prometheus监控耗时MySQL_使用prometheus+grafana监控MySQL监控Oracle

加载mysqld_exporter

cd prometheus_exporter/mysqld_exporter-0.12.1.linux-amd64

创建MySQL数据库监控用户：

create user mysql_monitor@'%' identified by 'Mysql_monitor123';

GRANT REPLICATION CLIENT, PROCESS ON *.* TO mysql_monitor@'%';

GRANT SELECT ON performance_schema.* TO mysql_monitor@'%';

vim .my.cnf

[client]

host=localhost

port=3306

user=mysql_monitor

password=Mysql_monitor123

后台运行服务

nohup ./mysqld_exporter --config.my-cnf=.my.cnf &

加载oracle_exporter

下载oracle客户端安装包,配置安装，需要19C

https://www.oracle.com/cn/database/technologies/instant-client/linux-x86-64-downloads.html

这里使用root用安装19C的客户端

rpm -ivh oracle-instantclient19.5-basic-19.5.0.0.0-1.x86_64.rpm

[root@oracle21 prometheus_exporter]# rpm -ivh oracle-instantclient19.5-basic-19.5.0.0.0-1.x86_64.rpm

Preparing...                          ################################# [100%]

Updating / installing...

1:oracle-instantclient19.5-basic-19################################# [100%]

[root@oracle21 prometheus_exporter]# cd /usr/lib/oracle/19.3/client64/network/admin

-bash: cd: /usr/lib/oracle/19.3/client64/network/admin: No such file or directory

[root@oracle21 prometheus_exporter]# cd /usr/lib/oracle/19.5/client64/

[root@oracle21 client64]# ls -trl

total 4

drwxr-xr-x 2 root root   33 Aug 13 09:54 bin

drwxr-xr-x 3 root root 4096 Aug 13 09:54 lib

[root@oracle21 client64]# mkdir -p network/admin/

[root@oracle21 client64]# cd network/admin/

[root@oracle21 admin]#  cat  >tnsnames.ora

oratest =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.0.0.166)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = oratest)

)

)

[root@oracle21 admin]#

配置环境变量 vim ~/.bash_profile --根目录下为全局使用，为限制用户权限，可只修改某一用户的环境变量

vim ~/.bash_profile

export ORACLE_HOME=/usr/lib/oracle/19.5/client64

export TNS_ADMIN=$ORACLE_HOME/network/admin

export NLS_LANG='simplified chinese_china'.ZHS16GBK

export LD_LIBRARY_PATH=$ORACLE_HOME/lib

export PATH=$ORACLE_HOME/bin:$PATH

source ~/.bash_profile

Oracle数据库创建用户

create user oracle_monitor identified by Oracle_monitor123;

grant connect,dba,select any table to oracle_monitor;

[root@oracle21 prometheus_exporter]# cd oracledb_exporter.0.2.9-ora18.5.linux-amd64/

[root@oracle21 oracledb_exporter.0.2.9-ora18.5.linux-amd64]# pwd

/home/prometheus/prometheus_exporter/oracledb_exporter.0.2.9-ora18.5.linux-amd64

[root@oracle21 oracledb_exporter.0.2.9-ora18.5.linux-amd64]# export DATA_SOURCE_NAME=oracle_monitor/Oracle_monitor123@oratest

[root@oracle21 oracledb_exporter.0.2.9-ora18.5.linux-amd64]# nohup ./oracledb_exporter &

[1] 2623

[root@oracle21 oracledb_exporter.0.2.9-ora18.5.linux-amd64]# nohup: ignoring input and appending output to ‘nohup.out’

[root@oracle21 oracledb_exporter.0.2.9-ora18.5.linux-amd64]# ps -ef |grep oracledb_exporter

root      2623 32023  0 10:01 pts/0    00:00:00 ./oracledb_exporter

root      2669 32023  0 10:01 pts/0    00:00:00 grep --color=auto oracledb_exporter

[root@oracle21 oracledb_exporter.0.2.9-ora18.5.linux-amd64]#

以上使用命令查看采集数据是否正常(修改对应的IP跟端口)：

curl http://IP:9161/metrics

5，启动服务

查看配置文件：

cat  prometheus.yml

static_configs:

- targets: ['localhost:9090']

- job_name: linux

static_configs:

- targets: ['10.0.0.166:9100']

labels:

instance: linux_10.0.0.166

- job_name: mysql

static_configs:

- targets: ['10.0.0.166:9104']

labels:

instance: mysql_10.0.0.166

- job_name: oracle_local

static_configs:

- targets: ['10.0.0.166:9161']

labels:

instance: oracle_10.0.0.166

直接运行脚本启动服务：

[root@oracle21 prometheus]# sh start_prometheus.sh

##########################################

Prometheus is running

##########################################

[root@oracle21 prometheus]#

查看网址是否监控正常：

http://10.0.0.166:9090/targets

5，安装grafana

这里使用RPM安装

wget https://dl.grafana.com/oss/release/grafana-7.1.3-1.x86_64.rpm

yum install grafana-7.1.3-1.x86_64.rpm

$ systemctl daemon-reload

$ systemctl start grafana-server

$ systemctl status grafana-server

访问网址是否正常

http://10.0.0.166:3000 用户密码为admin  admin

6，导入对应的仪表盘效果如下

主机：

MySQL：

Oracle：

7，遇到的问题

使用之前查看的批量导入MySQL仪表盘显示需要安装插件，该插件本身自带，解决办法直接下载最新的仪表盘导入即可；

Oracle数据库采集数据异常，查看为查询表空间耗时很久，在数据库层面清理回收站即可；

Linux6安装监控异常，为需要安装Linux需要支持2.14 strings /lib64/libc.so.6 |grep GLIBC_ linux6需要升级

注意新的版本一定得用其他目录，防止覆盖原版本导致系统异常：

mkdir -p /root/soft/glibc

gunzip glibc-2.14.tar.gz

tar -xvf glibc-2.14.tar

cd glibc-2.14

mkdir build

cd build

../configure --prefix=/root/soft/glibc

make -j4

make install

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/root/soft/glibc/lib