Frequently Asked Questions

isyVmon license requirements

In order to get a license for isyVmon or for isyVmon extensions, it is necessary to send us the following information: 

1) The Zend ID of the isyVmon appliance
2) IP- and MAC-Address of the isyVmon appliance

For 1) You obtain this information by connecting to the isyVmon Console UI and execute the following command as in the example below:
#> zendid
M:ABC12-ABC12-ABC12-ABC12

Hint: If you see several id numbers here send them all to us, please.

For 2) You obtain this information by connecting to the isyVmon Console UI and execute the following command as in the example below:
#> ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether af:af:af:af:af:af brd ff:ff:ff:ff:ff:ff
    inet 10.1.7.19/24 brd 10.1.7.255 scope global eth0
    inet6 fe80:: fe80: fe80: fe80:9999/64 scope link 
       valid_lft forever preferred_lft forever

Hint: Please send us the whole output.

Howto create the isyVmon support file

  1. Login to the isyVmon Monitoring GUI (http(s)://isyVmonIP/)
  2. Optional: delete/replace sensible information at "Configuration" --> "Nagios" --> "ressources"
  3. Check if isyVmon GSF (Get Support Files) Extension is ready to use:
    "Administration" --> "Modules"
    Search for "isyVmonGSF" and check the icon at the right site:
    a) If there are 2small gears with a "Play" sign = click at this icon and proceed by clicking "install" at the next step
    b) If you see a trash icon you can proceed with the next step
  4. Create the isyVmon support file: "Administration" --> "About" --> "isyVmon Support" --> "Create Support File"
  5. When finished you will see a TAR.GZ file. Download it by clicking at the filename and send it to support(at)isyVmon.com
  6. Optional: Revert the changes you may have done in step 2. 

How can I scan a Switch/Router via SNMP to find out the interface names?

Scanning via SNMP a Switch/Router for traffic is possible via the isyVmon Console UI or within the Monitoring GUI. The most comfortable way is the Monitoring GUI which I try to describe here:

1) Go to Configuration -> Commands -> Click at 'Add'
2) Please see the attached screenshot for an example with all steps to take (where '10.10.1.23' is the device I want to scan and 'public' is my SNMP community).

Here is the command for copy'n'paste which is shown within the attached screenshot:
$USER1$/check_centreon_snmp_traffic -H $HOSTADDRESS$ -C "$ARG1$" –s

Hint: Please ensure that SNMP is activated at your Switch/Router and that your isyVmon system is allowed to reach and read the SNMP device (Firewall, SNMP access list,…) 

What are the differences between Monitoring GUI, Admin GUI and Console UI?

The isyVmon Monitoring GUI is your main front-end for configuring and managing all the devices you want to monitor and shows you important data and views of your network. In particular you will use the isyVmon Monitoring GUI for Add new devices to monitor; Remove devices from monitoring, Displaying all configured hosts and services you monitor (status of your network/devices/business processes); Acknowledge, schedule downtimes, add/remove comments to hosts or services; Create reports; Viewing host/network dependencies (Extended Status Map).

The Admin GUI of isyVmon is for the appliance administration. With the Admin GUI you can Reboot the appliance; Shutdown the appliance; Configure IP/Netmask/Routing/DNS and hostname of your appliance; Configure proxy settings; Set your time zone; Update your appliance (license needed); Show your license information*; Upload and activate a new isyVmon license*; Resolve problems with your license* (reset host count of license check). *Included since isyVmon v2.2. Easy setup package for isyVmon v2.0 available at support(at)isyVmon.com 

Normally you don't need to use the Console UI but in some circumstances it is required - especially when requested by isyVmon support. The Console UI can be used to do the initial setup (atm the only way for first configuration of an isyVmon appliance); debug Nagios plugins; copy your own plugins to isyVmon (have to be saved in /usr/local/nagios/libexec/custom); debug problems with networking issues; debug problems in isyVmon (in conjunction with isyVmon support). The isyVmon Console UI is either the console presented by your VM hypervisor (ESX(i) console) or when you logging with SSH/Putty into the appliance. 

Why are all hosts displayed as "unknown" in the freeware edition - even when less than 10?

In some circumstances the limitation to 10 hosts in isyVmon v2.0 are not reset when you delete and/or rename a host. A workaround through the new isyVmon License Manager is available. more 

How can I determine what isyVmon version is currently running?

before isyVmon v2.0:

  • Login with SSH to your Appliance
  • cat /etc/isyVmon/version

since isyVmon v2.0 you have two options to find out your version:

  • Simply open the Webinterface of isyVmon (http://yourApplianceIP/) and look at the bottom of the page
  • or: Login with SSH to your Appliance and enter cat /etc/isyVmon/appliance.info 

Error contacting update server. Please check network configuration. The requested URL returned error: 403

Please ensure you have an active software update service (isyVmon freeware can receive only system-updates) if you are not sure do not hesitate to contact us. 

How do I monitor ESX(i)/vSphere?

isyVmon has integrated the Check ESX plugin developed by op5. You can monitor VMware

  • ESX Datacenter/vCenter
  • ESX(i)/vSphere host
  • virtual host
  • virtual host through a Datacenter/vCenter
  • ESX/vSphere host through a Datacenter/vCenter

The only prerequisites you need is an account on the server with sufficient access rights. The user must be a member of the group user and should be based on the profile “read only” which has enough rights for monitoring.

isyVmon provides you a couple of predefined service templates to monitor your VMware infrastructure, e.g. cpu usage, memory usage, swap usage, network usage, VMFS storage usage, runtime status, runtime issues, IO read / write. 

For more detailed information about the Check ESX plugin usage please see here

For more answers see also the isyVmon Forum.

isyVmon Forum >>