Available in Nexus Repository OSS and Nexus Repository Pro
Nexus Repository Manager provides a number of features that allow you to ensure your server is configured correctly and provides you with tools to investigate details about the configuration. This information can be useful for troubleshooting and support activities.
All support features are available in the Support group of the Administration menu in the main menu section.
Logging and Log Viewer
You can configure the level of logging for the repository manager and all plugins as well as inspect the current log using the user interface with the Logging and the Log Viewer feature views. Access the Logging feature view displayed in Figure: “The Logging Feature View for Configuring Loggers” with the Logging menu item in the Support section in the Administration main menu.
To access these features, the account must have either the nx-all or nx-logging privilege.
Figure: The Logging Feature View for Configuring Loggers
The Logging feature view allows you to configure the preconfigured loggers as well as add and remove loggers. You can modify the log level for a configured logger by clicking on the Level value, e.g.
INFO. It will change into a drop-down of the valid levels including
INFO and others. Press the Update button to apply the change.
The Create logger button can be used to create new loggers. You will need to know the Logger name you want to configure. Typically this corresponds to the Java package name used in the source code. Depending on your needs you can inspect the source of Nexus Repository Manager OSS and the plugins as well as the source of your own plugins to determine the related loggers or contact Sonatype support for detailed help.
If you select a row in the list of loggers, you can delete the highlighted logger by pressing the Delete logger button above the list. This only applies to previously created custom loggers. To disable a default configured logger, set it to
When upgrading the repository manager, keep in mind that some loggers change between versions, so if you rely on specific loggers, you might have to reconfigure them.
The Reset to default levels button allows you to remove all your custom loggers and get back to the setup shipped with a fresh install of the repository manager.
The loggers configured in the user interface are persisted into
$data-dir/etc/logback/logback-overrides.xml and override any logging levels configured in the main
$install-dir/etc/logback/logback.xml file as well as other
logback-* files. If you need to edit a logging level in those files, edit the overrides file. This will give you access to edit the configuration in the user interface at a later stage and also ensure that the values you configure take precedence.
ROOT logger level controls how verbose the logging is in general. If set to
DEBUG, logging will be very verbose, printing all log messages including debugging statements. If set to
ERROR, logging will be far less verbose, only printing out a log statement if the repository manager encounters an error. INFO represents an intermediate amount of logging.
When configuring logging, keep in mind that heavy logging can have a significant performance impact on an application and any changes trigger the change to the logging immediately.
Once logging is configured as desired, you can inspect the impact of your configuration in the Log Viewer feature view. It allows you to copy the log from the server to your machine by pressing the Download button. The Create mark button allows you to add a custom text string into the log, so that you can create a reference point in the log file for an analysis of the file. It will insert the text you entered surrounded by
* symbols as visible in Figure: “Viewing the Log with an Inserted Mark”.
Figure: Viewing the Log with an Inserted Mark
The Refresh interval configuration on the right on the top of the view allows you to configure the timing for the refresh as well as the size of the log displayed. A manual refresh can be triggered with the general refresh button in the main toolbar.
The Metrics feature view is available in the Support section of the Administration main menu. It provides insight to characteristics of the Java virtual machine JVM running the repository manager and is displayed in Figure: “JVM Metrics”.
Figure: JVM Metrics
The Memory usage, Thread states, Active Web Requests, Web Response Codes and Web Requests charts provide some simple visualizations. Hovering over parts of the pie chart or bar graph provides a little more detail (e.g. a percentage of usage).
The Download button allows you to retrieve a large number of properties from the JVM and download them in a JSON-formatted text file. The Thread dump button triggers the creation of a thread dump of the JVM and a download of the resulting text file.
Nexus Repository Manager exports its metrics in Prometheus format at
/service/metrics/prometheus and requires Application privilege for Domain metrics and action read (or use existing nx-metrics-all privilege) to access it. In order to consume those metrics you need to configure your Prometheus to scrape the data from Nexus Repository Manager. For your convenience we attached an example prometheus.yml file you can pass to Prometheus (remember to edit the target to point to your Nexus Repository Manager instance; we used
host.docker.internal:8081). Once you've got your Prometheus running, verify connectivity between Prometheus and Nexus Repository Managet at
. You can stop here or you can go further and use Prometheus as a datasource for another tool like Grafana or Elastic.
The Support ZIP feature view allows you to create a ZIP archive file that you can submit to Sonatype support via email or a support ticket. The checkboxes in Contents and Options allow you to control the content and size of the archive.
The repository manager implements security measures when a support ZIP is generated. Sensitive password related information is removed from generated files. When a support ZIP download is attempted, you may be prompted to verify your repository manager account credentials.
Support ZIP archive files are stored on the server under the
$data-dir/downloads directory using a name which includes the time the file was generated.
Creating a Support ZIP
- Sign in to the user interface using the default admin account or any account with the nx-admin role.
- Click the cog icon in the top toolbar to open the administration interface.
- Select Support and then Support ZIP sidebar menu items.
- Review the options and click the Create Support ZIP button. A popup dialog will be shown when the support zip generation is complete.
- Either download the support ZIP using the Download button or use the file path shown to retrieve the file from the $data-dir/downloads directory.
The System Information feature view displays a large number of configuration details related to:
Nexus Repository Manager
details about the versions of the repository manager and the installed plugins, install and work directory location, application host and port and a number of other properties
Java Virtual Machine
all system properties known by the JVM running the repository manager such as
including environment variables like
PATH as well as details about the runtime in terms of processor, memory and threads, network connectors and storage file stores
You can copy a subsection of the text from the panel or use the Download button to retrieve a JSON-formatted text file.