Managing the Linux NMP

NOTE: As of Jan 31, 2021, only Monitoring Points that support TLS1.2 will be able to access APM-Public. Because the Linux NMP does not support TLS1.2, it will no longer be able to access APM-Public.

The APM-Private release due in Q1 2021 will also support the ability to block TLS1.0 and TLS 1.1 connections, so plans should be made to migrate away from the Linux NMP in these cases as well.

Existing Linux NMPs can be replaced with Container-based Monitoring Points.

Please contact AppNeta Support if you require assistance.

Install the Linux NMP

See Native Monitoring Point Setup - Linux.

Configure Linux NMP to use a proxy server

To configure the NMP to use your proxy server:

  1. Find /opt/pathview/config/seq.config.sample.
  2. Save a copy and rename it seq.config.
  3. Edit seq.config.
  4. Uncomment the proxy config lines and fill in your proxy details:
    • Proxy Address - the IP address of the proxy server.
    • Proxy Port - the port the proxy server is listening on.
    • Proxy Username - a valid user name on the proxy server (if authentication/authorization is required).
      • Only basic and digest authentication protocols are supported. NTLM and Kerberos are not supported.
    • Proxy Password - the password for the username specified (if authentication/authorization is required).
  5. Save your changes.
  6. Restart the NMP (as root user):
    1. Find the PID of the NMP process: netseq-linux.
      • Enter ps -aux.
    2. Kill the NMP.
      • Enter kill <PID>.
    3. Restart the NMP.
      • Enter /opt/pathview/netseq-linux -b.

Upgrade Linux NMP software

AppNeta recommends keeping your Enterprise Monitoring Point (EMP) software up to date to take advantage of the latest features and bug fixes. You will see the warning symbol 50x50_trans.png appear at various places in APM (including the Manage Monitoring Points page) when a Monitoring Point is no longer running the latest software version. You can configure APM to have a Monitoring Point upgraded automatically or you can upgrade it manually at any time. Note that the upgrade process can result in a gap of up to 15 minutes of monitoring history.

Configure upgrade automation

APM provides flexibility in scheduling Monitoring Point software upgrades to conform to your maintenance program. There are three upgrade automation settings:

  • Manual - Upgrades are to be performed manually (no automation).
  • Managed - Upgrades are to be performed automatically when new software is released. This enables you to have the latest software running at all times. The software upgrade schedule is listed on the AppNeta service status page: http://status.appneta.com/.
  • Scheduled - Upgrades are to be performed automatically on a regularly scheduled interval. This enables you to schedule upgrades during your regular network maintenance window. You also have the option of skipping the next upgrade.

To configure Monitoring Point upgrade automation:

  1. Within APM, navigate to > Manage Monitoring Points.
  2. For the Monitoring Point you want to configure, select > Upgrade Settings.
  3. From the Upgrade Type drop-down, select the type of upgrade automation you want to use.
    • If you select Scheduled you will need to specify the upgrade schedule (Note: The upgrade schedule is based on the Monitoring Point time zone).
  4. Click Save.
    • The Monitoring Point upgrade automation is set.

The Upgrade Settings option is also available in the Bulk Action drop-down. Use this feature to configure upgrade automation on multiple Monitoring Points at the same time.

Manual upgrade

The upgrade process can be performed manually at any time to any model of Monitoring Point no matter which of the upgrade automation settings is selected.

To upgrade Monitoring Point software to the latest release:

  1. Within APM, navigate to > Manage Monitoring Points.
  2. For the Monitoring Point you want to upgrade, select > Upgrade Now.
  3. Click OK.
    • The Monitoring Point software is upgraded to the latest release.

The Upgrade Now option is also available in the Bulk Action drop-down. Use this feature to upgrade multiple Monitoring Points at the same time.

Uninstall Linux NMP software

Prior to removing the NMP software, delete the Monitoring Point in APM.

To uninstall the Linux NMP software:

  1. Remove all files that were installed.

    [root@hostname ~]# rm -rf /opt/pathview

Troubleshooting a Linux NMP installation

  1. Verify that the NMP is running.

    [root@hostname ~]# ps -ef | grep netseq-linux
root     25660     1  0 Jan29 ?        00:03:25 ./netseq-linux -b
root     32522 32465  0 10:55 pts/1    00:00:00 grep netseq-linux

  2. Restart the sequencer if necessary.

    [root@hostname ~]# ./netseq-linux -b
    • Use sudo if you don’t have permissions to run the command directly.
    • Use find / -name 'netseq-linux' to find where netseq-linux is located if it is not in the current directory.

  3. Verify that the file nis.config exists.

    [root@hostname opt]# pwd
/opt
[root@hostname opt]# find . -name 'nis.config'
./pathview/config/nis.config

  4. Check for errors in Sequencer.log.

    [root@hostname opt]# cat pathview/log/Sequencer.log | grep ERR
ERR (15103|3080215440|2018-01-28 14:01:23.669926 Could not connect to NIS at pca05.

  5. If you have difficulties, open a support ticket.