{"id":480,"date":"2013-06-04T15:49:45","date_gmt":"2013-06-04T18:49:45","guid":{"rendered":"http:\/\/blog.abratel.com.br\/?p=480"},"modified":"2013-06-04T15:57:50","modified_gmt":"2013-06-04T18:57:50","slug":"instalacao-nagisk-nagios","status":"publish","type":"post","link":"https:\/\/blog.abratel.com.br\/?p=480","title":{"rendered":"Instala\u00e7\u00e3o Nagisk Nagios NRPE"},"content":{"rendered":"

Sistema operacional CentOS 6.3<\/strong><\/p>\n

\"Imagem<\/a><\/p>\n

No servidor cliente, que contem o asterisk e ser\u00e1 monitorado:<\/strong><\/p>\n

1 – Criar um usu\u00e1rio com nome nagios juntamente com uma senha.<\/p>\n

2 – Instalar a \u00faltima vers\u00e3o do nagios plugins:
\nmkdir ~\/downloads
\ncd ~\/downloads<\/p>\n

(verificar o download mais recente http:\/\/sourceforge.net\/projects\/nagiosplug\/files\/nagiosplug\/)
\nwget http:\/\/downloads.sourceforge.net\/project\/nagiosplug\/nagiosplug\/1.4.16\/nagios-plugins-1.4.16.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fnagiosplug%2Ffiles%2Fnagiosplug%2F1.4.16%2F&ts=1370370296&use_mirror=freefr <\/p>\n

tar xzf nagios-plugins-*
\ncd nagios-plugins-1.4.6
\nCompile and install the plugins.
\n.\/configure
\nmake
\nmake install<\/p>\n

chown nagios.nagios \/usr\/local\/nagios
\nchown -R nagios.nagios \/usr\/local\/nagios\/libexec<\/p>\n

3 – Foi necess\u00e1ria instala\u00e7\u00e3o:
\nyum install sudo.i686
\nyum install perl
\nyum install mod_ssl
\nyum install openssl
\nyum install xinetd<\/p>\n

4 – Instalar NRPE:
\ncd ~\/downloads<\/p>\n

Verificar a ultima vers\u00e3o, abaixo irei baixar a vers\u00e3o 2.14:
\nwget http:\/\/downloads.sourceforge.net\/project\/nagios\/nrpe-2.x\/nrpe-2.14\/nrpe-2.14.tar.gz?r=http%3A%2F%2Fexchange.nagios.org%2Fdirectory%2FAddons%2FMonitoring-Agents%2FNRPE–2D-Nagios-Remote-Plugin-Executor%2Fdetails&ts=1370370488&use_mirror=ufpr<\/p>\n

tar xzf nrpe-*
\ncd nrpe-2.8<\/p>\n

Compile the NRPE addon.
\n.\/configure
\nmake all<\/p>\n

Instalar NRPE plugin (for testing), daemon, e sample daemon config file.<\/p>\n

make install-plugin
\nmake install-daemon
\nmake install-daemon-config<\/p>\n

Instalar NRPE daemon como um servi\u00e7o sobre o xinetd.<\/p>\n

make install-xinetd<\/p>\n

Editar o \/etc\/xinetd.d\/nrpe file e adicionar o ip do servidor nagios:<\/p>\n

only_from = 127.0.0.1 200.21.21.24 192.168.218.22<\/p>\n

Adicionar a porta ao servi\u00e7o em \/etc\/services
\nnrpe 5666\/tcp # NRPE<\/p>\n

Restartar o servi\u00e7o xinetd
\nservice xinetd restart
\nou \/etc\/init.d\/xinetd restart<\/p>\n

Verificar se o servi\u00e7o esta rodando:
\nnetstat -at | grep nrpe
\nTer\u00e1 que ter uma sa\u00edda como essa:
\ntcp 0 0 *:nrpe *:* LISTEN<\/p>\n

