CentOS7.2部署Nagios4.4.3
系統(tǒng)運(yùn)維
Nagios是一款開源電腦系統(tǒng)和網(wǎng)絡(luò)監(jiān)視工具，能夠有效監(jiān)控windows,linux，Uninx的主機(jī)狀態(tài)，交換機(jī)路由器等網(wǎng)絡(luò)設(shè)置，打印機(jī)等.在系統(tǒng)或服務(wù)狀態(tài)異常時(shí)發(fā)出郵件或短信報(bào)警第一時(shí)間通知運(yùn)維人員，在狀態(tài)恢復(fù)后發(fā)出正常的郵件或短信報(bào)警通知。
Nagios Core 是一個(gè)開源的系統(tǒng)，Nagios XI是收費(fèi)的。我們這里安裝前者。
一、Nagios 結(jié)構(gòu)說明
Nagios 結(jié)構(gòu)上來說， 可分為核心和插件兩個(gè)部分。Nagios 的核心部分只提供了很少的監(jiān)控功能，因此要搭建一個(gè)完善的 IT 監(jiān)控管理系統(tǒng)，用戶還需要在 Nagios 服務(wù)器安裝相應(yīng)的插件，插件可以從 Nagios 官方網(wǎng)站下載 http://www.nagios.org/，也可以根據(jù)實(shí)際要求自己編寫所需的插件。
Nagios 可實(shí)現(xiàn)的功能特性：
監(jiān)控網(wǎng)絡(luò)服務(wù)（SMTP、POP3、HTTP、FTP、PING 等）；
監(jiān)控本機(jī)及遠(yuǎn)程主機(jī)資源（CPU 負(fù)荷、磁盤利用率、進(jìn)程 等）；
允許用戶編寫自己的插件來監(jiān)控特定的服務(wù)，方便地?cái)U(kuò)展自己服務(wù)的檢測方法，支持多種開發(fā)語言（Shell、Perl、Python、PHP 等）
具備定義網(wǎng)絡(luò)分層結(jié)構(gòu)的能力，用parent主機(jī)定義來表達(dá)網(wǎng)絡(luò)主機(jī)間的關(guān)系，這種關(guān)系可被用來發(fā)現(xiàn)和明晰主機(jī)宕機(jī)或不可達(dá)狀態(tài)；
當(dāng)服務(wù)或主機(jī)問題產(chǎn)生與解決時(shí)將告警發(fā)送給聯(lián)系人（通過 EMail、短信、用戶定義方式）；
可以支持并實(shí)現(xiàn)對主機(jī)的冗余監(jiān)控；
可用 WEB 界面用于查看當(dāng)前的網(wǎng)絡(luò)狀態(tài)、通知和故障歷史、日志文件等；
二．Nagios工作原理
Nagiosq的功能是監(jiān)控服務(wù)和主機(jī)，但也是 他 自身并不包括這部分功能，所有的監(jiān)控，檢測功能都是通過各種插件來完成的。
啟動(dòng)Nagios后他會(huì)周期性的自動(dòng)調(diào)用插件去檢查服務(wù)器狀態(tài) ，同時(shí)Nagios會(huì)維持一個(gè)列隊(duì)，所有插件返回來的狀態(tài)信息都進(jìn)入列隊(duì) ，Nagios每次都從隊(duì)首開始讀取信息，并進(jìn)行處理，把狀態(tài)結(jié)果通過web結(jié)果通過顯示出來
Nagios提供了許多插件，利用這些插件可以方便的監(jiān)控很多服務(wù)狀態(tài)，安裝完成 后，在Nagios主目錄下的/libexec里放有nagios自的可以使用的所有插件，如，check_disk是檢查磁盤空間的插件，check_load是檢查CPU負(fù)載的，等等。每一個(gè)插件可以通過運(yùn)行 ./check_xxx –h 來查看使用方法和功能；
Nagios可以識(shí)別4種狀態(tài)返回信息，即0（OK）表示狀態(tài)正常/綠色，1（WARNING）表示出現(xiàn)警告/X色，2（CRITTCAL）表示出現(xiàn) 非常嚴(yán)重 的錯(cuò)誤/紅色，3（UNKNOWN）表示未知錯(cuò)誤 、深X色。Nagios根據(jù)插件返回來的值，來判斷 監(jiān)控對象的狀態(tài)，并通過web顯示出來，以提供管理員及時(shí)發(fā)現(xiàn)故障
再說報(bào)警功能，如果 監(jiān)控系統(tǒng)發(fā)現(xiàn)問題不能報(bào)警那就沒有意義了，所以報(bào)警也是nagios很重要的功能之一，但是，同樣的，Nagios自身業(yè)沒有報(bào)警部分的代碼，甚至沒有插件，而是交給用戶或者其他 相關(guān)開源項(xiàng)目組去完成
Nagios安裝，是指基本平臺(tái)，也就是Nagios軟件包的安裝，它是監(jiān)控體系的框架，也是所有監(jiān)控基礎(chǔ)。
Nagios通過NRPE來遠(yuǎn)端管理服務(wù)
Nagios執(zhí)行安裝在它里面的check_nrpe插件，并告訴check_nrpe去檢測哪些服務(wù)。
通過SSL,check_nrpe連接遠(yuǎn)端 機(jī)子上的NRPE daemon
NRPE運(yùn)行本地的各種插件去檢測本地的服務(wù)和狀態(tài)
最后，NRPE把檢測的結(jié)果傳給主機(jī)端check_nrpe,check_nrpe在把結(jié)果 送到Nagios狀態(tài)隊(duì)列中，
Nagios依次讀取隊(duì)列中信息，再把結(jié)果顯示出來
二．Nagios部署
備注：默認(rèn)情況下Nagios沒有數(shù)據(jù)庫，可以安裝NDOUtils保存Nagios數(shù)據(jù)到mysql數(shù)據(jù)庫中。
1、環(huán)境準(zhǔn)備
設(shè)置或停止防火墻：
[root@localhost?~]#?systemctl?stop?firewalld.service [root@localhost?~]#?systemctl?disable?firewalld.service
關(guān)閉selinux：
臨時(shí)關(guān)閉： [root@localhost?~]#?setenforce?0 永久關(guān)閉（修改配置文件）： [root@localhost?~]#?vi?/etc/selinux/config 改成SELINUX=disabled
