What Could Cause Access Exceptions After Configuring an HTTPS Certificate for a LoadBalancer Ingress?
If you configure an HTTPS certificate for a LoadBalancer ingress, access may become abnormal if any of the following issues arise. To fix the problem, refer to the causes listed in the table.
|
Cause |
Symptom |
Solution |
|---|---|---|
|
The certificate has expired. |
The error similar to the following is displayed when the curl command is executed: SSL certificate problem: certificate has expired |
Replace the certificate in a timely manner. |
|
An unmatched HTTPS certificate chain is used by a client to verify the HTTPS certificate configured for the LoadBalancer ingress. |
The error similar to the following is displayed when the curl command is executed: SSL certificate problem: unable to get local issuer certificate |
Ensure that the HTTPS certificate chain on the client matches the certificate configured for the LoadBalancer ingress. |
|
No domain name is specified when a certificate is created. |
The error similar to the following is displayed when the curl command is executed: SSL: unable to obtain common name from peer certificate |
Specify a domain name when creating a certificate. |
|
The domain name to be accessed is different from the domain name of the HTTPS certificate. |
The error similar to the following is displayed when the curl command is executed: SSL: certificate subject name 'example.com' does not match target host name 'test.com' |
Configure a certificate that matches the domain name for the ingress. |
You can run the following command to check the certificate information, such as expiration time and domain name. ca.crt specifies the certificate path.
openssl x509 -in ca.crt -subject -noout -text
Updating a Certificate
- To update a TLS certificate, modify the secret where the certificate is imported to on CCE. The TLS certificate is imported to a secret first. CCE then automatically handles the certificate configurations on the ELB console and gives a name to the certificate (started with k8s_plb_default). This certificate, which is generated by CCE, cannot be modified or deleted from the ELB console.
- To update a certificate created on the ELB console, modify the certificate on the ELB console. There is no need to manually set up the cluster secret.
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