Monday, September 10, 2018

How to create a solr core using docker-solrs image extension mechanism?

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I would like to create a docker image of solr that creates a core on startup. Therefore I'm using the docker-entrypoint-initdb.d extension mechanism described for solr docker containers. The documentation says

The third way of creating a core at startup is to use the image extension mechanism explained in the next section.

But it does not explain exactly how to achieve this.

The Dockerfile I'm using is:

FROM solr:6.6  USER root  RUN mkdir /A12Core && chown -R solr:solr /A12Core  COPY --chown=solr:solr ./services-core/search/A12Core /A12Core/ COPY --chown=solr:solr ./create-a12core.sh /docker-entrypoint-initdb.d/  USER solr  RUN chmod -R a+X /A12Core 

The folder A12Core contains the solr config files for the core. And the script create-a12core.sh to create the core is:

#!/bin/bash  solr-precreate A12Core /A12Core 

The /A12Core dir contains the following files:

./core.properties ./conf ./conf/update-script.js ./conf/mapping-ISOLatin1Accent.txt ./conf/schema.xml ./conf/spellings.txt ./conf/solrconfig.xml ./conf/currency.xml ./conf/mapping-FoldToASCII.txt ./conf/_schema_analysis_stopwords_english.json ./conf/stopwords.txt ./conf/synonyms.txt ./conf/elevate.xml ./conf/lang ./conf/lang/stopwords_en.txt ./conf/lang/stopwords_de.txt 

However when starting an image build with the above Dockerfile and script an infinite loop seems to be created. The output is:

/opt/docker-solr/scripts/solr-foreground: running /docker-entrypoint-initdb.d/create-a12core.sh Executing /opt/docker-solr/scripts/solr-precreate A12Core /A12Core /opt/docker-solr/scripts/solr-precreate: running /docker-entrypoint-initdb.d/create-a12core.sh Executing /opt/docker-solr/scripts/solr-precreate A12Core /A12Core /opt/docker-solr/scripts/solr-precreate: running /docker-entrypoint-initdb.d/create-a12core.sh Executing /opt/docker-solr/scripts/solr-precreate A12Core /A12Core /opt/docker-solr/scripts/solr-precreate: running /docker-entrypoint-initdb.d/create-a12core.sh ... 

How do I create a core using the docker-entrypoint-initdb.d extension mechanism?

1 Answers

Answers 1

Provide precreate-core file location which is to be executed, so edit create-a12core.sh as given below

 #!/bin/bash  /opt/docker-solr/scripts/precreate-core  A12Core /A12Core 

Tested and Works !!!

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