[root@localhost?~]#?rpm?-qa?httpd* [root@localhost?~]#?rpm?-e?--nodeps?包名 有多個(gè)httpd*，用腳本刪除for?name?in?`rpm?-qa?httpd*`;do?rpm?-e?--nodeps?$name;done
[root@localhost?~]#?rpm?-Uvh?https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm [root@localhost?~]#?yum?install?wget?lrzsz?vim?lynx?lsof?netstat-tools?unzip?-y
時(shí)區(qū)設(shè)置：
[root@localhost?~]timedatectl [root@localhost?~]timedatectl?list-timezones??#該命令列出了所有的時(shí)區(qū) [root@localhost?~]timedatectl?set-timezone?Asia/Shanghai?#該命令把時(shí)區(qū)設(shè)置為上海
時(shí)間同步：
[root@localhost?~]#?ntpdate?time.nist.gov?#如果沒有yum安裝此命令 [root@localhost?~]#?/usr/sbin/ntpdate?time.nist.gov [root@localhost?~]#?crontab?-e */10****?/usr/sbin/ntpdate?time.nist.gov?>/dev/null?2>&1
2、源碼安裝nagios core（主程序）
參考：https://support.nagios.com/kb/article/nagios-core-installing-nagios-core-from-source-96.html#_ga=2.130440076.2034626946.1559144380-1378811618.1556870555
[root@localhost?~]#?yum?install?-y?gcc?glibc?glibc-common?wget?unzip?httpd?php?gd?php-gd?gd-devel?perl?postfix [root@localhost?~]#?cd?/tmp [root@localhost?tmp]#?wget?-O?nagioscore.tar.gz?https://github.com/NagiosEnterprises/nagioscore/archive/nagios-4.4.3.tar.gz [root@localhost?tmp]#?tar?zxvf?nagioscore.tar.gz [root@localhost?tmp]#?cd?/tmp/nagioscore-nagios-4.4.3/ [root@localhost?nagioscore-nagios-4.4.3]#?./configure [root@localhost?nagioscore-nagios-4.4.3]#?make?all [root@localhost?nagioscore-nagios-4.4.3]#?make?install-groups-users [root@localhost?nagioscore-nagios-4.4.3]#?usermod?-a?-G?nagios?apache
#安裝主程序
[root@localhost?nagioscore-nagios-4.4.3]#?make?install [root@localhost?nagioscore-nagios-4.4.3]#?make?install-daemoninit [root@localhost?nagioscore-nagios-4.4.3]#?systemctl?enable?httpd.service
#配置目錄權(quán)限
[root@localhost?nagioscore-nagios-4.4.3]#?make?install-commandmode
#安裝示例配置文件
[root@localhost?nagioscore-nagios-4.4.3]#?make?install-config
#安裝nagios的web接口,會(huì)在/etc/httpd/conf.d目錄中創(chuàng)建nagios.conf文件
[root@localhost?nagioscore-nagios-4.4.3]#?make?install-webconf
執(zhí)行上述操作后，會(huì)在/usr/local/nagios目錄下產(chǎn)生如下目錄：
bin：nagios執(zhí)行程序所在的目錄，nagios文件即為主程序。
etc：nagios配置文件目錄，當(dāng)make install-config完以后etc下面就會(huì)出現(xiàn)默認(rèn)的配置文件。
sbin：nagios CGI文件所在目錄，這里存放的是一些外部命令執(zhí)行程序。
share：nagios網(wǎng)頁文件目錄，存放一些html文件。
var：nagios日志文件、pid等文件目錄。
Libexec：系統(tǒng)默認(rèn)插件的存儲(chǔ)位置
修改nagios警告信息的郵件地址
[root@localhost?~]#?vi?/usr/local/nagios/etc/objects/contacts.cfg ????email???????????????????442102293@qq.com?;?<<*****?CHANGE?THIS?TO?YOUR?EMAIL?ADDRESS?******
nagiosadmin設(shè)置密碼
root@localhost?~]#?htpasswd?-c?/usr/local/nagios/etc/htpasswd.users?nagiosadmin [root@localhost?~]#?systemctl?start?httpd.service [root@localhost?~]#?systemctl?start?nagios.service
