so you can connect to the config db and dump it via ldapsearch, does it match your cn=config database you're working from? or have the same issue if you use that dump as the configuration? I added: -- database config rootdn "cn=admin,cn=config" rootpw config -- to the slapd.conf. After adding slapd is still working with slapd.conf then I converted the slapd.conf with: slaptest -F /opt/symas/etc/openldap/slapd.d -f /opt/symas/etc/openldap/slapd.conf without any error. I can start slapd but: It's exactly the same. The slapd starts, I can see the listening ports with "ss -tlpn" But ldapsearch is still showing: ldapsearch -x -D uid=repl-user,ou=users,dc=example,dc=net -w geheim ldap_bind: Server is unavailable (52) additional info: no connections available These are exactly the same messages as before. Stefan --Quanah smime.p7s Description: Kryptografische S/MIME-Signatur
Re: lloadd and cn=config
--On Wednesday, December 6, 2023 8:11 PM +0100 Stefan Kania wrote: Hi Ondrej, I restarted with a new test. Now I'm having 2 loadbalancer one is configured via cn=config and one over slapd.conf. Both are configured exactly the same. Same binduser, same ldap-server same everything. For my test I started tcpdump on the loadbalancer and on the two ldap-server. Out of curiosity - If you define a: database config section in slapd.conf, and then make it so you can connect to the config db and dump it via ldapsearch, does it match your cn=config database you're working from? or have the same issue if you use that dump as the configuration? --Quanah
Re: lloadd and cn=config
Hi Ondrej,
I restarted with a new test.
Now I'm having 2 loadbalancer one is configured via cn=config and one
over slapd.conf. Both are configured exactly the same. Same binduser,
same ldap-server same everything.
For my test I started tcpdump on the loadbalancer and on the two
ldap-server.
Starting the loadbalancer which is configured via slapd.conf I can see
all the packages on both, the ldap-servers and the loadbalancer.
Doing the same test with the loadbalancer configured via cn=config I see
absolutely nothing, no package is send.
When I set the loglevel to any, I can see that slapd is reading the
configuration from cn=config, but I can't see any error. Slapd is
running but no connection to any of the ldap-server is established.
Next thing I did was starting the slapd over the commandline with strace
on both systems
strace /opt/symas/lib/slapd -f /opt/symas/etc/openldap/slapd.conf
2>start-mit-strace
and
strace /opt/symas/lib/slapd -F /opt/symas/etc/openldap/slapd.d
2>start-mit-strace
The result for the server with slapd.conf is showning:
---
connect(10, {sa_family=AF_INET6, sin6_port=htons(1389),
sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::", &sin6_addr),
sin6_scope_id=0}, 28) = 0
connect(10, {sa_family=AF_INET, sin_port=htons(1389),
sin_addr=inet_addr("0.0.0.0")}, 16) = 0
bind(10, {sa_family=AF_INET, sin_port=htons(1389),
sin_addr=inet_addr("0.0.0.0")}, 16) = 0
bind(11, {sa_family=AF_INET6, sin6_port=htons(1389),
sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::", &sin6_addr),
sin6_scope_id=0}, 28) = 0
...
connect(12, {sa_family=AF_INET6, sin6_port=htons(1636),
sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::", &sin6_addr),
sin6_scope_id=0}, 28) = 0
connect(12, {sa_family=AF_INET, sin_port=htons(1636),
sin_addr=inet_addr("0.0.0.0")}, 16) = 0
bind(12, {sa_family=AF_INET, sin_port=htons(1636),
sin_addr=inet_addr("0.0.0.0")}, 16) = 0
bind(13, {sa_family=AF_INET6, sin6_port=htons(1636),
sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::", &sin6_addr),
sin6_scope_id=0}, 28) = 0
---
The same search in the result on the loadbalancer configured via
cn=config is showing nothing.
I don't know where else I can search. It must be possible to configure
the loadbalancer via cn=config.
On both loadbalancer "ss -tlpn" is showing the port 389 636 1389 1636 as
listing.
