install

snmp的源代码,已经在我的ubuntu下编译通过

REQUIREMENTS

  A knowledgeable user.  This system is *not* entirely user friendly
  yet.   You have been warned.  Use at your own risk.  yada yada yada.

  Get and install:
  
    the mysql (http://www.mysql.com) database
      it may work with other databases, but I haven't tried.

    Apache (http://www.apache.org)

    The following perl modules (http://www.cpan.org):
      mod_perl
      SNMP (from the net-snmp source tree: SRCTREE/perl/SNMP)
      CGI
      DBI
      DBD::mSQL
      GD::Graph

    You may need more modules depending on your perl version, so sorry
    in advance if I missed some.

  Building and setting up mysql (a summary of what is needed.  See the
  mysql documentation for further details):
     ./configure
     make
     make install
     scripts/mysql_install_db
  
     start it by running 'safe_mysqld'.
     To run the sql commands listed in the following text, run
     'mysql'.

SQL REQUIREMENTS

  The scripts used by this project automatically create, edit, delete, 
  insert, update, etc everything necessary.  Because of this, you'll
  need to set up a SQL user with the ability to modify the heck out of 
  a database called "snmp" on your mysql server.  We'll call this user 
  SQLUSER below, and its password SQLPASSWORD.  Replace these with
  your appropriate information anytime you see them listed below.

INSTALLING THE PERL MODULES

  perl Makefile.PL
  make
  make install

  Copy the red.gif, and green.gif graphics files to your apache
  HTML-ROOT/graphics/.

SETTING UP APACHE

  (assumes you have mod_perl installed properly from above)

  Idealy, it should be put behind a user/password database in your web
  server (something that sets the REMOTE_USER environmental for CGI
  scripts).  This will greatly enhance its operation so that different
  users can be users of different groups of hosts, etc...  If this is
  not done, everyone will use the user name "guest".

  At the bottom of your httpd.conf file or in an apporpriate
  VirtualHost directive put the following lines, appropriately
  configuring the sql username, etc.  I strongly recommend turning on
  SSL support for this as well.:

    PerlModule netsnmp::manager
    <Location /manage>
         # put apache protection stuff here, like a password database etc!!!
         SetHandler perl-script
         PerlHandler ucdsnmp::manager
         PerlSetVar hostname SQLHOST
         PerlSetVar dbname snmp
         PerlSetVar user SQLUSER
         PerlSetVar pass SQLPASSWORD

	 # turn on password protection.  see apache htpasswd documentation.
	 # comment these out for unauthenticated access (generally a bad idea)
	 AuthType Basic
         AuthName "SNMP manager access"
         AuthUserFile /etc/httpd/conf/manager-passwd
         require valid-user

    </Location>

   Restart apache after you've done the above.

SETTING UP THE MYSQL UCD-SNMP DATABASES

  Use the following perl script to set up the mysql database tables
  required:

    ./setupdb -u SQLUSER -p SQLPASSWORD -h SQLHOST

  To display what this will do before you run it:

    ./setupdb -v -n

SETTING UP USERS OF THE SYSTEM

  Now you need to add yourself as a user.  You'll want to use a
  username that you configured for your apache password file (or
  whatever), or the user "guest" if you didn't configure apache for
  authenticated access.  The -a in this case grants "administrative"
  rights to the group of hosts, and thus allows the user to add new
  hosts to the group, delete hosts, etc.  Non-administrative users are 
  mostly "read-only" type users.

  The interface groups hosts together in "groups", and you put users
  in these groups to assign responsiblity for them.  Groups are
  created when a user gets assigned to one, so just pick a groupname
  for now and use it below.  Maybe later you can add yourself to a new 
  group using a similar command, and the web interface will change to
  reflect that you are now in more than one group.  Use the same group 
  name for multiple users that all belong to a single "group".

  If you add an email address to the argument list the system will
  mail that user every time it finds a problem or finds a problem that 
  has been fixed.

  *** DO NOT PICK A GROUP WITH THE NAME "default" ***

    ./setupuser -u SQLUSER -p SQLPASSWORD -h SQLHOST -a GROUPNAME USERNAME [EMAILADDRESS]

SETTING UP SNMP AUTHORIZATION INFORMATION

  Now, you need to add in your default authorization information for
  how to make SNMP requests to your host.  The parameter names you can 
  pick come straight from the SNMP perl module, so see "perldoc SNMP"
  for all the parameter names you can pick from.

  Examples:

    ./setupauth -u SQLUSER -p SQLPASSWORD -h SQLHOST Version 1 Community public
    ./setupauth -u SQLUSER -p SQLPASSWORD -h SQLHOST Version 3 SecName 'v3user' AuthPass 'myv3passphrase' SecLevel authNoPriv

  I also recommend adding a large default timeout (30 secs):

    ./setupauth -u SQLUSER -p SQLPASSWORD -h SQLHOST Timeout 30000000
  
  If you want different parameters for a group, it'll inherit
  everything from the default parameters specified above plus any more 
  that you set or override:

    ./setupauth -u SQLUSER -p SQLPASSWORD -h SQLHOST -g agroup Community private

  Further, hosts can be given specific parameters as well if they're
  really special:

    ./setupauth -u SQLUSER -p SQLPASSWORD -h SQLHOST -m host Timeout 60000000

COLLECTING THE DATA

  The command you need to run to collect data is snmptosql, which will 
  use the information defined above to fill your data base with all
  sorts of useful information that you've asked it to collect.
  Something like:

    snmptosql -H SQLHOST -u SQLUSER -p SQLPASSWORD

  should be put in cron to update a regular intervals.  I run mine
  every 10 minutes.  Note that it will *not* scale to a large number
  of hosts easily at the moment.  Start with no more than 20 or so to
  begin with.

USING THE SYSTEM

  Most of the things you'll need to do can be done from the web
  interface that you've just set up as /manager on some system in the 
  step above.  Go to this web page to see what you can do.

MONITORING HOSTS WITH IT (finally)

  It's *not* entirely intuitive yet.  So, lets give you an example.  In
  your snmpd.conf file, put a line that says "proc sendmail".  This will 
  check to see if sendmail is running on your system.  Also put "disk /
  10%" which will require the disk has at least 10% of free space.
  Restart the snmpd (or kill -HUP).  See the snmpd.conf manual page
  for some details.

  Then, go to the above URL and click on the group name you want to
  add a host to and enter the host name in the dialog box near the
  bottom of the page (assuming you're logged in as an administrator
  user setup using the -a flag to setupuser above).  Click on the
  "setup group XXX" link at the bottom of the group's page and click
  on all the check buttons (you can turn them all on even if you're
  not really using them all) and hit the submit button.

  Come back 10 minutes later, reload the group and click on the host
  name.  You should see pretty red/green lights if there is or isn't a
  problem.  It'll show you a few tables with the various bits of data
  it collected (including how many sendmail processes are running, an
  how much disk space is actually being used), etc.

GRAPHING

  To be written.