chromedriver/chromedriver.exe")(我使用的Chrome驱 动, PhantomJS也可以) (ps:初期学习爬虫的拾遗与总结这里有介绍) 目标网站:Quotes to Scrape
metrics: [unable to fully scrape metrics from node k8s-node2: unable to fetch metrics from node k8s-node2 cannot validate certificate for 42.51.80.225 because it doesn't contain any IP SANs, unable to fully scrape cannot validate certificate for 42.51.80.221 because it doesn't contain any IP SANs, unable to fully scrape cannot validate certificate for 42.51.80.223 because it doesn't contain any IP SANs, unable to fully scrape metrics: [unable to fully scrape metrics from node k8s-node1: unable to fetch metrics from node k8s-node1
本文将深入探讨如何构建一个高可用、可扩展的企业级电商数据采集系统,结合云原生技术栈和Pangolin Scrape API,为企业提供稳定可靠的数据服务。 合规性和安全性要求数据采集需要符合各国法律法规企业级安全审计和访问控制数据传输和存储的加密要求Pangolin Scrape API的企业级价值作为专业的电商数据采集服务,Pangolin在企业级应用中展现出显著优势 self_built_costs, 'pangolin': pangolin_costs } } 业务价值总结企业级收益分析通过实施基于Pangolin Scrape
代码解释"""配置文件"""classConfig:#API配置API_KEY="your_api_key_here"API_BASE_URL="https://api.pangolinfo.com/scrape
format='%(asctime)s - %(levelname)s: %(message)s') # 列表页 INDEX_URL = 'https://dynamic1.scrape.cuiqingcai.com limit={limit}&offset={offset}' # 详情页 DETAIL_URL = 'https://dynamic1.scrape.cuiqingcai.com/api/movie/{ LIMIT = 10 TOTAL_PAGE = 10 RESULTS_DIR = 'results' exists(RESULTS_DIR) or makedirs(RESULTS_DIR) def scrape_api (page): url = INDEX_URL.format(limit=LIMIT, offset=LIMIT * (page - 1)) return scrape_api(url) # 详情页的url def scrape_detail(id): url = DETAIL_URL.format(id=id) return scrape_api(url) #
# scrape_timeout is set to the global default (10s). configuration containing exactly one endpoint to scrape: # Here it's Prometheus itself. scrape_configs - job_name: 'ssli-prometheus' # scrape_interval: 20s scrape_interval: 5s # metrics_path 如果remote write配置了queue_config,且batch_send_deadline配置的时间比job级的scrape_interval小,那么每隔scrape_interval,remote 发送的多条监控数据,同样每条数据之间的时间戳相差scrape_interval秒。
0x01 配置文件解读 首先直接上官方的配置文件: # A scrape configuration for running Prometheus on a Kubernetes cluster. # This uses separate scrape configs for cluster components (i.e. # via the following annotations: # # * `prometheus.io/scrape`: Only scrape services that have a value following annotations: # # * `prometheus.io/scrape`: Only scrape pods that have a value of `true` # * 0x07 kubernetes-service-endpoints 对于服务的终端节点,也需要加注解: prometheus.io/scrape,为true则会将pod作为监控目标。
跨服务联邦: In cross-service federation, a Prometheus server of one service is configured to scrape selected : 15s # Set the scrape interval to every 15 seconds. /mysqld.json'] 节点2,搜集的是pgsql的信息 cat prometheus2.yml global: scrape_interval: 15s # Set the scrape scrape interval to every 15 seconds. : 15s # Set the scrape interval to every 15 seconds.
