SonarQube is stopped

Hi,
sonarqube-7.4

  • I start the sonarqube service. it gives the following warnings and after 5-10 seconds the service stops.

ERROR
DEBUG app[o.e.c.t.TransportClientNodesService] failed to connect to node
[{#transport#-1}{MZggs08UTleVxZtiwliVig}{127.0.0.1}{127.0.0.1:9001}], ignoring…
org.elasticsearch.transport.ConnectTransportException: [127.0.0.1:9001] connect_timeout[30s]
at org.elasticsearch.transport.netty4.Netty4Transport.connectToChannels(Netty4Transport.java:362)
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: /127.0.0.1:9001
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
Caused by: java.net.ConnectException: Connection refused
… 10 common frames omitted
DEBUG app[o.s.a.p.AbstractProcessMonitor] Process exited with exit value [web]: 0
INFO app[o.s.a.SchedulerImpl] Process [web] is stopped
INFO app[o.s.a.SchedulerImpl] Process [es] is stopped
WARN app[o.s.a.p.AbstractProcessMonitor] Process exited with exit value [es]: 143
INFO app[o.s.a.SchedulerImpl] SonarQube is stopped

  • SonarQube is offline The connection to SonarQube is lost. Please contact your system administrator. [Try Again]

where should I look ?

The server has been redirected to the different IP address in the hosts file for and the SSL certificate has expired.
The problem has been fixed.

Error:
javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.Cert
PathValidatorException: timestamp check failed
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: timestamp check failed
Caused by: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: timestamp check failed
Caused by: java.security.cert.CertPathValidatorException: timestamp check failed
Caused by: java.security.cert.CertificateExpiredException: NotAfter: Mon May 13 02:59:59 GMT+03:00 2019

@Enes_Selcuk Please provide the solution , means steps to solve the above mentioned issue of sonarqube .Thanks.