ceph dashboard

启用 Dashboard

安装软件包
```
yum install -y ceph-mgr-dashboard
```
启用 dashboard module
```
ceph mgr module enable dashboard
```

SSL

# 自动生成SSL证书并配置
ceph dashboard create-self-signed-cert
# 手动配置指定SSL证书
ceph dashboard set-ssl-certificate -i dashboard.crt
ceph dashboard set-ssl-certificate-key -i dashboard.key
# 禁用SSL
ceph config set mgr mgr/dashboard/ssl false

放行端口

# 如果配置了SSL,放行8433端口
firewall-cmd --add-port=8433/tcp
firewall-cmd --add-port=8433/tcp --permanent
# 如果禁用了SSL,放行8080端口
firewall-cmd --add-port=8080/tcp
firewall-cmd --add-port=8080/tcp --permanent

创建管理员用户

# ceph dashboard ac-user-create <username> <password> administrator
ceph dashboard ac-user-create admin admin administrator

启用 Grafana 嵌入仪表板

安装 Grafana

安装软件包

wget https://dl.grafana.com/oss/release/grafana-6.7.1-1.x86_64.rpm
yum install grafana-6.7.1-1.x86_64.rpm

启用 ceph grafana 模板

编辑/etc/grafana/provisioning/dashboards/sample.yaml文件

apiVersion: 1

providers:
 - name: 'default'
   orgId: 1
   folder: ''
   folderUid: ''
   type: file
   options:
     path: /etc/grafana/dashboards

允许 Grafana 被嵌套
修改/etc/grafana/grafana.ini文件中allow_embedding值为true
启用匿名模式
修改/etc/grafana/grafana.ini文件中的如下内容
```
[auth.anonymous]
enabled = true
org_name = Main Org.
org_role = Viewer
```

启动并设置开机自启

systemctl restart grafana-server.service
systemctl enable grafana-server.service

放行端口

firewall-cmd --add-port=3000/tcp
firewall-cmd --add-port=3000/tcp --permanent

安装 vonage-status-panel 和 grafana-piechart-panel 插件

grafana-cli plugins install vonage-status-panel
grafana-cli plugins install grafana-piechart-panel
systemctl restart grafana-server.service

安装 node_exporter

安装可执行文件

wget https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz
tar xvf node_exporter-0.18.1.linux-amd64.tar.gz
mv node_exporter-0.18.1.linux-amd64/node_exporter /usr/bin/

配置 systemd 服务

创建/usr/lib/systemd/system/node_exporter.service文件

[Unit]
Description=Node Exporter

[Service]
#User=node_exporter
ExecStart=/usr/bin/node_exporter
Restart=always

[Install]
WantedBy=multi-user.target

启动服务并设置开机自启

systemctl daemon-reload
systemctl restart node_exporter.service
systemctl enable node_exporter.service

放行端口

firewall-cmd --add-port=9100/tcp
firewall-cmd --add-port=9100/tcp --permanent

安装 prometheus

安装可执行文件

# 下载文件
wget https://github.com/prometheus/prometheus/releases/download/v2.17.1/prometheus-2.17.1.linux-amd64.tar.gz
# 解压文件
tar xvf prometheus-2.17.1.linux-amd64.tar.gz
# 移动可执行文件到运行目录
mv prometheus-2.17.1.linux-amd64/prometheus /usr/bin/
mv prometheus-2.17.1.linux-amd64/promtool /usr/bin/
mv prometheus-2.17.1.linux-amd64/tsdb /usr/bin/
# 配置文件
mkdir -p /etc/prometheus/
mv prometheus-2.17.1.linux-amd64/prometheus.yml /etc/prometheus/
mkdir -p /etc/default
tee /etc/default/prometheus << EOF
PROMETHEUS_OPTS='--config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/var/lib/prometheus/data'
EOF
# 其它文件
mkdir -p /usr/share/prometheus/
mv prometheus-2.17.1.linux-amd64/consoles /usr/share/prometheus/
mv prometheus-2.17.1.linux-amd64/console_libraries /usr/share/prometheus/
mkdir -p /var/lib/prometheus

配置 systemd 服务

创建/usr/lib/systemd/system/prometheus.service文件

[Unit]
Description=The Prometheus 2 monitoring system and time series database.
Documentation=https://prometheus.io
After=network.target

[Service]
EnvironmentFile=-/etc/default/prometheus
# User=prometheus
ExecStart=/usr/bin/prometheus \
          --web.console.libraries=/usr/share/prometheus/console_libraries \
          --web.console.templates=/usr/share/prometheus/consoles \
          $PROMETHEUS_OPTS
ExecReload=/bin/kill -HUP $MAINPID
Restart=always
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

启动服务并设置开机自启

systemctl daemon-reload
systemctl restart prometheus.service
systemctl enable prometheus.service

放行端口

firewall-cmd --add-port=9090/tcp
firewall-cmd --add-port=9090/tcp --permanent

配置 ceph

启动 Ceph Exporter
```
ceph mgr module enable prometheus
```

设置 grafana-api-url

ceph dashboard set-grafana-api-url 'http://192.168.200.11:3000'

关闭 ssl 校验

ceph dashboard set-grafana-api-ssl-verify False

配置 prometheus

编辑/etc/prometheus/prometheus.yml

global:
  scrape_interval:     15s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'node'
    file_sd_configs:
      - files:
        - node_targets.yml
  - job_name: 'ceph'
    honor_labels: true
    file_sd_configs:
      - files:
        - ceph_targets.yml

编辑/etc/prometheus/node_targets.yml

[
    {
        "targets": [ "node1:9100" ],
        "labels": {
            "instance": "node1"
        }
    },
    {
        "targets": [ "node2:9100" ],
        "labels": {
            "instance": "node2"
        }
    },
    {
        "targets": [ "node3:9100" ],
        "labels": {
            "instance": "node3"
        }
    }
]

编辑/etc/prometheus/ceph_targets.yml

[
    {
        "targets": [ "node1:9283" ],
        "labels": {}
    }
]

重启 prometheus

systemctl restart prometheus.service

配置 Grafana
登录 Grafana, 创建prometheus data sourc

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