SuPHP on cPanel
Learn to install SuPHP on cPanel via EasyApache 4, manage file permissions, troubleshoot 500 errors using suphp_log, and set custom PHP options with .user.ini.
Troubleshooting
- 7 min read
Using the Netstat command
Learn to use the netstat command to view network connections, troubleshoot services, and check listening ports on your server.
- 10 min read
Troubleshooting Guide: PHP-FPM and max_children
Fix slow sites by troubleshooting PHP-FPM max_children on cPanel, Plesk, & InterWorx. Learn to find logs, adjust settings safely, & check server resources.
- 5 min read
System activity reporting with sar
sar monitors Linux system activity (CPU, memory, I/O) over time. It’s crucial for historical performance analysis and troubleshooting server bottlenecks.
- 3 min read
Understanding IOwait
Learn what IOwait is, why it slows servers, and how to identify the processes causing it using iostat, block_dump, and iotop tools.
- 10 min read
Understanding lsof
lsof lists open files, network connections, and processes. Essential for troubleshooting ports, finding resource hogs, and monitoring activity.
- 3 min read
Testing Network Performance with iperf
iperf is a network troubleshooting tool. It measures bandwidth, delay, jitter, and packet loss between two points, helping diagnose network performance.
- 4 min read
Monitoring Disk I/O with iostat
iostat monitors server disk I/O and CPU. It helps identify storage bottlenecks using metrics like request size, queue depth, wait times, and device utilization.
- 5 min read
Monitoring Your Server with htop
htop: Your server’s intuitive monitor. See CPU/memory, processes, and troubleshoot with interactive sorting, filtering, and direct process management.
- 2 min read
Testing Your Network’s Speed and Reliability
Test your network speed and connectivity using Liquid Web’s test files (10MB-1000MB) from Lansing, Phoenix, and Amsterdam, plus ping tests and Looking Glass for diagnostics.