Scrapyd 部署

2022-05-14 07:28:01

scrapy爬虫写好后，需要用命令行运行，如果能在网页上操作就比较方便。scrapyd部署就是为了解决这个问题，能够在网页端查看正在执行的任务，也能新建爬虫任务，和终止爬虫任务，功能比较强大。

一、安装

1，安装scrapyd

pip install scrapyd

2，安装 scrapyd-deploy

pip install scrapyd-client

windows系统，在c:\python27\Scripts下生成的是scrapyd-deploy，无法直接在命令行里运行scrapd-deploy。
解决办法：
在c:\python27\Scripts下新建一个scrapyd-deploy.bat，文件内容如下：

@echo off
C:\Python27\python C:\Python27\Scripts\scrapyd-deploy %*

添加环境变量：C:\Python27\Scripts;

二、使用

1，运行scrapyd

首先切换命令行路径到Scrapy项目的根目录下，
要执行以下的命令，需要先在命令行里执行scrapyd，将scrapyd运行起来

MacBook-Pro:~ usera$ scrapyd

/usr/local/bin/scrapyd:5: UserWarning: Module _markerlib was already imported from /Library/Python/2.7/site-packages/distribute-0.6.49-py2.7.egg/_markerlib/__init__.pyc, but /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python is being added to sys.path
  from pkg_resources import load_entry_point
2016-09-24 16:00:21+0800 [-] Log opened.
2016-09-24 16:00:21+0800 [-] twistd 15.5.0 (/usr/bin/python 2.7.10) starting up.
2016-09-24 16:00:21+0800 [-] reactor class: twisted.internet.selectreactor.SelectReactor.
2016-09-24 16:00:21+0800 [-] Site starting on 6800
2016-09-24 16:00:21+0800 [-] Starting factory <twisted.web.server.Site instance at 0x102a21518>
2016-09-24 16:00:21+0800 [Launcher] Scrapyd 1.1.0 started: max_proc=16, runner='scrapyd.runner'

2，发布工程到scrapyd

a，配置scrapy.cfg

在scrapy.cfg中，取消#url = http://localhost:6800/前面的“#”，具体如下：,
然后在命令行中切换命令至scrapy工程根目录，运行命令：

scrapyd-deploy <target> -p <project>

示例：

scrapd-deploy -p MySpider

验证是否发布成功

scrapyd-deploy -l

output:
TS                   http://localhost:6800/

一，开始使用

1，先启动 scrapyd，在命令行中执行：

MyMacBook-Pro:MySpiderProject user$ scrapyd

2，创建爬虫任务

curl http://localhost:6800/schedule.json -d project=myproject -d spider=spider2

bug：
scrapyd deploy shows 0 spiders by scrapyd-client
scrapy中有的spider不出现，显示只有0个spiders。
解决
需要注释掉settings中的

# LOG_LEVEL = "ERROR"
# LOG_STDOUT = True
# LOG_FILE = "/tmp/spider.log"
# LOG_FORMAT = "%(asctime)s [%(name)s] %(levelname)s: %(message)s"

When setting LOG_STDOUT=True, scrapyd-deploy will return 'spiders: 0'. Because the output will be redirected to the file when execute 'scrapy list', like this: INFO:stdout:spider-name. Soget_spider_list can not parse it correctly.

3，查看爬虫任务

在网页中输入：http://localhost:6800/

下图为http://localhost:6800/jobs的内容：

4，运行配置

配置文件：C:\Python27\Lib\site-packages\scrapyd-1.1.0-py2.7.egg\scrapyd\default_scrapyd.conf

[scrapyd]
eggs_dir    = eggs
logs_dir    = logs
items_dir   = items
jobs_to_keep = 50
dbs_dir     = dbs
max_proc    = 0
max_proc_per_cpu = 4
finished_to_keep = 100
poll_interval = 5
http_port   = 6800
debug       = off
runner      = scrapyd.runner
application = scrapyd.app.application
launcher    = scrapyd.launcher.Launcher

[services]
schedule.json     = scrapyd.webservice.Schedule
cancel.json       = scrapyd.webservice.Cancel
addversion.json   = scrapyd.webservice.AddVersion
listprojects.json = scrapyd.webservice.ListProjects
listversions.json = scrapyd.webservice.ListVersions
listspiders.json  = scrapyd.webservice.ListSpiders
delproject.json   = scrapyd.webservice.DeleteProject
delversion.json   = scrapyd.webservice.DeleteVersion
listjobs.json     = scrapyd.webservice.ListJobs

参考

http://www.cnblogs.com/jinhaolin/p/5033733.html
https://scrapyd.readthedocs.io/en/latest/api.html#cancel-json

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