SonarQube in Docker failes to resolve local host - docker

Question

I'm attempting to set up SonarQube in Docker using an Alpine Linux Docker Image. However, when running the image, SonarQube seems to have problem resolving local host. Has anyone experienced this issue before?
Help with this issue would be greatly appreciated!
Dockerfile
FROM gliderlabs/alpine:3.2
ENV SONAR_VERSION=5.6.1 \
SONARQUBE_HOME=/opt/sonarqube \
SONARQUBE_FORCE_AUTHENTICATION=true \
# Database configuration
# Defaults to using H2
SONARQUBE_JDBC_USERNAME=sonar \
SONARQUBE_JDBC_PASSWORD=sonar \
SONARQUBE_JDBC_URL=
# Http port
EXPOSE 9000
RUN apk -Uu add gnupg curl \
&& rm -rf /var/cache/apk/*
# pub 2048R/D26468DE 2015-05-25
# Key fingerprint = F118 2E81 C792 9289 21DB CAB4 CFCA 4A29 D264 68DE
# uid sonarsource_deployer (Sonarsource Deployer) <infra#sonarsource.com>
# sub 2048R/06855C1D 2015-05-25
RUN gpg --keyserver ha.pool.sks-keyservers.net --recv-keys F1182E81C792928921DBCAB4CFCA4A29D26468DE
RUN set -x \
&& mkdir /opt \
&& cd /opt \
&& curl -o sonarqube.zip -fSL https://sonarsource.bintray.com/Distribution/sonarqube/sonarqube-$SONAR_VERSION.zip \
&& curl -o sonarqube.zip.asc -fSL https://sonarsource.bintray.com/Distribution/sonarqube/sonarqube-$SONAR_VERSION.zip.asc \
&& gpg --batch --verify sonarqube.zip.asc sonarqube.zip \
&& unzip sonarqube.zip \
&& mv sonarqube-$SONAR_VERSION sonarqube \
&& rm sonarqube.zip* \
&& rm -rf $SONARQUBE_HOME/bin/*
VOLUME ["$SONARQUBE_HOME/data", "$SONARQUBE_HOME/extensions"]
WORKDIR $SONARQUBE_HOME
COPY run.sh $SONARQUBE_HOME/bin/
ENTRYPOINT ["./bin/run.sh"]
./bin/run.sh
#!/bin/sh
set -e
if [ "${1:0:1}" != '-' ]; then
exec "$#"
fi
exec java -jar lib/sonar-application-$SONAR_VERSION.jar \
-Dsonar.log.console=true \
-Dsonar.jdbc.username="$SONARQUBE_JDBC_USERNAME" \
-Dsonar.jdbc.password="$SONARQUBE_JDBC_PASSWORD" \
-Dsonar.jdbc.url="$SONARQUBE_JDBC_URL" \
-Dsonar.web.javaAdditionalOpts="$SONARQUBE_WEB_JVM_OPTS -Djava.security.egd=file:/dev/./urandom" \
"$#"
Docker log
016.08.31 07:56:45 INFO es[o.s.p.ProcessEntryPoint] Starting es
2016.08.31 07:56:45 INFO es[o.s.s.EsSettings] Elasticsearch listening on 127.0.0.1:9001
2016.08.31 07:56:45 INFO es[o.elasticsearch.node] [sonar-1472630204100] version[1.7.5], pid[18], build[00f95f4/2016-02-02T09:55:30Z]
2016.08.31 07:56:45 INFO es[o.elasticsearch.node] [sonar-1472630204100] initializing ...
2016.08.31 07:56:45 INFO es[o.e.plugins] [sonar-1472630204100] loaded [], sites []
2016.08.31 07:56:45 INFO es[o.elasticsearch.env] [sonar-1472630204100] using [1] data paths, mounts [[/opt/sonarqube/data (/dev/vda2)]], net usable_space [55gb], net total_space [59gb], types [ext4]
2016.08.31 07:56:46 WARN es[o.e.bootstrap] JNA not found. native methods will be disabled.
2016.08.31 07:56:47 INFO es[o.elasticsearch.node] [sonar-1472630204100] initialized
2016.08.31 07:56:47 INFO es[o.elasticsearch.node] [sonar-1472630204100] starting ...
2016.08.31 07:56:47 WARN es[o.e.common.network] failed to resolve local host, fallback to loopback
java.net.UnknownHostException: 05ae620efc22: 05ae620efc22: unknown error
at java.net.InetAddress.getLocalHost(InetAddress.java:1505) ~[na:1.8.0_72]
at org.elasticsearch.common.network.NetworkUtils.<clinit>(NetworkUtils.java:55) ~[elasticsearch-1.7.5.jar:na]
at org.elasticsearch.transport.netty.NettyTransport.createClientBootstrap(NettyTransport.java:350) [elasticsearch-1.7.5.jar:na]
at org.elasticsearch.transport.netty.NettyTransport.doStart(NettyTransport.java:242) [elasticsearch-1.7.5.jar:na]
at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:85) [elasticsearch-1.7.5.jar:na]
at org.elasticsearch.transport.TransportService.doStart(TransportService.java:153) [elasticsearch-1.7.5.jar:na]
at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:85) [elasticsearch-1.7.5.jar:na]
at org.elasticsearch.node.internal.InternalNode.start(InternalNode.java:257) [elasticsearch-1.7.5.jar:na]
at org.sonar.search.SearchServer.start(SearchServer.java:46) [sonar-search-5.6.1.jar:na]
at org.sonar.process.ProcessEntryPoint.launch(ProcessEntryPoint.java:102) [sonar-process-5.6.1.jar:na]
at org.sonar.search.SearchServer.main(SearchServer.java:81) [sonar-search-5.6.1.jar:na]
Caused by: java.net.UnknownHostException: 05ae620efc22: unknown error
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) ~[na:1.8.0_72]
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) ~[na:1.8.0_72]
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) ~[na:1.8.0_72]
at java.net.InetAddress.getLocalHost(InetAddress.java:1500) ~[na:1.8.0_72]
... 10 common frames omitted

Answer 1

May be there is no Name Service Switch file in Alpine linux, and java need one for java.net.InetAddress.getLocalHost for example.
Add this line in dockerfile
RUN echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' > /etc/nsswitch.conf

Answer 2

Since InetAddress.html#getLocalHost will "retrieving the name of the host from the system", make sure you launch your container with an hostname.
docker run --add-host xxx --hostname yyy
See docker run Network Settings for --add-host and --hostname options

Answer 3

I run into a same like issue on k8s and resolved by providing an environment variable to force the DB bind to 127.0.0.1
kubectl run sonarqube --image=sonarqube --port=9092 --env="SONARQUBE_WEB_JVM_OPTS=-Xmx512m -Xms128m -XX:+HeapDumpOnOutOfMemoryError -Dh2.bindAddress=127.0.0.1"