Trying to connect with "telnet 1636" to both, only on the
loadbalancer configured via slapd.conf I can see packages arriving in
tcpdump.
There is NO firewall at all running on both systems!
Any idea?
Am 04.12.23 um 14:51 schrieb Stefan Kania:
Now I did a check with tcpdump. Starting tcpdump on both systems I see,
that the tcp connection is established. But now packages send when doing
a ldapsearch.
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Re: lloadd and cn=config
Am 04.12.23 um 16:19 schrieb Ondřej Kuzník:
I will say it again: lloadd does not open any connections in response to
client activity, they are established as part of its operation and until
you have at least one, requests will be rejected with 52 Unavailable.
I Know: Starting the loadbalancer service the bind user
(binddn=uid=lloadd,ou=users,dc=example,dc=net) will establish the
connection to the ldap-server the user who will connect from a client
will use these connection to "talk" to the ldap-server with it's own
credentials. I can follow this using slapd.conf.
Using cn=config (now with "conns" as loglevel) I see on the loadbalancer:
---
Dez 04 19:06:52 loadbalancer01 systemd[1]: Starting
symas-openldap-server.service - Symas OpenLDAP Server Daemon...
Dez 04 19:06:52 loadbalancer01 slapd[2102]: @(#) $OpenLDAP: slapd 2.6.6
(Aug 8 2023 21:23:03) $
openldap
Dez 04 19:06:52 loadbalancer01 slapd[2102]: slapd starting
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: added 4r listener=(nil)
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: added 7r
listener=0x562b0de0d550
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: added 8r
listener=0x562b0de0d640
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: added 9r
listener=0x562b0de0d790
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: added 10r
listener=0x562b0de0d970
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: added 11r
listener=0x562b0de0da60
Dez 04 19:06:52 loadbalancer01 systemd[1]: Started
symas-openldap-server.service - Symas OpenLDAP Server Daemon.
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=7
active_threads=0 tvp=zero
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=8
active_threads=0 tvp=zero
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=9
active_threads=0 tvp=zero
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=10
active_threads=0 tvp=zero
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=11
active_threads=0 tvp=zero
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: activity on 1 descriptor
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: activity on:
Dez 04 19:06:52 loadbalancer01 slapd[2102]:
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=7
active_threads=0 tvp=zero
Dez 04 19:06:52 loadbalancer01 slapd[2102]: daemon: epoll: listen=8
active_threads=0 tvp=zero
...
---
The last messages will repeat until I stop slapd.
On the ldap-server (also "conns" as loglevel) I see nothing at all.
If I look with "ss" on the loadbalancer I see:
---
root@loadbalancer01:~# ss -tln | tail -n +1
State Recv-Q Send-Q Local Address:Port Peer Address:PortProcess
LISTEN 0 1024 0.0.0.0:1389 0.0.0.0:*
LISTEN 0 2048 0.0.0.0:389 0.0.0.0:*
LISTEN 0 128 0.0.0.0:220.0.0.0:*
LISTEN 0 1024 0.0.0.0:1636 0.0.0.0:*
LISTEN 0 2048 0.0.0.0:636 0.0.0.0:*
---
Then I tried to read the config with slapcat and I got:
-
root@loadbalancer01:~# slapcat -n0
lload_open_listener: bind(3) failed errno=98 (Address already in use)
lload_open_listener: bind(3) failed errno=98 (Address already in use)
lload_open_listener: failed on ldap://:1389
olcBkLloadListen: value #0: could not open a listener for ldap://:1389
config error processing olcBackend={0}lload,cn=config: could not open a
listener for ldap://:1389
slapcat: bad configuration file!
-
But looking at my configuration I see:
-
olcBkLloadListen: ldap://:1389
olcBkLloadListen: ldaps://:1636
-
If I change the order of ldap and ldaps I get the same only with ldaps.
If I remove on line I get the message with the remaining protocol.
Btw I get all the same errors when I convert the slapd.conf with
slaptest and use the result to start the loadbalancer. So I can't find
an error here.
