Installazione stand alone

Installazione pacchetti

sudo apt-get install collectd

Abilitazione plugin necessari:

sudoedit /etc/collectd/collectd.conf

Syslog è necessario per loggare:

LoadPlugin syslog
<Plugin syslog>
        LogLevel info
</Plugin>

Rrdtool è necessario per scrivere le statistiche su disco in /var/lib/collectd/rrd/nomemacchina.example.com. Se la macchina che si sta configurando è solo client, non è necessario salvare le statistiche in locale:

LoadPlugin rrdtool
<Plugin rrdtool>
        DataDir "/var/lib/collectd/rrd"
</Plugin>

Questo è un plugin base per le statistiche CPU, non necessita di configurazione:

LoadPlugin cpu

Vedi sezione finale per quelli che necessitano di configurazione

Riavvio

sudo invoke-rc.d collectd restart

Installazione frontend web

PhpCollection

cd /var/www/
sudo mkdir php-collection
cd php-collection/
sudo cp /usr/share/doc/collectd/examples/php-collection/* .

Installare apache2 e php-5

Loggarsi su http://servername.example.com/php-collection/

CGP

cd /var/www
sudo mkdir -p collectd
cd collectd
sudo git clone https://github.com/pommi/CGP.git .

Loggarsi su http://servername.example.com/collectd/

Configurazione Client

Installare come standalone

Se non si intende consultare le statistiche in locale, è possibile NON abilitare il plugin rrdtool

LoadPlugin rrdtool

Abilitare il plugin network, che serve ad inviare le statistiche ad un server centrale:

sudoedit /etc/collectd/collectd.conf

LoadPlugin network

<Plugin network>
#   # client setup:
    Server "192.168.254.101"
</Plugin>

Riavviare

sudo invoke-rc.d collectd restart

Configurazione Server

Installare come standalone

Abilitare il plugin

sudoedit /etc/collectd/collectd.conf

LoadPlugin network

<Plugin network>
#   # server setup:
    Listen "192.168.254.101"
</Plugin>

Riavviare

sudo invoke-rc.d collectd restart

Gestione

Azzerare il database:

sudo invoke-rc.d collectd stop
sudo rm -rf /var/lib/collectd/rrd
sudo invoke-rc.d collectd start

Configurazione Plugins

Bind

Questo plugin mostra delel statistiche di bind.
Attivare l'accesso alle stats di bind:

sudoedit /etc/bind/named.conf.options

# ...
 statistics-channels {
  inet 127.0.0.1 port 8053;
};
# ...

sudo invoke-rc.d bind9 restart

Impostare le opzioni:

sudoedit /etc/collectd/collectd.conf

# ...
LoadPlugin bind
#...
<Plugin "bind">
    URL "http://localhost:8053/"

    OpCodes true
    QTypes true
    ServerStats true
    ZoneMaintStats true
    ResolverStats false
    MemoryStats true
#
#   <View "_default">
#       QTypes true
#       ResolverStats true
#       CacheRRSets true
#
#       Zone "127.in-addr.arpa/IN"
#   </View>
</Plugin>

sudo invoke-rc.d collectd restart

Df

Mostra spazio libero ed occupato. Di default mostra tutti i filesystem montati, compresi i temporanei. Per includere solo i filesystem ext4:

#...
LoadPlugin df
#...
<Plugin df>
    FSType ext4
    IgnoreSelected false
    ReportByDevice true
    ReportInodes true
</Plugin>
#...

Per un bug, se non si configura il plugin, i filesystem vengono conteggiati doppi (ad esempio rootfs o tmpfs), e il syslog viene floodato con messaggi del tipo

Aug 20 16:27:12 mythbox collectd[32167]: rrdtool plugin: rrd_update_r (/var/lib/collectd/rrd/mythbox/df-root/df_complex-free.rrd) failed: /var/lib/collectd/rrd/mythbox/df-root/df_complex-free.rrd: illegal attempt to update using time 1345444032 when last update time is 1345444032 (minimum one second step)

Attenzione che in questo modo, se vengono montati degli snapshot o filesystem, questi verranno inclusi nel conteggio. Eventualmente, usare la selezione per device, esempio:

Device "/dev/md0"

Vedi:

Collectd causing rrd illegal attempt to update using time errors

Filecount

Serve per mostrare la dimensione di una directory e il numero di files.