Se tudo ocorreu certo teremos ent\u00e3o ap\u00f3s o comando:
\n\/usr\/local\/nagios\/libexec\/check_nrpe -H localhost
\nUma sa\u00edda como esta:
\nNRPE v2.14<\/p>\n

6 – Se utilizar firewall na rede liberar a porta 5666 para o iptables podemos ter uma regra como essa:
\niptables -I RH-Firewall-1-INPUT -p tcp -m tcp \u2013dport 5666 -j ACCEPT
\nservice iptables save<\/p>\n

7 – Instala\u00e7\u00e3o Nagisk
\nwget http:\/\/sourceforge.net\/projects\/nagisk\/files\/nagisk\/nagisk-1.2\/nagisk-1.2.2.tgz\/download
\ntar -xvf nagisk-1.2.2.tgz
\ncd nagisk-1.2.2
\ncp nagisk.pl \/usr\/local\/nagios\/libexec<\/p>\n

chown nagios:nagios \/usr\/local\/nagios\/libexec\/nagisk.pl
\nchmod 750 \/usr\/local\/nagios\/libexec\/nagisk.pl<\/p>\n

Em \/etc\/sudoers edite o arquivo adicionando (edite com o comando visudo):
\nnagios ALL= NOPASSWD: \/usr\/sbin\/asterisk<\/p>\n

E comentando o arquivo:
\n#Defaults requiretty<\/p>\n

Adicione os comandos em \/usr\/local\/nagios\/etc\/nrpe.cfg:
\ncommand[check_asterisk_version]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c version
\ncommand[check_asterisk_peers]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c peers
\ncommand[check_asterisk_channels]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c channels
\ncommand[check_asterisk_zaptel]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c zaptel
\ncommand[check_asterisk_span]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c span -s 1<\/p>\n

Sendo que os comandos que cadastrar\u00e1 no servidor nagios ser\u00e1 sempre os iniciais disponibilizados no inicio das linhas acima (check_asterisk_version, etc).<\/p>\n

Trocar essa linha do arquivo \/usr\/local\/nagios\/etc\/nrpe.cfg:
\ndont_blame_nrpe=0 para dont_blame_nrpe=1
\ne verificar se consta em outra linha a permiss\u00e3o:
\nallowed_hosts=127.0.0.1<\/p>\n

A minha linha ficou assim pois adicionei mais monitoramentos e transformei o nagisk para funcionar com o dahdi ao inv\u00e9s de zaptel:
\n# The following examples use hardcoded command arguments…
\ncommand[check_ntp_time]=\/usr\/local\/nagios\/libexec\/check_ntp_time -H localhost
\ncommand[check_users]=\/usr\/local\/nagios\/libexec\/check_users -w 5 -c 10
\ncommand[check_load]=\/usr\/local\/nagios\/libexec\/check_load -w 15,10,5 -c 30,25,20
\ncommand[check_sda]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/sda
\ncommand[check_zombie_procs]=\/usr\/local\/nagios\/libexec\/check_procs -w 5 -c 10 -s Z
\ncommand[check_total_procs]=\/usr\/local\/nagios\/libexec\/check_procs -w 150 -c 200
\ncommand[check_mysql]=\/usr\/local\/nagios\/libexec\/check_mysql -d asterisk -H localhost -P 3306 -u root -p zoltrix90
\ncommand[check_dig]=\/usr\/local\/nagios\/libexec\/check_dig -l www.google.com.br -H localhost -c 3 -w 1
\n#MEMORY Check
\n# check_mem = MEMORY at defined warning and critical use %.
\ncommand[check_mem]=\/usr\/local\/nagios\/libexec\/check_mem.sh 75 85
\n#command[check_mysql_query]=\/usr\/local\/nagios\/libexec\/check_mysql_query -q “SELECT round(SUM(duration)\/60) Minutos FROM cdr WHERE calldate > ( NOW( ) – INTERVAL 30 DAY ) AND dst = ‘s’ AND dcontext = ‘recebesp2300′” -d asterisk -H localhost -P 3306 -u root -p senha
\ncommand[check_asterisk_peer]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c peer
\ncommand[check_asterisk_peer2]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c peer2
\ncommand[check_asterisk_version]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c version
\ncommand[check_asterisk_peers]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c peers
\ncommand[check_asterisk_channels]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c channels
\ncommand[check_asterisk_dahdi]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c dahdi
\ncommand[check_asterisk_span]=\/usr\/local\/nagios\/libexec\/nagisk.pl -c span -s 1
\ncommand[check_asterisk_teste]=\/usr\/sbin\/asterisk -rx “core show channels”<\/p>\n

