relabel_configs: - source_labels: [__address__] target_label: __param_target - source_labels: [__param_target] target_label: instance - target_label: __address__ replacement: blackbox_exporter:9115什么意思

这段代码涉及到了标签重定向的配置。

具体来说：
- 将所有含有 `__address__` 标签的项目重新标记为 `__param_target` 。
- 将所有含有 `__param_target` 标签的项目重新标记为 `instance` 。
- 将所有 `__address__` 标签替换为 `blackbox_exporter:9115`。

相关问题

oracledb_exporter连接信息怎么配置

要配置oracledb_exporter连接信息，您需要在orledb_exporter的配置文件中指定以下参数：

1. `data_source_name`：这是连接数据库的字符串，格式为`username/password@hostname:port/service_name`。

2. `query：这是要执行的SQL查询语句。

以下是一个示例配置文件：

global:
  scrape_interval: 1m

scrape_configs:
  - job_name: 'oracle'
    scrape_interval: 1m
    metrics_path: /metrics
    static_configs:
      - targets: ['localhost:9161']
    params:
      module: [prometheus_oracledb_exporter]
    relabel_configs:
      - source_labels: [__address__]
        regex: '(.*):.*'
        target_label: __param_instance
        replacement: '${1}:1521/orclpdb1'
        action: replace
      - source_labels: [__param_instance]
        regex: '(.*)'
        target_label: instance
        replacement: '${1}'
        action: replace
      - source_labels: []
        regex: '.*'
        target_label: __address__
        replacement: 'localhost:9161'
        action: replace

    oracle:
      data_source_name: 'system/[password]@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=orclpdb1)))'
      query: |
        SELECT owner, table_name, column_name, data_type
        FROM all_tab_columns
        WHERE owner NOT IN ('SYS', 'SYSTEM')
        ORDER BY owner, table_name, column_name

请注意，您需要将`data_source_name`和`query`参数替换为您的数据库连接信息和查询语句。

给我一个blackbox_exporter的监控示例

blackbox_exporter 是一个 Prometheus 监控工具，专门用于对黑盒系统进行监控。以下是一个使用 blackbox_exporter 监控 HTTP 服务的示例：

1. 安装 blackbox_exporter：

$ wget https://github.com/prometheus/blackbox_exporter/releases/download/v0.18.0/blackbox_exporter-0.18.0.linux-amd64.tar.gz
$ tar xvfz blackbox_exporter-0.18.0.linux-amd64.tar.gz
$ cd blackbox_exporter-0.18.0.linux-amd64
$ sudo mv blackbox_exporter /usr/local/bin/

2. 配置 blackbox_exporter：

创建一个配置文件，例如 `blackbox.yml`：

modules:
  http_2xx:
    prober: http
    timeout: 5s
    http:
      valid_http_versions: ["HTTP/1.1", "HTTP/2"]
      method: GET
      no_follow_redirects: false
      fail_if_ssl: false

scrape_configs:
  - job_name: http
    metrics_path: /probe
    params:
      module: [http_2xx]
    static_configs:
      - targets:
        - http://www.example.com
        - https://www.example.com
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: localhost:9115

3. 启动 blackbox_exporter：

$ blackbox_exporter --config.file=blackbox.yml

4. 配置 Prometheus：

在 Prometheus 的配置文件中添加如下内容：

scrape_configs:
  - job_name: blackbox
    metrics_path: /probe
    params:
      module: [http_2xx]
    static_configs:
      - targets:
        - http://localhost:9115
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_module]
        target_label: __metrics_path__
        replacement: /probe

这样，Prometheus 就可以定期从 blackbox_exporter 获取监控