1.主從關係建立
配置mysql-master端：
1）修改mysql-master的配置文件
[root@localhost ~]# vim /etc/my.cnf
[mysqld]
server_id=1
innodb_file_per_table
datadir=/data/mysql
socket=/var/lib/mysql/mysql.sock
log-bin=/data/log-bin/bin
binlog_format=row
……2）啓動mysql服務，並授權從服務用戶
[root@localhost ~]# systemctl start mariadb
[root@localhost ~]# systemctl enable mariadb3）查看當前二進制日誌位置
MariaDB [(none)]> show master logs;
+------------+-----------+
| Log_name | File_size |
+------------+-----------+
| bin.000001 | 307 |4）授予從服務用戶權限
MariaDB [(none)]> grant REPLICATION CLIENT on *.* to slave@'192.168.1.16' identified by 'slave';5）刷新權限
MariaDB [(none)]> flush privileges;配置mysql-slave端：
1）修改從服務mysql-slave的數據庫配置文件
[root@192 ~]# vim /etc/my.cnf
[mysqld]
server_id=2
read_only
innodb_file_per_table
datadir=/data/mysql
socket=/var/lib/mysql/mysql.sock2）登入數據庫，建立組從連接
MariaDB [(none)]> change master to
master_host='192.168.1.15',
master_user='slave',
master_password='slave',
master_log_file='bin.000001',
master_log_pos=307;3）啓動主從連接
MariaDB [(none)]> start slave;4）查看主從連接是否成功
ariaDB [(none)]> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.15
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: bin.000003
Read_Master_Log_Pos: 321
Relay_Log_File: mariadb-relay-bin.000018
Relay_Log_Pos: 531
Relay_Master_Log_File: bin.000003
Slave_IO_Running: Yes #兩個io進程啓動，主從連接啓動
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: 321
Relay_Log_Space: 1113
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 #主從同步數據延遲
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_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative2.在從服務端mysql-slave配置zabbix-agent代理客戶端（centos7.6）
1）安裝zabbix-agent客戶端
root@localhost percona-zabbix-tools]# yum install zabbix-agent -y2）修改agent配置文件
[root@localhost ~]# vim /etc/zabbix/zabbix_agentd.conf
EnableRemoteCommands=1 #允許遠程命令
Server=192.168.1.14,192.168.1.20 #必須都指定監控服務端和proxy代理服務端的ip，否則會導致監控端或proxy代理端無法zabbix_get key值
ServerActive=192.168.1.20 #主動模式下的代理地址
Hostname=192.168.1.16 #爲方便區分主機名改爲本機的ip地址
Include=/etc/zabbix/zabbix_agentd.d/*.conf #包含的子目錄
UnsafeUserParameters=1 #允許參數中的所有字符傳遞給用戶定義的參數3）下載percona-zabbix監控mysql數據庫包
https://www.percona.com/downloads/percona-monitoring-plugins/LATEST/ #percona-zabbix官網地址
[root@localhost percona-zabbix-tools]# wget https://www.percona.com/downloads/percona-monitoring-plugins/percona-monitoring-plugins-1.1.8/binary/redhat/7/x86_64/percona-zabbix-templates-1.1.8-1.noarch.rpm4）查看安裝的percona-zabbix-templates生成的列表
[root@localhost percona-zabbix-tools]# rpm -ql percona-zabbix-templates
/var/lib/zabbix/percona
/var/lib/zabbix/percona/scripts
/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh
/var/lib/zabbix/percona/scripts/ss_get_mysql_stats.php
/var/lib/zabbix/percona/templates
/var/lib/zabbix/percona/templates/userparameter_percona_mysql.conf
/var/lib/zabbix/percona/templates/zabbix_agent_template_percona_mysql_server_ht_2.0.9-sver1.1.8.xml5）將percona的配置文件複製到/etc/zabbix/zabbix_agentd.d/目錄下
[root@localhost ~]#cp /var/lib/zabbix/percona/templates/userparameter_percona_mysql.conf /etc/zabbix/zabbix_agentd.d/6）percona配置文件裏保存的全是獲取mysql數據庫監控項的key
[root@localhost ~]# cat /etc/zabbix/zabbix_agentd.d/userparameter_percona_mysql.conf
UserParameter=MySQL.Com-select,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh jx
UserParameter=MySQL.Qcache-total-blocks,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh js
UserParameter=MySQL.Handler-read-prev,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh mt
UserParameter=MySQL.Sort-rows,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh ks
UserParameter=MySQL.Qcache-free-memory,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh jm
UserParameter=MySQL.pages-read,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh gu
…..