http://192.168.146.128/nagios
不使用默認(rèn)nagiosadmin賬號(hào)，新增gxm賬號(hào)并配置權(quán)限，如果不配置點(diǎn)擊Hosts會(huì)報(bào)紅色錯(cuò)誤。
[root@localhost?~]#?htpasswd?-bc?/usr/local/nagios/etc/htpasswd.users?gxm?123456
[root@localhost?~]#?cd?/usr/local/nagios/etc/ [root@localhost?etc]#?sed?-i?\'s#nagiosadmin#gxm#g\'?cgi.cfg [root@localhost?etc]#?grep?gxm?cgi.cfg authorized_for_system_information=gxm authorized_for_configuration_information=gxm authorized_for_system_commands=gxm authorized_for_all_services=gxm authorized_for_all_hosts=gxm authorized_for_all_service_commands=gxm authorized_for_all_host_commands=gxm [root@localhost?etc]#?systemctl?restart??httpd.service
#檢查語法錯(cuò)誤
[root@localhost?etc]#?/usr/local/nagios/bin/nagios?-v?/usr/local/nagios/etc/nagios.cfg Nagios?Core?4.4.3 Copyright?(c)?2009-present?Nagios?Core?Development?Team?and?Community?Contributors Copyright?(c)?1999-2009?Ethan?Galstad Last?Modified:?2019-01-15 License:?GPL Website:?https://www.nagios.org Reading?configuration?data... ???Read?main?config?file?okay... ???Read?object?config?files?okay... Running?pre-flight?check?on?configuration?data... Checking?objects... ????Checked?8?services. ????Checked?1?hosts. ????Checked?1?host?groups. ????Checked?0?service?groups. ????Checked?1?contacts. ????Checked?1?contact?groups. ????Checked?24?commands. ????Checked?5?time?periods. ????Checked?0?host?escalations. ????Checked?0?service?escalations. Checking?for?circular?paths... ????Checked?1?hosts ????Checked?0?service?dependencies ????Checked?0?host?dependencies ????Checked?5?timeperiods Checking?global?event?handlers... Checking?obsessive?compulsive?processor?commands... Checking?misc?settings... Total?Warnings:?0 Total?Errors:???0 Things?look?okay?-?No?serious?problems?were?detected?during?the?pre-flight?check
3、安裝nagios插件（監(jiān)控功能通過插件完成）
上述安裝的Nagios主程序只是一個(gè)控制中心，而能夠起到服務(wù)監(jiān)測和系統(tǒng)監(jiān)測等功能的是眾多Nagios的插件，沒有插件的Nagios系統(tǒng)其實(shí)只是一個(gè)空殼。因此在安裝了Nagios平臺(tái)之后我們還需要安裝插件。
[root@localhost?~]#?yum?install?-y?gcc?glibc?glibc-common?make?gettext?automake?autoconf?wget?openssl-devel?net-snmp?net-snmp-utils?epel-release [root@localhost?~]#?yum?install?-y?perl-Net-SNMP 或者 [root@localhost?~]#?cd?/tmp [root@localhost?~]#?wget?https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm [root@localhost?~]#?rpm?-ihv?epel-release-latest-7.noarch.rpm [root@localhost?~]#?subscription-manager?repos?--enable=rhel-7-server-optional-rpms [root@localhost?~]#?yum?install?-y?gcc?glibc?glibc-common?make?gettext?automake?autoconf?wget?openssl-devel?net-snmp?net-snmp-utils [root@localhost?~]#?yum?install?-y?perl-Net-SNMP [root@localhost?~]#?cd?/tmp [root@localhost?~]#?wget?--no-check-certificate?