At the moment I don't know where to look next
Stefan
--
Stefan Kania
Landweg 13
25693 St. Michaelisdonn
Signieren jeder E-Mail hilft Spam zu reduzieren und schützt Ihre
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Re: lloadd and cn=config
On Mon, Dec 04, 2023 at 03:42:34PM +0100, Stefan Kania wrote: > Am 04.12.23 um 15:00 schrieb Ondřej Kuzník: >> Hi Stefan, >> are you trying to use the load balancer before it has had a chance to >> establish its own connections? > > Hi Ondrej, > > setting loglevel to "conns" on both, the ldap-servers and the loadbalancer > I'm getting no entry in the log on the two ldap-server but on the > loadbalancer I see: > --- > Dez 04 15:33:54 loadbalancer01 slapd[1519]: lload_listener: listen=14, new > connection fd=29 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: lload_connection_init: connection > connid=4 allocated for socket fd=29 peername=IP=192.168.56.24:50978 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: client_tls_handshake_cb: connid=4 > finished > Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: connection > connid=4 ready to read > Dez 04 15:33:54 loadbalancer01 slapd[1519]: operation_init: received a new > operation, bind request with msgid=1 for client connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: request_bind: connid=4, msgid=1 > no available connection found > Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_write_cb: considering > writing to live connid=4 what=0 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_write_cb: have > something to write to connection connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: handle_pdus: re-enabled read > event on connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: suspended > read event on connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: connection > connid=4 ready to read > Dez 04 15:33:54 loadbalancer01 slapd[1519]: operation_init: received a new > operation, unbind request with msgid=2 for client connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: handle_one_request: received > unbind, closing client connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: client_unlink: removing client > connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: suspended > read event on connid=4 > Dez 04 15:33:54 loadbalancer01 slapd[1519]: client_destroy: destroying client > connid=4 Are you saying there are really no messages at all between lloadd startup and your client connecting to it? I will say it again: lloadd does not open any connections in response to client activity, they are established as part of its operation and until you have at least one, requests will be rejected with 52 Unavailable. You want to figure out why no connections are being opened (successfully). Regards, -- Ondřej Kuzník Senior Software Engineer Symas Corporation http://www.symas.com Packaged, certified, and supported LDAP solutions powered by OpenLDAP
Re: lloadd and cn=config
Am 04.12.23 um 15:00 schrieb Ondřej Kuzník: Hi Stefan, are you trying to use the load balancer before it has had a chance to establish its own connections? Hi Ondrej, setting loglevel to "conns" on both, the ldap-servers and the loadbalancer I'm getting no entry in the log on the two ldap-server but on the loadbalancer I see: --- Dez 04 15:33:54 loadbalancer01 slapd[1519]: lload_listener: listen=14, new connection fd=29 Dez 04 15:33:54 loadbalancer01 slapd[1519]: lload_connection_init: connection connid=4 allocated for socket fd=29 peername=IP=192.168.56.24:50978 Dez 04 15:33:54 loadbalancer01 slapd[1519]: client_tls_handshake_cb: connid=4 finished Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: connection connid=4 ready to read Dez 04 15:33:54 loadbalancer01 slapd[1519]: operation_init: received a new operation, bind request with msgid=1 for client connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: request_bind: connid=4, msgid=1 no available connection found Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_write_cb: considering writing to live connid=4 what=0 Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_write_cb: have something to write to connection connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: handle_pdus: re-enabled read event on connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: suspended read event on connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: connection connid=4 ready to read Dez 04 15:33:54 loadbalancer01 slapd[1519]: operation_init: received a new operation, unbind request with msgid=2 for client connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: handle_one_request: received unbind, closing client connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: client_unlink: removing client connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: connection_read_cb: suspended read event on connid=4 Dez 04 15:33:54 loadbalancer01 slapd[1519]: client_destroy: destroying client connid=4 --- Doing the same with loadbalancer configured via slapd.conf I see: on the ldap-server Dez 04 15:38:47 provider01 slapd[505]: daemon: activity on 1 descriptor Dez 04 15:38:47 provider01 slapd[505]: daemon: activity on: Dez 04 15:38:47 provider01 slapd[505]: 21r Dez 04 15:38:47 provider01 slapd[505]: Dez 04 15:38:47 provider01 slapd[505]: daemon: read active on 21 Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=7 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=8 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=9 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=10 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=11 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: conn=1201 op=0 BIND dn="uid=repl-user,ou=users,dc=example,dc=net" method=128 Dez 04 15:38:47 provider01 slapd[505]: daemon: activity on 1 descriptor Dez 04 15:38:47 provider01 slapd[505]: daemon: activity on: Dez 04 15:38:47 provider01 slapd[505]: Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=7 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=8 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=9 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=10 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: daemon: epoll: listen=11 active_threads=0 tvp=zero Dez 04 15:38:47 provider01 slapd[505]: conn=1201 op=0 BIND dn="uid=repl-user,ou=users,dc=example,dc=net" mech=SIMPLE bind_ssf=0 ssf=256 Dez 04 15:38:47 provider01 slapd[505]: conn=1201 op=0 RESULT tag=97 err=0 qtime=0.17 etime=0.013379 text= -- and -on the loadbalancer Dez 04 15:38:47 loadbalancer01 slapd[1623]: operation_init: received a new operation, bind request with msgid=1 for client connid=30 Dez 04 15:38:47 loadbalancer01 slapd[1623]: handle_bind_response: received response for bind request msgid=1 by client connid=30, result=0 Dez 04 15:38:47 loadbalancer01 slapd[1623]: forward_final_response: connid=4 msgid=1 finishing up with a request for client connid=30 Dez 04 15:38:47 loadbalancer01 slapd[1623]: operation_init: received a new operation, search request with msgid=2 for client connid=30 Dez 04 15:38:47 loadbalancer01 slapd[1623]: forward_final_response: connid=1 msgid=2 finishing up with a request for client connid=30 Dez 04 15:38:47 loadbalancer01 slapd[1623]: operation_init: received a new operation, unbind request with msgid=3 for client connid=30 Dez 04 15:38:47 loadbalancer01 slapd[1623]: handle_one_request: received unbind, closing client connid=30 - -- Stefan Kania Landweg 13 25693 St. Michaelisdonn Signieren jeder E-Mail hilft Spam zu
Re: lloadd and cn=config
On Mon, Dec 04, 2023 at 02:34:57PM +0100, Stefan Kania wrote: > Hello Ondrej, > > if I get: > -- > root@loadbalancer01:~# ldapsearch -x -D > uid=repl-user,ou=users,dc=example,dc=net -W > Enter LDAP Password: > ldap_bind: Server is unavailable (52) > additional info: no connections available > -- > > The log on the loadbalancer is showing: > - > Dez 04 14:19:33 loadbalancer01 slapd[883]: operation_init: received a new > operation, bind request with msgid=1 for client connid=1 > Dez 04 14:19:33 loadbalancer01 slapd[883]: request_bind: connid=1, msgid=1 > no available connection found > Dez 04 14:19:33 loadbalancer01 slapd[883]: operation_init: received a new > operation, unbind request with msgid=2 for client connid=1 > Dez 04 14:19:33 loadbalancer01 slapd[883]: handle_one_request: received > unbind, closing client connid=1 > - > > On the ldap-server I see, nothing in the log: > > Next thing I did was ldapsearch with "-d 3" and I got: > [...] > > i first tough it could be some TLS problem but as you see TLS is ok. > > Now I checked what I see on the both ldap-servers when restarting slapd, and > I see nothing. So no connection is established for the proxy authentication > on slapd start. > > If I switch to slapd.conf it works fine on both ldap-servers. > - > Dez 04 14:27:20 provider02 slapd[501]: conn=1047 fd=21 ACCEPT from > IP=192.168.56.24:59358 (IP=0.0.0.0:636) > Dez 04 14:27:20 provider02 slapd[501]: conn=1047 fd=21 TLS established > tls_ssf=256 ssf=256 tls_proto=TLSv1.3 tls_cipher=TLS_AES_256_GCM_SHA384 > Dez 04 14:27:20 provider02 slapd[501]: conn=1047 op=0 BIND > dn="uid=lloadd,ou=users,dc=example,dc=net" method=128 > Dez 04 14:27:20 provider02 slapd[501]: conn=1047 op=0 BIND > dn="uid=lloadd,ou=users,dc=example,dc=net" mech=SIMPLE bind_ssf=0 ssf=256 > - > There must be something wrong with the bind configuration. Hi Stefan, are you trying to use the load balancer before it has had a chance to establish its own connections? Can you provide logs from before you start interacting with lloadd with your client to see whether it's even had a chance to establish them? Loglevel at least 'conns'. lloadd's connection management is not reactive, it has to establish (some) connections to upstreams before anything can be proxied. Until any useable connections exist, every operation that cannot be processed locally will be rejected. Thanks, -- Ondřej Kuzník Senior Software Engineer Symas Corporation http://www.symas.com Packaged, certified, and supported LDAP solutions powered by OpenLDAP
Re: lloadd and cn=config
Now I did a check with tcpdump. Starting tcpdump on both systems I see,
that the tcp connection is established. But now packages send when doing
a ldapsearch.
Am 04.12.23 um 11:52 schrieb Ondřej Kuzník:
On Mon, Dec 04, 2023 at 11:40:29AM +0100, Stefan Kania wrote:
Hi to all,
when I setup the loadbalancer lloadd via slapd.conf everything is working
fine. Here my slapd.conf
[...]
As soon as I change to cn=config with the following configuration:
[...]
-
The slapd is stating and with "ss -tlpn" I see port 1636 and 1389 as listen
(next to 636 and 389) I git the following errormessage when I try to contect
the ldap-server via the loadbalancer.
---
ldap_bind: Server is unavailable (52)
additional info: no connections available
---
Did I miss sommthing? I also try to translate the working slapd.conf with
slaptest, but the result is the same.
Hi Stefan,
the configurations certainly look equivalent, but no connections to
provider1/2 are being established ("no connections available" to use),
can you see any errors in the logs that would show why that is?
Regards,
--
Stefan Kania
Landweg 13
25693 St. Michaelisdonn
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Re: lloadd and cn=config
Hello Ondrej,
if I get:
--
root@loadbalancer01:~# ldapsearch -x -D
uid=repl-user,ou=users,dc=example,dc=net -W
Enter LDAP Password:
ldap_bind: Server is unavailable (52)
additional info: no connections available
--
The log on the loadbalancer is showing:
-
Dez 04 14:19:33 loadbalancer01 slapd[883]: operation_init: received a
new operation, bind request with msgid=1 for client connid=1
Dez 04 14:19:33 loadbalancer01 slapd[883]: request_bind: connid=1,
msgid=1 no available connection found
Dez 04 14:19:33 loadbalancer01 slapd[883]: operation_init: received a
new operation, unbind request with msgid=2 for client connid=1
Dez 04 14:19:33 loadbalancer01 slapd[883]: handle_one_request: received
unbind, closing client connid=1
-
On the ldap-server I see, nothing in the log:
Next thing I did was ldapsearch with "-d 3" and I got:
-
TLS trace: SSL_connect:SSL negotiation finished successfully
TLS trace: SSL_connect:SSL negotiation finished successfully
TLS trace: SSL_connect:SSLv3/TLS read server session ticket
tls_read: want=5, got=5
: 17 03 03 00 3f ?
tls_read: want=63, got=63
: 15 70 78 36 2f bb aa 06 f3 34 d7 dc c7 40 c7 f1
.px6/4...@..
0010: a0 74 0c 31 20 5f 50 15 6a e9 33 55 10 8a 6d a1 .t.1
_P.j.3U..m.
