架構 grafana和prometheus之前安裝配置過,見: "Grafana+Prometheus打造全方位立體監控系統" MySql安裝 MySql的地位和重要性就不言而喻了,作為開源產品深受廣大中小企業以及互聯網企業喜愛,所以這裡我們也有必要對其進行相應的監控。 由於最近更換了CentOS7 ...
架構
grafana和prometheus之前安裝配置過,見:Grafana+Prometheus打造全方位立體監控系統
MySql安裝
MySql的地位和重要性就不言而喻了,作為開源產品深受廣大中小企業以及互聯網企業喜愛,所以這裡我們也有必要對其進行相應的監控。
由於最近更換了CentOS7,這裡對MySql重新安裝一遍,順便做個記錄,CentOS7的yum源中預設好像是沒有mysql的。為瞭解決這個問題,我們要先下載mysql的repo源。
列出所有版本信息:
lsb_release -a
下載mysql的repo源:
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
安裝mysql-community-release-el7-5.noarch.rpm包:
rpm -ivh mysql-community-release-el7-5.noarch.rpm
安裝mysql:
yum install mysql-server -y
修改許可權,否則會報錯:
chown -R root:root /var/lib/mysql
重啟mysql服務:
service mysqld restart
登錄並重置密碼:
## 直接回車進入mysql控制台
mysql -u root
mysql > use mysql;
mysql > update user set password=password('123456') where user='root';
mysql > exit;
mysqld_exporter安裝
下載並解壓:
https://github.com/prometheus/mysqld_exporter/releases/download/v0.10.0/mysqld_exporter-0.10.0.linux-amd64.tar.gz
tar -xvf mysqld_exporter-0.10.0.linux-amd64.tar.gz
mysqld_exporter需要連接Mysql,首先為它創建用戶並賦予所需的許可權:
GRANT REPLICATION CLIENT, PROCESS ON *.* TO 'exporter'@'localhost' identified by '123456';
GRANT SELECT ON performance_schema.* TO 'exporter'@'localhost';
flush privileges;
創建.my.cnf文件 vi .my.cnf:
[client]
user=exporter
password=123456
運行mysqld_exporter:
./mysqld_exporter -config.my-cnf=".my.cnf" &
Prometheus配置
修改prometheus.yml加入MySql節點:
global:
scrape_interval: 15s
evaluation_interval: 15s
scrape_configs:
- job_name: prometheus
static_configs:
- targets: ['localhost:9090']
labels:
instance: prometheus
- job_name: linux1
static_configs:
- targets: ['192.168.1.120:9100']
labels:
instance: sys1
- job_name: linux2
static_configs:
- targets: ['192.168.1.130:9100']
labels:
instance: sys2
- job_name: redis1
static_configs:
- targets: ['192.168.1.120:9121']
labels:
instance: redis1
- job_name: mysql
static_configs:
- targets: ['192.168.1.120:9104']
labels:
instance: db1
保存以後重啟Prometheus,查看targets:
最後登錄grafana查看MySql監控信息:
參考文檔:
https://github.com/prometheus/mysqld_exporter