# Master node not discovered yet after upgrade from 6.8 to 7.10 **URL:** \ **Category:** Elasticsearch\ **Created:** [December 16, 2020, 9:47pm UTC](https://discuss.elastic.co/t/master-node-not-discovered-yet-after-upgrade-from-6-8-to-7-10/258915 "2020-12-16T21:47:16Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![David\_Tomasheski](https://avatars.discourse-cdn.com/v4/letter/d/59ef9b/32.png) [@David\_Tomasheski](https://discuss.elastic.co/u/David_Tomasheski)\ **Post date:** [December 16, 2020, 9:47pm UTC](https://discuss.elastic.co/t/master-node-not-discovered-yet-after-upgrade-from-6-8-to-7-10/258915/1 "2020-12-16T21:47:16Z")
In order to deal with the Chrome Samesite cookies issue I have just upgraded ES and Kibana from 6.7 to 6.8 and that went fine. I then went to upgrade ES to 7.10 and now I am getting The below error message. I had followed the upgrade assistant and it said everything was good. I'm not sure what is wrong at this point. I only have one cluster so I thought this should be a fairly straightforward process. ` [2020-12-16T15:30:16,135][WARN][o.e.c.c.ClusterFormationFailureHelper] [carver] master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and [cluster.initial_master_nodes] is empty on this node: have discovered [{carver}{8BOSPkwyTcuSgANt_lJHIw}{lqjXj1VwRBmge-b0QOsiuw}{127.0.0.1}{127.0.0.1:9300}{cdhilmrstw}{ml.machine_memory=7673040896, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}]; discovery will continue using [] from hosts providers and [{carver}{8BOSPkwyTcuSgANt_lJHIw}{lqjXj1VwRBmge-b0QOsiuw}{127.0.0.1}{127.0.0.1:9300}{cdhilmrstw}{ml.machine_memory=7673040896, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}] from last-known cluster state; node term 0, last-accepted version 3785 in term 0` ---
**Author:** ![David\_Tomasheski](https://avatars.discourse-cdn.com/v4/letter/d/59ef9b/32.png) [@David\_Tomasheski](https://discuss.elastic.co/u/David_Tomasheski)\ **Post date:** [December 17, 2020, 8:01pm UTC](https://discuss.elastic.co/t/master-node-not-discovered-yet-after-upgrade-from-6-8-to-7-10/258915/2 "2020-12-17T20:01:28Z")
I decided to roll back to 6.8 which didn't work either so i reupgraded and everything magically worked. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 14, 2021, 8:01pm UTC](https://discuss.elastic.co/t/master-node-not-discovered-yet-after-upgrade-from-6-8-to-7-10/258915/3 "2021-01-14T20:01:30Z")
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