adding new stuff for mongo

[mfreeman451]

Summary by CodeRabbit

• New Features
  • Introduced new performance tuning capabilities for MongoDB deployments. These enhancements automatically optimize key system settings—improving memory management and reducing swap usage—to better support resource-intensive operations across the environment.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

This change introduces two Kubernetes YAML configurations to update system control parameters for MongoDB. A new ConfigMap named mongodb-sysctl is defined, containing the sysctl settings in the 99-mongodb.conf file. Additionally, a DaemonSet called mongodb-sysctl-daemonset is added to deploy a privileged container that mounts the ConfigMap and applies the sysctl configurations on each node using the busybox:latest image.

Changes

File Path	Change Summary
k8s/mongodb/base/sysctl-config.yaml	Added a ConfigMap mongodb-sysctl that provides sysctl parameters (vm.max_map_count=262144 and vm.swappiness=0) via 99-mongodb.conf.
k8s/mongodb/base/sysctl-daemonset.yaml	Introduced a DaemonSet mongodb-sysctl-daemonset that runs a privileged container (sysctl-setter with busybox:latest), mounting the ConfigMap and executing sysctl commands.

Sequence Diagram(s)

sequenceDiagram
    participant K8s as Kubernetes Cluster
    participant DS as mongodb-sysctl-daemonset
    participant BC as sysctl-setter Container
    participant Host as Host OS

    K8s->>DS: Schedule DaemonSet on all nodes
    DS->>BC: Launch privileged container (busybox)
    BC->>Host: Mount ConfigMap (/etc/sysctl.d)
    BC->>Host: Execute sysctl commands (apply vm.max_map_count & vm.swappiness)
    Host-->>BC: Confirm sysctl settings updated

Loading

Poem

I'm a bouncy rabbit, coding with delight,
Deploying configs that set parameters right.
A ConfigMap and DaemonSet, all set to run,
Busybox hops in—modifying, just for fun!
In Kubernetes fields, with sysctl serenade,
MongoDB's performance is now finely made.
Hoppy days ahead in this bright cascade!

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📜 Recent review details

Configuration used: CodeRabbit UI
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📥 Commits

Reviewing files that changed from the base of the PR and between fb5d9c3 and 952e92d.

📒 Files selected for processing (2)

• k8s/mongodb/base/sysctl-config.yaml (1 hunks)
• k8s/mongodb/base/sysctl-daemonset.yaml (1 hunks)

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