0020: 29 ad 3a ba a8 1e d7 e8 72 e1 3d 17 5f c3 fe d0
).:.r.=._...
0030: 4a 94 08 e3 b5 cc 56 03 ac a1 f4 76 e9 30 31
J.Vv.01
ldap_read: want=8, got=8
: 30 84 00 00 00 28 02 010(..
ldap_read: want=38, got=38
: 01 61 84 00 00 00 1f 0a 01 34 04 00 04 18 6e 6f
.a...4no
0010: 20 63 6f 6e 6e 65 63 74 69 6f 6e 73 20 61 76 61
connections ava
0020: 69 6c 61 62 6c 65 ilable
ber_get_next: tag 0x30 len 40 contents:
ldap_find_request_by_msgid: msgid 1, lr 0x562310953bc0 lr->lr_refcnt = 1
read1msg: ld 0x56231090e7f0 msgid 1 message type bind
ber_scanf fmt ({eAA) ber:
read1msg: ld 0x56231090e7f0 0 new referrals
read1msg: mark request completed, ld 0x56231090e7f0 msgid 1
request done: ld 0x56231090e7f0 msgid 1
res_errno: 52, res_error: , res_matched: <>
ldap_return_request: lrx 0x562310953bc0, lr 0x562310953bc0
ldap_return_request: lrx->lr_msgid 1, lrx->lr_refcnt is now 0, lr is
still present
ldap_free_request (origid 1, msgid 1)
ldap_free_request_int: lr 0x562310953bc0 msgid 1 removed
ldap_do_free_request: asked to free lr 0x562310953bc0 msgid 1 refcnt 0
ldap_parse_result
ber_scanf fmt ({iAA) ber:
ber_scanf fmt (}) ber:
ldap_msgfree
ldap_err2string
ldap_bind: Server is unavailable (52)
additional info: no connections available
ldap_free_connection 1 1
ldap_send_unbind
ber_flush2: 7 bytes to sd 3
tls_write: want=29, written=29
: 17 03 03 00 18 e8 81 d9 3d 8a 61 51 f0 8d 3d c8
=.aQ..=.
0010: 93 9a c7 ef aa 3a 65 15 a5 d7 6f 97 66
.:e...o.f
ldap_write: want=7, written=7
: 30 05 02 01 02 42 00 0B.
tls_write: want=24, written=24
: 17 03 03 00 13 92 92 4f 5a b9 79 a9 b3 2b 3e 38
...OZ.y..+>8
0010: 53 a2 03 7f 8f cf 85 76S..v
TLS trace: SSL3 alert write:warning:close notify
ldap_free_connection: actually freed
-
i first tough it could be some TLS problem but as you see TLS is ok.
Now I checked what I see on the both ldap-servers when restarting slapd,
and I see nothing. So no connection is established for the proxy
authentication on slapd start.
If I switch to slapd.conf it works fine on both ldap-servers.
-
Dez 04 14:27:20 provider02 slapd[501]: conn=1047 fd=21 ACCEPT from
IP=192.168.56.24:59358 (IP=0.0.0.0:636)
Dez 04 14:27:20 provider02 slapd[501]: conn=1047 fd=21 TLS established
tls_ssf=256 ssf=256 tls_proto=TLSv1.3 tls_cipher=TLS_AES_256_GCM_SHA384
Dez 04 14:27:20 provider02 slapd[501]: conn=1047 op=0 BIND
dn="uid=lloadd,ou=users,dc=example,dc=net" method=128
Dez 04 14:27:20 provider02 slapd[501]: conn=1047 op=0 BIND
dn="uid=lloadd,ou=users,dc=example,dc=net" mech=SIMPLE bind_ssf=0 ssf=256
-
There must be something wrong with the bind configuration.
Stefan
Am 04.12.23 um 11:52 schrieb Ondřej Kuzník:
On Mon, Dec 04, 2023 at 11:40:29AM +0100, Stefan Kania wrote:
Hi to all,
when I setup the loadbalancer lloadd via slapd.conf everything is working
fine. Here my slapd.conf
[...]
