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MongoDB CRD Log Rotation Settings

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MongoDB Log Rotation

Application Database Log Rotation

You can configure most log rotation settings for CustomResourceDefinitions in the MongoDB and Ops Manager CRD manifests.

The following table outlines logging configuration fields that you can define in the MongoDB CRD manifests, and where they can be defined or accessed elsewhere if they can't be defined directly in the CRD manifests.

Component	Log type	Configuration location
MongoDB	Automation agent logs	`spec.agent.startupOptions`
MongoDB	Monitoring agent logs	Ops Manager API or UI
MongoDB	Backup logs	Ops Manager API or UI
MongoDB	MongoDB logs	Ops Manager UI
MongoDB	Audit logs	Ops Manager UI
MongoDB	Readiness Probe	Container Environment Variables
Application Database	MongoDB Logs	`spec.applicationDatabase.agent.logRotate`
Application Database	Automation Agent Logs	`spec.applicationDatabase.agent.startupOptions`
Application Database	Monitoring agent logs	Forwarded to `stdout` only (kubectl logs). Managed and stored in the Kubernetes control plane.
Application Database	Audit logs	`spec.applicationDatabase.agent.logRotate.includeAuditLogsWithMongoDBLogs`

MongoDB Log Rotation

You can configure a log's rotation in the MongoDB CRD, as shown in the following example manifest. See the preceding table for more information about configuring the rotation of other MongoDB-specific logs.

Automation Agent Logs

You can configure the MongoDB automation agent logs in the MongoDB CRD manifest under spec.agent.startupOptions.

Example Manifest

apiVersion: mongodb.com/v1
kind: MongoDB
metadata:
  name: log-rotate
  namespace: mongodb
spec:
  podSpec:
    podTemplate:
      spec:
        containers:
        - name: mongodb-enterprise-database
          env:
          - name: READINESS_PROBE_LOGGER_MAX_SIZE
            value: "50"
  version: 4.4.0-ent
  opsManager:
    configMapRef:
      name: my-project
  credentials: my-credentials
  type: Standalone
  persistent: false
  # https://docs.opsmanager.mongodb.com/current/reference/mongodb-agent-settings/
  agent:
    startupOptions:
      maxLogFiles: "4"
      maxLogFileDurationHrs: "1"
      maxUncompressedLogFiles: "2"

Application Database Log Rotation

You can configure the following log's rotation in the MongoDBOpsManager CRD, as shown in the following example manifest. See the preceding table for more information about configuring the rotation of other Application Database-specific logs.

MongoDB Logs

You can configure the Application Database MongoDB log rotation in the MongoDBOpsManager manifest under spec.applicationDatabase.agent.logRotate. MongoDB compresses log files beyond the two most recent logs by default.

Logs:

/var/log/mongodb-mms-automation/mongodb.log

Automation Agent Logs

You can configure the Application Database Automation Agent log rotation in the MongoDBOpsManager manifest under spec.applicationDatabase.agent.startupOptions.

Logs:

/var/log/mongodb-mms-automation/automation-agent-stderr.log
/var/log/mongodb-mms-automation/automation-agent-verbose.log
/var/log/mongodb-mms-automation/automation-agent.log

Audit Logs

You can configure the Application Database Audit log rotation in the MongoDBOpsManager manifest under spec.applicationDatabase.agent.logRotate.includeAuditLogsWithMongoDBLogs.

Logs:

/var/log/mongodb-mms-automation/mongodb-audit.log

Example Manifest

apiVersion: mongodb.com/v1
kind: MongoDBOpsManager
metadata:
  name: ops-manager
  namespace: mongodb
spec:
  replicas: 1
  version: 6.0.19
  adminCredentials: ops-manager-admin-secret
  applicationDatabase:
    version: "6.0.11-ent"
    members: 3
    agent:
      #AppDB (mongod) log rotation
      logRotate:
        numTotal: 4
        numUncompressed: 2
        timeThresholdHrs: 1
        sizeThresholdMB: "10"
      #Automation Agent log rotation
      startupOptions:
        maxLogFiles: "4"
        maxLogFileDurationHrs: "1"
        maxUncompressedLogFiles: "2"

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