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--- howtoconfigurecricket [2007/09/27 19:24] – faltin
+++ howtoconfigurecricket [2015/10/14 13:42] (current) – remove obsolete page morten
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-====== How to configure local Cricket-additions in NAV-v3 ======
-===== Introduction =====
-The information assume that you have installed nav in /usr/local/nav.
-The information here is under construction. It is possibly erroneous
-and for a fact incomplete.
-The default installation of Cricket in NAV-v3 gives you statistics for
-your routers and switches and their interfaces. However, it may be
-desirable to add local statistics to the installation of Cricket. This
-document will lead you through a detailed way to do this without
-installing a new instance of Cricket. This document will **not** help
-you if you do not know anything about Cricket. For information about
-how to configure Cricket, see the documentation at [[http://cricket.sourceforge.net/support/doc/|SourceForge]]
-===== The three steps =====
-Adding your local statistics to Cricket may be done in three (or four)
-steps:
-  * Create a directory to store the configuration.
-  * Create the configuration you wish in the newly created directory.
-  * Edit the subtree-sets so that Cricket knows that this directory is active.
-  * Alternatively: Add a new cron-job to collect data in another interval than 5 minutes.
-===== Creating a directory =====
-The Cricket config-tree is located at
-/usr/local/nav/cricket/cricket-config.
-The basic structure of a NAV-v3 install is the following directories:
-  * giga-router-interfaces
-  * giga-switch-ports
-  * router-interfaces
-  * routers
-  * servers
-  * switch-ports
-  * switches
-These directories are configured automatically, and the files here
-should not be altered.
-However, any other directories you create will not be affected by the
-automatic processes in NAV-v3. This is thus where you start when
-making your local additions.
-Create the directory you want to store your configuration in here.
-<code>
-	> cd /usr/local/nav/cricket/cricket-config
-	> mkdir localadditions
-</code>
-Make sure that directory has correct permissions. At least it should
-be a member of the nav-group and that group should have read and
-execute-permissions.
-===== Creating the configuration =====
-This document does not cover how to configure Cricket. The
-Cricket-documentation is located at
-[[http://cricket.sourceforge.net/support/doc/|SourceForge]]
-and should give you
-all the information you need. Remember to compile the new config-tree
-when you are done making the configuration.
-<code>
-	> /usr/local/nav/cricket/cricket/compile
-</code>
-===== Edit subtree-sets =====
-Cricket gathers data using cron. The cron-daemon executes the
-collector-script located in /usr/local/nav/cricket/cricket. To ease
-the configuration of the cron-daemon, the file "subtree-sets" is used
-to group directories into specific "sets". To collect data from a
-"set" the collect-subtree script is called with the name of the set as
-argument.
-NAV-v3 uses two different sets when gathering data - "normal" and
-"giga". The "normal" set runs every five minute (which is default in
-Cricket) and the "giga" set runs every minute (see also "Coming
-updates in NAV" below). The reason giga runs every minute is to reduce the
-chance that the 32-bits counters wrap on giga-interfaces. This method
-is not perfect, but mitigates the threat of a wrap.
-To collect data from your local configuration you only need to edit
-the subtree-sets file and add your directory in the "normal" set. This
-will ensure that data is gathered every five minute.
-<code>
-	set normal:
-            /routers
-            /switches
-            /switch-ports
-            /router-interfaces
-            /servers
-            /localadditions
-</code>
-If you want to collect data in another interval you will have to make
-another set. In addition you will need to make a new cron-job so that
-Cricket gathers data (covered in the next section).
-===== Adding a new cron-job to collect data =====
-Adding a new cron-job may be done in several ways:
-. Adding a cron-job to an existing user. If the user is a member of the nav-group, this user can run the collect-subtrees script with the intended interval. Remember to use the set you made as argument to collect-subtrees. The cron-job should look something like this (assuming 10 minute intervals):
-<code>
-	CRICKETDIR=/usr/local/nav/cricket
-	*/10 * * * * $CRICKETDIR/cricket/collect-subtrees local
-</code>
-. Adding a new cron-job in /usr/local/nav/etc/cron.d/cricket and restart cricket using /usr/local/nav/bin/nav. **This is not recommended** because this file may be either overwritten or not changed when upgrading to a new version of NAV.
-. Make a new cron-fragment in /usr/local/nav/etc/cron.d. This will ensure that you can start/stop collecting using the nav-script. Make sure that you create a fragment that is not likely to be overwritten, i.e. the name should reflect that this is a local addition. This because if a future release of NAV has a fragment with the same name, complications may occur.
-===== Coming updates in NAV =====
-The current directory-structure with giga-switch-ports and
-giga-router-interfaces in addition to the other directories is not an
-optimal structure. When you search for a graph you do not want to have
-to search in multiple places to find what you are looking for.
-A coming update in NAV plans to solve this problem. It will get rid of
-the giga-directories and put all information in one directory for
-switch-ports and one for router-interfaces.
-The reason this has not been done before is that you need to use
-SNMP-v2 to fulfill this, and the current set of network-equipment does
-not always update the SNMP-v2 counters according to the standard. We
-plan to develop a test for this and put the ones that follow the
-standard in the "normal" directories, and the others in another
-directory.  Hopefully the number of ports/interfaces that go in the
-other directory will decrease as time goes by and they start to update
-the counters correctly.