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NetWorker Management Console (NMC) authentication fails with an error indicating that the hostname of the NetWorker Authentication Service cannot be resolved. The login window displays messages similar to: An error occurred while validating user credentials. Verify that NetWorker Authentication Service is running. Could not resolve host: node.local Server Message: Make sure that server is running The NetWorker Web User Interface (NWUI) or nsrlogin authentication completes successfully.
In the NMC server's gstd.conf file, the authentication server name is written as "node.local" or another unresolvable address.Linux: /opt/lgtonmc/etc/gstd.confWindows (default): C:\Program Files\EMC NetWorker\Management\GST\etc\gstd.conf [root@nsr bin]# cat /opt/lgtonmc/etc/gstd.conf { int http_svc_port = 9000; int clnt_svc_port = 9001; int db_svc_port = 5432; int snmp_trapd_enable = 1; string module_dir = "/opt/lgtonmc/mod"; list pkg_web_dirmap = { string alias = "/LGTOnmc"; string path = "/opt/lgtonmc/web"; }; string pkg_jar_files = "/LGTOnmc/java/gst.jar", "/LGTOnmc/java/gwt.jar", "/LGTOnmc/java/gwt_res.jar", "/LGTOnmc/java/comtsk.jar", "/LGTOnmc/java/postgresql-42.7.3.jar", "/LGTOnmc/java/jaxp.jar", "/LGTOnmc/java/jcchart.jar", "/LGTOnmc/java/jcfield.jar", "/LGTOnmc/java/jcpagelayout.jar", "/LGTOnmc/java/forms.jar", "/LGTOnmc/java/looks.jar", "/LGTOnmc/java/antlr.jar", "/LGTOnmc/java/y.jar", "/LGTOnmc/java/ysvg.jar", "/LGTOnmc/java/batik.jar", "/LGTOnmc/java/jide-common.jar", "/LGTOnmc/java/jide-components.jar", "/LGTOnmc/java/jide-dock.jar", "/LGTOnmc/java/ddomain.jar", "/LGTOnmc/java/ddomain_res.jar", "/LGTOnmc/java/json-simple-1.1.1.jar", "/LGTOnmc/java/gconsole.jar", "/LGTOnmc/java/gconsole_res.jar", "/LGTOnmc/java/nwadmin.jar", "/LGTOnmc/java/nwadmin_res.jar", "/LGTOnmc/java/nwadmin_old.jar", "/LGTOnmc/java/fsra.jar", "/LGTOnmc/java/fsra_res.jar", "/LGTOnmc/java/db2ra.jar", "/LGTOnmc/java/db2ra_res.jar", "/LGTOnmc/java/ifmxra.jar", "/LGTOnmc/java/ifmxra_res.jar", "/LGTOnmc/java/nmlra.jar", "/LGTOnmc/java/nmlra_res.jar", "/LGTOnmc/java/nmmexchra.jar", "/LGTOnmc/java/nmmexchra_res.jar", "/LGTOnmc/java/nmmhypervra.jar", "/LGTOnmc/java/nmmhypervra_res.jar", "/LGTOnmc/java/nmmspra.jar", "/LGTOnmc/java/nmmspra_res.jar", "/LGTOnmc/java/nmsqlra.jar", "/LGTOnmc/java/nmsqlra_res.jar", "/LGTOnmc/java/fdiff.jar", "/LGTOnmc/java/nwora.jar", "/LGTOnmc/java/nwora_res.jar", "/LGTOnmc/java/sapra.jar", "/LGTOnmc/java/sapra_res.jar", "/LGTOnmc/java/sybra.jar", "/LGTOnmc/java/sybra_res.jar", "/LGTOnmc/java/hanara.jar", "/LGTOnmc/java/hanara_res.jar", "/LGTOnmc/java/mysqlra.jar", "/LGTOnmc/java/mysqlra_res.jar"; string web_server_user = "nsrnmc"; string web_server_group = "nsrnmc"; string gst_postgres_user = "nsrnmc"; string nsr_nmc_user = "nsrnmc"; string authsvc_hostname = "node.local"; int authsvc_port = 9090; string current_db_dir = "/nsr/nmc/nmcdb"; string pkg_lang_packs = "ja"; string pkg_langjar_files = "/LGTOnmc/java/gwt_res_ja.jar", "/LGTOnmc/java/gconsole_res_ja.jar", "/LGTOnmc/java/nwadmin_res_ja.jar", "/LGTOnmc/java/ddomain_res_ja.jar"; }; [root@nsr bin]# The issue is caused by an incorrect or unresolved authentication server hostname configured in NMC. As a result, NMC was unable to communicate with the NetWorker Authentication Service and failed during user credential validation.
From an elevated prompt on the NMC server, run the following commands. Stop the NMC Server service: Linux: systemctl stop gstWindows: net stop gstd Update the NMC authentication server configuration with the correct authentication hostname and port by running the below command: Linux: /opt/lgtonmc/bin/gstauthcfg -ct -h <authentication_hostname> -p <port> Example: [root@nsr bin]# /opt/lgtonmc/bin/gstauthcfg -ct -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. [root@nsr bin]# Windows (default installation path shown, adjust accordingly): cd "C:\Program Files\EMC NetWorker\Management\GST\bin" .\gstauthcfg.exe -ct -h <authentication_hostname> -p <port> Example: PS C:\Users\Administrator> cd "C:\Program Files\EMC NetWorker\Management\GST\bin" PS C:\Program Files\EMC NetWorker\Management\GST\bin> .\gstauthcfg.exe -ct -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. PS C:\Program Files\EMC NetWorker\Management\GST\bin> Start the NMC service: Linux: systemctl start gstWindows: net start gstd Reattempt NMC login.
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