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Pod Stuck in CrashLoopBackOff
Database connection timeout
Docker Container won't Start
Kubernetes ingress not working
Redis connection refused
CI/CD pipeline failing
ScyllaDB NodeShutdownFailure
A node failed to shut down properly, possibly due to ongoing operations or configuration issues.
Understanding ScyllaDB
ScyllaDB is a high-performance NoSQL database designed for low latency and high throughput. It is compatible with Apache Cassandra and is used for handling large volumes of data with minimal latency. ScyllaDB is particularly popular for real-time big data applications, offering features like shard-per-core architecture and automatic tuning.
Identifying the Symptom: Node Shutdown Failure
One common issue that ScyllaDB users may encounter is a node failing to shut down properly. This issue is typically observed when a node does not terminate as expected during maintenance or scaling operations. Users might notice that the node remains active or unresponsive to shutdown commands.
Details About the Node Shutdown Failure Issue
The Node Shutdown Failure in ScyllaDB can occur due to various reasons, such as ongoing operations that prevent the node from terminating, or configuration settings that interfere with the shutdown process. This issue can lead to inconsistencies in the cluster and affect the overall performance of the database.
Common Causes
- Ongoing read/write operations that are not completed.
- Misconfigured settings that prevent proper shutdown.
- Network issues causing delays in shutdown signals.
Steps to Resolve Node Shutdown Failure
To resolve the Node Shutdown Failure issue in ScyllaDB, follow these steps:
Step 1: Check for Ongoing Operations
Before attempting to shut down a node, ensure that there are no ongoing operations. You can use the nodetool utility to check the status of operations:
nodetool netstats
If there are pending operations, wait for them to complete or manually terminate them if necessary.
Step 2: Verify Configuration Settings
Review the configuration settings in the scylla.yaml file to ensure they are correct. Pay special attention to settings related to shutdown and network configurations. Refer to the ScyllaDB Configuration Guide for detailed information.
Step 3: Retry the Shutdown Operation
Once you have ensured there are no ongoing operations and the configuration is correct, retry the shutdown operation using the following command:
sudo systemctl stop scylla-server
Monitor the logs to confirm that the node shuts down properly.
Additional Resources
For further assistance, consider exploring the following resources:
By following these steps and utilizing the resources provided, you can effectively resolve the Node Shutdown Failure issue in ScyllaDB and ensure smooth operation of your database cluster.
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