Linux OOM Killer

JD Retail Technology

Oct 27, 2023 · Operations

Investigation of Java Service Crashes at Midnight Due to Cron and Open Files Limit in CentOS Containers

The article analyzes why a Java service repeatedly crashes around midnight in test environments, tracing the issue through system limits, Java version checks, cron job execution, strace logs, and Linux OOM killer behavior, and finally proposes configuration and version upgrades to prevent the failures.