NetWorker: When the postgres daemon is not running, the NMC login prompts with error "Unable to connect to database"

Summary: NetWorker: When the postgres daemon is not running, the NMC login prompts with error "Unable to connect to database"

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Symptoms

Accessing the NetWorker Management Console (NMC) returns: "Unable to connect to database"

The postgres daemon is not listed for the NMC GST service:

Linux: ps -ef | grep "gst\|lgtogst"
Windows (PowerShell): Get-WmiObject Win32_Process | Where-Object {$_.Name -match "gstd.exe|postgres.exe"} | Select-Object Name, ProcessID, CommandLine 

The render of the gstd.raw file notes

gstd NSR warning: failed to get db connection to fetch server configuration
 

NetWorker: How to use nsr_render_log to render .raw log files

Linux: /opt/lgtonmc/logs/gstd.raw
Windows: <INSTALL_DRIVE>:\Program Files\EMC NetWorker\Management\GST\logs.gstd.raw

Cause

The postgres data base is in an inconsistent state.

Resolution

  1. Stop the NMC daemons with:

Linux: /etc/init.d/gst stop or systemctl stop gst
Windows: net stop gstd

  1. Ensure the daemons stop with:

Linux: ps -ef | grep "gst\|lgtogst"
Windows (PowerShell): Get-WmiObject Win32_Process | Where-Object {$_.Name -match "gstd.exe|postgres.exe"} | Select-Object Name, ProcessID, CommandLine

NOTE: If the NMC server is also a NetWorker Web User Interface (NWUI) server, a postgres process is also listed for the NWUI database. The paths shown for these processes include "nwui."
  1. Terminate any NMC processes which did not shut down:

Linux: kill -9 PID
Windows: taskkill /F /PID PID

  1. Start the NMC daemons with:

Linux: /etc/init.d/gst start or systemctl start gst
Windows: net start gstd

  1. Ensure all daemons start with:

Linux: ps -ef | grep "gst\|lgtogst"
Windows (PowerShell): Get-WmiObject Win32_Process | Where-Object {$_.Name -match "gstd.exe|postgres.exe"} | Select-Object Name, ProcessID, CommandLine

 

Monitor the NMC gstd.raw and postgres logs for any errors:

NetWorker: How to use nsr_render_log to render .raw log files

Linux: 

    • /opt/lgtonmc/logs/gstd.raw
    • /nsr/nmc/nmcdb/pgdata/pg_log/postgresql-DAY.log

Windows:

    • <INSTALL_DRIVE>:\Program Files\EMC NetWorker\Management\GST\logs.gstd.raw
    • <INSTALL_DRIVE>:\Program Files\EMC NetWorker\Management\nmcdb\pgdata\pg_log\postgresql-DAY.log

Additional Information

NetWorker - How to Recover the NetWorker Management Console database

Affected Products

NetWorker
Article Properties
Article Number: 000031351
Article Type: Solution
Last Modified: 16 May 2025
Version:  5
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