-O?nagios-plugins.tar.gz?https://github.com/nagios-plugins/nagios-plugins/archive/release-2.2.1.tar.gz [root@localhost?~]#?tar?zxvf?nagios-plugins.tar.gz [root@localhost?~]#?cd?/tmp/nagios-plugins-release-2.2.1/ [root@localhost?nagios-plugins-release-2.2.1]#?./tools/setup [root@localhost?nagios-plugins-release-2.2.1]#?./configure [root@localhost?nagios-plugins-release-2.2.1]#?make [root@localhost?nagios-plugins-release-2.2.1]#?make?install [root@localhost?nagios-plugins-release-2.2.1]#?systemctl?start?nagios.service [root@localhost?nagios-plugins-release-2.2.1]#?systemctl?stop?nagios.service [root@localhost?nagios-plugins-release-2.2.1]#?systemctl?restart?nagios.service [root@localhost?nagios-plugins-release-2.2.1]#?systemctl?status?nagios.service [root@localhost?libexec]#?ll?/usr/local/nagios/libexec -rwxr-xr-x?1?root?root?210656?5月??31?11:54?check_apt -rwxr-xr-x?1?root?root???2354?5月??31?11:54?check_breeze -rwxr-xr-x?1?root?root?214653?5月??31?11:54?check_by_ssh lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_clamd?->?check_tcp -rwxr-xr-x?1?root?root?163022?5月??31?11:54?check_cluster -r-sr-xr-x?1?root?root?211527?5月??31?11:54?check_dhcp -rwxr-xr-x?1?root?root?227293?5月??31?11:54?check_disk -rwxr-xr-x?1?root?root???9477?5月??31?11:54?check_disk_smb -rwxr-xr-x?1?root?root?127110?5月??31?11:54?check_dummy -rwxr-xr-x?1?root?root???3868?5月??31?11:54?check_file_age -rwxr-xr-x?1?root?root???6512?5月??31?11:54?check_flexlm lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_ftp?->?check_tcp -rwxr-xr-x?1?root?root?209501?5月??31?11:54?check_hpjd -rwxr-xr-x?1?root?root?375004?5月??31?11:54?check_http -r-sr-xr-x?1?root?root?227225?5月??31?11:54?check_icmp -rwxr-xr-x?1?root?root?169900?5月??31?11:54?check_ide_smart -rwxr-xr-x?1?root?root??15283?5月??31?11:54?check_ifoperstatus -rwxr-xr-x?1?root?root??13435?5月??31?11:54?check_ifstatus lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_imap?->?check_tcp -rwxr-xr-x?1?root?root???6992?5月??31?11:54?check_ircd lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_jabber?->?check_tcp -rwxr-xr-x?1?root?root?187685?5月??31?11:54?check_load -rwxr-xr-x?1?root?root???6673?5月??31?11:54?check_log -rwxr-xr-x?1?root?root??22741?5月??31?11:54?check_mailq -rwxr-xr-x?1?root?root?173210?5月??31?11:54?check_mrtg -rwxr-xr-x?1?root?root?170431?5月??31?11:54?check_mrtgtraf -rwxr-xr-x?1?root?root?186817?5月??31?11:54?check_nagios lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_nntp?->?check_tcp lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_nntps?