Splunk certificate expired, making kV store unable to start

Recently I met splunk Certificate expired ,splunk Of kv-store Cannot start .

1: First look at kv-store state : splunk show kvstore-status.

2: see mongo process ： ps -ef | grep mongod:

3: See the validity of the certificate ：

$SPLUNKHOME\bin\openssl x509 -enddate -noout -in $SPLUNKHOME/etc/auth/server.pem

4: Enclosed kv-store : "recovering" "starting" status Solutions for ：

1: stop splunk

2: splunk clean kvstore --local

3: splunk start

4: splunk show kvstore-status.