监控系统项目实施--安装与部署-- MySQL数据库

在后续的安装中出现了很多问题，多为账号，还有字符集导致的。安装zabbix，需要使用之前的密码设置格式，还有最重要的字符集是utf8。

主机配置

[root@zabbix-mysql01 ~]# cat /etc/hosts 10.10.10.201 zabbix-mysql01 10.10.10.202 zabbix-mysql02

安装mysql

[root@zabbix-mysql01 ~]#rpm -ivh http://repo.mysql.com/yum/mysql-8.0-community/el/7/x86_64/mysql80-community-release-el7-3.noarch.rpm [root@zabbix-mysql01 ~]# yum -y install mysql-community-server

配置Mysql

[root@zabbix-mysql01 ~]# cat /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql symbolic-links=0 character-set-server=utf8 innodb_file_per_table=1 innodb_data_file_path=ibdata1:10M:autoextend server_id=1 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid [root@zabbix-mysql02 ~]# cat /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql symbolic-links=0 character-set-server=utf8 innodb_file_per_table=1 innodb_data_file_path=ibdata1:10M:autoextend server_id=2 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid

启动数据库

先启动主节点，备节点暂时不启动。 [root@zabbix-mysql01 ~]# systemctl start mysqld [root@zabbix-mysql01 ~]#

修改密码

首先查找临时密码 tail -100 /var/log/messages Mar 19 22:30:11 zabbix-mysql01 mysqld_pre_systemd: 2021-03-19T14:30:11.846201Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.23) initializing of server in progress as process 3341 Mar 19 22:30:11 zabbix-mysql01 mysqld_pre_systemd: 2021-03-19T14:30:11.847519Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous. Mar 19 22:30:11 zabbix-mysql01 mysqld_pre_systemd: 2021-03-19T14:30:11.851720Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started. Mar 19 22:30:12 zabbix-mysql01 mysqld_pre_systemd: 2021-03-19T14:30:12.117691Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended. Mar 19 22:30:12 zabbix-mysql01 mysqld_pre_systemd: 2021-03-19T14:30:12.680672Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: Viop6I6:eWS! [root@zabbix-mysql01 ~]# mysql -uroot -p Enter password: mysql> alter user 'root'@'localhost' identified by 'Root@123456'; mysql> FLUSH PRIVILEGES; 注意zabbix的数据库应该用 utf8,而不应用utf8mb4; 设置密码应该采用 #mysql> create database zabbix character set utf8mb4; mysql> create database zabbix character set utf8; mysql> select host,user from mysql.user; mysql> CREATE USER 'zabbix'@'%' IDENTIFIED BY 'Root@123456'; mysql> grant all privileges on *.* to 'zabbix'@'%' ; mysql> FLUSH PRIVILEGES; mysql> select host,user from mysql.user; mysql> CREATE USER 'zabbix'@'localhost' IDENTIFIED BY 'Root@123456'; mysql> CREATE USER 'zabbix'@'127.0.0.1' IDENTIFIED BY 'Root@123456'; mysql> grant all privileges on *.* to 'zabbix'@'localhost' ; mysql> grant all privileges on *.* to 'zabbix'@'127.0.0.1' ; mysql> FLUSH PRIVILEGES; 设置密码应该采用mysql_native_password方式 alter user 'zabbix'@'%' identified with mysql_native_password by 'Root@123456'; alter user 'zabbix'@'127.0.0.1' identified with mysql_native_password by 'Root@123456'; alter user 'zabbix'@'localhost' identified with mysql_native_password by 'Root@123456';

导入数据库文件

导入数据库文件,该文件需要安装zabbix插件，可参考之前安装的步骤进行操作 wget http://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-2.el7.noarch.rpm rpm -ivh zabbix-release-4.0-2.el7.noarch.rpm 安装 yum -y install gcc make openldap-devel libssh2-devel net-snmp-devel curl-devel unixODBC-devel OpenIPMI-devel java-devel net-snmp-devel openldap-devel gnutls-devel sqlite-devel sqlite-devel curl-devel libxml2-devel libevent-devel openssl-devel yum install -y httpd php php-mysql yum -y install zabbix-server-mysql yum -y install zabbix-agent 安装这些以后，就能有create.sql.gz包 cd /usr/share/doc/zabbix-server-mysql-4.0.29 gunzip create.sql.gz mysql -uzabbix -pRoot@123456 -h127.0.0.1 use zabbix source create.sql

Mysql数据库主库配置

以下操作在主服务器上进行 停止Mysql主库服务 systemctl stop mysqld

同步主库文件到从库

[root@zabbix-mysql01 ~]# rsync -av -e "ssh -p 22" /var/lib/mysql/ root@10.10.10.202:/var/lib/mysql/

启动主库服务

[root@zabbix-mysql01 ~]# systemctl start mysqld

主库上配置复制数据库用户

[root@zabbix-mysql01 ~]# mysql -uroot -pRoot@123456 mysql> create user 'repl'@'%' identified with mysql_native_password by 'Root@123456'; Query OK, 0 rows affected (0.00 sec) mysql> grant replication client,replication slave on *.* to 'repl'@'%'; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql>

查看主库运行状态

mysql> show master status\G *************************** 1. row *************************** File: binlog.000004 Position: 846 Binlog_Do_DB: Binlog_Ignore_DB: Executed_Gtid_Set: 1 row in set (0.00 sec)

MYSQL 数据库从库的配置

启动从节点

需要从节点的/var/lib/mysql/auto.cnf [root@zabbix-mysql02 mysql]# systemctl start mysqld

连接主库

change master to master_host='10.10.10.201', MASTER_USER='repl', master_password='Root@123456', master_port=3306, master_log_file='binlog.000004', master_log_pos=846, master_connect_retry=10;

查看状态

mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 10.10.10.201 Master_User: repl Master_Port: 3306 Connect_Retry: 10 Master_Log_File: binlog.000004 Read_Master_Log_Pos: 846 Relay_Log_File: zabbix-mysql02-relay-bin.000003 Relay_Log_Pos: 321 Relay_Master_Log_File: binlog.000004 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 846 Relay_Log_Space: 539 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: 9d590336-88bf-11eb-905e-000c29a5e8a0 Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 0 Network_Namespace: 1 row in set, 1 warning (0.00 sec)

如果不删除从节点的auto.cnf文件，则会报错

mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Master_Host: 10.10.10.201 Master_User: repl Master_Port: 3306 Connect_Retry: 10 Master_Log_File: binlog.000004 Read_Master_Log_Pos: 846 Relay_Log_File: zabbix-mysql02-relay-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: binlog.000004 Slave_IO_Running: No Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 846 Relay_Log_Space: 156 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 13117 Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work. Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: 210320 00:34:09 Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 0 Network_Namespace: 1 row in set, 1 warning (0.01 sec)