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让python requests 支持 socks5代理 requests support socket proxy 
pip install —upgrade requests “requests[socks]”

import requests
requests.get("http://www.google.com", proxies={"http":"sock5://127.0.0.1:1080"})

或者
pip install requests-unixsocket

import requests_unixsocket as requests
requests.get("http://www.google.com", proxies={"http":"sock5://127.0.0.1:1080"})

grep -rl "s.dependency 'React/Core'" node_modules/ | xargs sed -i '' 's=React/Core=React-Core=g'

解决办法：
1、执行Linux虚拟机。
2、执行 sudo mkdir /sys/fs/cgroup/systemd
3、执行 sudo mount -t cgroup -o none,name=systemd cgroup /sys/fs/cgroup/systemd
4、再次启动容器，如下图：

Backup then:
root@aaa ~> rm -rf /var/run/docker/runtime-runc/moby/*
root@aaa ~> service docker stop
root@aaa ~> reboot

问题发生
有两个闲置的容器在删除时发生错误，处在Removal In Progress状态。在重启Docker后处于Dead状态。

$ docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                PORTS                                      NAMES
cdcf0acae1af        nginx:latest        "nginx -g 'daemon of…"   6 months ago        Removal In Progress                                              webproxy
c58e2a73f117        hexoblogs:latest    "nginx -g 'daemon of…"   11 months ago       Removal In Progress                                              dhblogs
删除时提示信息如下：


$ sudo docker rm webproxy
Error response from daemon: driver "devicemapper" failed to remove root filesystem for cdcf0acae1afb7da7e57653945b7322e32bc6909444558ba6834612b8bfa5ebd: remove /mnt/docker/devicemapper/mnt/5faf8f2ec431bad0e1e2938330b2844209e864b1b76c857fea5f29b44a18999a: device or resource busy
网上有很多类似的解决办法，但试了几个均不能使用，例如：

$ docker system prune
$ find /var/lib/docker -name "*webproxy*"
$ mount -l
$ umount
$ ...
最终解决方案：

$ grep docker /proc/*/mountinfo | grep 5faf8f2ec431bad0e1e2938330b2844209e864b1b76c857fea5f29b44a18999a
/proc/24762/mountinfo:145 143 252:5 / /mnt/docker/devicemapper/mnt/5faf8f2ec431bad0e1e2938330b2844209e864b1b76c857fea5f29b44a18999a rw,relatime shared:97 - xfs /dev/mapper/docker-253:17-15728997-5faf8f2ec431bad0e1e2938330b2844209e864b1b76c857fea5f29b44a18999a rw,nouuid,attr2,inode64,logbsize=64k,sunit=128,swidth=128,noquota
$ kill -9 24762
$ docker rm dhblogs
dhblogs
说明：grep检索的不是容器号，而是删除时提示信息中/mnt/docker/devicemapper/mnt/*** 驱动器号，得到占用该驱动器的进程号 24762(/proc/24762/mountinfo)，杀死进程即可

变异安装mysql:
https://dev.mysql.com/doc/refman/5.7/en/installing-source-distribution.html
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.30.tar.gz

shell> mkdir bld shell> cd bld
cmake .. -DMYSQL_TCP_PORT=3307 -DMYSQL_UNIX_ADDR=/var/run/mysqld/5.7/mysql.sock -DCMAKE_INSTALL_PREFIX=/usr/local/mysql/5.7 -DMYSQL_DATADIR=/home/mysql5.7 -DDOWNLOAD_BOOST=1 -DWITH_BOOST=/usr/local/boost
shell> make shell> make install

bin/mysqld --defaults-file=/etc/mysql/5.7/my.cnf --initialize --user=mysql
=======start========= 
chown -R mysql:mysql /var/run/mysqld/5.7 
/usr/local/mysql/5.7/bin/mysqld_safe --defaults-file=/etc/mysql/5.7/my.cnf

/usr/local/mysql/5.7/bin/mysql -h127.0.0.1 -P 3307 -uroot -p
ALTER USER 'root'@'localhost' IDENTIFIED BY 'root-password';
CREATE USER 'root'@'%' IDENTIFIED BY 'root-password';
grant all on *.* to 'root'@'%' with grant option;

-----------------
~# cat /etc/my.cnf
[mysqld]
user		= mysql
port		= 3307
basedir		= /usr/local/mysql/5.7
pid-file	= /var/run/mysqld/5.7/mysqld.pid
socket		= /var/run/mysqld/5.7/mysqld.sock
datadir		= /var/lib/mysql/5.7
log-error	= /var/log/mysql/error-5.7.log
# By default we only accept connections from localhost
#bind-address	= 127.0.0.1
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

query_cache_size=512M
query_cache_type=1
key_buffer_size=256M
innodb_buffer_pool_size=512M

language = /usr/local/mysql/5.7/share/english


sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

配置开机启动项

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
chkconfig --add mysqld
chkconfig mysqld on

#nohup scrapy runspider spider.py > urls.log &
import scrapy

class MySpider(scrapy.Spider):
    name = 'domain'
    allowed_domains = ['domain']
    start_urls = [
        'https://domain/'
    ]

    #avoid repeat
    tempList = []

    def parse(self, response):
        # for h3 in response.xpath('//h3').getall():
        #     yield {"title": h3}

        for link in response.xpath('//a/@href').getall():
            if link not in self.tempList:
                print(link)
                self.tempList.append(link)
                yield scrapy.Request(response.urljoin(link), self.parse)