# Elasticsearch cluster display panic

**URL:** <https://discuss.elastic.co/t/elasticsearch-cluster-display-panic/153958>\
**Category:** Elasticsearch\
**Created:** [October 25, 2018, 9:30am UTC](https://discuss.elastic.co/t/elasticsearch-cluster-display-panic/153958 "2018-10-25T09:30:50Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![test987654123](https://avatars.discourse-cdn.com/v4/letter/t/ecb155/32.png) [@test987654123](https://discuss.elastic.co/u/test987654123)\
**Post date:** [October 25, 2018, 9:30am UTC](https://discuss.elastic.co/t/elasticsearch-cluster-display-panic/153958/1 "2018-10-25T09:30:50Z")

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I use elasticsearch version is 6.4.2,

display question is reject join new node

[2018-10-25T17:24:23,641][WARN][o.e.d.z.ZenDiscovery] [xyy-elastic-master-01] failed to validate incoming join request from node [{xyy-elastic-master-02}{KaD\_YJDvSI2a7K4AeKrbxA}{2XqM7JiASUmU8kOifbmLYQ}{ _dns_}{ ipLport}{xpack.installed=true}]  
org.elasticsearch.transport.RemoteTransportException: [xyy-elastic-master-02][ip:port][internal:discovery/zen/join/validate]  
Caused by: org.elasticsearch.common.io.stream.NotSerializableExceptionWrapper: buffer\_underflow\_exception: null

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/6/f/6fc72ad205493bc07133f7041f928c7cff4f91e6.png)  
my elasticsearch cluster setting is

cluster.name:  
node.name: "xyy-elastic-master-02"

# node role

node.master: true  
node.data: false  
node.ingest: false  
search.remote.connect: false  
node.ml: false

path.logs:  
http.max\_content\_length: 1024mb  
bootstrap.memory\_lock: true  
network.host: dns-name  
transport.tcp.port: 28100  
http.port: 29100  
gateway.recover\_after\_nodes: 3  
gateway.recover\_after\_time: 30s  
discovery.zen.ping.unicast.hosts:  
discovery.zen.ping\_timeout: 80s  
discovery.zen.fd.ping\_timeout: 120s  
indices.breaker.total.limit: 70%  
indices.breaker.fielddata.limit: 60%  
indices.breaker.request.limit: 10%  
network.breaker.inflight\_requests.limit: 100%  
indices.fielddata.cache.size: 50%  
indices.queries.cache.size: 10%  
indices.memory.index\_buffer\_size: 10%  
indices.requests.cache.size: 1%  
http.cors.enabled: true  
http.cors.allow-origin: "\*"  
search.default\_search\_timeout: 150s

thread\_pool.bulk.queue\_size: 4096  
thread\_pool.index.queue\_size: 1024  
thread\_pool.search.queue\_size: 1024  
thread\_pool.get.queue\_size: 1024

action.auto\_create\_index: true  
action.destructive\_requires\_name: true

# display xpack security

xpack.security.enabled: true  
xpack.ssl.key: certs/xyy-elastic-master-02.key  
xpack.ssl.certificate: certs/xyy-elastic-master-02.crt  
xpack.ssl.certificate\_authorities: certs/ca.crt  
xpack.security.transport.ssl.enabled: true  
xpack.security.http.ssl.enabled: true

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [October 25, 2018, 9:54am UTC](https://discuss.elastic.co/t/elasticsearch-cluster-display-panic/153958/2 "2018-10-25T09:54:31Z")

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Please don't post pictures of text, they are difficult to read and some people may not be even able to see them.

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [October 25, 2018, 9:57am UTC](https://discuss.elastic.co/t/elasticsearch-cluster-display-panic/153958/3 "2018-10-25T09:57:48Z")

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How have you arrived at all these non-default settings? Some of these seems like they could result in very high heap usage...

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 22, 2018, 10:00am UTC](https://discuss.elastic.co/t/elasticsearch-cluster-display-panic/153958/4 "2018-11-22T10:00:44Z")

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Closed on November 22, 2018, 10:00am UTC

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