->?check_tcp -rwxr-xr-x?1?root?root?219815?5月??31?11:54?check_nt -rwxr-xr-x?1?root?root?218463?5月??31?11:54?check_ntp -rwxr-xr-x?1?root?root?208212?5月??31?11:54?check_ntp_peer -rwxr-xr-x?1?root?root?207193?5月??31?11:54?check_ntp_time -rwxr-xr-x?1?root?root?250160?5月??31?11:54?check_nwstat -rwxr-xr-x?1?root?root???9461?5月??31?11:54?check_oracle -rwxr-xr-x?1?root?root?193042?5月??31?11:54?check_overcr -rwxr-xr-x?1?root?root?223263?5月??31?11:54?check_ping lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_pop?->?check_tcp -rwxr-xr-x?1?root?root?224192?5月??31?11:54?check_procs -rwxr-xr-x?1?root?root?185576?5月??31?11:54?check_real -rwxr-xr-x?1?root?root???9687?5月??31?11:54?check_rpc -rwxr-xr-x?1?root?root???1537?5月??31?11:54?check_sensors lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_simap?->?check_tcp -rwxr-xr-x?1?root?root?268781?5月??31?11:54?check_smtp -rwxr-xr-x?1?root?root?269786?5月??31?11:54?check_snmp lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_spop?->?check_tcp -rwxr-xr-x?1?root?root?185227?5月??31?11:54?check_ssh lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_ssmtp?->?check_tcp -rwxr-xr-x?1?root?root?166806?5月??31?11:54?check_swap -rwxr-xr-x?1?root?root?252843?5月??31?11:54?check_tcp -rwxr-xr-x?1?root?root?186950?5月??31?11:54?check_time lrwxrwxrwx?1?root?root??????9?5月??31?11:54?check_udp?->?check_tcp -rwxr-xr-x?1?root?root?199442?5月??31?11:54?check_ups -rwxr-xr-x?1?root?root?163288?5月??31?11:54?check_uptime -rwxr-xr-x?1?root?root?157647?5月??31?11:54?check_users -rwxr-xr-x?1?root?root???3040?5月??31?11:54?check_wave -rwxr-xr-x?1?root?root?157770?5月??31?11:54?negate -rwxr-xr-x?1?root?root?151307?5月??31?11:54?urlize -rwxr-xr-x?1?root?root???1914?5月??31?11:54?utils.pm -rwxr-xr-x?1?root?root???2791?5月??31?11:54?utils.sh
4、安裝nrpe（在需要監(jiān)控的服務(wù)器上部署）
NRPE依賴于nagios-plugins，所以要一起安裝。
可參考：https://support.nagios.com/kb/article.php?id=515
[root@localhost?~]#?yum?install?-y?gcc?glibc?glibc-common?openssl?openssl-devel?perl?wget [root@localhost?~]#?cd?/tmp [root@localhost?~]#?wget?--no-check-certificate?-O?nrpe.tar.gz?https://github.com/NagiosEnterprises/nrpe/archive/nrpe-3.2.1.tar.gz [root@localhost?~]#?tar?zxvf?nrpe.tar.gz [root@localhost?~]#?cd?/tmp/nrpe-nrpe-3.2.1/ [root@localhost?nrpe-nrpe-3.2.1]#?./configure?--enable-command-args [root@localhost?nrpe-nrpe-3.2.1]#?make?all [root@localhost?nrpe-nrpe-3.2.1]#?make?install-groups-users [root@localhost?nrpe-nrpe-3.2.1]#?make?install [root@localhost?nrpe-nrpe-3.2.1]#?make?install-config [root@localhost?nrpe-nrpe-3.2.1]#?echo?>>?/etc/services [root@localhost?nrpe-nrpe-3.2.1]#?echo?\'#?Nagios?services\'?>>?/etc/services [root@localhost?nrpe-nrpe-3.2.1]#?echo?\'nrpe?5666/tcp\'?>>?/etc/services [root@localhost?nrpe-nrpe-3.2.1]#?make?install-init [root@localhost?nrpe-nrpe-3.2.1]#?systemctl?enable?nrpe.service
#添加nagios服務(wù)器IP，運(yùn)行服務(wù)器連接nrpe
