Prometheus-2:blackbox_exporter黑盒监控
黑盒监控blackbox_exporter
部署及使用blackbox_exporter
部署blackbox_exporter
- 下载安装包
curl -LO https://github.com/prometheus/blackbox_exporter/releases/download/v0.22.0/blackbox_exporter-0.22.0.linux-amd64.tar.gz
- 展开程序包:
tar xf blackbox_exporter-0.22.0.linux-amd64.tar.gz -C /usr/local/
ln -sv /usr/local/blackbox_exporter-0.22.0.linux-amd64 /usr/local/blackbox_exporter
- 创建用户,或prometheus用户已经存在,可略过该步骤:
useradd -r prometheus
- 创建Systemd Unitfile,保存于/usr/lib/systemd/system/blackbox_exporter.service文件中:
[Unit]
Description=blackbox_exporter
After=network.target [Service]
Type=simple
User=root
Group=root
ExecStart=/usr/local/blackbox_exporter/blackbox_exporter \
--config.file=/usr/local/blackbox_exporter/blackbox.yml \
--web.listen-address=:9115
Restart=on-failure [Install]
WantedBy=multi-user.target
- 启动服务:
systemctl daemon-reload
systemctl start blackbox_exporter.service
systemctl enable blackbox_exporter.service
- 验证监听的端口,并测试访问其暴露的指标
ss -tnlp | grep '9115'
curl localhost:9115/metrics
icmp监控,监控主机存活状态
- job_name: "icmp_ping"
metrics_path: /probe
params:
module: [icmp] # 使用icmp模块
file_sd_configs:
- refresh_interval: 10s #检测时间间隔
files:
- "ping/ping_status*.yml" #具体的配置文件路径
relabel_configs:
- source_labels: [__address__]
regex: (.*)(:80)?
target_label: __param_target
replacement: ${1}
- source_labels: [__param_target]
target_label: instance
- source_labels: [__param_target]
regex: (.*)
target_label: ping
replacement: ${1}
- source_labels: []
regex: .*
target_label: __address__
replacement: 127.0.0.1:9115
这里有很多relabel的操作,下篇博客会详细讲解
cd /usr/local/prometheus/
mkdir ping
cd ping
- targets: ['monitor.example.com']
labels:
group: '跳板机'
- targets: ['10.xx.xx.xx','10.xx.xx.xx','10.xx.xx.xx']
labels:
group: 'k8s cluster'
- targets: ['www.baidu.com']
labels:
group: '百度'
./promtool check config prometheus.yml
curl -XPOST monitor.example.com:9090/-/reload

http监控
# Blackbox Exporter
- job_name: 'http_get_status'
metrics_path: /probe
params:
module: [http_2xx] # Look for a HTTP 200 response.
file_sd_configs:
- refresh_interval: 2m
files:
- "httpget/http_get*.yml" #具体的配置文件
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: "monitor.example.com:9115" # 指向实际的Blackbox exporter.
- target_label: region
replacement: "local"
static_configs:
- targets:
- "https://monitor.example.com"
- "http://monitor.example.com:8080"
- "www.google.com"
refresh_interval: 2m
curl -XPOST monitor.example.com:9090/-/reload


tcp端口监控
- job_name: 'tcp_port_status'
metrics_path: /probe
params:
module: [tcp_connect]
static_configs:
- targets: ['monitor.example.com:80','monitor.example.com:8080','monitor.example.com:443']
labels:
instance: 'port_status'
group: 'tcp'
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: monitor.example.com:9115

自定义blackbox.yml
# github地址
https://github.com/prometheus/blackbox_exporter # github中blackbox.yml各配置项解析
blackbox_exporter/CONFIGURATION.md at master · prometheus/blackbox_exporter · GitHub # github中example文件
blackbox_exporter/example.yml at master · prometheus/blackbox_exporter · GitHub
modules:
http_2xx:
prober: http
http:
preferred_ip_protocol: "ip4"
valid_http_versions: ["HTTP/1.1", "HTTP/2"]
valid_status_codes: [200,301,302,303]
tls_config:
insecure_skip_verify: true
http_ca_example:
prober: http
http:
method: GET
preferred_ip_protocol: "ip4"
valid_http_versions: ["HTTP/1.1", "HTTP/2"]
fail_if_ssl: false
fail_if_not_ssl: true
tls_config:
insecure_skip_verify: false
ca_file: /usr/local/blackbox_exporter/certs/ca.crt
cert_file: /usr/local/blackbox_exporter/certs/server.crt
key_file: /usr/local/blackbox_exporter/certs/server.key
systemctl restart blackbox_exporter.service
- job_name: 'http_get_status'
metrics_path: /probe
params:
module: [http_2xx] # Look for a HTTP 200 response.
file_sd_configs:
- refresh_interval: 2m
files:
- "httpget/http_get*.yml" #具体的配置文件
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: "monitor.example.com:9115" # 指向实际的Blackbox exporter.
- target_label: region
replacement: "local" - job_name: 'http_get_ca_status'
metrics_path: /probe
params:
module: [http_ca_example]
file_sd_configs:
- refresh_interval: 2m
files:
- "httpget/http_ca.yml"
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: "monitor.example.com:9115" # 指向实际的Blackbox exporter.
- target_label: region
replacement: "beijing"
curl -XPOST monitor.example.com:9090/-/reload
probe_http_duration_seconds{phase="tls"}


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