Powerful web crawler system: pyspider-Python Tutorial-php.cn

PySpider: A powerful web crawler system written by a Chinese with a powerful WebUI. Written in Python language, distributed architecture, supports multiple database backends, and powerful WebUI supports script editor, task monitor, project manager and result viewer.

1. Build environment:

System version: Linux centos-linux.shared 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09 :22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Python version: Python 3.5.1

1.1. Build python3 environment:

After trying it, I chose the integrated environment Anaconda

1.1.1. Compile

# 下载依赖
yum install -y ncurses-devel openssl openssl-devel zlib-devel gcc make glibc-devel libffi-devel glibc-static glibc-utils sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-deve
# 下载python版本
wget https://www.python.org/ftp/python/3.5.1/Python-3.5.1.tgz
# 或者使用国内源
wget http://mirrors.sohu.com/python/3.5.1/Python-3.5.1.tgz
mv Python-3.5.1.tgz /usr/local/src;cd /usr/local/src
# 解压
tar -zxf Python-3.5.1.tgz;cd Python-3.5.1
# 编译安装
./configure --prefix=/usr/local/python3.5 --enable-shared
make && make install
# 建立软链接
ln -s /usr/local/python3.5/bin/python3 /usr/bin/python3
echo "/usr/local/python3.5/lib" > /etc/ld.so.conf.d/python3.5.conf
ldconfig
# 验证python3
python3
# Python 3.5.1 (default, Oct 9 2016, 11:44:24)
# [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux
# Type "help", "copyright", "credits" or "license" for more information.
# >>>
# pip
/usr/local/python3.5/bin/pip3 install --upgrade pip
ln -s /usr/local/python3.5/bin/pip /usr/bin/pip
# 本人在安装时出现问题 将pip重装
wget https://bootstrap.pypa.io/get-pip.py --no-check-certificate
python get-pip.py

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1.1.2. The integrated environment anaconda

# 集成环境anaconda(推荐)
wget https://repo.continuum.io/archive/Anaconda3-4.2.0-Linux-x86_64.sh
# 直接安装即可
./Anaconda3-4.2.0-Linux-x86_64.sh
# 若出错，可能是解压失败
yum install bzip2

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1.2. Install mariaDB

# 安装
yum -y install mariadb mariadb-server
# 启动
systemctl start mariadb
# 设置为开机启动
systemctl enable mariadb
# 配置密码 默认为空
mysql_secure_installation
# 登录
mysql -u root -p
# 创建一个用户 自己设定账户密码
CREATE USER &#39;user_name&#39;@&#39;localhost&#39; IDENTIFIED BY &#39;user_pass&#39;;
GRANT ALL PRIVILEGES ON *.* TO &#39;user_name&#39;@&#39;localhost&#39; WITH GRANT OPTION;
CREATE USER &#39;user_name&#39;@&#39;%&#39; IDENTIFIED BY &#39;user_pass&#39;;
GRANT ALL PRIVILEGES ON *.* TO &#39;user_name&#39;@&#39;%&#39; WITH GRANT OPTION;

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1.3. Install pyspider

I use Anaconda

# 搭建虚拟环境sbird python版本3.*
conda create -n sbird python=3*
# 进入环境
source activate sbird
# 安装pyspider
pip install pyspider
# 报错 
# it does not exist. The exported locale is "en_US.UTF-8" but it is not supported
# 执行 可写入.bashrc
export LC_ALL=en_US.utf-8
export LANG=en_US.utf-8
#ImportError: pycurl: libcurl link-time version (7.29.0) is older than compile-time version (7.49.0)
conda install pycurl
# 退出
source deactivate sbird
# 若在虚拟机内 出现无法访问localhost:5000 可关闭防火墙
systemctl stop firewalld.service
#########直接运行源码==============
mkdir git;cd git
# 下载
git clone https://github.com/binux/pyspider.git
# 安装
/root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py

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Other methods

# 搭建虚拟环境
pip install virtualenv
mkdir python;cd python
# 创建虚拟环境pyenv3
virtualenv -p /usr/bin/python3 pyenv3
# 进入虚拟环境 激活环境
cd pyenv3/
source ./bin/activate
pip install pyspider
# 若pycurl报错 
yum install libcurl-devel
# 继续
pip install pyspider
# 关闭
deactivate

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I recommend using anaconda to install

If An error occurred during the running of pyspider. Please refer to the anaconda installation section. At this point, visit localhost:5000 to see the page.

