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  • Wasabi-RSM
    Junior Member
    • Feb 2014
    • 11
    #1

    Zabbix agent item on host failed: network error

    Hello Zabbix Community,

    I have a problem, which has been posted multiple times before, but none of those solutions worked for my scenario.

    My Zabbix server, hosted by a "Cloud Provider" is running perfectly, but there are ALOT of the above mentioned errors popping up in the /var/log/zabbix/zabbix_server.log file. Everything is working (apart from my service discovery) - so its not like something is "broken" - but this keeps appearing, and a few secons later a message indicating that the connection has been restored pops up again.

    Would you please help me with this??
    Tags: agent error, connection, network error, server error
    • aib
      Senior Member
      • Jan 2014
      • 1615
      #2
      Try to play with Timeout

      Code:
      vi /etc/zabbix/zabbix_server.conf


### Option: Timeout
#       Specifies how long we wait for agent, SNMP device or external check (in seconds).
#
# Mandatory: no
# Range: 1-30
# Default:
# Timeout=3
      Sincerely yours,
      Aleksey

        Comment

        • Wasabi-RSM
          Junior Member
          • Feb 2014
          • 11
          #3
          I've done what you suggested - I've changed the TimeOut to 30 seconds? I've also removed all the hosts and had them rediscover themselves. (Its a new server, so I can afford to lose the logging data, for now...)

          Only time will tell if that worked - will update if not :-)

          Thanks for your help buddy!

          Originally posted by aib
          Try to play with Timeout

          Code:
          vi /etc/zabbix/zabbix_server.conf


### Option: Timeout
#       Specifies how long we wait for agent, SNMP device or external check (in seconds).
#
# Mandatory: no
# Range: 1-30
# Default:
# Timeout=3

            Comment

            • tchjts1
              Senior Member
              • May 2008
              • 1605
              #4
              Originally posted by Wasabi-RSM
              I've done what you suggested - I've changed the TimeOut to 30 seconds?
              Just make sure that the new value of 30 is not preceded by a comment "#". Anything commented is ignored. I leave the defaults as they are, then I add a new line for anything I modify so I can keep track of what the defaults were. So you might want to have it look like this:

              (And don't forget to restart Zabbix server process after you make any conf changes)


              ### Option: Timeout
              # Specifies how long we wait for agent, SNMP device or external check (in seconds).
              #
              # Mandatory: no
              # Range: 1-30
              # Default:
              # Timeout=3
              Timeout=30

                Comment

                • Wasabi-RSM
                  Junior Member
                  • Feb 2014
                  • 11
                  #5
                  Originally posted by tchjts1
                  Just make sure that the new value of 30 is not preceded by a comment "#". Anything commented is ignored. I leave the defaults as they are, then I add a new line for anything I modify so I can keep track of what the defaults were. So you might want to have it look like this:

                  (And don't forget to restart Zabbix server process after you make any conf changes)


                  ### Option: Timeout
                  # Specifies how long we wait for agent, SNMP device or external check (in seconds).
                  #
                  # Mandatory: no
                  # Range: 1-30
                  # Default:
                  # Timeout=3
                  Timeout=30
                  I've done what was suggested, and it seemed to have worked for a bit, but then the errors started again?

                  Code:
                  Zabbix agent item "net.if.out[vmxnet3 Ethernet Adapter-WFP LightWeight Filter-0000]" on host "xxxxx" failed: first network error, wait for 15 seconds
resuming Zabbix agent checks on host "xxxxx": connection restored

                    Comment

                    • tchjts1
                      Senior Member
                      • May 2008
                      • 1605
                      #6
                      Take a look at the last paragraph and the graphs in this post:
                      We’ll be back soon!
                      https://www.zabbix.com/forum/showthread.php?t=41219


                      If you look at yours (or post them here), it may identify any additional adjustments that could help you out.

                        Comment

                        • Wasabi-RSM
                          Junior Member
                          • Feb 2014
                          • 11
                          #7
                          Hello,

                          As requested, here are my graphs... My data gathering process was very high, running at 100%, but after following some instructions on how to start more pollers, and increase the max_connections for MySQL that was resolved.

                          (PS: I'm runnig Zabbix Server 2.2.2, and Agents 2.2.1)



                          Originally posted by tchjts1
                          Take a look at the last paragraph and the graphs in this post:
                          We’ll be back soon!
                          https://www.zabbix.com/forum/showthread.php?t=41219


                          If you look at yours (or post them here), it may identify any additional adjustments that could help you out.
                          Attached Files

                            Comment

                            • Wasabi-RSM
                              Junior Member
                              • Feb 2014
                              • 11
                              #8
                              Here is a larger section of the server log - with time intervals ect:

                              (They contain the same type of error, for 3 different hosts - the names have been substituted with "a", "b" and "c".)

                              Code:
                              12111:20140221:064759.374 housekeeper [deleted 0 hist/trends, 0 items, 0 events, 0 sessions, 0 alarms, 0 audit items in 0.008322 sec, idle 1 hour(s)]
 12077:20140221:065940.685 Zabbix agent item "vfs.fs.size[H:,used]" on host "aaaaa" failed: first network error, wait for 15 seconds
 12100:20140221:065955.617 resuming Zabbix agent checks on host "aaaaa": connection restored
 12084:20140221:070005.183 Zabbix agent item "perf_counter["\230(_Total)\952"]" on host "aaaaa" failed: first network error, wait for 15 seconds
 12050:20140221:070005.710 Zabbix agent item "perf_counter["\234(_Total)\1400"]" on host "bbbbb" failed: first network error, wait for 15 seconds
 12095:20140221:070007.211 Zabbix agent item "perf_counter["\234(_Total)\210"]" on host "ccccc" failed: first network error, wait for 15 seconds
 12100:20140221:070021.543 resuming Zabbix agent checks on host "aaaaa": connection restored
 12100:20140221:070022.341 resuming Zabbix agent checks on host "bbbbb": connection restored
 12100:20140221:070023.146 resuming Zabbix agent checks on host "ccccc": connection restored

                                Comment

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