Upgraded OneClick server from 22.2.6 to 23.3.13 getting continuous errors in Catalina.out

Products

• Network Observability

Issue/Introduction

As per the log analysis we can see that these IOException messages appears every 1 min consistently.

The following log continues to appear:
2024-09-30 00:00:32,391 [Thread-16] WARN  com.aprisma.errorlog - IOException: Connection refused
2024-09-30 00:00:32,391 [Thread-16] WARN  com.aprisma.errorlog - IOException: Connection refused

 

Environment

23.3.x

22.2.x

Cause

These messages are coming from WebTomcatHealthWatcher class 

This class checks the health of Webtomcat every 1 min 

 when its trying to connect to Webtomcat its getting the IOException with cause Connection refused.

 

Resolution

Ensure below

1.Webtomcat service running
2.Webtomcat port is reachable
3. Disable firewall / iptables / AntiVirus which can cause hindrance for the communication with webtomcat
4.SELINUX disabled