Miles, can I get a minimal working set of config files including parent.config so I can hopefully figure out what's missing?
On Fri, Jan 11, 2019 at 12:33 PM Hobin Yoon <[email protected]> wrote: > Another thing I noticed was ATS didn't generate any error when I > intentionally introduced an error in parent.config such as typing > dest_domain1 instead of dest_domain, which made me wondering if > parent.config was being read at all. > > On Fri, Jan 11, 2019 at 12:00 PM Hobin Yoon <[email protected]> wrote: > >> Should you still specify the mapping in remap.config when you have the >> mapping in parent.config? >> >> >> On Fri, Jan 11, 2019 at 11:33 AM Randall Meyer <[email protected]> >> wrote: >> >>> >>> Looking at your remap.config in that repo, I see that all the mappings >>> are all commented out. Was that intentional? >>> On Thursday, January 10, 2019, 8:28:53 PM PST, Hobin Yoon < >>> [email protected]> wrote: >>> >>> >>> Yes, they are also ATS nodes and they worked fine when requests were >>> made to them directly. >>> >>> I uploaded the config files here, if you could take a look: >>> https://gitlab.com/hobinyoon/trafficserver-config >>> >>> Hobin >>> >>> >>> >>> On Thu, Jan 10, 2019 at 7:31 PM Miles Libbey <[email protected]> wrote: >>> >>> Typically that error means the request doesn't match a rule in >>> remap.config. Is the error coming from the first hop or one of the >>> 123.123.123.[1-4] nodes? That is, if 123.123.123.[1-4] are ATS nodes, >>> are they configured to accept the requests they are getting? >>> >>> On Thu, Jan 10, 2019 at 2:51 PM Hobin Yoon <[email protected]> wrote: >>> > >>> > With parent.config >>> > dest_domain=. scheme=http parent="123.123.123.1:80,123.123.123.2:80" >>> round_robin=consistent_hash go_direct=false >>> > >>> > I'm getting >>> > >>> > Not Found on Accelerator >>> > ________________________________ >>> > Description: Your request on the specified host was not found. Check >>> the location and try again. >>> > >>> > I must be missing something ... >>> > >>> > Hobin >>> > >>> > On Thu, Jan 10, 2019 at 1:18 PM Hobin Yoon <[email protected]> >>> wrote: >>> >> >>> >> Alan, that is the only map rule we have with the varying number of >>> cache nodes. During the down time, ATS doesn't return "HTTP/1.1 200 OK" for >>> the requests. I didn't check what it returned. >>> >> >>> >> Miles, I'll check out parent plugin! >>> >> >>> >> Hobin >>> >> >>> >> On Thu, Jan 10, 2019 at 1:13 PM Alan Carroll < >>> [email protected]> wrote: >>> >>> >>> >>> It could be an artifact of reloading plugin configurations if you >>> have a lot of remap rules with plugins, although internally ATS should do >>> the load and then swap the configuration. During the down time, does ATS >>> process any traffic, or there is traffic but no caching? >>> >>> >>> >>> On Thu, Jan 10, 2019 at 10:53 AM Miles Libbey <[email protected]> >>> wrote: >>> >>>> >>> >>>> We don't experience downtime when using traffic_ctl config reload >>> (we >>> >>>> use that ~daily). >>> >>>> >>> >>>> We don't use the balancer plugin. Instead, we use parent.config >>> >>>> ( >>> https://docs.trafficserver.apache.org/en/8.0.x/admin-guide/files/parent.config.en.html >>> ) >>> >>>> to achieve the same consistent hash. Your config would translate to >>> >>>> >>> >>>> remap.config >>> >>>> map / http://127.0.0.1 @plugin=cachekey.so >>> >>>> @pparam=--include-params=p0,p1 @pparam=--sort-params=true >>> >>>> >>> >>>> parent.config >>> >>>> dest_domain=. scheme=http >>> >>>> parent="123.123.123.1:80,23.123.123.2:80,123.123.123.3:80, >>> 123.123.123.4:80" >>> >>>> round_robin=consistent_hash go_direct=false >>> >>>> dest_domain=. scheme=https >>> >>>> parent="123.123.123.1:443,23.123.123.2:443,123.123.123.3:443, >>> 123.123.123.4:443" >>> >>>> round_robin=consistent_hash go_direct=false >>> >>>> >>> >>>> miles >>> >>>> >>> >>>> On Wed, Jan 9, 2019 at 10:53 PM Hobin Yoon <[email protected]> >>> wrote: >>> >>>> > >>> >>>> > Hi, >>> >>>> > >>> >>>> > We are noticing there is quite a bit of delay when we reload the >>> config with traffic_ctl config reload. The delay is up to about 30 seconds, >>> during which period we don't get any caching. We are using consistency >>> hashing plugin. The number of nodes changes dynamically between 5 to 30. >>> >>>> > >>> >>>> > Here is an example balancer (consistent hash) configuration in >>> remap.config. >>> >>>> > >>> >>>> > map / http://127.0.0.1 @plugin=cachekey.so >>> @pparam=--include-params=p0,p1 @pparam=--sort-params=true >>> @plugin=balancer.so @pparam=--policy=hash,key @pparam=123.123.123.1 >>> @pparam=123.123.123.2 @pparam=123.123.123.3 @pparam=123.123.123.4 ... >>> >>>> > >>> >>>> > Is this downtime normal? How do you guys avoid the service >>> downtime while reconfiguring the cache nodes in the cluster? >>> >>>> > >>> >>>> > Hobin >>> >>>> > >>> >>>> > >>> >>>> > >>> >>>> > >>> >>>> > >>> >>> >>> >>> >>> >>> >>> >>> -- >>> >>> Beware the fisherman who's casting out his line in to a dried up >>> riverbed. >>> >>> Oh don't try to tell him 'cause he won't believe. Throw some bread >>> to the ducks instead. >>> >>> It's easier that way. - Genesis : Duke : VI 25-28 >>> >>>
