Hi All, I am accessing the F5 API from java, but I get the certificate error on the http request:Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested targetBut I have downloaded the certificate from the F5 portal and imported in the local java keystore.sudo keytool -importcert -alias f5_api domain -file f5_api_com.crt -keystore cacertsStill i get the above error. Please let me know I am missing anything. Thanks!

What cert are you using as a device cert? Is it a publicly signed cert? if not, it will need to be added to the java cert store. I recommend using a publicly signed wildcard cert for your domain if you have one already.

It looks like you may have imported the certificate into the trust store and not the issuer of the certificate into your trust store.From the screenshot above it looks like The issuer may be different from the certificate.

Can you provide the details of the device certificate you have used?It can be found under System ›› Certificate Management : Device Certificate Management : Device CertificateYou should be able to find the issuer cert in the device certificcate chain which can be found here: System ›› Certificate Management : Device Certificate Management : Device Certificate ChainFrom there you can export it and then import to your JAVA CA repo.

We have wildcard certs for our domains already installed on the F5s for traffic routing. We re-use those same certs for the device certs. All devices have the exact same wildcard cert installed. This means that hitting the UI gets the same publicly signed certificate as hitting traffic vips in that domain.This bypasses the need to add certs to the clients, as the public certs are already trusted.

Hi TimRiker Thanks for the reply, But I am not able to connect the management server (API request) using java. I can see it working if the http call goes through browser. But not through java.

F5 API access from java certificate error

Chris_Thuys
Altocumulus
Feb 23, 2023
It looks like you may have imported the certificate into the trust store and not the issuer of the certificate into your trust store.
From the screenshot above it looks like The issuer may be different from the certificate.
TimRiker
Cirrocumulus
Feb 22, 2023
We have wildcard certs for our domains already installed on the F5s for traffic routing. We re-use those same certs for the device certs. All devices have the exact same wildcard cert installed. This means that hitting the UI gets the same publicly signed certificate as hitting traffic vips in that domain.
This bypasses the need to add certs to the clients, as the public certs are already trusted.
- srinidhi12
  Cirrostratus
  Feb 22, 2023
  Hi TimRiker Thanks for the reply,
  But I am not able to connect the management server (API request) using java. I can see it working if the http call goes through browser. But not through java.
  - TimRiker
    Cirrocumulus
    Feb 22, 2023
    What cert are you using as a device cert? Is it a publicly signed cert? if not, it will need to be added to the java cert store. I recommend using a publicly signed wildcard cert for your domain if you have one already.
srinidhi12
Cirrostratus
Feb 23, 2023
TimRiker Chris_Thuys Thanks for the reply,
TimRiker I have downloaded the SSL certificate and imported in my java keystore. Do I need to use the Device certificate as well?
Chris_Thuys Also I am understanding your question, but can you help me with importing the issuer of the certificate. As I am confused in that process. Please let me know the steps if possible.
- Chris_Thuys
  Altocumulus
  Feb 23, 2023
  Can you provide the details of the device certificate you have used?
  It can be found under System ›› Certificate Management : Device Certificate Management : Device Certificate
  You should be able to find the issuer cert in the device certificcate chain which can be found here: System ›› Certificate Management : Device Certificate Management : Device Certificate Chain
  From there you can export it and then import to your JAVA CA repo.
  - srinidhi12
    Cirrostratus
    Feb 23, 2023
    I have downloaded the device certificate from the mentioned and imported inside the JAVA keystore.
    Still I get the same error.
    Please find the device certificate
    
    I dont find anything under device certificate chain
srinidhi12
Cirrostratus
Feb 23, 2023
can anyone please let me know the steps to be configured to access the API from java with the SSL certificate installation in jvm. As I am confused with the steps or not sure if I am missing anything.
The steps I followed:
Download the f5_api_com.crt from certificate management->Traffic certificate management ->SSL certificate ->f5_api_com.crt
Import it to my jdk using the below command:
sudo keytool -importcert -alias f5_api domain -file f5_api_com.crt -keystore cacerts
certificate is added successfully.
Restarted my system
Chris_Thuys
Altocumulus
Feb 24, 2023
Assuming you are actually trying to access the api on the F5 you have provided screen shots for then the certificate you require is the device certificate not the certificate in traffic certificate management.
Install the device certificate from System ›› Certificate Management : Device Certificate Management : Device Certificate into your java Keystore to trust the self signed certificate used by the F5 device irtself.
- srinidhi12
  Cirrostratus
  Feb 25, 2023
  Thanks for the explanation, is there any specific alias name which I need to specify in the command.
  keytool -import -noprompt -trustcacerts -alias http://www.example.com -file "C:\Path\to\www.example.com.cer" -keystore cacerts
- srinidhi12
  Cirrostratus
  Feb 27, 2023
  And after importing I get the below error:
  javax.net.ssl.SSLPeerUnverifiedException: Hostname 10.10.10.10 not verified:
  here 10.10.10.10 is the F5 Management IP
- srinidhi12
  Cirrostratus
  Feb 28, 2023
  Hi,
  I just found that I have changed the hostname from the cli and that is not updated in the device certificate, which is giving the "hostname not verified error" Please let me know how to update the hostname in the device certificate.
Chris_Thuys
Altocumulus
Mar 01, 2023
Try the following KB
https://my.f5.com/manage/s/article/K9114