[Zabbix] Zabbix Server Install - CentOS7 & MySQL & Nginx

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[ Zabbix ]

• Zabbix는 모든 종류의 IT 인프라, 서비스, 애플리케이션, 리소스 모니터링을 위한 솔루션입니다.

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[ TEST 환경 구성 ]

 

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[ Zabbix Server 설치 ]

• https://www.zabbix.com/download 접속
• 구성하려는 Zabbix Version, OS, Database, WebServer를 선택

• Zabbix Server 설치

# Zabbix Repository 추가
[root@zabbix-server ~]# rpm -Uvh https://repo.zabbix.com/zabbix/5.0/rhel/7/x86_64/zabbix-release-5.0-1.el7.noarch.rpm

# Zabbix Server / Agent 설치
[root@zabbix-server ~]# yum install zabbix-server-mysql zabbix-agent

• Zabbix Frontend 설치

# ReadHat Software Collections 활성화
[root@zabbix-server ~]# yum install centos-release-scl

# Zabbix Frontend Repository 활성화
[root@zabbix-server ~]# vi /etc/yum.repos.d/zabbix.repo

# enabled 값 0에서 1로 변경 후 저장
-------------------------------------------------------
[zabbix-frontend]
...
enabled=1
...
-------------------------------------------------------

# Zabbix Frontend 설치
[root@zabbix-server ~]# yum install zabbix-web-mysql-scl zabbix-nginx-conf-scl

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[ MySQL 5.7 설치 ]

• MySQL 5.7 설치

# MySQL 5.7 Repository 설치
[root@zabbix-server ~]# rpm -ivh https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

# MySQL 5.7 설치
[root@zabbix-server ~]# yum install -y mysql-community-server mysql-community-devel

# MySQL 서비스 시작
[root@zabbix-server ~]# systemctl start mysqld

• MySQL 5.7 초기 설정 시작

# 초기 설정 시작 전 초기 암호 획득
[root@zabbix-server ~]# grep 'password' /var/log/mysqld.log
2021-07-27T05:49:45.902184Z 1 [Note] A temporary password is generated for root@localhost: s3t,goioPH=p

# 초기 설정 시작
[root@zabbix-server ~]# mysql_secure_installation

----------------------------------------------------------------------------------
New password:

Re-enter new password:

Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Success.


Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
Success.

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.


Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
 - Dropping test database...
Success.

 - Removing privileges on test database...
Success.

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
Success.

All done!
----------------------------------------------------------------------------------

• MySQL UTF8 설정 및 서비스 재시작

[root@zabbix-server ~]# vi /etc/my.cnf

-------------------------------------------------------------------------------------
[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8

datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
-------------------------------------------------------------------------------------

[root@zabbix-server ~]# systemctl restart mysqld

• Zabbix Database 생성 및 Zabbix Database 계정생성

[root@zabbix-server ~]# mysql -uroot -p

-------------------------------------------------------------------
mysql> create database zabbix character set utf8 collate utf8_bin;
mysql> create user zabbix@localhost identified by 'password';
mysql> grant all privileges on zabbix.* to zabbix@localhost;
mysql> quit;
-------------------------------------------------------------------

• Zabbix 초기 Database Schema와 Data를 MySQL Zabbix Database에 Import

[root@zabbix-server ~]# zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -uzabbix -p zabbix​

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[ Zabbix Server 설정 ]

• Zabbix Server Configration 설정

[root@zabbix-server ~]# vi /etc/zabbix/zabbix_server.conf

# Zabbix Server Config 파일의 DBPassword 입력 후 저장
------------------------------------------------------------------
...
### Option: DBPassword
#       Database password.
#       Comment this line if no password is used.
#
# Mandatory: no
# Default:
DBPassword=password
...
------------------------------------------------------------------

• Zabbix Nginx 설정

[root@zabbix-server ~]# vi /etc/opt/rh/rh-nginx116/nginx/conf.d/zabbix.conf

# Zabbix Nginx Config 파일의 listen, server_name 주석해제 후 입력
------------------------------------------------------------------
server {
        listen          80;
        server_name     192.168.10.140;
...
}
------------------------------------------------------------------

