Linux client server was unable to connect to the master server. Error code 8510

Problem

Linux client server is unable to connect to the master server and the nbcertcmd returns an error code 8510.

Error Message

nbcertcmd command fails with below errors:

# nbcertcmd -getCAcertificate
nbcertcmd: The -getCACertificate operation failed for server abc.server.com
EXIT STATUS 8510: Web service certificate verification failed

# nbcertcmd -getCertificate -force
nbcertcmd: The -getCertificate operation failed for server abc.server.com
EXIT STATUS 8510: Web service certificate verification failed

Cause

http proxy is enabled:

$ env | grep -i http
http_proxy=http://1.2.3.4:8080
https_proxy=https://1.2.3.4:8080

nbcert log snippets:

NBClientCURL::getCATypeToUse: Unable to set cURL TLS params, as couldn't load CertMapInfo.
getCertMapInfo FAILED with [8765] error code.
NBClientCURL::performCurlOperation: Failed to perform operation: SSL peer certificate or SSH remote key was not OK
mapCurlPeerFailedVerification: Invalid Server CertInfo
NBClientCURL::Get: API failed response , NOT caching
curlSendRequest: failed to perform curl request for URI :netbackup/security/properties retval :8510
curl_getsecurityconfig: Failed to send request for getting security configuration: 8510
nbcertcmd: Request to get external ca usage mode failed with error code : 8510
nbcertcmd: EXIT STATUS 8510: Web service certificate verification failed
CVssApi::~CVssApi: Calling VssCleanUp

Solution

• Consult with the operating system administrator to disable the http proxy.

After disabling the http proxy, nbcertcmd command will fetch the certificates successfully.