Problem Connecting to scalarizer Agent

Eliade Micu's Avatar

Eliade Micu

18 Dec, 2014 12:34 AM


I get the following error when I attempt to open up the Extended Instance Information:

Unable to perform request to scalarizr: Couldn't connect to server; Failed to connect to port 8010: Connection refused (

This happens for 2 of my instances: clyde-farm-4 → clyde-app-server-3 #1 and clyde-farm-4 → clyde-app-server-3 #2, and it doesn't happen on other instances. The agent version on these instances is 2.10.11, on the others is 2.12.4. If I try to run a script on any of these instances, nothing seems to happen, and nothing gets logged.

This issue happened intermittently in the past, please help. As it stands, I am unable to run any maintenance scripts on these instances from the scalr interface. Thank you.

Eliade Micu

  1. Support Staff 1 Posted by Marat Komarov on 18 Dec, 2014 12:06 PM

    Marat Komarov's Avatar

    Agent is running fine and ready for connections, please check firewall and security group settings for tcp 8010 and 8013


  2. 2 Posted by Eliade Micu on 18 Dec, 2014 03:35 PM

    Eliade Micu's Avatar

    Hi Marat,


    I don’t think it’s a permission issue, the Windows Firewall is off on those instances, and they run in the scalr.ip-pool ( <> sg-d7e421b2) security group, just like the other instances that experience no issues. Interestingly, if I RDP into the instance <> clyde-farm-4 → <> clyde-app-server-3 # <> 1 and type localhost:8010 in a Chrome browser window, nothing happens.


    Here is the output of netstat on this instance, there are a lot of CLOSE_WAITs, which is not good:


      Proto Local Address Foreign Address State

      TCP c-174-56-174-131:49978 ESTABLISHED


      TCP 174:41351 TIME_WAIT

      TCP 124:35009 CLOSE_WAIT

      TCP 124:36302 CLOSE_WAIT

      TCP sl2-dal07:37064 CLOSE_WAIT

      TCP sl2-dal07:46253 CLOSE_WAIT

      TCP sl2-dal07:48525 CLOSE_WAIT

      TCP sl2-dal07:51545 CLOSE_WAIT

      TCP sl2-dal07:60577 CLOSE_WAIT


    If I try localhost:8010 on another instance, like <> clyde-farm-4 → <> clyde-mongo # <> 1, I get back a response, like 'HTTP_X_SIGNATURE', so there’s something else going on. Anything else to look into? Thanks.

  3. Support Staff 3 Posted by Marat Komarov on 22 Dec, 2014 09:30 AM

    Marat Komarov's Avatar

    Port 8010 is owned by 2 processes, one of which is dead (8708). Seems that it was crashed, and Windows left socket owned by it. We'll find a way how to prevent this, but for now you need to reboot your server.

    netstat -ano
      TCP               LISTENING       8708
      TCP               LISTENING       6376
  4. Marat Komarov closed this discussion on 20 Jan, 2015 10:25 AM.

Comments are currently closed for this discussion. You can start a new one.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac

Recent Discussions

02 Jul, 2019 07:54 PM
07 Jun, 2019 07:12 PM
02 May, 2019 04:04 PM
28 Mar, 2019 05:24 PM
22 Feb, 2019 08:11 PM