1. Server suddenly card, should first consider a disk problem
1) #df -h to view disk usage
#df -i View iNode usage
2) #find / -size + 100M -exec ls -lh {} \; view of files larger than 100M
3) #echo ""> / var / log / httpd / error_log (back for my error log)
With echo command, will be redirected to an empty string specified file contents (empty)
2.session unavailable to see session.save_path is correct
echo php_info();