NMC: Verify NetWorker Authentication Service is Running

Summary: NetWorker Management Console (NMC) authentication fails, reporting "An error occurred while validating user credentials. Verify NetWorker Authentication Service is Running [Failed to connect to server:9090; No Error]" ...

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Symptoms

The following error appears when attempting to access the NetWorker Management Console (NMC):

NMC Login Error

"An error occurred while validating user credentials. Verify NetWorker Authentication Service is Running [Failed to connect to server:9090; No Error]"
 

Cause

When the NMC server software is installed, a single NetWorker authentication hostname and service port (default 9090) are defined.

Resolution

Prerequisites:

Validate that the NetWorker authentication (authc) service is running, there are no port communication issues, and authentication is functioning:

  • The Authentication Service is running on the NetWorker server:
nsrports -t AUTHC_SERVERNAME -p 9090

Example:

[root@nsr ~]# nsrports -t nsr.amer.lan -p 9090
Forward lookup for nsr.amer.lan
Query time:              0.000 sec
Canonical name (CNAME):  nsr.amer.lan
Address (A):             192.168.9.150
Connect to port 9090:    Succeeded (0.001 sec)

Reverse lookup for 192.168.9.150
Query time:              0.000 sec
Name:                    nsr.amer.lan
  • Authentication on the NetWorker authentication (authc) server is successful:
nsrlogin -u Administrator
If successful: 
nsrlogout
Example: 
[admin@nsr ~]$ nsrlogin -u Administrator
130136:nsrlogin: Please enter password:
Authentication succeeded
[admin@nsr ~]$ nsrlogout
  • The NetWorker Management Console (NMC) server can connect to port 9090 on the NetWorker authentication (authc) server:
Linux: 
curl -v NSR_AUTHC:9090
Example: 
[root@nsr ~]# curl -v nsr.amer.lan:9090
*   Trying 192.168.9.150:9090...
* Connected to nsr.amer.lan (192.168.9.150) port 9090 (#0)
> GET / HTTP/1.1
> Host: nsr.amer.lan:9090
> User-Agent: curl/7.76.1
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 400
< Content-Type: text/plain;charset=UTF-8
< Connection: close
<
Bad Request
This combination of host and port requires TLS.
* Closing connection 0
Windows (PowerShell): 
tnc NSR_AUTHCSERVER -port 9090

Example:

PS C:\Users\administrator.AMER> tnc nsr.amer.lan -port 9090

ComputerName     : nsr.amer.lan
RemoteAddress    : 192.168.9.150
RemotePort       : 9090
InterfaceAlias   : Ethernet0
SourceAddress    : 192.168.9.122
TcpTestSucceeded : True
NOTE: If all the above checks succeed, proceed with the article. If the above steps present a service or communication issue, these must be resolved before proceeding.

Procedure:

  1. Open an elevated prompt on the NetWorker Management (NMC) server.
  2. Stop the NMC server gstd process:
Linux: 
systemctl stop gst
Windows: 
net stop gstd
  1. Use the gstauthcfg command from the command prompt to change the NetWorker Authentication Service host used by the NMC server.
Linux: 
/opt/lgtonmc/bin/gstauthcfg -c -t -h NSR_AUTHCSERVER -p 9090
Example: 
[root@nsr ~]# /opt/lgtonmc/bin/gstauthcfg -c -t -h nsr.amer.lan -p 9090
121816:gstauthcfg: Authentication server on nsr.amer.lan is online.
121817:gstauthcfg: Configuration updated successfully.
Windows: 
"[INSTALL DRIVE]:\Program Files\EMC NetWorker\Management\GST\bin\gstauthcfg.exe" -c -t -h NSR_AUTHCSERVER -p 9090

Example:

C:\Users\administrator.AMER>"C:\Program Files\EMC NetWorker\Management\GST\bin\gstauthcfg.exe" -c -t -h nsr.amer.lan -p 9090
121816:gstauthcfg: Authentication server on nsr.amer.lan is online.
140643:gstauthcfg: Restart NMC server for the changes to take effect.
121817:gstauthcfg: Configuration updated successfully.
  1. Validate that the NMC server's gstd.conf reflects the correct authsvc_hostname and authsvc_port:
Linux: /opt/lgtonmc/etc/gstd.conf
Windows: [INSTALL DRIVE]:\Program Files\EMC NetWorker\Management\GST\etc\gstd.conf
  1. Start the EMC gstd process:
Linux: 
systemctl start gst
Windows: 
net start gstd
  1. When managing multiple NetWorker servers from a single NetWorker Management Console (NMC), establish trust and permissions between the NetWorker servers and the Authentication server.
nsrauthtrust -H NSR_AUTHCSERVER -P 9090
nsraddadmin -H NSR_AUTHCSERVER -P 9090
Example: 
C:\Users\administrator.AMER>nsrauthtrust -H nsr.amer.lan -P 9090

C:\Users\administrator.AMER>nsraddadmin -H nsr.amer.lan -P 9090
134751:nsraddadmin: Added role 'cn=Administrators,cn=Groups,dc=nsr,dc=amer,dc=lan' to the 'Application Administrators' user group.
134751:nsraddadmin: Added role 'cn=Administrators,cn=Groups,dc=nsr,dc=amer,dc=lan' to the 'Security Administrators' user group.
134751:nsraddadmin: Added role 'cn=Users,cn=Groups,dc=nsr,dc=amer,dc=lan' to the 'Users' user group.

Additional Information

Attempt to log in to NMC fails with error: "An error occurred while validating user credentials. Verify that NetWorker Authentication Service is running"

Affected Products

NetWorker, NetWorker Management Console
Article Properties
Article Number: 000034546
Article Type: Solution
Last Modified: 14 Mar 2025
Version:  4
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