[root@localhost?nrpe-nrpe-3.2.1]#?vi?/usr/local/nagios/etc/nrpe.cfg allowed_hosts=127.0.0.1,192.168.146.128 dont_blame_nrpe=1 [root@localhost?nrpe-nrpe-3.2.1]#?systemctl?start?nrpe.service [root@localhost?~]#?cat?/usr/lib/systemd/system/nrpe.service [root@localhost?nrpe-nrpe-3.2.1]#?/usr/local/nagios/libexec/check_nrpe?-H?127.0.0.1 NRPE?v3.2.1 [root@localhost?nrpe-nrpe-3.2.1]#?/usr/local/nagios/libexec/check_nrpe?-H?192.168.146.128 NRPE?v3.2.1
測試插件和NRPE
[root@localhost?nrpe-nrpe-3.2.1]#?vi?/usr/local/nagios/etc/nrpe.cfg command[check_load]=/usr/local/nagios/libexec/check_load?-w?15,10,5?-c?30,25,20 [root@localhost?nrpe-nrpe-3.2.1]#?/usr/local/nagios/libexec/check_nrpe?-H?127.0.0.1?-c?check_load WARNING?-?load?average:?0.06,?0.06,?0.09|load1=0.060;0.150;0.300;0;?load5=0.060;0.100;0.250;0;?load15=0.090;0.050;0.200;0; [root@localhost?~]#?netstat?-tnlp Active?Internet?connections?(only?servers) Proto?Recv-Q?Send-Q?Local?Address???????????Foreign?Address?????????State???????PID/Program?name???? tcp????????0??????0?0.0.0.0:22??????????????0.0.0.0:*???????????????LISTEN??????1062/sshd??????????? tcp????????0??????0?127.0.0.1:25????????????0.0.0.0:*???????????????LISTEN??????1372/master????????? tcp????????0??????0?0.0.0.0:5666????????????0.0.0.0:*???????????????LISTEN??????60275/nrpe?????????? tcp6???????0??????0?:::80???????????????????:::*????????????????????LISTEN??????57918/httpd????????? tcp6???????0??????0?:::22???????????????????:::*????????????????????LISTEN??????1062/sshd??????????? tcp6???????0??????0?::1:25??????????????????:::*????????????????????LISTEN??????1372/master????????? tcp6???????0??????0?:::5666?????????????????:::*????????????????????LISTEN??????60275/nrpe
5、安裝PNP插件（監(jiān)控功能通過插件完成）
可參考：https://www.cnblogs.com/caoguo/p/5022230.html
[root@localhost?~]#?yum?-y?install?rrdtool?librrds-perl?perl-rrdtool?-y [root@localhost?~]#?tar?zxvf?pnp4nagios-0.6.26.tar.gz [root@localhost?~]#?cd?pnp4nagios-0.6.26 [root@localhost?pnp4nagios-0.6.26]#?./configure?--with-nagios-user=nagios?--with-nagios-group=nagios [root@localhost?pnp4nagios-0.6.26]#?make?all [root@localhost?pnp4nagios-0.6.26]#?make?install [root@localhost?pnp4nagios-0.6.26]#?make?install-webconf [root@localhost?pnp4nagios-0.6.26]#?make?install-config [root@localhost?pnp4nagios-0.6.26]#?make?install-init [root@localhost?pnp4nagios-0.6.26]#?cd?./sample-config [root@localhost?pnp4nagios-0.6.26]#?make?install-webconf
配置pnp4nagios
