typo in my previous, it's a persistent stat to records.snap On Thu, Apr 16, 2020 at 4:05 PM John Rushford <[email protected]> wrote:
> Hi Sudheer, It's not a records.config entry it's a stat that is persisted > to records.config. HostStatus loads and deserializes the text into a > struct kept in a hash table on startup. > > On Thu, Apr 16, 2020 at 3:56 PM Sudheer Vinukonda < > [email protected]> wrote: > >> We don't use this, so I'm not opposed to the proposed change particularly >> if it means adding more capability :) >> >> However, I do have one comment/concern - can we explore using a different >> config format to be less error prone/more readable? It seems a bit too >> complex and easily error-prone to have to encode the entire config into a >> records.config string. Perhaps, a separate config file or part of one of >> the existing config files and yaml or json format might be easier on the >> eye? >> >> Just my 2c! >> >> Thanks, >> >> Sudheer >> >> On Thursday, April 16, 2020, 02:08:08 PM PDT, John Rushford < >> [email protected]> wrote: >> >> >> Greetings, >> >> With ATS 8.1 I would like find out if a change in the host status metric >> from ATS 8.0 can be made. Host status is new with 8.0 and I suspect not >> many are using it yet so, we would like to make a change to the metric in >> 8.1. >> >> The host status metrics are used in ATS by parent selection and >> traffic_ctl to report and determine if a parent is available for use. A >> user may use the 'traffic_ctl host' command to mark a parent as up or down >> for use by parent selection and that hosts status is then kept in a >> metric. For example in ATS 8.0 a metric could be: >> >> *host_status.192.168.1.1 1. * >> >> the metric prefix "host_status" followed by a host name or IP and it's >> current state: >> 0 = unavailable >> 1 = available. >> >> In ATS 8.1 more features would be added to support health checking, >> downtime, and more. In order to serialize the state I've used this new >> metric format: >> >> *proxy.process.host_status.69.252.41.66 >> HOST_STATUS_UP,ACTIVE:UP:0:0,LOCAL:UP:0:0,MANUAL:UP:0:0,SELF_DETECT:UP:0* >> >> This new format serializes the state of a host with reason codes and the >> times that they were marked down and the state is loaded across restarts. >> This format and the feature change is used in ATS 9.0 and was cherry-picked >> into the new 8.1 branch. Details regarding use of this feature are here: >> https://docs.trafficserver.apache.org/en/latest/appendices/command-line/traffic_ctl.en.html?highlight=host%20status#cmdoption-traffic-ctl-host-arg-status >> >> I would like to see if the community is agreeable to this metric and >> feature change from 8.0 to 8.1. >> >> thanks >> John Rushford >> [email protected] >> > > > -- > John Rushford > [email protected] > -- John Rushford [email protected]
