Cacti+nagios Monitoring System (IV): CACTI integrated Nagios

First, the principle

integrating cacti and Nagios is a plugin of cacti, nagios for cacti, which works by importing Nagios data through ndo2db into the MySQL database (the cacti library). Then cacti reads the database information and displays the results of Nagios.

Second, cacti expansion module

Cacti extension modules need to download installation Cacti-plugin,cacti-0.8.8a and later versions are integrated this extension does not need to be installed separately, if you are using an older version of cacti, the expansion module is installed as follows:

Cd/root/download

wget http://www.cacti.net/downloads/pia/cacti-plugin-0.8.7h-PA-v3.0.tar.gz

Tar xvf cacti-plugin-0.8.7h-pa-v3.0.tar.gz

Cp-r cacti-plugin-arch/*/var/www/html/cacti/

cd/var/www/html/cacti/

Mysql-u cactier-p 123456 Cactidb < Pa.sql

Patch-p1-n < Cacti-plugin-0.8.7h-pa-v3.0.diff

Vim include/config.php

$url _path = "/cacti/";

Enter cacti from the web, enable cacti plugin extension

Third, install Ndoutils plug-in

1, installation ndoutils

Cd/root/download

wget http://jaist.dl.sourceforge.net/project/nagios/ndoutils-2.x/ndoutils-2.0.0/ndoutils-2.0.0.tar.gz

Tar zxvf ndoutils-2.0.0.tar.gz

CD ndoutils-2.0.0

./configure--prefix=/usr/local/nagios/--with-mysql-inc=/usr/include/mysql--with-mysql-lib=/usr/lib64/mysql-- Enable-mysql--disable-pgsql--with-ndo2db-user=nagios--with-ndo2db-group=nagios

Make

2. Prepare the configuration file

CD DB

./installdb-u cactier-p 123456-h localhost-d cactidb

Cd..

CP Src/{ndomod-4x.o,ndo2db-4x,log2ndo,file2sock}/usr/local/nagios/bin

Nagios is a 4.x version of the NDOMOD-4X.O and ndo2db-4x, if the 3.x version copies the corresponding 3x file

CP Config/ndomod.cfg-sample/usr/local/nagios/etc/ndomod.cfg

CP Config/ndo2db.cfg-sample/usr/local/nagios/etc/ndo2db.cfg

cd/usr/local/nagios/etc/

Chown Nagios:nagios ndo2db.cfg ndomod.cfg

chmod 664 Ndo2db.cfg ndomod.cfg

Cd/usr/local/nagios/bin

MV Ndo2db-4x ndo2db

MV NDOMOD-4X.O NDOMOD.O

Chown Nagios:nagios *

3. Modify the configuration file

vi/usr/local/nagios/etc/nagios.cfg

#注意, Broker_module and config_file on one line

BROKER_MODULE=/USR/LOCAL/NAGIOS/BIN/NDOMOD.O config_file=/usr/local/nagios/etc/ndomod.cfg event_broker_options=- 1

Process_performance_data=1

vi/usr/local/nagios/etc/ndo2db.cfg

Socket_type=tcp
Db_servertype=mysql
Db_host=localhost
db_port=3306
Db_name=cactidb
Db_prefix=npc_
Db_user=cactier
db_pass=123456

vi/usr/local/nagios/etc/ndomod.cfg

Output_type=tcpsocket

output=127.0.0.1

4. Start the daemon process

/usr/local/nagios/bin/ndo2db-c/usr/local/nagios/etc/ndo2db.cfg

cd/root/download/ndoutils-2.0.0

CP./daemon-init/etc/init.d/ndo2db

chmod +x/etc/init.d/ndo2db

Service NDO2DB Status

Chkconfig--add ndo2db

Chkconfig ndo2db on

Iv. Installation of NPC Plugin

Description: The full name Nagios Plugin for Cacti, which imports Nagios data through ndo2db to the MySQL database (the table at the beginning of the previous set of Npc_), and then Cacti reads the database information to show the results of Nagios through NPCs.

1. Install NPC

Cd/root/download

wget http://down.drv5.cn/www.drv5.cn/npc-2.0.4.tar.gz

Tar zxvf npc-2.0.4.tar.gz

MV npc/var/www/html/cacti/plugins/

vi/var/www/html/cacti/include/config.php

$plugins [] = ' NPC ';

2. Page Setup NPC

User management-->admin--> hook up plugin Management

Plugin management--> Click the Install icon, click the Enable icon

Settings-->npc--> settings are as follows

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3. Install JSON: Support NPC

JSON (JavaScript Object Notation) is a lightweight data interchange format. Easy for people to read and write. It is also easy for machine parsing and generation.

Note: Perform the 4th step of Php-m to see if the JSON is loaded, or skip 3 or 4 steps,

Cd/root/download

wget http://pkgs.fedoraproject.org/repo/pkgs/php-pecl-json/json-1.2.1.tgz/d8904d2f004ceec85eeacf524cd25539/ Json-1.2.1.tgz

Tar zxvf json-1.2.1.tgz

CD json-1.2.1

VI json_parser.c

#define ZVAL_DELREF z_delref_p

phpize

./configure

Make && make install

4. Configure PHP to support JSON

Vi/etc/php.d/json.ini

extension=json.so

Service httpd Restart

See if any JSON is loaded

php-m

See if you have import information

php-i | grep php.ini

5. Modify the database (missing individual fields)     

tail/var/log/messages

ndo2db:mysql_error: ' Unknown column ' long_output ' in ' Field List '

mysql-ucactier-p123456

Use CACTIDB;

ALTER TABLE npc_eventhandlers ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_hostchecks ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_hoststatus ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_notifications ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_servicechecks ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_servicestatus ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_statehistory ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_systemcommands ADD long_output TEXT not NULL DEFAULT "after output;

ALTER TABLE npc_services ADD importance smallint (6) Not NULL DEFAULT ' 0 ';

ALTER TABLE npc_hosts ADD importance smallint (6) Not NULL DEFAULT ' 0 ';

ALTER TABLE npc_contacts ADD minimum_importance smallint (6) Not NULL DEFAULT ' 0 ';

quit

6. Restart Service

Service mysqld Restart

Service httpd Restart

Service ndo2db Restart

Service Nagios Restart

7. Observation Log

Tail/usr/local/nagios/var/nagios.log

Tail/var/www/html/cacti/log/cacti.log

Tail/var/log/mysqld.log

Tail/var/log/messages

V. Problems encountered

1,the NPC page shows that Nagios is off

Error:

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Tail/usr/local/nagios/var/nagios.log

ndomod:could not Open Data sink! I ' ll keep trying, but the some output may get lost ...

Solve:

cd/usr/local/nagios/etc/

Chown Nagios:nagios ndo2db.cfg ndomod.cfg

chmod 664 Ndo2db.cfg ndomod.cfg

Service ndo2db Restart

Service Nagios Restart

2. NDO2DB Service failed to start

Error:

Could not bind socket:address already on use

Solve:

PS aux|grep ndo2db See multiple ndo2db processes

kill-9 Process ID kill process and run again

sudo/usr/local/nagios/bin/ndo2db-c/usr/local/nagios/etc/ndo2db.cfg

3. message failed to send

Error:

Tail/var/log/message

ndo2db:Warning:queue send error, retrying ... ndo2db:message sent to queue.

Solve:

Vi/etc/sysctl.conf

Kernel.msgmax = 131072000

kernel.msgmnb = 131072000

Kernel.msgmni = 65536000

This article is from the "Moon Ching Xing Fei" blog, please be sure to keep this source http://ywzhou.blog.51cto.com/2785388/1532061