1.4.Install Supervisor

# 安装
yum install supervisor -y
# 若无法检索 则添加阿里的epel源
vim /etc/yum.repos.d/epel.repo
# 添加以下内容
[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://mirrors.aliyun.com/epel/7/$basearch
http://mirrors.aliyuncs.com/epel/7/$basearch
failovermethod=priority
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

[epel-debuginfo]
name=Extra Packages for Enterprise Linux 7 - $basearch - Debug
baseurl=http://mirrors.aliyun.com/epel/7/$basearch/debug
http://mirrors.aliyuncs.com/epel/7/$basearch/debug
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=0

[epel-source]
name=Extra Packages for Enterprise Linux 7 - $basearch - Source
baseurl=http://mirrors.aliyun.com/epel/7/SRPMS
http://mirrors.aliyuncs.com/epel/7/SRPMS
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=0
# 安装
yum install supervisor -y
# 测试是否安装成功
echo_supervisord_conf

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1.4.1.Supervisor usage

supervisord   #supervisor的服务器端部分 启动
supervisorctl  #启动supervisor的命令行窗口
# 假设创建进程pyspider01
vim /etc/supervisord.d/pyspider01.ini
# 写入以下内容
[program:pyspider01]

command   = /root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/pyspider01.log
# 重载
supervisorctl reload
# 启动
supervisorctl start pyspider01
# 也可这样启动
supervisord -c /etc/supervisord.conf
# 查看状态
supervisorctl status
# output 
pyspider01            RUNNING  pid 4026, uptime 0:02:40
# 关闭
supervisorctl shutdown

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1.5. Installationredis

# 消息队列采用redis
mkdir download;cd download
wget http://download.redis.io/releases/redis-3.2.4.tar.gz
tar xzf redis-3.2.4.tar.gz
cd redis-3.2.4
make
# 或者直接yum安装
yum -y install redis
# 启动
systemctl start redis.service
# 重启
systemctl restart redis.service
# 停止
systemctl stop redis.service
# 查看状态
systemctl status redis.service
# 更改文件/etc/redis.conf
vim /etc/redis.conf
# 更改内容
daemonize no 改为 daemonize yes
bind 127.0.0.1 改为 bind 10.211.55.22(当前服务器ip)
# 重启redis
systemctl restart redis.service

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1.6. About self-start

# Supervisor添加到自启动服务
systemctl enable supervisord.service
# redis添加到自启动服务
systemctl enable redis.service
# 关闭防火墙自启动
systemctl disable firewalld.service

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At this point, the pyspider single server operating environment has been built and deployed. Start localhost:5000 to enter the web interface.

You can also write a script to run and check the running status in /pyspider/supervisor/pyspider01.log.

2. Distributed deployment

Name the server you just configured centos01. According to this configuration, deploy two centos02 and centos03 respectively.

As follows:

Server name ip description

centos01 10.211.55.22 redis,mariaDB, scheduler
centos02 10.211.55.23 fetcher, processor, result_worker,phantomjs
centos03 10.211.55.24 fetcher, processor,,result_worker,webui

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2.1.centos01

Enter server centos01, After the first step, the basic environment has been set up. First edit the

configuration file /pyspider/config.json

{
 "taskdb": "mysql+taskdb://user_name:user_pass@10.211.55.22:3306/taskdb",
 "projectdb": "mysql+projectdb://user_name:user_pass@10.211.55.22:3306/projectdb",
 "resultdb": "mysql+resultdb://user_name:user_pass@10.211.55.22:3306/resultdb",
 "message_queue": "redis://10.211.55.22:6379/db",
 "logging-config": "/pyspider/logging.conf",
 "phantomjs-proxy":"10.211.55.23:25555",
 "webui": {
  "username": "",
  "password": "",
  "need-auth": false,
  "host":"10.211.55.24",
  "port":"5000",
  "scheduler-rpc":"http:// 10.211.55.22:5002",
  "fetcher-rpc":"http://10.211.55.23:5001"
 },
 "fetcher": {
  "xmlrpc":true,
  "xmlrpc-host": "0.0.0.0",
  "xmlrpc-port": "5001"
 },
 "scheduler": {
  "xmlrpc":true,
  "xmlrpc-host": "0.0.0.0",
  "xmlrpc-port": "5002"
 }
}