UserParameter=MySQL.Key-read-requests,/var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh gg7）查看/etc/zabbix/zabbix_agentd.d/目錄下的配置文件
[root@localhost ~]# ls /etc/zabbix/zabbix_agentd.d/
userparameter_mysql.conf userparameter_percona_mysql.conf8）刪除userparameter_mysql.conf 配置文件，爲agent自帶的配置文件，避免配置衝突
[root@localhost ~]# rm /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf9）配置php環境
[root@localhost ~]#yum install php php-mysql -y10）php連接本地數據庫配置
[root@localhost ~]# vim /var/lib/zabbix/percona/scripts/ss_get_mysql_stats.php.cnf
<?php
$mysql_user = 'root';
$mysql_pass = ''; #沒有設置密碼就爲空11）啓動zabbix-agent服務
[root@localhost ~]# systemctl restart zabbix-agent12）測試與本地數據庫的連接，若不能獲取數字，說明沒有裝PHP環境或者上一步配置的數據庫密碼不對
[root@localhost ~]# /var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh gg
413）當上一步測試通過後，會自動生成localhost-mysql_cacti_stats.txt文件，記錄了mysql當前運行狀態的數據信息
[[root@localhost ~]# cat /tmp/localhost-mysql_cacti_stats.txt
gg:4 gh:2 gi:2 gj:2 gk:5 gl:2832 gm:0 gn:3 go:0 gp:0 gq:8191 gr:8028 gs:163 gt:0 gu:157 gv:6 gw:27 gx:24 gy:175 gz:43 hg:18 hh:0 hi:0 hj:0 hk:-1 hl:0 hm:0 hn:-1 ho:0 hp:0 hq:0 hr:0 hs:0 ht:836 hu:1208 hv:11 hw:0 hx:0 hy:0 hz:0 ig:0 ih:35 ii:0 ij:29 ik:11 il:17 im:431 in:1024 io:431 ip:0 iq:0 ir:1 is:0 it:0 iu:1 iv:2 iw:1 ix:151 iy:0 iz:6 jg:0 jh:0 ji:0 jj:0 jk:0 jl:1 jm:1031336 jn:0 jo:0 jp:0 jq:0 jr:0 js:1 jt:1048576 ju:8 jv:0 jw:0 jx:1 jy:0 jz:0 kg:0 kh:0 ki:0 kj:0 kk:0 kl:0 km:0 kn:0 ko:0 kp:2 kq:0 kr:0 ks:0 kt:0 ku:2 kv:0 kw:6 kx:4886 ky:2250 kz:16777216 lg:0 lh:1632681 li:1632681 lj:1269 lk:32768 ll:0 lm:0 ln:-1 lo:0 lp:0 lq:0 lr:0 ls:0 lt:0 lu:1 lv:0 lw:0 lx:0 ly:0 lz:0 mg:0 mh:0 mi:0 mj:0 mk:0 ml:2 mm:3 mn:1 mo:0 mp:0 mq:5 mr:2 ms:0 mt:0 mu:0 mv:42 mw:0 mx:0 my:0 mz:0 ng:4 nh:0 ni:0 nj:-1 nk:-1 nl:-1 nm:-1 nn:0 no:1 np:0 nq:2 nr:2217568 ns:139112 nt:645374 nu:817696 nv:333952 nw:0 nx:-1 ny:-1 nz:-1 og:0 oh:24484864 oi:134217728 oj:0 ok:0 ol:-1 om:-1 on:-1 oo:-1 op:-1 oq:-1 or:-1 os:-1 ot:-1 ou:-1 ov:-1 ow:-1 ox:-1 oy:-1 oz:-1 pg:-1 ph:-1 pi:-1 pj:-1 pk:-1 pl:-1 pm:-1 pn:-1 po:-1 pp:-1 pq:-1 pr:-1 ps:-1 pt:-1 pu:-1 pv:-1 pw:-1 px:-1 py:0 pz:-1 qg:-1 qh:0 qi:-1 qj:-1 qk:-1 ql:-1 qm:-1 qn:-1 qo:158 qp:67614）必須刪除localhost-mysql_cacti_stats.txt文件，在本地自動生成的此文件權限爲root，否則在server端將無權限獲取mysql中的數據
root@localhost ~]# ll /tmp/localhost-mysql_cacti_stats.txt
-rw-r--r-- 1 root root 1228 Jul 15 23:52 /tmp/localhost-mysql_cacti_stats.txt15）將其刪除
root@localhost ~]#rm -rf /tmp/localhost-mysql_cacti_stats.txt3.在zabbix-server監控服務端創建zabbix-proxy的數據庫，和授權用戶
