Bug ID 921625: The certs extend function does not work for GTM/DNS sync group

Last Modified: Aug 05, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP GTM(all modules)

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 16.0.0

Opened: Jun 28, 2020
Severity: 3-Major

Symptoms

When GTM/DNS systems in the same sync group receive the error 'SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca', these systems cannot automatically connect to BIG-IP devices with which that GTM/DNS device has not already exchanged a SSL cert. As part of normal functionality, when one GTM/DNS tries to connect to a BIG-IP server and receives 'unknown ca' SSL error, if its peer GTM/DNS has already built a connection with that BIG-IP server, then the second GTM/DNS system should also be able to connect to that BIG-IP server automatically. But it cannot because of this issue. The problem exists only when the GTM/DNS device has not exchanged a cert with the BIG-IP server object, and there are two or more certs in /config/httpd/conf/ssl.crt/server.crt on that GTM/DNS device. You might see messages similar to the following: -- iqmgmt_ssl_connect: SSL error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca. -- err gtmd[28112]: 011ae0fa:3: iqmgmt_ssl_connect: SSL error: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca (336151576). -- notice gtmd[28112]: 011ae03d:5: Probe to 10.10.0.3: buffer = <direct><![CDATA[<clientcert><ip>10.10.0.10</ip><target_ip>10.10.0.6</target_ip><cert>....

Impact

Certain GTM/DNS systems in the sync group cannot automatically connect to BIG-IP devices as expected. You must run additional bigip_add commands on those GTM/DNS systems in the GTM/DNS sync group to add the BIG-IP server.

Conditions

-- /config/httpd/conf/ssl.crt/server.crt file with two or more certs on the requesting GTM/DNS device. -- Configuration is as follows: 1. GTMDNS1 and GTMDNS2 are in a same GTM/DNS sync group. 2. GTMDNS1 has a self-authorized CA cert. 3. You add a BIG-IP server that is is reachable but with which GTMDNS1 has not exchanged SSL certs.

Workaround

Run bigip_add on each GTM/DNS server to add the configured BIG-IP servers.

Fix Information

None

Behavior Change