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Tony Roman
c14d75d978
git-svn-id: svn+ssh://repo.cacti.net/var/data/svnroot/cacti/cacti/branches/0.8.8@7400 860744bd-22fc-0310-8c96-e9fe5004b5ca
82 lines
3.4 KiB
Plaintext
82 lines
3.4 KiB
Plaintext
Cacti Readme File
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REQUIREMENTS:
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Cacti should be able to run on any Unix-based operating system with
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the following requirements:
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PHP 5.1+
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MySQL 5.0+
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RRDTool 1.0.49+, 1.4+ recommended
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NET-SNMP 5.2+
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Web Server that supports PHP
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PHP Must also be compiled as a standalone cgi or cli binary. This is required
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for data gathering in crontab.
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A Note About RRDtool:
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RRDTool is available in multiple versions and a majority of them are supported
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by Cacti. Please remember to confirm your Cacti settings for the RRDtool
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version if you having problem rendering graphs.
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Also important to note in version Cacti 0.8.6h and above, graph items with
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no color assigned are now properly presented to RRDTool. The upgraded
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will fix graph items that will cause your graphs not to render, but as
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always, please remember to backup before you proceed to upgrade.
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ABOUT CACTI:
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Cacti is a complete frontend to RRDTool, it stores all of the necessary
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information to create graphs and populate them with data in a MySQL database.
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The frontend is completely PHP driven. Along with being able to maintain
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Graphs, Data Sources, and Round Robin Archives in a database, cacti handles
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the data gathering. There is also SNMP support for those used to creating
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traffic graphs with MRTG.
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Data Sources
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To handle data gathering, you can feed cacti the paths to any external
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script/command along with any data that the user will need to "fill in",
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cacti will then gather this data in a cron-job and populate a MySQL
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database/the round robin archives.
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Data Sources can also be created, which correspond to actual data on the
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graph. For instance, if a user would want to graph the ping times to a host,
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you could create a data source utilizing a script that pings a host and returns
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it's value in milliseconds. After defining options for RRDTool such as how to
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store the data you will be able to define any additional information that the
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data input source requires, such as a host to ping in this case. Once a data
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source is created, it is automatically maintained at 5 minute intervals.
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Graphs
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Once one or more data sources are defined, an RRDTool graph can be created
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using the data. Cacti allows you to create almost any imaginable RRDTool graph
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using all of the standard RRDTool graph types and consolidation functions.
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A color selection area and automatic text padding function also aid in the
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creation of graphs to make the process easier.
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Not only can you create RRDTool based graphs in cacti, but there are many
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ways to display them. Along with a standard "list view" and a "preview mode",
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which resembles the RRDTool frontend 14all, there is a "tree view", which
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allows you to put graphs onto a hierarchical tree for organizational purposes.
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User Management
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Due to the many functions of cacti, a user based management tool is built in
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so you can add users and give them rights to certain areas of cacti. This would
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allow someone to create some users that can change graph parameters, while
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others can only view graphs. Each user also maintains their own settings when
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it comes to viewing graphs.
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Templating
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Lastly, cacti is able to scale to a large number of data sources and graphs
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through the use of templates. This allows the creation of a single graph or
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data source template which defines any graph or data source associated with it.
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Host templates enable you to define the capabilities of a host so cacti can
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poll it for information upon the addition of a new host.
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