1）創建zabbix-proxy服務端的數據庫
MariaDB [(none)]> create database zabbix_proxy_active character set utf8 collate utf8_bin;2）創建zabbix-proxy服務端的數據庫授權用戶
MariaDB [(none)]> grant all privileges on zabbix_proxy_active.* to [email protected] identified by 'zabbix_proxy_active';3）查看創建的zabbix-proxy服務端數據庫
MariaDB [(none)]> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| mysql |
| performance_schema |
| zabbix |
| zabbix_proxy_active |
+---------------------+
5 rows in set (0.04 sec)4）權限刷新
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)5）查看授權用戶所擁有的權限
MariaDB [(none)]> show grants for zabbix_proxy_active@'192.168.1.20';
+-------------------------------------------------------------------------------------------------------------------------------+
| Grants for [email protected] |
+-------------------------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'zabbix_proxy_active'@'192.168.1.20' IDENTIFIED BY PASSWORD '*A63355661598C0599A07E41CE45344B7131CDF89' |
| GRANT ALL PRIVILEGES ON `zabbix_proxy_active`.* TO 'zabbix_proxy_active'@'192.168.1.20' |
+-------------------------------------------------------------------------------------------------------------------------------+4.在zabbix-proxy代理服務端進行配置（ubuntu系統18.4）
1）配置好倉庫源
root@ubuntu1804:~# wget https://repo.zabbix.com/zabbix/4.0/debian/pool/main/z/zabbix-release/zabbix-release_4.0-2+stretch_all.deb
root@ubuntu1804:~# dpkg -i zabbix-release_4.0-2+stretch_all.deb
root@ubuntu1804:~# apt update2）下載安裝proxy代理軟件
root@ubuntu1804:~# apt install zabbix-proxy-mysql -y3）安裝zabbix_get測試命令包
root@ubuntu1804:~# apt install zabbix-get -y4）查看安裝好的zabbix-proxy-mysql
root@ubuntu1804:~# dpkg -l | grep zabbix
ii zabbix-get 1:4.0.10-1+bionic amd64 Zabbix network monitoring solution - get
ii zabbix-proxy-mysql 1:4.0.10-1+bionic amd64 Zabbix network monitoring solution - proxy (MySQL)
ii zabbix-release 1:4.0-2+bionic all Zabbix official repository configuration5）測試是否能夠訪問zabbix-proxy的數據庫
root@ubuntu1804:~# mysql -uzabbix_proxy_active -pzabbix_proxy_active -h192.168.1.14
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 58
Server version: 10.1.40-MariaDB-0ubuntu0.18.04.1 Ubuntu 18.04
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)]>
MariaDB [(none)]> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| zabbix_proxy_active | #可以看到此數據庫
+---------------------+
2 rows in set (0.00 sec)6）返回shell的命令行初始化zabbix-proxy服務端的數據庫
root@ubuntu1804:~# zcat /usr/share/doc/zabbix-proxy-mysql/schema.sql.gz |
