PowerFlex 3.X The Presentation Server UI Unlinks From The Cluster
Summary: The Presentation Server UI unlinks from the cluster.
Symptoms
The Presentation Server (mgmt-server) scaleio.log reports it is unlinking from the MDM.
/mgmt-server/logs/scaleio.log:2023-08-27 04:21:42,656 [LiveQueryQueueThreadV2|INFO |com.emc.vxflexos.webui.backend.connection.mdm.MdmLinkService.lambda$tryUnlink$38] Starting unlink from MDM The PMDM events and trc logs report that it could not connect to the LDAP service.
Primary MDM events
2023-08-27 04:21:34.611000:0016332:MDM_CLI_COMMAND_RECEIVED INFO Command logout received, User: 'N/A'. [7529811] 2023-08-27 04:21:34.611000:0016333:CLI_COMMAND_FAILED WARNING Command logout was not successful. Error code: Invalid session. Please login and try again. 2023-08-27 04:21:34.619000:0016334:MDM_CLI_COMMAND_RECEIVED INFO Command login received, User: 'flexro@sio.lab'. [7529812] Login banner read and approved manually. Originating source IP: 14.14.14.13 2023-08-27 04:21:42.638000:0016335:CLI_COMMAND_FAILED WARNING Command login was not successful. Error code: Could not establish the connection with LDAP service. [7529812]
Primary MDM trc log
2023/08/27 04:21:42.637849 71d00001676f:mosLdap_Bind:00130: After ldap_sasl_bind - rc: -1, msg-id: -1 2023/08/27 04:21:42.637857 71d00001676f:mosLdap_PrintError:00193: Error in: ldap_sasl_bind, rc: Can't contact LDAP server (-1) 2023/08/27 04:21:42.637860 71d00001676f:mosLdap_PrintError:00197: Additional information: (null) 2023/08/27 04:21:42.637862 71d00001676f:mosLdap_Bind:00133: Failed to start async operation for username: flexro@sio.lab 2023/08/27 04:21:42.638047 71d00001676f:mosLdap_SearchUserInDomainGroupsIntr:00581: User "flexro@sio.lab" was found in 0 groups - search-user: flexro, bind-user: flexro@sio.lab, rc: LDAP_SESSION_INITIALIZATION_FAIL, time: 8020 ms 2023/08/27 04:21:42.638117 7f09c58c0db0:ldapAuthMgr_Authenticate:00742: LDAP authentication search for user: flexro@sio.lab in domain: ldaps://ad.sio.lab didn't find any matches (LDAP_SESSION_INITIALIZATION_FAIL) 2023/08/27 04:21:42.638236 7f09c58c0db0:mosEventLog_PostInternal:00609: New event added. Message: "Command login was not successful. Error code: Could not establish the connection with LDAP service. [7529812]". Additional info: "" Severity: Warning
The Presentation Server UI prompts to link a PowerFlex Cluster.
Impact
Unable to login as the end-user must link the Presentation Server to a PowerFlex Cluster.
Cause
Impact
Unable to login as the end-user must link the Presentation Server to a PowerFlex Cluster.
Root Cause
In this scenario, the end-user is using LDAP authentication.
The Presentation Server has an 8-hour token from when a user logs in. After the 8-hour token expires, a subsequent login attempt is made. However, if this attempt fails to establish a connection with the LDAP service, it can lead to the Presentation Server becoming unlinked from the cluster.
Resolution
Workaround
Re-link the Presentation Server to the PowerFlex cluster using the web UI.
Impacted Versions
PowerFlex versions 3.5.x and 3.6.x
Fixed In Version
TBD