Skip to content

fix(MongoDb): Wait for post-init startup readiness before replica set initiation #1656

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
HofmeisterAn merged 1 commit into from
Mar 8, 2026
+10 −0
Merged

fix(MongoDb): Wait for post-init startup readiness before replica set initiation #1656

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 10 additions & 0 deletions src/Testcontainers.MongoDb/MongoDbBuilder.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,8 @@ private static async Task InitiateReplicaSetAsync(MongoDbContainer container, Mo
return;
}

var readiness = new WaitIndicateReadiness(configuration);

// This is a simple workaround to use the default options, which can be configured
// with custom configurations as needed.
var options = new WaitStrategy();
Expand All @@ -212,6 +214,14 @@ private static async Task InitiateReplicaSetAsync(MongoDbContainer container, Mo
return 0L.Equals(execResult.ExitCode);
};

// The official MongoDB image starts mongod twice during the first-time
// initialization (bootstrap + final process). Waiting here prevents the
// replica set from being initiated while this handover is in progress,
// which could otherwise cause the container start to fail:
// https://github.com/testcontainers/testcontainers-dotnet/issues/1636.
await WaitStrategy.WaitUntilAsync(() => readiness.UntilAsync(container), options.Interval, options.Timeout, options.Retries, ct)
.ConfigureAwait(false);

await WaitStrategy.WaitUntilAsync(initiate, options.Interval, options.Timeout, options.Retries, ct)
.ConfigureAwait(false);
}
Expand Down
Loading