Funziona solo se configurato.

Esempio:

<Plugin filecount>
	<Directory "/var/www/example.com">
		Instance "WWW example.com"
		IncludeHidden true
	</Directory>
</Plugin>

HDDTemp

Installare hddtemp setuid root, senza logging delle temperature, in ascolto con i parametri standard

sudo apt-get install hddtemp

Configurare il plugin

sudoedit /etc/collectd/collectd.conf

#...
LoadPlugin hddtemp
#...
<Plugin hddtemp>
    Host "127.0.0.1"
    Port 7634
    TranslateDevicename true
</Plugin>
#...

Mysql

Configurare il plugin:

<Plugin mysql>
    <Database example_string>
        Host "localhost"
        Port 3306
        User "collectd"
        Password "secretPassword"
    </Database>

</Plugin>

Creare uno user con questi privilegi:

 CREATE USER 'collectd'@'localhost' IDENTIFIED BY 'secretPassword';
 -- Give appropriate permissions
 -- ("GRANT USAGE" is synonymous to "no privileges")
 GRANT USAGE ON *.* TO 'collectd'@'localhost';
 -- Permissions for the MasterStats and SlaveStats options
 GRANT REPLICATION CLIENT ON *.* TO 'collectd'@'localhost';

Nut

Questo plugin fornisce info sull'ups collegato:

LoadPlugin nut

Indicare il nome dell'ups come da comando:

upsc -l

<Plugin nut>
        UPS "apc_backups_cs_500"
</Plugin>

Tail

Questo plugin viene usato per leggere i log. Matchando delle occorrenze si possono estrarre delle info loggate dai vari daemon.

Postfix

Questa configurazione crea delle statistiche per Postfix.

Definire un tipo dati utilizzato nei contatori

sudoedit /etc/collectd/my_types.db

mail_counter value:COUNTER:0:65535

Abilitare i tipi dati custom:

sudoedit /etc/collectd/collectd.conf

TypesDB "/usr/share/collectd/types.db" "/etc/collectd/my_types.db"

Configurare il plugin:

sudoedit /etc/collectd/collectd.conf

#...
LoadPlugin tail
#...
<Plugin "tail">
#...
<File "/var/log/mail.log">
# or: <File "/srv/rsyslog/mail.log">
  Instance "postfix"

   # number of connections
   # (incoming)
   <Match>
     Regex "\\<postfix\\/smtpd\\[[0-9]+\\]: connect from\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-in-open"
   </Match>
   <Match>
     Regex "\\<postfix\\/smtpd\\[[0-9]+\\]: disconnect from\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-in-close"
   </Match>
   <Match>
     Regex "\\<postfix\\/smtpd\\[[0-9]+\\]: lost connection after .* from\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-in-lost"
   </Match>
   <Match>
     Regex "\\<postfix\\/smtpd\\[[0-9]+\\]: timeout after .* from\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-in-timeout"
   </Match>
   <Match>
     Regex "\\<postfix\\/smtpd\\[[0-9]+\\]: setting up TLS connection from\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-in-TLS-setup"
   </Match>
   <Match>
     Regex "\\<postfix\\/smtpd\\[[0-9]+\\]: [A-Za-z]+ TLS connection established from\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-in-TLS-established"
   </Match>
   # (outgoing)
   <Match>
     Regex "\\<postfix\\/smtp\\[[0-9]+\\]: setting up TLS connection to\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-out-TLS-setup"
   </Match>
   <Match>
     Regex "\\<postfix\\/smtp\\[[0-9]+\\]: [A-Za-z]+ TLS connection established to\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "connection-out-TLS-established"
   </Match>

