Make sure the hostname configured in UCSM matches the hostname present in certificate and are valid.ģ. The identify field in cert should be the " hostname "of the LDAP server. Make sure the trust-point was configured correctly.Ģ. UCSM LDAP client uses the configured trust-points (Certificate Authority (CA) certificates) while establishing SSL connection.ġ. LDAP authentication is working fine without Secure Socket Layer (SSL) but fails when SSL option is enabled. Problem scenario #4 - LDAP Authentication works but not with SSL enabled NOTE: Disconnecting the mgmt interface would NOT affect any data plane traffic. Login via UCSM using local account and create auth-domain for remote authentication (ex LDAP) group. Execute following commands to change the native authentication scope securityĥ. Connect to the console of the primary FIģ. Disconnect the mgmt interface cable of primary FI ( show cluster state would indicate which is acting as Primary )Ģ. User cannot login or has read-only access to UCSM as remote user when " Native Authentication " was changed to remote authentication mechanism ( LDAP etc )Īs UCSM fallsback to local authentication for console access when it cannot reach remote authentication server, we can follow below steps to recover it.ġ. Problem scenario #4 - Cannot log in with 'Remote Authentication' It can also be verified with " test aaa " command from NX-OS shell. When remote-user logs-in and user was given read-only access, In that case verify the user group membership details in LDAP/AD.įor example, we can use ADSIEDIT utility for MS Active Directory. If no roles were retrieved during the LDAP login process,remote-user is either allowed with default-role ( read only access ) or denied access ( no-login ) to login to UCSM, based on the remote-login policy. LDAP user can login but has read-only privileges even though ldap-group maps are correctly configured in UCSM. Problem scenario #3 - User has read-only privileges The maximum username length can be 32 chars which includes the domain name. NOTE: Domain name is case sensitive and should match the domain-name configured in UCSM.
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* From Linux / MAC machine ssh -l ucs-\\ When establishing SSH session to FI as LDAP user, UCSM requires " ucs- " to be prepended before LDAP domain-name LDAP user can login via UCSM GUI but cannot open SSH session to FI. Problem scenario #2 - Can log into GUI, cannot log into SSH Verify if Domain Name Service (DNS) returns correct IP address to UCS for LDAP server hostname and make sure that LDAP traffic is not blocked between these two devices.
![remote utilities server address book location remote utilities server address book location](https://www.remoteutilities.com/images/help/sync-server-15.png)
Investigate Internet Protocol (IP) network connectivity if UCSM cannot ping LDAP server or open telnet session to LDAP server. Verify network connectivity between LDAP server and Fabric Interconnect (FI) management interface by Internet Control Message Protocol (ICMP) ping and establishing telnet connection from local-mgmt context ucs# connect local (nxos)# test aaa server ldap īind failed for : Can't contact LDAP server User receives "Error authenticating to server" while testing LDAP authentication. This section provides information on diagnosing LDAP authentication problems.Ĭannot login as LDAP user via both UCSM Graphical User Interface (GUI) and CLI
![remote utilities server address book location remote utilities server address book location](https://www.remoteutilities.com/images/tutorials/import-connections-71.png)
In this case, UCSM tests the authentication against specific server and can fail if there is no filter configured for the specified LDAP server. NOTE 2: The LDAP server IP or FQDN must match a configured LDAP provider. NOTE 1: string will be displayed on the terminal. Validate specific LDAP server configuration ucs(nxos)# test aaa server ldap The following command goes through list of all configured LDAP servers based on their configured order. Validate LDAP group specific configuration. 'test aaa' command is available only from NX-OS CLI interface.ġ.
![remote utilities server address book location remote utilities server address book location](https://www.remoteutilities.com/images/help/server-ab-7.png)
![remote utilities server address book location remote utilities server address book location](https://www.tecmint.com/wp-content/uploads/2018/03/Remote-Access-Plus.jpeg)
Test the LDAP authentication using NX-OS command. UCSM always fails back to local authentication if all the servers in given auth-domain failed to respond during login attempt (not applicable for test aaa command ). Always use local realm for 'console authentication', In case the user is locked out from using 'native authentication', admin would still be able to access it from console.ģ. Create additional authentication domains instead of changing "Native Authenitcation " realmĢ. Ucs(nxos)# show ldap-server groups LDAP configuration best practicesġ. Make sure UCSM has deployed the configuration successfully by checking the Finite State Machine (FSM) status and it shows completed at 100%.įrom UCSM Command Line Interface (CLI) context ucs # scope securityįrom Nexus Operating System (NX-OS) CLI context ucs # scope security Sample Active Directory (AD) Configuration Verify UCSM LDAP configuration This document provides information on validating the Lightweight Directory Access Protocol (LDAP) configuration on the Unified Computing System Manager (UCSM) and steps to investigate LDAP authentication failure issues.