Monitoring VMware vCenter Servers using HTTP Health checks

Monitoring VMware vCenter Servers using HTTP Health checks

If you are curious about monitoring your VMware vCenter Servers which I am sure that most of you are then you might find this interesting. Did you know that you can monitor the:

  1. VMware vSphere Profile-driven Storage Service
  2. vCenter Inventory Service
  3. ESX Agent Manager
  4. vService Manager
  5. vCenter Storage Monitoring Service
  6. vCenter Logging Services
  7. Autodeploy Service

All with a simple, unauthenticated HTTP GET request? Here’s how:

Inside of /usr/lib/vmware-vpx/extensions/ you will find several sub folders, one for each extension and inside of those an extension.xml file. That file contains the URL for the healthcheck for each service.

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If you do a GET request against the URL listed it will return a bit of XML that includes the status of the service that you are inquiring about.

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For quick reference here are the ones currently available in 5.x

https://<FQDN>/sps/health.xml – Storage Profile Service
https://<FQDN>/sms/health.xml – vCenter Storage Monitoring Service
http://<FQDN>/eam/eamService-web/health.xml – ESX Agent Manager
https://<FQDN>vsm/health.xml – vService Manager
https://<FQDN>:8443/ls/health – vCenter Logging Services
https://<FQDN>:6502/vmw/rbd/health-info – Autodeploy Service

The inventory Service works out of box on a Windows vCenter but on the vCSA you will need to open port 10080 on the iptables firewall first, preferably only to your monitoring host.

http://<FQDN>:10080/health – vCenter Inventory Service

and here is the needed firewall update:

iptables -I INPUT -p tcp –s <SOURCE IP> –dport 10080 -j ACCEPT
service iptables save

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