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CIM monitoring applications fail to authenticate to an ESXi host after several days of use (2043464)

Symptoms

  • Monitoring applications which connect directly to the ESXi Common Information Model (CIM) system work initially, but start receiving authentication errors after a period of few days.
  • The ESXi host does not allow connections from monitoring tools. 
  • In the \var\log\syslog.log file, you see errors similar to:

    2013-01-12T10:48:32Z openwsmand: pam_per_user: create_subrequest_handle(): creating new subrequest (user="<application_user_name>", service="system-auth-generic")
    2013-01-12T10:48:32Z openwsmand: PAM unable to dlopen(/lib/security/$ISA/pam_unix.so): libcrypt.so.1: cannot map zero-fill pages: No space left on device
    2013-01-12T10:48:32Z openwsmand: PAM adding faulty module: /lib/security/$ISA/pam_unix.so
    2013-01-12T10:48:33Z openwsmand: pam_per_user: create_subrequest_handle(): doing map lookup for user "<application_user_name>"
    2013-01-12T10:48:33Z openwsmand: pam_per_user: create_subrequest_handle(): creating new subrequest (user="<application_user_name>", service="system-auth-generic")
    2013-01-12T10:48:33Z openwsmand: PAM unable to dlopen(/lib/security/$ISA/pam_unix.so): libcrypt.so.1: failed to map segment from shared object: No space left on device
    2013-01-12T10:48:33Z openwsmand: PAM adding faulty module: /lib/security/$ISA/pam_unix.so

    Note:     application_user_name     in the log output is the username with which this software is configured to authenticate with.

Resolution

This is a known issue in ESXi 5.x and is currently under investigation.

To workaround this issue, restart the wsman service using this command:

#/etc/init.d/wsman restart

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