Did the node finish starting when you checked the "nodetool status" output? Try "nodetool netstats" on the starting node, the output will show "Mode: NORMAL" if it has finished starting. It's also worth checking the "nodetool info" output, and make sure "Gossip active" and "Native Transport active" (unless you have disabled it) are "true".

On 23/09/2022 08:17, Marc Hoppins wrote:
Hi all,

Restarting the service on a node.  Checking status from a remote node, I see:

(prod) marc.hoppins.ipa@ba-cassandra01:~ $ /opt/cassandra/bin/nodetool status 
-r|grep 03
UN  ba-cassandra09   779.03 GiB   16      ?     
1fc8061d-2dd4-4b2c-97fa-e492063da495  SSW09
UN  ba-cassandra20   796.94 GiB   16      ?     
c6b43e76-bd5d-4672-a62a-83a06030578d  SSW09
UN  ba-cassandra10   750.84 GiB   16      ?     
c03ae9c6-89cb-4e65-a1ef-a56e2efc24da  SSW09
UN  ba-cassandra04   785.97 GiB   16      ?     
16dac20f-89fe-435c-8b49-d80a03fe239e  SSW09
DN  ba-cassandra03   729.43 GiB   16      ?     
8785b173-6b68-45a4-ad38-e9b4036ffaf5  SSW09
UN  dr1-cassandra18  738.9 GiB    16      ?     
84348044-b6c6-44d0-9038-b1d49d39e496  SSW02
UN  dr1-cassandra03  783.04 GiB   16      ?     
21dac8e4-b556-48f1-873d-fb2876e2c349  SSW02

But when checking locally, I see:

?N  ba-cassandra08   ?           16      ?     
8520bdcd-1cfb-431f-a99c-15b8ca288e96  SSW09
?N  ba-cassandra04   ?           16      ?     
16dac20f-89fe-435c-8b49-d80a03fe239e  SSW09
?N  ba-cassandra11   ?           16      ?     
cf010de0-657c-4135-beec-7ba37cc3d8f4  SSW09
?N  ba-cassandra18   ?           16      ?     
994c67d7-e6f9-4419-a02b-b5296ec92cb0  SSW09
UN  ba-cassandra03   146.03 GiB  16      ?                                      
     SSW09
?N  ba-cassandra21   ?           16      ?     
7a8fc8c4-fb64-4bb7-ad5c-cb5112d9f783  SSW09
?N  ba-cassandra13   ?           16      ?     
853f095a-c780-473d-85f0-b8d047d745f1  SSW09

When I recheck it, I notice that the data count increases to the correct amount 
after some small time, the node ID appears for the local status, and the remote 
status shows as UN.  If the remote status shows the node ID, why is it missing 
locally?   Is the node ID only stored on the seeds?

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