[ZBX-23268] [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server Created: 2023 Aug 15  Updated: 2023 Aug 15  Resolved: 2023 Aug 15

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Proxy (P)
Affects Version/s: 6.0.19
Fix Version/s: None

Type: Problem report Priority: Trivial
Reporter: Carles Constanti Assignee: Zabbix Support Team
Resolution: Known Error Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Rocky Linux 8 ec2 instance in AWS

[constanti@zbxproxy-01 ~]$ zabbix_proxy --version
zabbix_proxy (Zabbix) 6.0.17
Revision c81d82859a8 24 April 2023, compilation time: Apr 24 2023 11:31:21

[constanti@zbx-01 ~]$ sudo zabbix_server --version
zabbix_server (Zabbix) 6.0.15
Revision 287da69c170 31 March 2023, compilation time: Mar 31 2023 12:08:49

Attachments: PNG File image-2023-08-15-11-28-00-242.png    

 Description   

We set up a zabbix-proxy in AWS running on an ec2 instance which is behind a network Load Balancer. The LB has a listener on port 10050, 10051 and 80 and associated target groups pointing to the proxy instance

We have a zabbix role with an iam policy as explained in https://www.zabbix.com/integrations/aws_ec2 and we also installed the 6.0 AWS EC2 by HTTP template on our frontend server

Steps to reproduce:

  • add another ec2 instance in same vpc to the frontend server to monitor and associate the template
  • ensure the template macros contain the zabbix user access keys and region
  • ensure the ec2 instance macro contains the instance id
  • check that the agent is sending data to the proxy
  • check that the active proxy is sending data to the server

 

Result:

 

[constanti@zbxproxy-01 ~]$ tail -f /var/log/zabbix/zabbix_proxy.log
  1574:20230815:085448.020 [ AWS EBS ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1615:20230815:085448.021 [ AWS EBS ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1609:20230815:085500.010 [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1609:20230815:085500.014 [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1609:20230815:085500.027 [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1615:20230815:085500.035 [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1609:20230815:085500.039 [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server.
  1574:20230815:085500.051 [ AWS EC2 ] ERROR: Error: cannot get URL: Couldn't connect to server.

Expected:
the proxy collects data for the specific instance and sends it to the server

The frontend ui displays latest data for the EC2 instance

 

 Comments   
Comment by Carles Constanti [ 2023 Aug 15 ]

Turns out Cloudwatch monitoring was not enabled for the ec2 instances at AWS side

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