Lessons Learned from Monitoring 112+ HPE Servers
As part of a Managed Services & Operational project at PT. Bringin Inti Teknologi (Bitcorp), I have been involved in operating and monitoring more than 112 HPE servers running in an enterprise Cloudera environment.
The infrastructure was primarily monitored using HPE OneView and iLO, while Grafana and Zabbix were used to collect metrics, visualize resource utilization, and support operational analysis.
My Responsibilities
My daily responsibilities included:
- Monitoring and maintaining 112+ HPE servers using HPE OneView and iLO
- Installing and administering Red Hat Enterprise Linux (RHEL)
- Investigating hardware alerts and system events
- Troubleshooting operating system and networking issues
- Deploying and configuring Zabbix Agents
- Integrating servers into the monitoring platform
- Performing HPE iLO firmware upgrades
- Collecting infrastructure logs and utilization metrics
- Generating CPU and memory utilization reports
- Supporting server maintenance and operational activities
Monitoring Beyond Dashboards
One of the lessons I learned during this project is that infrastructure monitoring is much more than simply watching dashboards.
Daily monitoring activities involved reviewing server health, checking hardware status, analyzing logs, and ensuring that systems remained stable and available.
For deeper hardware investigation, iLO provided access to server diagnostics, hardware event logs, sensor information, and remote management capabilities.
Common Hardware Alerts
Several hardware-related issues were encountered during daily operations, including:
Disk Failures
Storage alerts often indicated degraded disks or potential hardware failures. These situations required verification and coordination for component replacement.
NIC Failures
Network Interface Card failures could impact server connectivity and service availability. Troubleshooting was required to identify affected interfaces and validate network functionality after maintenance.
SFP Module Issues
Faulty or disconnected SFP modules occasionally generated alerts that required inspection and replacement to restore stable network communication.
Capacity and Utilization Reporting
Besides monitoring server health, I frequently received requests to analyze infrastructure utilization and prepare monthly operational reports.
These reports typically included:
- Top 10 servers with the highest CPU utilization
- Top 10 servers with the highest memory utilization
- Monthly resource utilization trends
- Infrastructure growth and capacity observations
To produce these reports, I collected and analyzed data from Grafana and HPE OneView.
The information helped teams understand resource consumption patterns, identify heavily utilized systems, and support future capacity planning decisions.
Additional Operational Activities
Beyond monitoring activities, I also participated in several infrastructure maintenance tasks:
- Upgrading HPE iLO firmware
- Installing and configuring Zabbix Agents
- Registering monitored servers into the Zabbix platform
- Validating monitoring data collection after deployment
- Supporting server maintenance activities
These tasks helped improve monitoring visibility and maintain operational consistency across the infrastructure environment.
A Real-World Troubleshooting Experience
One operational challenge occurred during an operating system upgrade where an existing network bonding configuration became detached from its associated interfaces.
After reviewing the network configuration, the issue was resolved by reconfiguring the bonding setup using nmcli commands and validating connectivity after the changes were applied.
This experience reinforced the importance of understanding Linux networking in addition to infrastructure monitoring.
Key Takeaways
Working in a large-scale enterprise infrastructure environment taught me several valuable lessons:
- Monitoring requires understanding hardware, operating systems, networking, and troubleshooting processes.
- Early detection of hardware issues helps reduce downtime and operational risks.
- Capacity monitoring is important for identifying resource trends and planning future growth.
- Tools such as HPE OneView, iLO, Grafana, and Zabbix provide complementary visibility into infrastructure health.
- Reliable infrastructure depends on consistent monitoring, maintenance, and operational discipline.
This experience strengthened my skills in infrastructure operations, Linux administration, hardware troubleshooting, monitoring systems, and capacity analysis. It also gave me a deeper understanding of how enterprise environments maintain reliability and performance at scale.