Mongo connection string provider for Kubernetes
npm install mongo-k8s-connstrSimple node module to provide a mongo connection string when using mongo in Kubernetes. It takes a set of kubernetes labels which is used to query the kubernetes api for matching pods.
The library depends on the following environment variables.
Name | Description | Example
---- | ----------- | -------LL_MONGO_URL | If you want to set the mongo connection string manually | mongodb://127.0.0.1/shipping LL_MONGO_POD_LABELS | Pod labels used to select all the mongo servers, should be a comma separated list of key values | name=mongo,environment=dev LL_MONGO_DBNAME | Name of the database you want to connect to | shipping LL_MONGO_REPLICASET | Name of the mongo replicaset | rs0 LL_MONGO_REPLICASET_W | Write concern value (defaults to '1') | majority LL_MONGO_REPLICASET_READPREF | Read preference value (defaults to 'primary') | primaryPreferred
If LL_MONGO_URL is set, no further manipulation is done and it is returned.
Otherwise it will check the kubernetes readonly API to return all the pods and then find the pods that match the supplied
pod labels.
- handle if the mongo pods aren't up and assigned an IP yet
- tests
- filter the pods via the API