topic Re: differnce service_fail_fast and node_fail_fast in Operating System - HP-UX

differnce service_fail_fast and node_fail_fast

firas_1 — Fri, 07 Feb 2003 13:14:22 GMT

What is the differnce between service_fail_fast_enabled and node_fail_fast_enabled, with both options YES/NO. please elaborate as am get confused.

Re: differnce service_fail_fast and node_fail_fast

melvyn burnard — Fri, 07 Feb 2003 13:24:00 GMT

If you have service_fail_fast set to yes, and any package has a service configured, if that service fails, then this will casue hte node to TOC.

If you have node_fail_fast set to yes, then any failure such as a subnet failure, will cause the node to TOC.

In other words, service_fail_fast only TOC's the node if a package SERVICE failure occurs, and node_fail_fast is more of a generic failure monitor.

Re: differnce service_fail_fast and node_fail_fast

Steve Steel — Fri, 07 Feb 2003 13:25:18 GMT

Hi

Service Fail Fast
Enter Enabled or Disabled for each service. This parameter indicates whether or not the failure of a service results in the failure of a node. If the parameter is set to Enabled, in the event of a service failure, LockManager will halt the node on which the service is running with a TOC. The default is Disabled.

In the ASCII package configuration file, this parameter is SERVICE_FAIL_FAST_ENABLED, and possible values are YES and NO. The default is NO. Define one SERVICE_FAIL_FAST_ENABLED entry for each service.

Package Fail Fast Enabled
In the event of the failure of the control script itself or the failure of a subnet, if this parameter is set to Enabled, MC/LockManager will issue a TOC on the node where the control script fails. The default is Disabled.

In the ASCII package configuration file, this parameter is called NODE_FAIL_FAST_ENABLED, and possible values are YES and NO. The default is NO.

see
http://www.docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B5158-90001/B5158-90001_top.html&con=/hpux/onlinedocs/B5158-90001/00/00/20-con.html&toc=/hpux/onlinedocs/B5158-90001/00/00/20-toc.html&searchterms=node_fail_fast&queryid=20030207-061025

steve Steel

Re: differnce service_fail_fast and node_fail_fast

firas_1 — Mon, 17 Feb 2003 07:26:28 GMT

sorry for delay, I was in Haj, anyways, if service_fail_fast = false and node_fail_fast=true, then if you kill for example the service proccess being monitored. then MC/SG will try to start running the halting script in the pkg control script, and if execution went fine then only the package wil be halted and node will not TOC. this is what I experinces in my testing cluster. could you please comment on this.