[root@localhost?pnp4nagios-0.6.26]#?cd?/usr/local/pnp4nagios/etc/ [root@localhost?etc]#?mv?misccommands.cfg-sample?misccommands.cfg [root@localhost?etc]#?mv?rra.cfg-sample?rra.cfg [root@localhost?etc]#?mv?nagios.cfg-sample?nagios.cfg [root@localhost?etc]#?cd?pages/ [root@localhost?pages]#?mv?web_traffic.cfg-sample?web_traffic.cfg [root@localhost?pages]#?cd?../check_commands/ [root@localhost?check_commands]#?mv?check_all_local_disks.cfg-sample?check_all_local_disks.cfg [root@localhost?check_commands]#?mv?check_nrpe.cfg-sample?check_nrpe.cfg [root@localhost?check_commands]#?mv?check_nwstat.cfg-sample?check_nwstat.cfg [root@localhost?check_commands]#?/etc/init.d/npcd?start [root@localhost?check_commands]#?chkconfig?npcd?on 配置Nagios數(shù)據(jù)輸出接口(以BULK模式運(yùn)行)詳情參考官網(wǎng)https://docs.pnp4nagios.org/pnp-0.6/config#bulk_mode：
[root@localhost?~]#?vi?/usr/local/nagios/etc/nagios.cfg process_performance_data=1?#默認(rèn)為0，修改為1 并在該文件中添加下面的內(nèi)容 # #?service?performance?data # service_perfdata_file=/usr/local/pnp4nagios/var/service-perfdata service_perfdata_file_template=DATATYPE::SERVICEPERFDATA\\tTIMET::$TIMET$\\tHOSTNAME::$HOSTNAME$\\tSERVICEDESC::$SERVICEDESC$\\tSERVICEPERFDATA::$SERVICEPERFDATA$\\tSERVICECHECKCOMMAND::$SERVICECHECKCOMMAND$\\tHOSTSTATE::$HOSTSTATE$\\tHOSTSTATETYPE::$HOSTSTATETYPE$\\tSERVICESTATE::$SERVICESTATE$\\tSERVICESTATETYPE::$SERVICESTATETYPE$ service_perfdata_file_mode=a service_perfdata_file_processing_interval=15 service_perfdata_file_processing_command=process-service-perfdata-file # #?host?performance?data?starting?with?Nagios?3.0 # host_perfdata_file=/usr/local/pnp4nagios/var/host-perfdata host_perfdata_file_template=DATATYPE::HOSTPERFDATA\\tTIMET::$TIMET$\\tHOSTNAME::$HOSTNAME$\\tHOSTPERFDATA::$HOSTPERFDATA$\\tHOSTCHECKCOMMAND::$HOSTCHECKCOMMAND$\\tHOSTSTATE::$HOSTSTATE$\\tHOSTSTATETYPE::$HOSTSTATETYPE$ host_perfdata_file_mode=a host_perfdata_file_processing_interval=15 host_perfdata_file_processing_command=process-host-perfdata-file
配置command.cfg：
[root@localhost?~]#?vi?/usr/local/nagios/etc/objects/commands.cfg
在該文件中添加下面的內(nèi)容
define?command{
???????command_name????process-service-perfdata-file
???????command_line????/usr/local/pnp4nagios/libexec/process_perfdata.pl?--bulk=/usr/local/pnp4nagios/var/service-perfdata
}
define?command{
???????command_name????process-host-perfdata-file
???????command_line????/usr/local/pnp4nagios/libexec/process_perfdata.pl?--bulk=/usr/local/pnp4nagios/var/host-perfdata
}在模板配置文件中添加圖表圖標(biāo)模板：
[root@localhost?~]#?vi?/usr/local/nagios/etc/objects/templates.cfg
在該文件中添加下面的內(nèi)容
define?host?{
???name???????host-pnp
???action_url?/pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_
???register???0
}
define?service?{
??name???????service-pnp
??action_url?/pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$
???register???0
}在監(jiān)控主機(jī)和服務(wù)中調(diào)用圖表模板（在主機(jī)和服務(wù)后面添加新的模板）：
[root@localhost ~]# vi /usr/local/nagios/etc/objects/localhost.cfg
按下面的內(nèi)容修改（不是添加）該文件
define?host{
????????use?????????????????????linux-server,host-pnp??????????????????????????
