topic Re: TCP output error after upgradation of HF in Splunk Enterprise https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571054#M10338 <P>Hi&nbsp;<a href="https://community.splunk.com/t5/user/viewprofilepage/user-id/70277">@uagraw01</a>&nbsp;</P><P>the target index queue is blocked check the indexer status using MC and do the necessary fix so the HF will start resuming forwarding events to indexers.</P><P>you can check the ./splunk list forward-server on HF is there are at least one active indexer.</P><P>--</P><P>An upvote would be appreciated if&nbsp; this reply helps!</P> Thu, 14 Oct 2021 23:08:23 GMT venkatasri 2021-10-14T23:08:23Z TCP output error after upgradation of HF https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571020#M10335 <P>Hello Splunkers!!</P><P>&nbsp;</P><P>When i am upgrading my web HF from 8.0.0 to 8.1.2 then i am getting below error. Please let me what is available workaround for the below issue.</P><P>&nbsp;</P><P><STRONG><EM>The TCP output processor has paused the data flow. Forwarding to host_dest=&lt;indexer_name&gt; inside output group splunkcloud from host_src=&lt;HF_NAME&gt; has been blocked for blocked_seconds=1970. This can stall the data flow towards indexing and other network outputs. Review the receiving system's health in the Splunk Monitoring Console. It is probably not accepting data.</EM></STRONG></P> Thu, 14 Oct 2021 16:34:28 GMT https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571020#M10335 uagraw01 2021-10-14T16:34:28Z Re: TCP output error after upgradation of HF https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571022#M10336 <P>Probably not helpful but I have had this error a few times in the past. I just restart the Indexer and it works as normal. I don't know what causes this, I just fixed it. haha</P> Thu, 14 Oct 2021 16:39:46 GMT https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571022#M10336 Stefanie 2021-10-14T16:39:46Z Re: TCP output error after upgradation of HF https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571054#M10338 <P>Hi&nbsp;<a href="https://community.splunk.com/t5/user/viewprofilepage/user-id/70277">@uagraw01</a>&nbsp;</P><P>the target index queue is blocked check the indexer status using MC and do the necessary fix so the HF will start resuming forwarding events to indexers.</P><P>you can check the ./splunk list forward-server on HF is there are at least one active indexer.</P><P>--</P><P>An upvote would be appreciated if&nbsp; this reply helps!</P> Thu, 14 Oct 2021 23:08:23 GMT https://community.splunk.com/t5/Splunk-Enterprise/TCP-output-error-after-upgradation-of-HF/m-p/571054#M10338 venkatasri 2021-10-14T23:08:23Z