mysql -uzabbix_proxy_active -pzabbix_proxy_active -h192.168.1.14 zabbix_proxy_active7）在查看數據庫，zabbix-proxy的數據中是否導入表格
root@ubuntu1804:~# mysql -uzabbix_proxy_active -pzabbix_proxy_active -h192.168.1.14
MariaDB [(none)]> use zabbix_proxy_active;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
MariaDB [zabbix_proxy_active]> show tables;
……
| task_acknowledge |
| task_check_now |
| task_close_problem |
| task_remote_command |
| task_remote_command_result |
| timeperiods |
| trends |
| trends_uint |
| trigger_depends |
| trigger_discovery |
| trigger_tag |
| triggers |
| users |
| users_groups |
| usrgrp |
| valuemaps |
| widget |
| widget_field |
+-------------------------------+
144 rows in set (0.00 sec)8）修改proxy代理服務的配置文件
root@ubuntu1804:~# grep '^[a-Z]' /etc/zabbix/zabbix_proxy.conf
ProxyMode=0 #0表示開啓主動模式
Server=192.168.1.14 #服務端的ip地址
Hostname=zabbix_proxy_active #proxy代理主機名,在web端添加此代理是必須與此處主機名相同
ListenPort=10051 #proxy監聽的端口
LogFileSize=0 #關閉日誌自動輪換
DBHost=192.168.1.14 #數據庫主機
DBName=zabbix_proxy_active #數據庫名
DBUser=zabbix_proxy_active #數據庫用戶
DBPassword=zabbix_proxy_active #數據庫密碼
ProxyLocalBuffer=24 #數據訪問服務端後，本地保存數據時間爲720小時
ProxyOfflineBuffer=24 #未提交數據到服務端，本地保存數據的時間爲720小時
ConfigFrequency=10 #間隔多久到服務端獲取監控項信息，默認3600秒
DataSenderFrequency=5 #數據發送時間間隔，默認爲1秒
CacheSize=2G #保存監控項的最大內存，默認爲8M
HistoryCacheSize=2G #保存監控歷史數據的最大內存，默認爲16M
Timeout=30 #監控項超時時間，單位秒
LogSlowQueries=3000 #多久的數據庫查詢會被記錄到日誌，單位毫秒9）重新啓動proxy服務，載入配置好的配置文件
root@ubuntu1804:~# systemctl restart zabbix-proxy
root@ubuntu1804:~# systemctl enable zabbix-proxy10）查看proxy是否啓動
● zabbix-proxy.service - Zabbix Proxy
Loaded: loaded (/lib/systemd/system/zabbix-proxy.service; disabled; vendor preset: enabled)
Active: active (running) since Tue 2019-07-16 18:06:43 CST; 2h 36min ago
Process: 4514 ExecStop=/bin/kill -SIGTERM $MAINPID (code=exited, status=0/SUCCESS)
Process: 4515 ExecStart=/usr/sbin/zabbix_proxy -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 4527 (zabbix_proxy)
Tasks: 25 (limit: 2293)
CGroup: /system.slice/zabbix-proxy.service
├─4527 /usr/sbin/zabbix_proxy -c /etc/zabbix/zabbix_proxy.conf
├─4531 /usr/sbin/zabbix_proxy: configuration syncer [synced config 4069 bytes in 0.056334 sec, idle 3600 sec]
├─4532 /usr/sbin/zabbix_proxy: heartbeat sender [sending heartbeat message success in 0.001186 sec, idle 60 sec]
├─4533 /usr/sbin/zabbix_proxy: data sender [sent 0 values in 0.014112 sec, idle 1 sec]
├─4534 /usr/sbin/zabbix_proxy: housekeeper [deleted 1454 records in 0.135417 sec, idle for 1 hour(s)]
├─4535 /usr/sbin/zabbix_proxy: http poller #1 [got 0 values in 0.003211 sec, idle 5 sec]
