数据中心控系统之Zabbix基础

[root@node02 ~]# cat /etc/yum.repos.d/mariadb.repo
[mariadb]
name=mariadb repo
baseurl=https://mirrors.tuna.tsinghua.edu.cn/mariadb/mariadb-10.0.38/yum/centos/7/x86_64/
gpgcheck=0
[root@node02 ~]#

[root@node02 ~]# yum install -y MariaDB-server

[root@node02 ~]# cat /etc/my.cnf.d/zabbix-database.cnf
[mysqld]
bind-address = 0.0.0.0
default-storage-engine = innodb
innodb_file_per_table = on
max_connections = 4096
collation-server = utf8_general_ci
character-set-server = utf8
skip_name_resolve
[root@node02 ~]#

[root@node02 ~]# systemctl start mariadb
Failed to start mariadb.service: Unit not found.
[root@node02 ~]# /etc/init.d/mysql start
Starting MariaDB.201117 23:15:28 mysqld_safe Logging to '/var/lib/mysql/node02.test.org.err'.
201117 23:15:28 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
SUCCESS!
[root@node02 ~]# ss -tnl
State      Recv-Q Send-Q           Local Address:Port                          Peer Address:Port
LISTEN     0      128                          *:22                                       *:*
LISTEN     0      100                  127.0.0.1:25                                       *:*
LISTEN     0      128                          *:3306                                     *:*
LISTEN     0      128                         :::22                                      :::*
LISTEN     0      100                        ::1:25                                      :::*
[root@node02 ~]#

[root@node02 ~]# chkconfig --level 3 mysql on
[root@node02 ~]# chkconfig --list mysql
Note: This output shows SysV services only and does not include native
systemd services. SysV configuration data might be overridden by native
systemd configuration.
If you want to list systemd services use 'systemctl list-unit-files'.
To see services enabled on particular target use
'systemctl list-dependencies [target]'.
mysql           0:off   1:off   2:on    3:on    4:on    5:on    6:off
[root@node02 ~]#

[root@node02 ~]# mysql_secure_installation
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none):
OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.
Set root password? [Y/n] y
New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
... Success!
By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB 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? [Y/n] 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? [Y/n] y
... Success!
By default, MariaDB 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? [Y/n] 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? [Y/n] y
... Success!
Cleaning up...
All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.
Thanks for using MariaDB!
[root@node02 ~]#

[root@node02 ~]# mysql -uroot -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 12
Server version: 10.0.38-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> create database zabbix character set utf8 collate utf8_bin;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]>

MariaDB [(none)]> grant all privileges on zabbix.* to zabbix@'192.168.%.%' identified by 'admin123.com';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>

[root@node03 ~]# cat /etc/yum.repos.d/zabbix.repo
[zabbix-server]
name=zabbix-server repo
baseurl=https://mirrors.aliyun.com/zabbix/zabbix/4.0/rhel/7/x86_64/
gpgcheck=0
[non-supported]
name=non-supported repo
baseurl=https://mirrors.aliyun.com/zabbix/non-supported/rhel/7/x86_64/
gpgcheck=0
[root@node03 ~]#

[root@node03 ~]# scp /etc/yum.repos.d/zabbix.repo node01:/etc/yum.repos.d/
zabbix.repo                                                                   100%  242   165.8KB/s   00:00
[root@node03 ~]#

[root@node03 ~]# yum install -y zabbix-server-mysql zabbix-agent

[root@node03 ~]# zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -h192.168.0.42 -uzabbix -p zabbix
Enter password:
[root@node03 ~]#

[root@node03 ~]# mysql -h192.168.0.42 -uzabbix -padmin123.com zabbix -e 'show tables;'|wc -l
145
[root@node03 ~]#

[root@node03 ~]# grep -Ei ^[^#] /etc/zabbix/zabbix_server.conf
ListenPort=10051
LogFile=/var/log/zabbix/zabbix_server.log
LogFileSize=0
PidFile=/var/run/zabbix/zabbix_server.pid
SocketDir=/var/run/zabbix
DBHost=192.168.0.42
DBName=zabbix
DBUser=zabbix
DBPassword=admin123.com
DBPort=3306
SNMPTrapperFile=/var/log/snmptrap/snmptrap.log
Timeout=4
AlertScriptsPath=/usr/lib/zabbix/alertscripts
ExternalScripts=/usr/lib/zabbix/externalscripts
LogSlowQueries=3000
[root@node03 ~]#

[root@node03 ~]# grep -Ei ^[^#] /etc/zabbix/zabbix_agentd.conf
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=0
Server=127.0.0.1
ListenPort=10050
ListenIP=0.0.0.0
StartAgents=3
ServerActive=127.0.0.1
Hostname=Zabbix server
HostnameItem=system.hostname
Include=/etc/zabbix/zabbix_agentd.d/*.conf
[root@node03 ~]#

[root@node03 ~]# systemctl start zabbix-server.service
[root@node03 ~]# systemctl enable zabbix-server.service
Created symlink from /etc/systemd/system/multi-user.target.wants/zabbix-server.service to /usr/lib/systemd/system/zabbix-server.service.
[root@node03 ~]# ss -tnl
State      Recv-Q Send-Q           Local Address:Port                          Peer Address:Port
LISTEN     0      128                          *:22                                       *:*
LISTEN     0      100                  127.0.0.1:25                                       *:*
LISTEN     0      128                          *:10051                                    *:*
LISTEN     0      128                         :::22                                      :::*
LISTEN     0      100                        ::1:25                                      :::*
LISTEN     0      128                         :::10051                                   :::*
[root@node03 ~]#

[root@node03 ~]# systemctl start zabbix-agent.service
[root@node03 ~]# systemctl enable zabbix-agent.service
Created symlink from /etc/systemd/system/multi-user.target.wants/zabbix-agent.service to /usr/lib/systemd/system/zabbix-agent.service.
[root@node03 ~]# ss -tnl
State      Recv-Q Send-Q           Local Address:Port                          Peer Address:Port
LISTEN     0      128                          *:22                                       *:*
LISTEN     0      100                  127.0.0.1:25                                       *:*
LISTEN     0      128                          *:10050                                    *:*
LISTEN     0      128                          *:10051                                    *:*
LISTEN     0      128                         :::22                                      :::*
LISTEN     0      100                        ::1:25                                      :::*
LISTEN     0      128                         :::10051                                   :::*
[root@node03 ~]#

[root@node01 ~]# yum install -y zabbix-web-mysql

[root@node01 ~]# systemctl start httpd
[root@node01 ~]# systemctl enable httpd
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service.
[root@node01 ~]# ss -tnl
State      Recv-Q Send-Q           Local Address:Port                          Peer Address:Port
LISTEN     0      128                          *:22                                       *:*
LISTEN     0      100                  127.0.0.1:25                                       *:*
LISTEN     0      128                         :::80                                      :::*
LISTEN     0      128                         :::22                                      :::*
LISTEN     0      100                        ::1:25                                      :::*
[root@node01 ~]#