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9.5 KiB
9.5 KiB
如何优雅的使用Consul管理站点监控
实现功能
- 基于Prometheus + Blackbox_Exporter实现站点与接口监控。
- 基于Consul实现Prometheus监控目标的自动发现。
- Blackbox Manager:基于Flask + Vue实现的Web管理平台维护监控目标。
- 实现了一个脚本可批量导入监控目标到Consul。
- 更新了一个Blackbox Exporter的Grafana展示看板。
v0.1.2更新
- 所有字段增加了排序功能
- 新增筛选功能:可以根据名称或实例来进行关键字筛选
- 新增清空查询条件按钮
- 简化了web界面新增操作:
- 选择选项查询后,点击新增或自动填写好选择的选项
- 增加确认并新增按钮,可以自动填上之前填写的前4个字段
- 新增批量删除功能
- 新增分页功能
docker-compose pull && docker-compose up -d
截图
Blackbox Manager Web管理界面
Blackbox Exporter Dashboard 截图
部署说明
部署Consul
安装
# 使用yum部署consul
yum install -y yum-utils
yum-config-manager --add-repo https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo
yum -y install consul
# 或者直接下RPM包安装
wget https://rpm.releases.hashicorp.com/RHEL/7/x86_64/stable/consul-1.11.1-1.x86_64.rpm
rpm -ivh ./consul-1.11.1-1.x86_64.rpm
配置
vi /etc/consul.d/consul.hcl
data_dir = "/opt/consul"
client_addr = "0.0.0.0"
ui_config{
enabled = true
}
server = true
bootstrap = true
acl = {
enabled = true
default_policy = "deny"
enable_token_persistence = true
}
启动与鉴权配置
systemctl enable consul.service
systemctl start consul.service
# 获取登录密码
consul acl bootstrap
# 记录 SecretID
部署Blackbox Manager
使用docker-compose来部署
编辑docker-compose.yaml文件,修改传入的3个环境变量:
-
consul的
token
,consul的URL
(/v1要保留),登录Blackbox Manager的密码
-
启动:
docker-compose up -d
-
登录:
http://{IP}:1026
Consul字段设计说明
- 所有数据存在一个Services项中,每个监控目标为一个Service。
- 每个Service存一个Tag:目标属于Prometheus的JOB名称。
- 每个Service使用Meta的kv存监控目标的明细:
module
,company
,project
,env
,name
,instance
- 分别表示:JOB名称,公司部门,项目,环境,名称,实例url
- 前5个字段合并即为consul的serviceID,作为唯一监控项标识
Web使用说明
- 通过Web界面来对Consul数据增删改查,从而实现对监控目标的管理。
- Web界面可以方便对监控目标分组、分类,方便查询维护。
配置Prometheus
基于Consul实现Prometheus的自动发现功能配置
- 根据Consul每个service的tag来把监控目标关联到Prometheus的JOB。
- 把Consul每个service的Meta的KV关联到Prometheus每个指标的标签。
- 根据标签来对监控目标分类,分组,方便管理维护。
建议同一个job的job_name
,module
,tags
使用同一命名。
vi prometheus.yml
#####blackbox_exporter#####
- job_name: 'http_2xx'
metrics_path: /probe
params:
module: [http_2xx]
consul_sd_configs:
- server: 'x.x.x.x:8500'
token: 'xxx-xxx-xxx-xxx'
services: ['blackbox_exporter']
tags: ['http_2xx']
relabel_configs:
- source_labels: ["__meta_consul_service_metadata_instance"]
target_label: __param_target
- source_labels: ["__meta_consul_service_metadata_company"]
target_label: company
- source_labels: ["__meta_consul_service_metadata_env"]
target_label: env
- source_labels: ["__meta_consul_service_metadata_name"]
target_label: name
- source_labels: ["__meta_consul_service_metadata_project"]
target_label: project
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 127.0.0.1:9115
- job_name: 'tcp_connect'
metrics_path: /probe
params:
module: [tcp_connect]
consul_sd_configs:
- server: 'x.x.x.x:8500'
token: 'xxx-xxx-xxx-xxx'
services: ['blackbox_exporter']
tags: ['tcp_connect']
relabel_configs:
- source_labels: ["__meta_consul_service_metadata_instance"]
target_label: __param_target
- source_labels: ["__meta_consul_service_metadata_company"]
target_label: company
- source_labels: ["__meta_consul_service_metadata_env"]
target_label: env
- source_labels: ["__meta_consul_service_metadata_name"]
target_label: name
- source_labels: ["__meta_consul_service_metadata_project"]
