Cheap Dedicated Server -Management,Server Monitoring

Server Monitoring

Cheap dedicated Server Monitor is Apple's IPMI-based tool for communicating with a remote baseboard management controller (BMC) that implements their lights-out management (LOM) system. It is available as part of the dedicated server admin tools package on a CD with the server software and as a download from their website. It can manage their Xserve line of  dedicated server  which are currently their only product line that has such an LOM solution.

Internet server monitoring:

Internet server monitoring is much wider than website monitoring. Monitoring a web server means that the  dedicated server  owner always knows if one or all of his services go down. Web server monitoring may be internal, i.e. web server software checks its status and notifies the owner if some services go down, and external, i.e. some web server monitoring companies check the services status with a certain frequency. External monitoring is much more reliable, as it keeps on working when the  dedicated server completely goes down.


Various protocols:

Web server monitoring service can check HTTP pages, HTTPS, FTP, SMTP, POP3, IMAP, DNS, SSH, Telnet, SSL, TCP, PING and a range of other protocols with great variety of check intervals from every 4 hours to every one minute. Typically, most website monitoring services test a  dedicated server  anywhere between once-per hour to once-per-minute.


Web server monitoring process:

When monitoring a web server for potential problems, an external web monitoring service checks a number of parameters. First of all, it monitors for a proper HTTP return code. By HTTP specifications RFC 2616, any web server returns several HTTP codes. Analysis of the HTTP codes is the fastest way to determine the current status of the monitored web server.

Network monitoring:

While an intrusion detection system monitors a network for threats from the outside, a network monitoring system monitors the network for problems caused by overloaded and/or crashed servers, network connections or other devices.

For example, to determine the status of a web server, monitoring software may periodically send an HTTP request to fetch a page. For email servers, a test message might be sent through SMTP and retrieved by IMAP or POP3.

Commonly measured metrics are response time, availability and uptime, although both consistency and reliability metrics are starting to gain popularity. The widespread addition of WAN optimization devices is having an adverse effect on most network monitoring tools -- especially when it comes to measuring accurate end-to-end response time because they limit round trip visibility.

Status request failures - such as when a connection cannot be established, it times-out, or the document or message cannot be retrieved - usually produce an action from the monitoring system. These actions vary -- an alarm may be sent (via SMS, email, etc.) to the resident sysadmin, automatic failover systems may be activated to remove the troubled server from duty until it can be repaired, etc.

Monitoring the performance of a network uplink is also known as network traffic measurement, and more software is listed there.

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