简介# https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/additional-scrape-config.md --dry-run -oyaml > additional-scrape-configs.yaml [root@k8s-node1 demo]# kubectl apply -f additional-scrape-configs.yaml -n monitoring secret/additional-scrape-configs created 修改 prometheus 资源 prometheus-prometheus.yaml , --from-file=prometheus-additional.yaml --dry-run -oyaml > additional-scrape-configs.yaml W0427 15:15 [root@k8s-node1 demo]# kubectl apply -f additional-scrape-configs.yaml -n monitoring secret/additional-scrape-configs
rule_files 指定加载规则的位置 3. scrape_configs 配置prometheus监视的数据。 如果该度量标准具有值,1则目标的scrape成功,如果0失败。这可以帮助您指示目标的状态。 Kubernetes容器管理系统中,通常会搭配Prometheus进行监控。 uses separate scrape configs for cluster components (i.e. # via the following annotations: # # * `prometheus.io/scrape`: Only scrape services that have a value following annotations: # # * `prometheus.io/scrape`: Only scrape pods that have a value of `true` # *
“ ” 之前做了个爬虫案例平台,https://scrape.center/,具体文章在 原创丨发布一个爬虫案例平台,帮助爬虫初学者进行练手。 比如这个网站:https://ssr1.scrape.center/,当访问频率高的时候,甚至我后端开了 20 个 Pod 也承受不来,大家并发量有点猛啊。 /backend image: 'scrape-ssr1-backend' ports: - '8000:8000' environment: ... secretName: tls-wildcard-scrape-center rules: - host: ssr1.scrape.center http: 简单测速结果 网址在这:https://ssr1.scrape.center/,大家可以来爬爬试试吧。 作者:崔庆才 排版:崔庆才
背景很多应用会为 Pod 或 Service 打上一些注解用于 Prometheus 的服务发现,如 prometheus.io/scrape: "true",这种注解并不是 Prometheus 官方支持的 除此之外,控制面组件 istiod 的 Pod 也会有类似注解: prometheus.io/port: "15014" prometheus.io/scrape: "true"Kubernetes only pods that have # `prometheus.io/scrape: "true"` annotation - source_labels: - __meta_kubernetes_pod_annotation_prometheus_io_scrape action: keep only endpoints that have # `prometheus.io/scrape: "true"` annotation
书上案例 《Python3 网络爬虫开发实战》(第二版)作者崔庆才搭建的平台Scrape Center。对爬虫感兴趣的可以看一看。 我们进入第一个案例Scrape | Movie。 下面需要翻页,继续爬取下一页: 我们可以发现每一页的规律是https://ssr1.scrape.center/page/页码 只有最后的页码不一样。 def scrape_detail(url): return scrape_page(url) 并且在main函数中调用爬取详情: def main(): for page in range (page): index_url = f'{BASE_URL}/page/{page}' return scrape_page(index_url) def scrape_detail start={25 * page}' return scrape_page(index_url) def scrape_detail(url): return scrape_page
: 15s # Set the scrape interval to every 15 seconds. configuration containing exactly one endpoint to scrape: # Here it's Prometheus itself. scrape_configs [ scrape_timeout: <duration> | default = 10s ] # 评估规则的频率. rule_files: [ - <filepath_glob> ... ] # 刮擦的配置列表. scrape_configs: [ - <scrape_config> ... ] # 报警指定与 : <duration> | default = <global_config.scrape_interval> ] # 每次执行这个job进行刮取的超时时间. [ scrape_timeout: <
# scrape_timeout is set to the global default (10s). configuration containing exactly one endpoint to scrape: # Here it's Prometheus itself. scrape_configs - job_name: 'ssli-prometheus' # scrape_interval: 20s scrape_interval: 5s # metrics_path 如果remote write配置了queue_config,且batch_send_deadline配置的时间比job级的scrape_interval小,那么每隔scrape_interval,remote 发送的多条监控数据,同样每条数据之间的时间戳相差scrape_interval秒。
新建一个文件scrape-data.txt,内容见gist,这个文件里定义了每次Prometheus抓指标的时候所能抓到的值,这个工具会依次提供这些指标(当然你也可以写自己的假数据)。 运行: docker run -d --rm \ --name=mock-metrics \ -v $(pwd)/scrape-data.txt:/home/java-app/etc/scrape-data.txt 启动Prometheus 新建配置文件: scrape_configs: - job_name: 'mock' scrape_interval: 15s static_configs : - targets: - '<docker-host-machine-ip>:8080' 注意:Data point的间隔通过scrape_interval参数控制。
prometheus配置文件如下 global: scrape_interval: 60s evaluation_interval: 15s scrape_configs: - job_name: 'ssli-prometheus' scrape_interval: 3s metric_relabel_configs: - action: drop 当然,通过配置keep action可以保留匹配的指标数据,使用以下配置文件可以实现仅收集go_info和go_gc_duration_seconds指标数据: global: scrape_interval : 60s evaluation_interval: 15s scrape_configs: - job_name: 'ssli-prometheus' scrape_interval
limit=18&offset= {offset} ' DETAIL_URL = 'https://dynamic5.scrape.cuiqingcai.com/api/book/ {id} ' data = await self .scrape_api(url) await self .save_data(data) async def save_data ( = [asyncio.ensure_future( self .scrape_index(page)) for page in range ( 1 , PAGE_NUMBER + 1 )] results = await asyncio.gather(*scrape_index_tasks) # detail tasks print ( 'results = [asyncio.ensure_future( self .scrape_detail( id )) for id in ids] await asyncio.wait(scrape_detail_tasks
pymongo.MongoClient(MONGO_CONNECTION_STRING) db = client['movies'] collection = db['movies'] def scrape_page (url): """ scrape page by url and return its html :param url: page url :return: html (page): """ scrape index page and return its html :param page: page of index page :return : html of index page """ index_url = f'{BASE_URL}/page/{page}' return scrape_page(index_url : html of detail page """ return scrape_page(url) def parse_detail(html): """ parse
# my global config global: scrape_interval: 15s # Set the scrape interval to every 15 seconds. # scrape_timeout is set to the global default (10s). configuration containing exactly one endpoint to scrape: # Here it's Prometheus itself. scrape_configs scrape_interval: 用来指定应用程序或服务抓取数据的时间间隔。 evaluation_interval:用来指定Prometheus评估规则的频率。 scrape_config: 指定Prometheus抓取的所有目标。 上面的配置文件只有一个监控目标,即监控 Prometheus 服务器自身。