target_label: project
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 127.0.0.1:9115
- job_name: 'http200igssl'
metrics_path: /probe
params:
module: [http200igssl]
consul_sd_configs:
- server: 'x.x.x.x:8500'
token: 'xxx-xxx-xxx-xxx'
services: ['blackbox_exporter']
tags: ['http200igssl']
relabel_configs:
- source_labels: ["__meta_consul_service_metadata_instance"]
target_label: __param_target
- source_labels: ["__meta_consul_service_metadata_company"]
target_label: company
- source_labels: ["__meta_consul_service_metadata_env"]
target_label: env
- source_labels: ["__meta_consul_service_metadata_name"]
target_label: name
- source_labels: ["__meta_consul_service_metadata_project"]
target_label: project
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 127.0.0.1:9115
- job_name: 'http4xx'
metrics_path: /probe
params:
module: [http4xx]
consul_sd_configs:
- server: 'x.x.x.x:8500'
token: 'xxx-xxx-xxx-xxx'
services: ['blackbox_exporter']
tags: ['http4xx']
relabel_configs:
- source_labels: ["__meta_consul_service_metadata_instance"]
target_label: __param_target
- source_labels: ["__meta_consul_service_metadata_company"]
target_label: company
- source_labels: ["__meta_consul_service_metadata_env"]
target_label: env
- source_labels: ["__meta_consul_service_metadata_name"]
target_label: name
- source_labels: ["__meta_consul_service_metadata_project"]
target_label: project
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 127.0.0.1:9115
配置Blackbox_Exporter
主要是默认的配置,增加了4xx和忽略ssl的模块。
cat blackbox.yml
modules:
http_2xx:
prober: http
http:
valid_status_codes:
- 200
- 301
- 302
- 303
no_follow_redirects: true
http_post_2xx:
prober: http
http:
method: POST
tcp_connect:
prober: tcp
ssh_banner:
prober: tcp
tcp:
query_response:
- expect: "^SSH-2.0-"
- send: "SSH-2.0-blackbox-ssh-check"
icmp:
prober: icmp
http4xx:
prober: http
http:
valid_status_codes:
- 401
- 403
- 404
http200igssl:
prober: http
http:
valid_status_codes:
- 200
tls_config:
insecure_skip_verify: true
批量导入脚本
在文本文件中写入监控目标的信息:JOB名称,公司/部门,项目,环境,名称,实例url,每行一个,空格分隔。
执行导入脚本,即可导入所有监控目标到Consul,并符合Prometheus的自动发现配置。
修改脚本中的consul_token和consul_url,即可导入。
#!/usr/bin/python3
import requests,json
consul_token = 'xxxxxxxxxx'
consul_url = 'http://x.x.x.x:8500/v1'
with open('instance.list', 'r') as file:
lines = file.readlines()
for line in lines:
module,company,project,env,name,instance = line.split()
headers = {'X-Consul-Token': consul_token}
data = {"id": f"{module}/{company}/{project}/{env}@{name}",
"name": 'blackbox_exporter',
"tags": [module],
"Meta": {'module':module,'company':company,'project':project,'env':env,'name':name,'instance':instance}
}
reg = requests.put(f"{consul_url}/agent/service/register", headers=headers, data=json.dumps(data))
if reg.status_code == 200:
print({"code": 20000,"data": "增加成功!"})
else:
print({"code": 50000,"data": f'{reg.status_code}:{reg.text}'})
导入Blackbox Exporter Dashboard
- 支持Grafana 8,基于blackbox_exporter 0.19.0设计
- 采用图表+曲线图方式展示TCP,ICMP,HTTPS的服务状态,各阶段请求延时,HTTPS证书信息等
- 优化展示效果,支持监控目标的分组、分类级联展示,多服务同时对比展示。
导入ID:9965
详细URL:https://grafana.com/grafana/dashboards/9965
GitHub
所有代码都在里面,抛砖引玉。
https://github.com/starsliao/Prometheus/tree/master/Blackbox-Manager