Symptoms
Task for statistic collection failed:
Task ID 4828994
Task name Collect resources usage statistics from Webserver #6132
Task description Collect resources usage statistics from Webserver #6132
Parent task ID 545
Queue status Failed
Start not earlier than December 03, 2013 18:05
Method name taskCollectResUsageFromWebserver on OBJREF:H2EClusterRegistrar:0:H2EResourceManager:0
Last execution output Failed to read statistics from server
The following details can be found in /var/log/poa.debug.log:
Dec 3 18:05:18 osscore : DBG [1:22994:b3af0b90:1100746 1:23119:b1182b90 WebClustersc]: [task:4828994 H2E::H2EResourceManager_impl::task
CollectResUsageFromWebserver] Failed to read /proc/lve/usage
Dec 3 18:05:18 osscore : TRC [1:22994:b45fbb90:1066868 1:23155:af1eeb90 VPSManager]: <ns4:address>
Dec 3 18:05:18 osscore : TRC [1:22994:b45fbb90:1066868 1:23155:af1eeb90 VPSManager]: <ns4:netmask>255.255.240.0</ns4:netmask>
Dec 3 18:05:18 osscore : DBG [1:22994:b3af0b90:1100746 1:23119:b1182b90 lib]: [task:4828994 H2E::H2EResourceManager_impl::taskCollectResUsageFromWebserver] {module_id="H2E"; code="3"} Failed to read statistics from server
Dec 3 18:05:18 osscore : TRC [1:22994:b45fbb90:1066868 1:23155:af1eeb90 VPSManager]: <ns4:ip>40.50.68.79</ns4:ip>
Dec 3 18:05:18 osscore : TRC [1:22994:b45fbb90:1066868 1:23155:af1eeb90 VPSManager]: </ns4:address>
Dec 3 18:05:18 osscore : DBG [1:22994:b3af0b90:1100746 1:23119:b1182b90 WebClustersc]: [task:4828994 H2E::H2EResourceManager_impl::taskCollectResUsageFromWebserver] <=== EXIT (by exception) [0.032160]
Cause
lveusage file was not generated by LVE:
ls -al /proc/lve/usage
ls: /proc/lve/usage: No such file or directory
Resolution
1.Restart lvestats and lvectl service:
# /etc/init.d/lvestats restart
Stopping lvestats: [ OK ]
Starting lvestats: [ OK ]
# /etc/init.d/lvectl restart
Stopping lvectl: [ OK ]
Starting lvectl: [ OK ]
then restart the failed task. If it does not help, reboot the server and try to re-run the task again.