How to configure spring-data-mongodb to use a replica set via properties
Solution 1
There is no explicit support for that, no. But you should be able to configure that just fine via the uri
parameter.
We've actually updated the documentation recently.
Solution 2
I had a similar problem and I dug into the MongoProperties::createMongoClient()
code and found that the code was ignoring the uri value if there were any values configured for spring.data.mongodb.host
, spring.data.mongodb.port
, spring.data.mongodb.username
or spring.data.mongodb.password
.
If I put all that information in the URI (and removed all the other spring.data.mongodb.*
values from the property file), the connection code worked.
The URI property setting ended up looking like this:
mongodb://username:mypasswd@hostname1:27017,hostname2:27017,hostname3:27017/dbname
The docs for formatting your URI value are here.
Solution 3
Change application.properties from this:
spring.data.mongodb.host=server1
spring.data.mongodb.port=27017
spring.data.mongodb.authentication-database=system
spring.data.mongodb.database=database
...to this:
spring.data.mongodb.uri=mongodb://username:password@server1:port,server2:port/database
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incredibleholg
I help startups and SMBs to start and improve their digital projects. In over 15 years of professional software development, I did my fair share of backend development with Kotlin, Java, Spring and relational databases like PostgreSQL. Now, my company helps you and your products to get more digital, more successful and ready for the future.
Updated on July 09, 2022Comments
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incredibleholg almost 2 years
I am currently writing an application which should use a replica set of MongoDB. It is a Spring Boot based application and the following properties work perfectly fine to connect to one server:
spring.data.mongodb.host=localhost spring.data.mongodb.port=27017 spring.data.mongodb.database=demo
This is absolutely fine for my local dev environment. But later on it should run against a MongoDB replica set, so I have to provide at least 2, better 3 replica set seeds, but how can I do this with properties?
I had a look on this page: http://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html, but there is no explicit property for replica sets mentioned. Providing a comma separated list of addresses like this:
spring.data.mongodb.host=127.0.0.1,127.0.1.1,127.0.2.1 spring.data.mongodb.uri=mongo://127.0.0.1,mongo://127.0.0.1:27018
(I tried one after another.)
This is also not working (in fact, it produces an exception which lets Spring uses the default configuration).
I also tried to use the following config.xml, with no luck:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mongo="http://www.springframework.org/schema/data/mongo" xsi:schemaLocation= "http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <mongo:mongo id="replicaSetMongo" replica-set="127.0.0.1:27017,localhost:27018"/> </beans>
I know that the above configs are slightly different, but what I am currently trying is to get an exception which is showing me that no replica set node was reachable.
Any ideas, hints?
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jmathewt about 4 yearsIf you are using mongo atlas, this post will be helpful - opencodez.com/java/use-mongodb-atlas-with-spring-boot.htm
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incredibleholg almost 9 yearsThanks for your answer Stephane. Which version is of Spring Data Mongo is supporting this sort of configuration property?
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incredibleholg over 8 yearsOk, I finally got some time to check this. It seems to work. But the log messages are not very clear about clusters (hopefully I will find some time to investigate and log an issue) Anyway, thanks for your quick help!
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incredibleholg over 8 yearsThanks for commenting, I completely forgot to add this. Indeed, if any of the mentioned values is set, the URI is ignored.
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Sameesh almost 4 yearscan you please tell where to add authentication database name in here?
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Fernando about 3 yearswhen connecting to a replica set reads by default will be done from primary node unless explicitly specified to read from secondary right?
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Fernando about 3 yearsdoes the replset option flag has to be specified?. What happens if not specified?