Why are they down so often? Isn’t that another problem? —
> On 14 Jun 2023, at 08:50, Saksham Gupta <saksham.gu...@indiamart.com.invalid> > wrote: > > @Ufuk We are using a load balancer to avoid a single point of failure i.e. > if all the requests have a single coordinator node then it would be a major > issue if this solr node goes down. > > @Mikhail Khludnev We already have a health check configured on load > balancer, but the requests will fail if the coordinator node goes down > after request is sent from lb. > Further explaining, the load balancer will check if a certain port is up or > not and based on that send the request to that node. The issue is observed > for cases where the coordinator node goes down after a request is sent from > lb. > > Please let me know if I am missing something here. Any other suggestions? > >> On Tue, Jun 13, 2023 at 7:12 PM Mikhail Khludnev <m...@apache.org> wrote: >> >> Well, probably it's what Solr Operator can provide on Kubernetes. >> >> On Tue, Jun 13, 2023 at 10:47 AM ufuk yılmaz <uyil...@vivaldi.net.invalid> >> wrote: >> >>> Just wondered, solr cloud itself can handle node failings and load >>> balancing. Why use an external cloud load balancer? >>> >>> —ufuk yilmaz >>> >>> — >>> >>>> On 13 Jun 2023, at 10:28, Mikhail Khludnev <m...@apache.org> wrote: >>>> >>>> Hello >>>> You can configure healthcheck >>>> >>> >> https://cloud.google.com/load-balancing/docs/health-check-concepts#criteria-protocol-http >>>> with Solr's ping request handler >>>> https://solr.apache.org/guide/solr/latest/deployment-guide/ping.html. >>>> Also, Google cloud has sophisticated Traffic Director, which can also >>> suit >>>> for node failover. >>>> >>>> On Tue, Jun 13, 2023 at 9:13 AM Saksham Gupta >>>> <saksham.gu...@indiamart.com.invalid> wrote: >>>> >>>>> Hi team, >>>>> We need help with the strategy used to request data from solr cloud. >>>>> >>>>> *Current Searching Strategy:* >>>>> We are using solr cloud 8.10 having 8 nodes with data sharded on the >>> basis >>>>> of an implicit route parameter. We send a search http request on >>> google's >>>>> network load balancer which divides requests amongst the 8 solr nodes. >>>>> >>>>> *Problem with this strategy:* >>>>> If solr on any one of the nodes is down, the requests that come to >> this >>>>> node give 5xx. >>>>> >>>>> We are thinking of other strategies like >>>>> 1. adding 2 vanilla nodes to this cluster(which will contain no data) >>> which >>>>> will be used for aggregating and serving requests i.e. instead of >>> sending >>>>> requests from lb to the 8 nodes, we will be sending the requests to >> the >>> new >>>>> nodes which will send internal requests on other nodes and fetch >>> required >>>>> data. >>>>> 2. Instead of dividing requests using a load balancer, we can use >>> zookeeper >>>>> to connect with solr cloud. >>>>> >>>>> Would these strategies work? Is there a more optimized way using which >>> we >>>>> can request on solr? >>>>> >>>> >>>> >>>> -- >>>> Sincerely yours >>>> Mikhail Khludnev >>> >>> >> >> -- >> Sincerely yours >> Mikhail Khludnev >>