Restartar o servi\u00e7o nrpe
\n\/etc\/init.d\/nrpe restart
\nou
\n\/etc\/init.d\/xinetd restart<\/p>\n

Teste para verificar se o retorno deu certo:
\ncd \/usr\/local\/nagios\/libexec
\n.\/check_nrpe -H localhost -c check_asterisk_version
\nAsterisk 11.2.1<\/p>\n

NO SERVIDOR NAGIOS:<\/p>\n

\/etc\/nagios\/config\/hosts.cfg<\/strong><\/p>\n

define host{
\n use generic-box
\n host_name ipbx
\n alias Asterisk Escritorio
\n address 201.20.20.238
\n }<\/p>\n

\/etc\/nagios\/config\/commands.cfg<\/strong>
\ndefine command{
\n command_name check_nrpe2
\n command_line $USER1$\/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
\n}<\/p>\n

\/etc\/nagios\/config\/services.cfg<\/strong><\/p>\n

define service{
\n use local-service ; Name of service template to use
\n host_name ipbx
\n service_description Uso da CPU
\n check_command check_nrpe2!check_load
\n}<\/p>\n

define service{
\n use local-service
\n host_name ipbx
\n service_description Versao do asterisk
\n check_command check_nrpe2!check_asterisk_version
\n}<\/p>\n

define service{
\n use local-service
\n host_name ipbx
\n service_description Checagem dos ramais conectados
\n check_command check_nrpe2!check_asterisk_peers
\n}
\ndefine service{
\n use local-service
\n host_name ipbx
\n service_description Placa Digium e Aligera
\n check_command check_nrpe2!check_asterisk_dahdi
\n}<\/p>\n

define service{
\n use local-service
\n host_name ipbx
\n service_description Tronco Digital E1 Embratel
\n check_command check_nrpe2!check_asterisk_span
\n}<\/p>\n

define service{
\n use local-service
\n host_name ipbx
\n service_description Numero virtual Vono
\n check_command check_nrpe2!check_asterisk_peer
\n}<\/p>\n

define service{
\n use local-service
\n host_name ipbx
\n service_description Checagem de ligacoes ativas
\n check_command check_nrpe2!check_asterisk_channels
\n}
\ndefine service{
\n use local-service
\n host_name ipbx
\n service_description Integridade Mysql database Asterisk
\n check_command check_nrpe2!check_mysql
\n}
\ndefine service{
\n use local-service
\n host_name ipbx
\n service_description Checagem do funcionamento DNS
\n check_command check_nrpe2!check_dig
\n}
\ndefine service{
\n use local-service
\n host_name ipbx
\n service_description Memoria usada
\n check_command check_nrpe2!check_mem
\n }<\/p>\n

define service{
\n use local-service
\n host_name ipbx
\n service_description Tamanho Sda
\n check_command check_nrpe2!check_sda
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"

Sistema operacional CentOS 6.3 No servidor cliente, que contem o asterisk e ser\u00e1 monitorado: 1 – Criar um usu\u00e1rio com nome nagios juntamente com uma senha. 2 – Instalar a \u00faltima vers\u00e3o do nagios plugins: mkdir ~\/downloads cd ~\/downloads (verificar o download mais recente http:\/\/sourceforge.net\/projects\/nagiosplug\/files\/nagiosplug\/)…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1,2],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts\/480"}],"collection":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=480"}],"version-history":[{"count":0,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts\/480\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}