????????host_name???????????????localhost
????????alias???????????????????localhost
????????address?????????????????127.0.0.1
????????}
define?service{
????????use????????????????????????????local-service,service-pnp
????????host_name???????????????????????localhost
????????service_description?????????????PING
????????check_command???????????check_ping!100.0,20%!500.0,60%
????????}
define?service{
????????use????????????????????????????local-service,service-pnp
????????host_name???????????????????????localhost
????????service_description?????????????Root?Partition
????????check_command???????????check_local_disk!20%!10%!/
????????}重啟nagios和apache：
[root@localhost?~]#?systemctl?restart?nagios.service [root@localhost?~]#?systemctl?restart?httpd.service
訪問nagios界面即可看到圖表小圖標(biāo)：
要全綠色，不綠色就按照提示解決。
[root@localhost?check_commands]#?mv?/usr/local/pnp4nagios/share/install.php?/tmp/
全綠色后刷新，正常如下：
監(jiān)控本機(jī)
==============================================================================
[root@localhost?~]#?cd?/usr/local/nagios/etc/objects
[root@localhost?~]#?vim?localhost.cfg
define?host{
???????use?????????????????????linux-server??????????????????????????????????????
???????host_name???????????????localhost
???????alias???????????????????localhost
???????address?????????????????127.0.0.1
???????}
#?Define?an?optional?hostgroup?for?Linux?machines
define?hostgroup{
???????hostgroup_name??linux-servers?;?The?name?of?the?hostgroup
???????alias???????????Linux?Servers?;?Long?name?of?the?group
???????members?????????localhost?????;?Comma?separated?list?of?hosts?that?belong?to?this?group
???????}
#?Define?a?service?to?ftp?the?local?machine
define?service{
???????use?????????????????????????????local-service?????????;?Name?of?service?template?to?use
???????host_name???????????????????????localhost
???????service_description?????????????FTP
???????check_command???????????????????check_ftp
???????}
#?Define?a?service?to?nfs?the?local?machine
define?service{
???????use?????????????????????????????local-service?????????;?Name?of?service?template?to?use
???????host_name???????????????????????localhost
???????service_description?????????????NFS
???????check_command???????????????????check_tcp!2049
???????}監(jiān)控遠(yuǎn)程主機(jī)
==============================================================================
[root@localhost?~]#?cd?/usr/local/nagios/etc/objects
[root@localhost?~]#?cp?localhost.cfg?192.168.0.164.cfg
[root@localhost?~]#?vim?192.168.0.164.cfg
define?host{
???????use?????????????????????linux-server????
???????host_name???????????????testserver
???????alias???????????????????host196
???????address?????????????????192.168.0.164
???????}
#define?hostgroup{
#????????hostgroup_name??testserver?;?The?name?of?the?hostgroup
#????????alias???????????host;?Long?name?of?the?group
#????????members?????????localhost???;?Comma?separated?list?of?hosts?that?belong?to?this?group
#}
define?service{
???????use?????????????????????????????local-service
???????host_name???????????????????????testserver
???????service_description?????????????PING
???????check_command???????????????????check_ping!100.0,20%!500.0,60%
???????}
define?service{
???????use?????????????????????????????local-service??
host_name???????????????????????testserver
???????service_description?????????????HTTP
???????check_command???????????????????check_http
#???????notifications_enabled???????????0
???????}
define?service{
???????use?????????????????????????????local-service
???????host_name???????????????????????testserver
???????service_description?????????????NFS
???????check_command???????????????????check_tcp!2049
#???????notifications_enabled???????????0
???????}=============================================================================
更改主配置文件
[root@localhost?~]#?vim?/usr/local/nagios/etc/nagios.cfg 添加一行 cfg_file=/usr/local/nagios/etc/objects/192.168.122.100.cfg 檢測新的配置文件是否正確 [root@localhost?~]#?/usr/local/nagios/bin/nagios?-v?/usr/local/nagios/etc/nagios.cfg Total?Warnings:?0 Total?Errors:???0 Things?look?okay?-?No?serious?problems?were?detected?during?the?pre-flight?check
重啟nagios，web登錄確認(rèn)是否新增了主機(jī)。
監(jiān)控本機(jī)和遠(yuǎn)程主機(jī)參考：
https://blog.51cto.com/1585654/1386857
nagios默認(rèn)不用Mysql存儲(chǔ)，可以使用NDOUtils插件實(shí)現(xiàn)MYSQL存儲(chǔ)：
https://support.nagios.com/kb/article/ndoutils-installing-ndoutils-406.html
文章標(biāo)題：CentOS7.2部署Nagios4.4.3
URL標(biāo)題：http://jinyejixie.com/article34/chogpe.html
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