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- i-scream - screenshots-(or the two minute - tour)- -This page provides a sequence of - screenshots to help you to gain a better understanding of the i-scream - distributed central monitoring system and how it may be applied in - networked environments. Click on the thumbnails to view the full - size screenshots. -
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- Reports Centre
- (Web) - The i-scream reports centre provides a central access point to all - web-based reports that are provided by the i-scream system. Reports - are available to display information about the current status of an - individual machine and any alerts pertaining to either an individual - machine, or a summary of alerts for all machines. Historical - information about monitored machines may also be accessed from this point. -
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- Latest Information
- (Web) - Here we are viewing the latest information provided by a host. Bars - are used to represent values such as disk space and free memory as this - makes it easier to spot casual problems. The small graph icons link - to historical reports of each field for the previous day. The choice - of fields to display on this page is stored in a separate configuration - file. -
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- Conient (Multiplatform
- real-time client) - Conient is a real-time client that - can hook into an i-scream server to allow the user to view host - information as it passes through the server. The client displays - information provided by the hosts as well as the results of service checks - performed by the server on each host (eg FTP, Telnet, etc). Conient - is written in Java and can thus be run on most operating systems. -
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- Conient (Viewing
- extra data) - Less important host information may be viewed in a seperate window to - avoid clutter in Conient's display. Details of the protocol for - host-to-server communications are freely available to developers. - The protocol itself is extensible and client programs such as Conient - display even unrecognised data from modified host programs. -
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- Conient
- (Configuration) - Conient is fully configurable from within the program itself. - Multiple configurations may be saved. Conient can also be configured - to connect to a server through a firewall via an SSH tunnel or suchlike. -
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- ihost (Unix/Linux
- host) - The ihost is currently the main Unix/Linux/FreeBSD host application for - i-scream. ihost is centrally configured by the server it connects to - and periodically sends information about the machine on which it is - running. The ihost is written in Perl, so can be easily altered to - send extra information to your i-scream server. -
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- WinHost (Windows
- host) - The WinHost is similar in concept to the ihost, however, this one runs on - Windows NT/2000 servers. Again, the configuration is dynamically - obtained from the server. The WinHost is typically only present in - the Windows system tray. Double clicking on the system tray icon - will bring up a small window that allows data to be viewed and to force - reconfiguration with the server. -
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- Alerts (Email) - The i-scream server includes many alerting mechanisms. Simple email - alerts may be sent out if desired. Alert levels and frequencies may - be configured for the server. This screenshot shows the format of a - typical alert; the contents of which are of course configurable. -
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- Alerts (IRC bot) - Another i-scream alerter comes in the form of an interactive IRC bot. - This may reside in an IRC (Internet relay chat) channel and broadcasts - alerts if told to do so. This screenshot shows a typical interaction - with a user in the "Bersirc" IRC client. -
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- Alerts (Web page) - Individual alerts and a summary of all alerts raised by the i-scream - server may be viewed on the alerts web pages. These show the - different levels of alerts in configurable colours and provides specific - details about the alerts being raised for each machine. -
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- Alerts (Public
- helpdesk display) - The reports centre also provides a - page that may be useful in configuring non-interactive public displays of - alerts. These displays automatically refresh the page periodically - and supported web browsers may also automatically scroll the page to allow - a large font to be employed for easier reading from a distance. -
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- Conient (Server queue
- monitoring) - The Conient client may also be used - to monitor information about the i-scream server itself. Here we are - viewing the status of the internal queues within the server. This - shows that the server is performing healthily and that there are no - bottlenecks. |
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- Historical reports
- (Web) - Historical information is collated - by the i-scream server into (typically) a MySQL database. A separate - program is used to produce the historical web reports These may be browsed - via this web-based interface (see screenshot). The reports to be - generated for each machine and the size of the page are of course - configurable. -
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- Historical reports
- (Metadata) - The historical report generation - also produces a number of other files that may be useful for third party - analysis tools. The chart itself is written as a GIF image, as well - as a small file suitable for including on PHP pages that specifies the - minimum and maximum values during the 24 hour period. A file - containing the raw plot data is also produced to enable the use of third - party on-the-fly plotting tools. -
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- The i-scream server - The server is distributed and may - therefore have multiple points of data entry and run on more than one - machine. This helps to reduce the amount of host traffic over large - networks and reduces potential bottlenecks. The server is written in - Java to allow it to run on most operating systems. This exciting - screenshot shows the i-scream server running ;-) -
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