CentOS7开启BBR加速 BBR是Google开源的一种TCP网络拥塞优化算法，TCP BBR 致力于解决两个问题：在有一定丢包率的网络链路上充分利用带宽。降低网络链路上的 buffer 占用率，从而降低延迟，对于VPS远程下载或者HTTP网页访问速度都有显著提升。TCP 拥塞控制的目标是最大化利用网络上瓶颈链路的带宽。

Linux升级openssl版本 1、下载最新版本wget https://www.openssl.org/source/openssl-1.1.1w.tar.gz2、解压并进入解压目录后执行：./config --prefix=/usr/local/openssl shared zlib make depend make && make install3、备份当前openssl：mv /usr/bin/openssl /usr/bin/openssl.bak mv /usr/local/openssl /usr/local/openssl.bak mv /usr/include/openssl /usr/include/openssl.bak mv /usr/local/openssl/bin/openssl /usr/local/openssl/bin/openssl.bak4、配置使用新版本：ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl ln -s /usr/local/openssl/include/openssl /usr/include/openssl5、更新动态链接库数据：echo “/usr/local/ssl/lib” >> /etc/ld.so.conf ldconfig -v6、重新查看版本号：openssl version结果报错了，这是由于openssl库的位置不正确造成的。可以做一个软连接：ln -s /usr/local/openssl/lib/libssl.so.1.1 /usr/lib/ ln -s /usr/local/openssl/lib/libcrypto.so.1.1 /usr/lib/然后再执行第5步再查看版本号openssl version转载自：https://blog.csdn.net/qq_41570012/article/details/125597119

Centos安装python 1.下载python3编译的依赖包yum install -y gcc patch libffi-devel python-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel2.下载python包wget https://www.python.org/ftp/python/3.12.3/Python-3.12.3.tgz3.解压缩源码包tar -zxvf Python-3.12.3.tgz4.创建python的安装目录mkdir -p /usr/local/python35.进入解压后的目录并且执行cd Python-3.12.3 ./configure --prefix=/usr/local/python3/6.编译并安装make && make install7.添加环境变量vi /etc/profile在末尾添加PATH=/usr/local/software/python/bin:$PATH保存后执行source /etc/profile8.修改python的链接指向mv /usr/bin/python3 /usr/bin/python3.bak ln -s /usr/local/python3/bin/python3 /usr/bin/python3转载自：https://blog.csdn.net/weixin_41133459/article/details/125316142

pip提示SSL module is not available Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping

Centos上使用docker安装transmission docker run -d \ --name=transmission \ -e PUID=1000 \ -e PGID=1000 \ -e TZ=Asia/Shanghai \ -e TRANSMISSION_WEB_HOME=/config/transmission-web-control/dist \ -e USER=<用户名> \ -e PASS=<密码> \ -e PEERPORT=<数据端口> \ -p 9091:9091 \ -p <数据端口>:<数据端口> \ -p <数据端口>:<数据端口>/udp \ -v /home/docker/transmission/config:/config \ -v /home/outdisk/qbittorrent:/downloads \ -v /home/docker/transmission/watch:/watch \ --restart unless-stopped \ lscr.io/linuxserver/transmission:latest下载https://github.com/transmission-web-control/transmission-web-control/releases/latest/download/dist.zip，将dist目录移动为TRANSMISSION_WEB_HOME