五、Promethus+Grafana监控Ceph(2)
一、安装grafana
1、配置yum源文件
# vim /etc/yum.repos.d/grafana.repo
[grafana]
name=grafana
baseurl=https://mirrors.tuna.tsinghua.edu.cn/grafana/yum/rpm
repo_gpgcheck=0
enabled=1
gpgcheck=0
2.通过yum命令安装grafana
# yum -y install grafana
3.启动grafana并设为开机自启
# systemctl start grafana-server.service
# systemctl enable grafana-server.service
二、安装promethus
1、下载安装包,下载地址
https://prometheus.io/download/
2、解压压缩包
# tar fvxz prometheus-2.14.0.linux-amd64.tar.gz
3、将解压后的目录改名
# mv prometheus-2.13.1.linux-amd64 /opt/prometheus
4、查看promethus版本
# ./prometheus --version
5、配置系统服务启动
# vim /etc/systemd/system/prometheus.service
[Unit]
Description=Prometheus Monitoring System
Documentation=Prometheus Monitoring System
[Service]
ExecStart=/opt/prometheus/prometheus \
--config.file /opt/prometheus/prometheus.yml \
--web.listen-address=:9090
[Install]
WantedBy=multi-user.target
6、加载系统服务
# systemctl daemon-reload
7、启动服务和添加开机自启动
# systemctl start prometheus
# systemctl enable prometheus
三、ceph mgr prometheus插件配置(回到cephnode01设置)
# ceph mgr module enable prometheus ##开启后就会吐ceph相关数据,然后prometheus去收集,grafana展示;
# ceph mgr module ls | more 查看是否开启模块
# netstat -nltp | grep mgr 检查端口
# curl 127.0.0.1:9283/metrics 测试返回值
四、配置promethus
1、在 scrape_configs: 配置项下添加
vim prometheus.yml
- job_name: 'ceph_cluster'
honor_labels: true
scrape_interval: 5s
static_configs:
- targets: ['192.168.171.135:9283']
labels:
instance: ceph
# systemctl restart prometheus
# 浏览器-》 http://x.x.x.x:9090 -》status -》Targets
五、配置grafana
1、浏览器登录 grafana 管理界面
2、添加data sources,点击configuration--》data sources
3、添加dashboard,点击HOME--》find dashboard on grafana.com
4、搜索ceph的dashboard (编号:2842)
5、点击HOME--》Import dashboard, 选择合适的dashboard,记录编号
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