when the let's encrypt certificates were installed, did you run ipa-cacert-manage install on one of the nodes + ipa-certupdate on all the IPA machines? It's important to run ipa-certupdate on all the server/replicas/clients in order to install the CA everywhere.


On Sat, Jun 12, 2021 at 2:19 AM Chris Moody via FreeIPA-users <freeipa-users@lists.fedorahosted.org> wrote:
Hello folks.

Hopefully I'm just missing something face-palm level obvious, but I am running into some trouble when interfacing with my CA functionality on an IPA server cluster.  My attempts at scouring all my saved prior-comms from the mailing-list as well as several search-engines are not enchanting me with much clue.

It appears that my need for the LetsEncrypt certs for the user-facing Web-UI and LDAPs components are causing IPA to dis-trust itself.

4-node cluster - Ubuntu19.10
(all nodes currently fully updated/patched via the official Ubuntu repos)
ipa --version
VERSION: 4.8.1, API_VERSION: 2.233
running letsencrypt certificates successfully for HTTPs & LDAPs connectivity

These 4-nodes are all happily running and replicating betwixt each other.  LDAPs is functioning great and many linux systems are able to all join as freeipa-clients.  Users and groups are replicating and being used elegantly for many LDAP-based authentication/authorization needs.

Overall, for these nodes, life is good.

Where I'm running into trouble is in finally wanting to leverage certificate issuance on a per-user basis.  End goal is integrating things like yubikeys, user-cert auth, and so on.

In the UI, when I enter a user's account and select Actions->New Certificate, I am able to successfully issue the couple prompted 'certutil' commands to generate the user's CSR.  I then paste in the contents of the CSR and hit 'Issue' and run into the following error:
IPA Error 907: NetworkError
cannot connect to 'https://REDACTED-1.ipa.REDACTED.com:443/ca/rest/account/login': [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:2508)

As I then start digging into cli-mode to attempt to understand where things are unhappy, I run into similar troubles with the server attempting to talk to itself and not being very happy about it.

chris@REDACTED-1:~$ ipa ca-find
1 CA matched
  Name: ipa
  Description: IPA CA
  Authority ID: 8acca54b-64d7-44bf-b8f7-59316213cfb6
  Subject DN: CN=Certificate Authority,O=IPA.REDACTED.COM
  Issuer DN: CN=Certificate Authority,O=IPA.REDACTED.COM
Number of entries returned 1
chris@REDACTED-1:~$ ipa ca-show
Name: ipa
ipa: ERROR: cannot connect to 'https://REDACTED-1.ipa.REDACTED.com:443/ca/rest/account/login': [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:2508)


Verifying with 'openssl s_client' returns the valid and non-expired LE cert-chain.


chris@REDACTED-1:~$ openssl s_client REDACTED-1.ipa.REDACTED.com:443
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = R3
verify return:1
depth=0 CN = REDACTED-1.ipa.REDACTED.com
verify return:1
Certificate chain
 0 s:CN = REDACTED-1.ipa.REDACTED.com
   i:C = US, O = Let's Encrypt, CN = R3
 1 s:C = US, O = Let's Encrypt, CN = R3
   i:O = Digital Signature Trust Co., CN = DST Root CA X3
SSL handshake has read 3046 bytes and written 413 bytes
Verification: OK
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Server public key is 2048 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 0 (ok)

Can anyone please hit me with some clue-bat as to where I can read to understand how to get IPA to love itself?  I'm suspecting it's likely some certificate inclusion/exception that I need to add so that API calls and the ipa command itself will actually respect the LE cert-chain?

Any hints would be greatly appreciated.


Node-Nine, Inc.
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