• Zabbix PHP 설정

[root@zabbix-server ~]# vi /etc/opt/rh/rh-php72/php-fpm.d/zabbix.conf

# Zabbix PHP Config 파일에 nginx 추가 및 Timezone 설정
------------------------------------------------------------------
[zabbix]
...
listen.acl_users = apache,nginx
...
php_value[date.timezone] = Asia/Seoul
------------------------------------------------------------------

• Zabbix Server 시작 및 시작프로그램 등록

[root@zabbix-server ~]# systemctl restart zabbix-server zabbix-agent rh-nginx116-nginx rh-php72-php-fpm
[root@zabbix-server ~]# systemctl enable zabbix-server zabbix-agent rh-nginx116-nginx rh-php72-php-fpm

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[ Zabbix Server 시작 시 Nginx 에러 처리 ]

[root@zabbix-server ~]# systemctl restart zabbix-server zabbix-agent rh-nginx116-nginx rh-php72-php-fpm

# 아래와 같이 Nginx에 대한 에러 발생
Job for rh-nginx116-nginx.service failed because the control process exited with error code. See "systemctl status rh-nginx116-nginx.service" and "journalctl -xe" for details.

# "systemctl status rh-nginx116-nginx.service" and "journalctl -xe" 확인 시 아래와 같은 Nginx HTTP and reverse proxy server 에러 발생
Jul 27 15:10:29 zabbix-server systemd[1]: Failed to start The nginx HTTP and reverse proxy server.

# Zabbix 관련 모든 서비스 중지
[root@zabbix-server ~]# systemctl stop zabbix-server zabbix-agent rh-nginx116-nginx rh-php72-php-fpm

# netstat -anpt로 열려있는 Port 확인
[root@zabbix-server ~]# netstat -anpt
----------------------------------------
....
tcp6       0      0 :::3306                 :::*                    LISTEN      3235/mysqld
tcp6       0      0 :::80                   :::*                    LISTEN      3347/nginx: master
tcp6       0      0 :::22                   :::*                    LISTEN      1190/sshd
....
----------------------------------------

# Zabbix 관련 모든 서비스를 중지하였음에도 80 Port가 열려있음
# ps-ef | grep nginx로 실행중인 Nginx 프로세스 확인
[root@zabbix-server ~]# ps -ef | grep nginx
root       3347      1  0 15:10 ?        00:00:00 nginx: master process /opt/rh/rh-nginx116/root/usr/sbin/nginx
nginx      3348   3347  0 15:10 ?        00:00:00 nginx: worker process
nginx      3349   3347  0 15:10 ?        00:00:00 nginx: worker process
nginx      3350   3347  0 15:10 ?        00:00:00 nginx: worker process
nginx      3351   3347  0 15:10 ?        00:00:00 nginx: worker process
root       3579   2152  0 15:17 pts/0    00:00:00 grep --color=auto nginx

# Nginx 프로세스를 강제로 종료
[root@zabbix-server ~]# kill -9 3347 3348 3349 3350 3351

[root@zabbix-server ~]# ps -ef | grep nginx
root       3583   2152  0 15:18 pts/0    00:00:00 grep --color=auto nginx

# Zabbix 관련 서비스 재시작
[root@zabbix-server ~]# systemctl restart zabbix-server zabbix-agent rh-nginx116-nginx rh-php72-php-fpm

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[ Zabbix Server Web 접속 및 초기 설정]

• http://192.168.1.140 웹브라우저 접속

Zabbix Server Web 초기 설정

Zabbix Server 요구사항 체크

Zabbix Server Database 설정 / Zabbix MySQL 계정 및 암호 입력

Zabbix Server 사용포트 및 호스트정보 입력

Zabbix Server Web 설정 최종 확인

Zabbix Server Web 설정 마무리

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[ Zabbix Login ]

초기 계정 Admin / zabbix

 

Zabbix Dashbord