zabbix3.0 on CentOS7

目的

Centos7にZabbix3.0をインストールする

環境

• AWS(検証用なので低スペックタイプを使用)
  • EC2:t2.nano
    • gp2:8GB
  • RDS:db.t2.micro
    • gp2:30GB>理論値で90IOPS
• CentOS Linux release 7.2.1511 (Core)
• zabbix-server-mysql-3.0.1-1.el7.x86_64

設定

CentOS

$ sudo localectl set-locale LANG=ja_JP.utf8
$ localectl status
   System Locale: LANG=ja_JP.utf8
       VC Keymap: us
      X11 Layout: us

$ timedatectl list-timezones | grep Tokyo
Asia/Tokyo
$ sudo timedatectl set-timezone Asia/Tokyo
$ timedatectl status

$ hostnamectl set-hostname <hostname>

$ sudo useradd <user>
$ sudo passwd <user>
$ sudo usermod -G wheel <user>
$ cat /etc/group
(snip)
wheel:x:10:centos,<user>
(snip)

$ sudo visudo
(snip)
## Allows people in group wheel to run all commands
%wheel   ALL=(ALL)       ALL
(snip)

/etc/login.defs

(snip)
# Only wheelgroup can login
SU_WHEEL_ONLY        yes
(snip)

/etc/pam.d/su

# アンコメントしてgroup=wheelを記述

# %PAM-1.0
auth            sufficient      pam_rootok.so
# Uncomment the following line to implicitly trust users in the "wheel" group.
# auth           sufficient      pam_wheel.so trust use_uid
# Uncomment the following line to require a user to be in the "wheel" group.
auth            required        pam_wheel.so use_uid group=wheel
auth            substack        system-auth
auth            include         postlogin
account         sufficient      pam_succeed_if.so uid = 0 use_uid quiet
account         include         system-auth
password        include         system-auth
session         include         system-auth
session         include         postlogin
session         optional        pam_xauth.so

---

zabbix3.0

MySQL Repositories

• mariadbは使用しないのでアンインストール

$ sudo yum list installed | grep maria
mariadb-libs.x86_64                        1:5.5.47-1.el7_2            @updates
$ sudo yum remove mariadb-libs.x86_64

• MySQL Repositoriesを登録

$ wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm
$ sudo rpm -Uvh mysql57-community-release-el7-7.noarch.rpm
$ sudo yum install mysql-community-client

RDS

• サーバにアタッチするバラメータグループのパラメータ編集でログ取得出来るようにフラグ1を立てる

  • slow_query_log
  • general_log

• zabbixフロントエンドの日本語文字化け対策として明示的にutf8とする

  • character_set_database
  • character_set_server

• 確認

mysql> show variables like 'character_set%';
+--------------------------+-------------------------------------------+
| Variable_name            | Value                                     |
+--------------------------+-------------------------------------------+
| character_set_client     | utf8                                      |
| character_set_connection | utf8                                      |
| character_set_database   | utf8                                      |
| character_set_filesystem | binary                                    |
| character_set_results    | utf8                                      |
| character_set_server     | utf8                                      |
| character_set_system     | utf8                                      |
| character_sets_dir       | /rdsdbbin/mysql-5.7.10.R1/share/charsets/ |
+--------------------------+-------------------------------------------+
8 rows in set (0.10 sec)

mysql> 

zabbix-server

• リポジトリ登録してインストール

$ sudo rpm -ivh http://repo.zabbix.com/zabbix/3.0/rhel/7/x86_64/zabbix-release-3.0-1.el7.noarch.rpm
$ sudo yum install zabbix-server-mysql zabbix-web-mysql zabbix-web-japanese zabbix-agent zabbix-get

• 初期スキーマとデータをインポート（2系とはやり方が少し違う）

$ cd /usr/share/doc/zabbix-server-mysql-3.0.1
$ zcat create.sql.gz | mysql -h <rds-endpoint> <db> -u <user> -p

• zabbix-server.conf(dbname,dbuserはデフォルトのzabbixにしてあるので変更なし)

/etc/zabbix/zabbix_server.conf

82a83,84
> DBHost=<rds-endpoint>
> 
115a118,119
> 
> DBPassword=<rds-password>

• ここで定義されている値を/etc/php.iniに適用する

/etc/httpd/conf.d/zabbix.conf

(snip)
<Directory "/usr/share/zabbix">
    Options FollowSymLinks
    AllowOverride None
    Require all granted

    <IfModule mod_php5.c>
        php_value max_execution_time 300
        php_value memory_limit 128M
        php_value post_max_size 16M
        php_value upload_max_filesize 2M
        php_value max_input_time 300
        php_value always_populate_raw_post_data -1
        # php_value date.timezone Europe/Riga
    </IfModule>
</Directory>
(snip)

/etc/php.ini

384c384
< max_execution_time = 30
---
> max_execution_time = 300
394c394
< max_input_time = 30
---
> max_input_time = 300
698c698
< ; always_populate_raw_post_data = On
---
> always_populate_raw_post_data = -1
878c878
< ; date.timezone = Europe/Riga
---
> date.timezone = Asia/Tokyo

• zabbix-agent.conf

/etc/zabbix/zabbix_agentd.conf

96a97
>
104a106,107
> ListenPort=10050
>
147c150
< Hostname=Zabbix server
---
> #Hostname=Zabbix server
155c158
< # HostnameItem=system.hostname
---
> HostnameItem=system.hostname

• Apache

/var/www

$ sudo ln -s /usr/share/zabbix zabbix

/etc/httpd/conf/httpd.conf

119c119
< DocumentRoot "/var/www/html"
---
> DocumentRoot "/var/www/zabbix"
125c125
<     AllowOverride None
---
>     AllowOverride All
131c131
< <Directory "/var/www/html">
---
> <Directory "/var/www/zabbix">
144c144
<     Options Indexes FollowSymLinks
---
>     Options FollowSymLinks
151c151
<     AllowOverride None
---
>     AllowOverride All

• フロントエンド

$ sudo systemctl enable httpd.service && sudo systemctl enable zabbix-server.service && sudo systemctl enable zabbix-agent.service
$ sudo systemctl start httpd && sudo systemctl start zabbix-server && sudo systemctl start zabbix-agent