Hi All,

We are using solr cloud (V8.8.2). Yesterday we noticed this error from 3 am to 
4am
PKIAuthenticationPlugin : Invalid Keyrequest timestamp:1638906938935, received 
timestamp : 1638906962821 TTL:15000

Also, during indexing, we are having the exception  “No live SolrServers 
available to handle this request : https://x.x.x.x:3993 <https://x.x.x.x:3993/> 
and https://x.x.x.x:9983 <https://x.x.x.x:9983/>
But when we check through the solr cloud admin UI, the nodes are all green and 
active.

Exception occurs when we call this line — QueryREsponse response = 
client.query(params).

Client is SolrClient and params values are set as below
ModifiableSolrParams params = new ModifiableSolrParams();
params.set(“qt”,corename);
params.set(“command”,”INDEX”);

Exception caused by org.apache.solr.client.solrj.solrserverexception: No live 
SolrServers available to handle this request : https://x.x.x.x:3993 
<https://x.x.x.x:3993/> and https://x.x.x.x:9983 <https://x.x.x.x:9983/>
At org.apache.solr.client.solrj.impl.LBSolrclient.request(LBSolrClient.java:346)
..
..
..
..
At org.apache.solr.client.solrj.solrclient.query(solrclient.jav:1018)

Much appreciate your advise. Please note haven’t encountered this error anytime.

Thanks
Reej

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