Have you tried turning up the logging level to see where it is spending the time? For example are you getting any system threads blocking etc?
On Thu, Sep 2, 2021 at 11:01 AM Kamlesh Joshi <kamlesh.jo...@ril.com> wrote: > Yohan, we have tried with JVM param as well, still its taking long time to > connect. > > > > *Thanks and Regards,* > > *Kamlesh Joshi* > > > > *From:* Yohan Fernando <yohan.fernando.1...@gmail.com> > *Sent:* 02 September 2021 15:00 > *To:* user@ignite.apache.org > *Subject:* Re: [External]Re: Client taking long time to connect to cluster > > > > The e-mail below is from an external source. Please do not open > attachments or click links from an unknown or suspicious origin. > > Seems like that VM arg is only read at startup time of the JVM according > to this post, so setting it in code may not work > > > > > https://stackoverflow.com/questions/9882357/how-to-set-java-net-preferipv4stack-true-at-runtime > > > > You might want to try it as a VM argument > > > > On Thu, Sep 2, 2021 at 10:22 AM Kamlesh Joshi <kamlesh.jo...@ril.com> > wrote: > > Hi Yohan, > > > > We have already added this but not as a JVM param but via a code, like > setting in system properties. Still the issue persists. > > > > Any other work around? > > > > *Thanks and Regards,* > > *Kamlesh Joshi* > > > > *From:* Yohan Fernando <yohan.fernando.1...@gmail.com> > *Sent:* 02 September 2021 14:44 > *To:* user@ignite.apache.org > *Subject:* [External]Re: Client taking long time to connect to cluster > > > > The e-mail below is from an external source. Please do not open > attachments or click links from an unknown or suspicious origin. > > We had a similar problem. Try adding -Djava.net.preferIPv4Stack=true to > the VM parameters. > > > > On Wed, Sep 1, 2021 at 3:22 PM Kamlesh Joshi <kamlesh.jo...@ril.com> > wrote: > > Hi Igniters, > > > > We have upgraded OS version from Red Hat 6.10(Santiago) to 7.8(Maipo) in > Client server. Ignite cluster nodes’ OS are already on 7.8, we just > upgraded client server OS. > > > > After upgrading client server, we are facing slow connections with cluster > almost 5 mints. Sometimes it's not even able to connect to cluster from the > client server, so had to retry multiple times. > > We have another client server with OS version 6.10 from which we are not > facing such issue. > > > > *Is there any issue compatibility issue with Red Hat 7.8 version. We are > using ignite 2.7.6 version.* > > > > *Please find netstat output below of upgraded client server:* > > > > Proto Recv-Q Send-Q Local Address Foreign Address > State PID/Program name > > (Not all processes could be identified, non-owned process info > > will not be shown, you would have to be root to see it all.) > > tcp 0 0 0.0.0.0:47101 > <https://protect2.fireeye.com/v1/url?k=f4f8b493-ab631c41-f4f93e6c-002590870bcc-cbcfd1ae6e65752e&q=1&e=9b8089c8-b380-40b8-bb36-28341ac14350&u=http%3A%2F%2F0.0.0.0%3A47101%2F> > 0.0.0.0:* LISTEN 38647/bwengine > > tcp 0 0 0.0.0.0:10801 > <https://protect2.fireeye.com/v1/url?k=5a0620fc-059d882e-5a07aa03-002590870bcc-921d5ddf6fec6227&q=1&e=9b8089c8-b380-40b8-bb36-28341ac14350&u=http%3A%2F%2F0.0.0.0%3A10801%2F> > 0.0.0.0:* LISTEN 38647/bwengine > > *tcp 6674800 0 ClientIP:49917 ServerIP:47500 > ESTABLISHED 38647/bwengine* > > udp 0 0 127.0.0.1:49634 > <https://protect2.fireeye.com/v1/url?k=639f5349-3c04fb9b-639ed9b6-002590870bcc-75bf9510e355eff1&q=1&e=9b8089c8-b380-40b8-bb36-28341ac14350&u=http%3A%2F%2F127.0.0.1%3A49634%2F> > 127.0.0.1:53 > <https://protect2.fireeye.com/v1/url?k=048f0efb-5b14a629-048e8404-002590870bcc-58dca837aa1e0fe7&q=1&e=9b8089c8-b380-40b8-bb36-28341ac14350&u=http%3A%2F%2F127.0.0.1%3A53%2F> > ESTABLISHED 38647/bwengine > > unix 2 [ ] STREAM CONNECTED 142186514 38647/bwengine > > unix 3 [ ] STREAM CONNECTED 142148803 38647/bwengine > > unix 2 [ ] STREAM CONNECTED 142053176 38647/bwengine > > unix 3 [ ] STREAM CONNECTED 142112733 38647/bwengine > > unix 3 [ ] STREAM CONNECTED 142148802 38647/bwengine > > unix 3 [ ] STREAM CONNECTED 142112732 38647/bwengine > > > > Any pointers on this would be helpful. > > > > *Thanks and Regards,* > > *Kamlesh Joshi* > > > > > "*Confidentiality Warning*: This message and any attachments are intended > only for the use of the intended recipient(s), are confidential and may be > privileged. 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