Ceph is a highly scalable distributed storage system that provides object, block, and file storage. It is designed to be self-healing and self-managing, minimizing administration time and other costs. A key component of Ceph is the RADOS Gateway (RGW), which provides an object storage interface compatible with Amazon S3 and OpenStack Swift.
The symptom 'RGW_SLOW' indicates that the RADOS Gateway is experiencing slow performance. Users may notice increased latency in object storage operations, such as uploads, downloads, or metadata retrieval. This can impact applications relying on timely data access.
Slow performance in RGW can be attributed to several factors, including high load on the gateway, insufficient resources (CPU, memory, or network bandwidth), or suboptimal configuration settings. It's crucial to identify the root cause to apply the correct resolution.
High load can occur due to a large number of concurrent requests or data-intensive operations. Monitoring tools can help identify if the load is the primary cause.
Insufficient resources allocated to RGW can lead to bottlenecks. Ensuring that the gateway has adequate CPU, memory, and network resources is essential for optimal performance.
Start by analyzing RGW performance metrics using Ceph's built-in monitoring tools or external solutions like Prometheus and Grafana. Look for metrics such as request latency, throughput, and resource utilization.
ceph status to get an overview of the cluster's health.Ensure that the RGW has sufficient resources. Consider the following adjustments:
If performance issues persist, consider scaling the RGW deployment:
For more detailed guidance, refer to the following resources:
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