  # rejects for incoming E-mails
  <Match>
    Regex "\\<554 5\\.7\\.1\\>"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "rejected"
  </Match>
  <Match>
    Regex "\\<450 4\\.7\\.1\\>.*Helo command rejected: Host not found\\>"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "rejected-host_not_found"
  </Match>
  <Match>
    Regex "\\<450 4\\.7\\.1\\>.*Client host rejected: No DNS entries for your MTA, HELO and Domain\\>"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "rejected-no_dns_entry"
  </Match>
   <Match>
     Regex "\\<450 4\\.7\\.1\\>.*Client host rejected: Mail appeared to be SPAM or forged\\>"
     DSType "CounterInc"
     Type "mail_counter"
     Instance "rejected-spam_or_forged"
   </Match>

  # status codes
  <Match>
    Regex "status=deferred"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "status-deferred"
  </Match>
  <Match>
    Regex "status=forwarded"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "status-forwarded"
  </Match>
  <Match>
    Regex "status=reject"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "status-reject"
  </Match>
  <Match>
    Regex "status=sent"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "status-sent"
  </Match>
  <Match>
    Regex "status=bounced"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "status-bounced"
  </Match>
  <Match>
    Regex "status=SOFTBOUNCE"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "status-softbounce"
  </Match>

  # message size
  <Match>
    Regex "size=([0-9]*)"
    DSType "CounterAdd"
    Type "ipt_bytes"
    Instance "size"
  </Match>

  # delays (see [1] for details)
  # total time spent in the Postfix queue
  <Match>
    Regex "delay=([\.0-9]*)"
    DSType "GaugeAverage"
    Type "gauge"
    Instance "delay"
  </Match>
  # time spent before the queue manager, including message transmission
  <Match>
    Regex "delays=([\.0-9]*)/[\.0-9]*/[\.0-9]*/[\.0-9]*"
    DSType "GaugeAverage"
    Type "gauge"
    Instance "delay-before_queue_mgr"
  </Match>
  # time spent in the queue manager
  <Match>
    Regex "delays=[\.0-9]*/([\.0-9]*)/[\.0-9]*/[\.0-9]*"
    DSType "GaugeAverage"
    Type "gauge"
    Instance "delay-in_queue_mgr"
  </Match>
  # connection setup time including DNS, HELO and TLS
  <Match>
    Regex "delays=[\.0-9]*/[\.0-9]*/([\.0-9]*)/[\.0-9]*"
    DSType "GaugeAverage"
    Type "gauge"
    Instance "delay-setup_time"
  </Match>
  # message transmission time
  <Match>
    Regex "delays=[\.0-9]*/[\.0-9]*/[\.0-9]*/([\.0-9]*)"
    DSType "GaugeAverage"
    Type "gauge"
    Instance "delay-trans_time"
  </Match>
</File>
</Plugin>

Postgrey

<File "/var/log/mail.log">
  Instance "postgrey"
  <Match>
    Regex "\\<action=greylist, reason=new\\>"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "greylisted"
  </Match>
 
  <Match>
    Regex "\\<action=pass, reason=triplet found\\>"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "accepted"
  </Match>
 
  <Match>
    Regex "\\<action=pass, reason=client whitelist\\>"
    DSType "CounterInc"
    Type "mail_counter"
    Instance "client_whitelist"
  </Match>
</File>

Vedi:

*Plugin:Tail/Config - collectd Wiki

Monitoraggio di sistemi con collectd

Contents

Installazione stand alone

Installazione frontend web

PhpCollection

CGP

Configurazione Client

Configurazione Server

Gestione

Configurazione Plugins

Bind

Df

Filecount

HDDTemp

Mysql

Nut

Tail

Postfix

Postgrey

Navigation menu

Monitoraggio di sistemi con collectd

Installazione stand alone

Installazione frontend web

PhpCollection

CGP

Configurazione Client

Configurazione Server

Gestione

Configurazione Plugins

Bind

Df

Filecount

HDDTemp

Mysql

Nut

Tail

Postfix

Postgrey

Navigation menu

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