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and try to run:

/root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json scheduler
# 报错
ImportError: No module named &#39;mysql&#39;
# 下载 mysql-connector-python
cd ~/git/
git clone https://github.com/mysql/mysql-connector-python.git
# 安装
source activate sbird
cd mysql-connector-python
python setup.py install
# 安装redis
pip install redis
source deactivate
# 运行
/root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json scheduler
# 输出 ok
[I 161010 15:57:25 scheduler:644] scheduler starting...
[I 161010 15:57:25 scheduler:779] scheduler.xmlrpc listening on 0.0.0.0:5002
[I 161010 15:57:25 scheduler:583] in 5m: new:0,success:0,retry:0,failed:0

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After successful operation, you can directly change /etc/supervisord.d/pyspider01.ini as follows:

[program:pyspider01]

command   = /root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json scheduler
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/pyspider01.log
# 重载
supervisorctl reload
# 查看状态
supervisorctl status

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centos01 deployment complete.

2.2.centos02

In centos02, you need to run result_worker, processor, phantomjs, and fetcher

to create files respectively:

/etc/supervisord.d/result_worker.ini

[program:result_worker]

command   = /root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json result_worker
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/result_worker.log
/etc/supervisord.d/processor.ini

[program:processor]

command   = /root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json processor
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/processor.log
/etc/supervisord.d/phantomjs.ini

[program:phantomjs]

command   = /pyspider/phantomjs --config=/pyspider/pjsconfig.json /pyspider/phantomjs_fetcher.js 25555
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/phantomjs.log
/etc/supervisord.d/fetcher.ini

[program:fetcher]

command   = /root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json fetcher
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/fetcher.log

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Create pjsconfig.json in the pyspider directory

{
 /*--ignore-ssl-errors=true */
 "ignoreSslErrors": true,

 /*--ssl-protocol=true */
 "sslprotocol": "any",

 /* Same as: --output-encoding=utf8 */
 "outputEncoding": "utf8",

 /* persistent Cookies. */
 /*cookiesfile="e:/phontjscookies.txt",*/
 cookiesfile="pyspider/phontjscookies.txt",

 /* load image */
 autoLoadImages = false
}

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Download phantomjs to the /pyspider/ folder and add git/pyspider/pyspider/ fetcher/phantomjs_fetcher.js is copied to phantomjs_fetcher.js

# 重载
supervisorctl reload
# 查看状态
supervisorctl status
# output
fetcher             RUNNING  pid 3446, uptime 0:00:07
phantomjs            RUNNING  pid 3448, uptime 0:00:07
processor            RUNNING  pid 3447, uptime 0:00:07
result_worker          RUNNING  pid 3445, uptime 0:00:07

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centos02 is deployed.

2.3.centos03

The deployment of these three processes fetcher, processor, result_worker is the same as centos02. This server mainly adds webui on the basis of the previous ones.

Create file:

/etc/supervisord.d/webui.ini

[program:webui]

command   = /root/anaconda3/envs/sbird/bin/python /root/git/pyspider/run.py -c /pyspider/config.json webui
directory  = /root/git/pyspider
user     = root
process_name = %(program_name)s
autostart  = true
autorestart = true
startsecs  = 3

redirect_stderr     = true
stdout_logfile_maxbytes = 500MB
stdout_logfile_backups = 10
stdout_logfile     = /pyspider/supervisor/webui.log
# 重载
supervisorctl reload
# 查看状态
supervisorctl status
# output
fetcher             RUNNING  pid 2724, uptime 0:00:07
processor            RUNNING  pid 2725, uptime 0:00:07
result_worker          RUNNING  pid 2723, uptime 0:00:07
webui              RUNNING  pid 2726, uptime 0:00:07

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3. Summary

[Related recommendations]

1.
Python Free video tutorial

2. Python learning manual

3. Python object-oriented video tutorial

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