Linux Agent Fails To Start With exit-code 127

Products

• Carbon Black App Control

Issue/Introduction

• When attempting to manually start the Linux Agent an error is returned similar to:

  /etc/init.d/b9daemon: line 389: daemon: command not found
  b9daemon.service: Control process exited, code=exited status=127
  b9daemon.service: Failed with result 'exit-code'

• Checking the Agent service status, an error is returned similar to:

  ExecStop=/etc/init.d/b9daemon stop (code=exited, status=0/SUCCESS)
  ExecStart=/etc/init.d/b9daemon start (code=exited, status=127)

Environment

• Red Hat Linux: All Supported Versions
• Linux Agent: All Supported Versions

Cause

A required dependency, initscripts, is missing, misconfigured or otherwise corrupt.

Resolution

1. Check PATH to be sure /sbin is included

   echo $PATH
   
   Example output:
   /home/USR/.local/bin:/home/USR/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin

2. Verify initscripts is installed:

   dnf list installed initscripts

   1. If necessary, install initscripts using the command:

      sudo dnf install initscripts

   2. Refresh systemd to verify any changes take effect:

      sudo systemctl daemon-reload

   3. Attempt to start the Agent once more:

      sudo /opt/bit9/bin/b9cli --startup

3. Verify the functions file exists in /etc/init.d

   ls -ltr /etc/init.d/

   • The functions file is added during install of initscripts.
   • If no functions file exists, reinstallation of initscripts or assistance from the OS vendor may be required to investigate further.
4. Review systemd journal for errors relating to b9daemon

   sudo journalctl -xeu b9daemon.service

5. Attempt to start the Agent without systemd

   sudo /opt/bit9/bin/b9daemon DAEMON

   1. Use b9cli to check the Agent status

      /opt/bit9/bin/b9cli --status

   2. If the Agent returns output, this indicates an issue with the systemd configuration on the endpoint and further assistance from the OS vendor may be required.
   3. If the Agent fails to start, uninstall the Agent and complete a new install.

Additional Information

• Determine Linux Agent Package Dependencies
• Are legacy SysV init scripts still supported in RHEL 7 and higher?
• Each attempt to execute b9daemon should log in /srv/bit9/data/Logs/b9ServiceActivity.log