……5.在zabbix-server端配置
1）在web端添加proxy代理
2）web端創建mysql-slave從服務主機並添加代理
3）添加一個mysql模板
4）監控服務端命令行測試，獲取msyql數據庫key的值，能夠獲取值，則證明監控端與被監控端成功建立連接
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k MySQL.Key-read-requests
4
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k MySQL.Qcache-free-memory
1031336
5）web端查看成功添加被監控的mysql從服務
6）在mysql從服務端查看到新生成的localhost-mysql_cacti_stats.txt文件是有監控服務端創建的，且屬主和屬組都爲zabbix
[root@localhost ~]# ll /tmp/localhost-mysql_cacti_stats.txt
-rw-rw-r-- 1 zabbix zabbix 1235 Jul 16 01:00 /tmp/localhost-mysql_cacti_stats.txt6.創建自定義mysql主從監控模板、監控項
在mysql-slave端：
1）編寫自定義監控腳本
[root@localhost ~]# vim /etc/zabbix/zabbix_agentd.d/mysql_monitor.sh
#!/bin/bash
master_slave_check(){
num1=`mysql -uroot -e "show slave status\G" | grep "Slave_IO_Running" | awk -F":" '{print $2}'`
num2=`mysql -uroot -e "show slave status\G" | grep "Slave_SQL_Running" | awk -F":" '{print $2}'`
if test $num1 == "Yes" && test $num2 == "Yes";then
echo 60
else
echo 120
fi
}
mysql_sync_delay(){
num=`mysql -uroot -e "show slave status\G" | grep "Seconds_Behind_Master" | awk -F":" '{print $2}'`
echo $num
}
menu(){
case $1 in
master_slave_check)
master_slave_check
;;
mysql_sync_delay)
mysql_sync_delay
;;
esac
}
menu $12）編寫自定義監控項的配置文件，含有監控項的鍵值
[root@localhost ~]# vim /etc/zabbix/zabbix_agentd.d/mysql-master-slave.conf
UserParameter=mysql_test[*],/etc/zabbix/zabbix_agentd.d/mysql_monitor.sh $13）腳本加上執行權限，避免在monitor-server端無權限獲取key的值
[root@localhost ~]# chmod a+x mysql_monitor.sh4）重新啓動本機的agent服務
[root@localhost ~]# systemctl restart zabbix-agent在zabbix-proxy服務端測試，是否能獲取被監控端mysql-slave服務的key的值
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k "mysql_test[mysql_sync_delay]"
0
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k "mysql_test[master_slave_check]"
60在zabbix-server端先執行測試，是否能獲取被監控端的key的值
1）利用zabbix-get命令測試
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k "mysql_test[mysql_sync_delay]"
0
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k "mysql_test[master_slave_check]"
602）當將mysql-slave服務停止，可以看到顯示的數值爲120，證明mysql-slave服務已斷開
root@ubuntu1804:~# zabbix_get -s 192.168.1.16 -p 10050 -k "mysql_test[master_slave_check]"
1203）在監控web端進行模板創建
4）給此模板創建一個應用集，是用來給監控項分類
5）在應用集中添加監控項
6）添加觸發的動作，當數值大於65證明連接失敗
7）給指定監控項創建圖形顯示
8）將自定義創建好的模板添加到需要監控的mysql-slave主機
9）再查看mysql-slave主機圖形，紅色爲警戒線，綠色爲正常
10）當mysql-slave服務掛掉時在查看此圖，獲取的數值已經超過紅色警戒線，證明主從連接斷開，已掛
11）儀表盤出現報警故障信息
12）進入報警查看詳情
13）顯示報警詳細內容
14）點擊不
15）問題解決後關閉報警通知
16）儀表盤恢復正常
17）再查看圖形，以已下降到警戒線之下，恢復正常，主從已連接