As soon as I change to cn=config with the following configuration:
[...]
-
The slapd is stating and with "ss -tlpn" I see port 1636 and 1389 as listen
(next to 636 and 389) I git the following errormessage when I try to contect
the ldap-server via the loadbalancer.
---
ldap_bind: Server is unavailable (52)
additional info: no connections available
---
Did I miss sommthing? I also try to translate the working slapd.conf with
slaptest, but the
Re: lloadd and cn=config
On Mon, Dec 04, 2023 at 11:40:29AM +0100, Stefan Kania wrote:
> Hi to all,
>
> when I setup the loadbalancer lloadd via slapd.conf everything is working
> fine. Here my slapd.conf
> [...]
>
> As soon as I change to cn=config with the following configuration:
> [...]
>
> -
> The slapd is stating and with "ss -tlpn" I see port 1636 and 1389 as listen
> (next to 636 and 389) I git the following errormessage when I try to contect
> the ldap-server via the loadbalancer.
>
> ---
> ldap_bind: Server is unavailable (52)
> additional info: no connections available
>
> ---
>
> Did I miss sommthing? I also try to translate the working slapd.conf with
> slaptest, but the result is the same.
Hi Stefan,
the configurations certainly look equivalent, but no connections to
provider1/2 are being established ("no connections available" to use),
can you see any errors in the logs that would show why that is?
Regards,
--
Ondřej Kuzník
Senior Software Engineer
Symas Corporation http://www.symas.com
Packaged, certified, and supported LDAP solutions powered by OpenLDAP
lloadd and cn=config
Hi to all,
when I setup the loadbalancer lloadd via slapd.conf everything is
working fine. Here my slapd.conf
-
TLSCertificateFile /opt/symas/etc/openldap/example-net-cert.pem
TLSCertificateKeyFile /opt/symas/etc/openldap/example-net-key.pem
TLSCACertificateFile /opt/symas/etc/openldap/cacert.pem
pidfile /var/symas/run/slapd.pid
argsfile/var/symas/run/slapd.args
loglevel256
modulepath /opt/symas/lib/openldap
moduleload lloadd.la
backend lload
listen "ldap://:1389 ldaps://:1636"
feature proxyauthz
TLSShareSlapdCTX true
bindconf
bindmethod=simple
network-timeout=5
binddn=uid=lloadd,ou=users,dc=example,dc=net
credentials=geheim
tls_cacert="/opt/symas/etc/openldap/cacert.pem"
tls_cert="/opt/symas/etc/openldap/example-net-cert.pem"
tls_key="/opt/symas/etc/openldap/example-net-key.pem"
tier roundrobin
backend-server
uri=ldaps://provider01.example.net
retry=5000
max-pending-ops=50
conn-max-pending=10
numconns=10
bindconns=5
backend-server
uri=ldaps://provider02.example.net
retry=5000
max-pending-ops=50
conn-max-pending=10
numconns=10
bindconns=5
databasemonitor
rootdn cn=monitor
rootpw geheim
-
As soon as I change to cn=config with the following configuration:
-
dn: cn=config
objectClass: olcGlobal
cn: config
olcLogLevel: stats
olcPidFile: /var/symas/run/slapd.pid
olcArgsFile: /var/symas/run/slapd.args
olcToolThreads: 1
olcTLSCACertificateFile: /opt/symas/etc/openldap/cacert.pem
olcTLSCertificateFile: /opt/symas/etc/openldap/example-net-cert.pem
olcTLSCertificateKeyFile: /opt/symas/etc/openldap/example-net-key.pem
