Logging, Monitoring, and Debugging
Overview
There are a variety of ways in which you can log and debug the execution of platform application services, tools, and APIs.
- Logging application services (Log forwarder and Elasticsearch)
- Kubernetes tools
- Event logs
- Cluster support logs
- API error information
For further troubleshooting assistance, visit Iguazio Support.
Logging Application Services
The platform has a default tenant-wide log-forwarder application service (log-forwarder) for forwarding application-service logs.
The logs are forwarded to an instance of the Elasticsearch open-source search and analytics engine by using the open-source Filebeat log-shipper utility.
The log-forwarder service is disabled by default.
To enable it, on the log-forwarder service; in the
Typically, the log-forwarder service should be configured to work with your own remote off-cluster instance of Elasticsearch.
- The default transfer protocol, which is used when the URL doesn't begin with "
http://" or "https://", is HTTPS. - The log-forwarder service doesn't support off-cluster Elasticsearch user authentication, regardless of whether you use an HTTP or HTTPS URL.
- The default port, which is used when the URL doesn't end with "
:<port number>", is port 80 for HTTP and port 443 for HTTPS.
In cloud platform environments you can also configure the log-forwarder service to work with a tenant-wide Elasticsearch service that uses a pre-deployed on-cluster vanilla installation of Elasticsearch.
To do so, you first need to create such an Elasticsearch service:
from the
After enabling the log-forwarder service, you can view the forwarded logs in the
Kubernetes Tools
You can use the Kubernetes
- Use the
get pods command to display information about the cluster's pods:kubectl get pods - Use the
logs command to view the logs for a specific pod; replacePODwith the name of one of the pods returned by theget command:kubectl logs POD - Use the
top pod command to view pod resource metrics and monitor resource consumption; replace[POD]with the name of one of the pods returned by theget command or remove it to display logs for all pods:kubectl top pod [POD]
To run
- The
get pods andlogs commands require the "Log Reader" service account or higher. - The
top pod command requires the "Service Admin" service account.
For more information about the
Event Logs
The
- The
Event Log tab displays system event logs. - The
Alerts tab displays system alerts. - The
Audit tab displays a subset of the system events for audit purposes — security events (such as a failed login) and user actions (such as creation and deletion of a container).
The
Cluster Support Logs
Users with the IT Admin management policy can collect and download support logs for the platform clusters from the dashboard. Log collection is triggered for a data cluster, but the logs are collected from both the data and application cluster nodes.
You can trigger collection of cluster support-logs from the dashboard in one of two ways; (note that you cannot run multiple collection jobs concurrently):
- On the
Clusters page, open the action menu () for a data cluster in the clusters table (Type = "Data"); then, select theCollect logs menu option. - On the
Clusters page, select to display theSupport Logs tab for a specific data cluster — either by selecting theSupport logs option from the cluster's action menu () or by selecting the data cluster and then selecting theSupport Logs tab; then, selectCollect Logs from the action toolbar.
You can view the status of all collection jobs and download archive files of the collected logs from the data-cluster's
API Error Information
The platform APIs return error codes and error and warning messages to help you debug problems with your application. See, for example, the Error Information documentation in the Data-Service Web-API General Structure reference documentation.