C. Probes .......................................................................................................................................... 141C.1. Probe guidelines ............................................................................................................ 141C.2. Apache 1.3.x and 2.0.x.................................................................................................. 141C.2.1. Apache::Processes.......................................................................................... 142C.2.2. Apache::Traffic............................................................................................... 142C.2.3. Apache::Uptime ............................................................................................. 143C.3. BEA WebLogic 6.x and higher ..................................................................................... 143C.3.1. BEA WebLogic::Execute Queue.................................................................... 144C.3.2. BEA WebLogic::Heap Free ........................................................................... 144C.3.3. BEA WebLogic::JDBC Connection Pool ...................................................... 145C.3.4. BEA WebLogic::Server State......................................................................... 146C.3.5. BEA WebLogic::Servlet................................................................................. 146C.4. General .......................................................................................................................... 147C.4.1. General::Remote Program.............................................................................. 147C.4.2. General::Remote Program with Data ............................................................. 147C.4.3. General::SNMP Check................................................................................... 148C.4.4. General::TCP Check ...................................................................................... 149C.4.5. General::UDP Check...................................................................................... 149C.4.6. General::Uptime (SNMP) .............................................................................. 150C.5. Linux ............................................................................................................................. 150C.5.1. Linux::CPU Usage ......................................................................................... 150C.5.2. Linux::Disk IO Throughput ........................................................................... 151C.5.3. Linux::Disk Usage.......................................................................................... 151C.5.4. Linux::Inodes ................................................................................................. 152C.5.5. Linux::Interface Traffic .................................................................................. 152C.5.6. Linux::Load.................................................................................................... 153C.5.7. Linux::Memory Usage ................................................................................... 153C.5.8. Linux::Process Counts by State ..................................................................... 154C.5.9. Linux::Process Count Total ............................................................................ 154C.5.10. Linux::Process Health .................................................................................. 155C.5.11. Linux::Process Running ............................................................................... 156C.5.12. Linux::Swap Usage ...................................................................................... 156C.5.13. Linux::TCP Connections by State................................................................ 157C.5.14. Linux::Users ................................................................................................. 158C.5.15. Linux::Virtual Memory ................................................................................ 158C.6. LogAgent....................................................................................................................... 159C.6.1. LogAgent::Log Pattern Match ....................................................................... 159C.6.2. LogAgent::Log Size ....................................................................................... 160C.7. MySQL 3.23 - 3.33 ....................................................................................................... 161C.7.1. MySQL::Database Accessibility .................................................................... 161C.7.2. MySQL::Opened Tables................................................................................. 161C.7.3. MySQL::Open Tables .................................................................................... 161C.7.4. MySQL::Query Rate ...................................................................................... 162C.7.5. MySQL::Threads Running............................................................................. 162C.8. Network Services .......................................................................................................... 163C.8.1. Network Services::DNS Lookup.................................................................... 163C.8.2. Network Services::FTP .................................................................................. 163C.8.3. Network Services::IMAP Mail....................................................................... 164C.8.4. Network Services::Mail Transfer (SMTP) ..................................................... 164C.8.5. Network Services::Ping.................................................................................. 165C.8.6. Network Services::POP Mail ......................................................................... 165C.8.7. Network Services::Remote Ping .................................................................... 166C.8.8. Network Services::RPCService...................................................................... 167C.8.9. Network Services::Secure Web Server (HTTPS)........................................... 167C.8.10. Network Services::SSH................................................................................ 168C.8.11. Network Services::Web Server (HTTP)....................................................... 168