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Local mongodb cluster

Set up mongodb cluster with 1 primary and 2 replicas. I used this tutorial [1] for setting up local mongodb cluster.

My focus is not on setting up mongodb cluster but on code reusing in docker-compose using YAML feature called anchors. As per this tutorial [2][3], under section EXTRA YAML FEATURES

YAML also has a handy feature called 'anchors', which let you easily duplicate content across your document. Both of these keys will have the same value:

anchored_content: &anchor_name # This string will appear as the value of two keys.
other_anchor: *anchor_name

Medium: https://medium.com/@anasanjaria/code-reuse-in-docker-compose-using-yaml-anchor-feature-6cb2ff1d0427

How to start local mongodb cluster?

  • Run the following command
docker-compose up -d
  • After 5s, run the following command to form cluster.
docker exec mongo-test-2 /initdb-script/init.sh

Resources

[1] https://blog.tericcabrel.com/mongodb-replica-set-docker-compose/

[2] https://learnxinyminutes.com/docs/yaml/

[3] https://stackoverflow.com/a/45805673