Data collection is not working and entities are not displaying
The entities you have added are not displaying in the user interface, and it seems no data is being collected (Unix Data Collection). Why is this happening?
In some instances, it can take up to about five (5) minutes for initial entity discovery. Ensure that you have waited at least this amount of time before moving on to the next steps. If this is not the case, see the following information about what might be causing this issue.
1. What's going on
|What's going on||Details|
|collectd is not running, or has failed with errors||Splunk App for Infrastructure (SAI) uses collectd to provide data collection and sending many common system performance metrics. The easy install script does most of the work for setting up and sending data, but not all systems are alike. If you are having trouble getting data in, the following Investigation steps will help you identify the Possible root causes of this issue.|
2. Investigation steps
|Investigate the issue using these steps|
|1. Use your terminal to ssh into the server in question.|
|2. Run a status check to ensure collectd is running.|
|3. Check the collectd status.
|4. If there are no immediate status errors, check the log files:
3. Possible causes
|Possible cause||Reasons for the issue, or suggestions to resolve the issue|
|Missing or wrong dependencies||Missing libcurl dependency. Installation script failed to install the libcurl dependency.|
|User does not have root privileges||The installation was not run by a user with root privileges.|
|Unable to resolve hostname||You have set the |
1. Go to
2. Open the file with a text editor.
4. Change to
5. Restart collectd
|Agent data is blocked by a firewall||The collectd daemon transmits metric data over HTTP. Your network must allow each host to send data to the receiving instance (where you installed SAI) on port 8088.
If using a firewall, ensure the following ports are exposed via the firewall on the SAI server. Use TCP incoming/outgoing for all ports.
|Sending data to HEC over HTTP with SSL enabled||If you're sending data to HEC over HTTP with SSL enabled, you'll receive a |
The easy install script repeatedly requests user credentials
Log data is not displaying alongside metric data
This documentation applies to the following versions of Splunk® App for Infrastructure: 1.3.0, 1.3.1, 1.4.0, 1.4.1, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.1.0, 2.1.1 Cloud only, 2.2.0 Cloud only, 2.2.1, 2.2.3 Cloud only, 2.2.4