dn: cn=schema,cn=config
objectClass: olcSchemaConfig
cn: schema
dn: cn=module{0},cn=config
objectClass: olcModuleList
cn: module{0}
olcModulePath: /opt/symas/lib/openldap
olcModuleLoad: lloadd.la
olcModuleLoad: argon2.la
dn: olcDatabase={-1}frontend,cn=config
objectClass: olcDatabaseConfig
objectClass: olcFrontendConfig
olcDatabase: {-1}frontend
olcSizeLimit: 500
olcAccess: {0}to *
by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
manage
by * break
olcAccess: {1}to dn="" by * read
olcAccess: {2}to dn.base="cn=subschema" by * read
olcPasswordHash: {ARGON2}
dn: olcDatabase={0}config,cn=config
objectClass: olcDatabaseConfig
olcDatabase: {0}config
olcRootDN: cn=admin,cn=config
#olcRootPW: geheim
olcRootPW:
{ARGON2}$argon2i$v=19$m=4096,t=3,p=1$cXdlcnJ0enV6dWlvMTIz$G/l0lynf7ygdz0tG+E7S1fBibsFs/L80AUSisiGl/v4
olcAccess: {0}to *
by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
manage
dn: olcBackend={0}lload,cn=config
objectClass: olcBackendConfig
objectClass: olcBkLloadConfig
olcBackend: {0}lload
olcBkLloadBindconf: bindmethod=simple
timeout=0
network-timeout=5
binddn="uid=lloadd,ou=users,dc=example,dc=net"
credentials="geheim"
keepalive=0:0:0
tcp-user-timeout=0
tls_cert="/opt/symas/etc/openldap/example-net-cert.pem"
tls_key="/opt/symas/etc/openldap/example-net-key.pem"
tls_cacert="/opt/symas/etc/openldap/cacert.pem"
olcBkLloadIOThreads: 1
olcBkLloadListen: ldap://:1389
olcBkLloadListen: ldaps://:1636
olcBkLloadSockbufMaxClient: 16777215
olcBkLloadSockbufMaxUpstream: 16777215
olcBkLloadMaxPDUPerCycle: 10
olcBkLloadIOTimeout: 1
olcBkLloadFeature: proxyauthz
olcBkLloadTLSCRLCheck: none
olcBkLloadVerifyClient: never
olcBkLloadTLSProtocolMin: 0.0
olcBkLloadTLSShareSlapdCTX: TRUE
olcBkLloadClientMaxPending: 0
olcBkLloadWriteCoherence: 0
dn: cn={0}tier 1,olcBackend={0}lload,cn=config
objectClass: olcBkLloadTierConfig
cn: {0}tier 1
olcBkLloadTierType: roundrobin
dn: cn={0}server 1,cn={0}tier 1,olcBackend={0}lload,cn=config
objectClass: olcBkLloadBackendConfig
cn: {0}server 1
olcBkLloadBackendUri: ldaps://provider01.example.net
olcBkLloadNumconns: 10
olcBkLloadBindconns: 5
olcBkLloadRetry: 5000
olcBkLloadMaxPendingOps: 50
olcBkLloadMaxPendingConns: 10
olcBkLloadStartTLS: critical
olcBkLloadWeight: 1
dn: cn={1}server 2,cn={0}tier 1,olcBackend={0}lload,cn=config
objectClass: olcBkLloadBackendConfig
cn: {1}server 2
olcBkLloadBackendUri: ldaps://provider02.example.net
olcBkLloadNumconns: 10
olcBkLloadBindconns: 5
olcBkLloadRetry: 5000
olcBkLloadMaxPendingOps: 50
olcBkLloadMaxPendingConns: 10
olcBkLloadWeight: 1
dn: olcDatabase={1}monitor,cn=config
objectClass: olcDatabaseConfig
olcDatabase: {1}monitor
olcAccess: {0}to dn.subtree="cn=monitor"
by dn.exact=cn=admin,cn=config read
-
The slapd is stating and with "ss -tlpn" I see port 1636 and 1389 as
listen (next to 636 and 389) I git the following errormessage when I try
to contect the ldap-server via the loadbalancer.
---
ldap_bind: Server is unavailable (52)
additional info: no connections available
---
Did I miss sommthing? I also try to translate the working slapd.c
