The agent is not starting and there are no logs

Problem

The infrastructure agent is not starting, and logs are not created.

Solution

Here are some troubleshooting options for non-root users if the infrastructure agent is not starting and there are no logs:

To see if requiretty is causing logging issues:

  1. In /var/log/messages or /var/log/syslog, look for the message ​sudo: sorry, you must have a tty to run sudo .

    When using old Linux versions, sometimes the nri-agent user fails to execute a service because it does not have any TTY attached.

  2. If you find this message, edit your /etc/sudoers file with the visudo command and comment or remove the following line: Defaults requiretty
  3. Save and exit the file.
  4. Restart the newrelic-infra service.

Check the agent's permission to open log_file. It's possible that the log file you are using was created when the agent was running as root, and now the nri-agent user does not have permissions to write it.

To solve this, try one of these options:

  • Change the owner of the log file.
  • Change the log_file entry in the /etc/newrelic-infra.yml configuration file. Our installation scripts create the /var/log/newrelic-infra/ folder for that purpose, so we recommend the following value:

    log_file: /var/log/newrelic-infra/newrelic-infra.log

For more help

If you need more help, check out these support and learning resources: