Unix Web Hosting for Developers

Without further ado, here are some useful MIBs: memory.memTotalSwap (4.3) The total swap on the system. Check this value before assigning limits involving swap in other MRTG graphs. memory.memAvailSwap (4.4) The amount of swap remaining. memory.memTotalReal (4.5) The total memory actually available on the system. While you don’t need to monitor this value (after all, the RAM in a system rarely changes), you should check it before setting limits in MRTG. memory.memAvailReal (4.6) The amount of unused real memory. memory.memBuffer (4.14) The amount of memory in the system buffer. memory.memCached (4.15) The amount of memory in the system cache. dskTable.dskEntry.dskTotal (9.1.6) The total size of a partition. Like the other totals, this is just for reference. This MIB will almost certainly have indexes. dskTable.dskEntry.dskAvail (9.1.7) The amount of space remaining on the disk, in blocks. dskTable.dskEntry.dskPercent The percentage of the disk in use. (9.1.9) systemStats.ssCpuUser (11.9) The percentage of the CPU time spent in non-kernel programs. systemStats.ssCpuSystem (11.10) The percentage of CPU time spent running the kernel. There are many, many more MIBs you could monitor, and entire books have been written about SNMP and monitoring. Still, these select few should cover the basic system services, and give you those important pretty pictures for your staff meeting. Monitoring a Single MIB Although MRTG is designed to monitor things in pairs, you can monitor a single MIB by listing it twice: ………………………………………………………………………………………. Target[localhost.memAvail]:.1.3.6.1.4.1.2021.4.6.0&.1.3.6.1.4.1.2021.4.6.0:GetLostLo ser@localhost ………………………………………………………………………………………. This will work just fine to show only one MIB on the MRTG graph. Note Be sure to pick a separate label for the target, and use it for all configuration statements for that target. If you don’t, MRTG will either complain or overwrite the log files from other targets. 446

Note: If you are looking for good and high quality web space to host and run your application check Lunarwebhost Linux Web Hosting services