centos下升级openssl

[openssl下载地址][1]

选择需要升级的版本

### 升级前准备
1.检查版本
```asp
openssl version
```
2.备份
```asp
sudo mv /usr/bin/openssl /usr/bin/openssl.bak
sudo mv /usr/include/openssl /usr/include/openssl.bak
```
### 升级ssl
1.安装缺少的依赖
```asp
sudo yum -y install perl-IPC-Cmd
```
2.安装openssl
```asp
tar -zxf openssl-3.1.0.tar.gz
cd openssl-3.1.0

#创建目录
mkdir -p /usr/local/openssl

./config --shared --prefix=/usr/local/openssl --openssldir=/usr/local/openssl
sudo make -j4
sudo make install
```
3.更新链接库
```asp
sudo ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl
sudo ln -s /usr/local/openssl/include/openssl /usr/include/openssl
sudo ln -s /usr/local/openssl/lib64/libssl.so.3 /usr/lib/libssl.so.3
sudo ln -s /usr/local/openssl/lib64/libcrypto.so.3 /usr/lib/libcrypto.so.3
```
4.并更新ldconfig 库文件，将原有的openssl的lib库路径注释，写/usr/local/lib64
```asp
sudo vim /etc/ld.so.conf
```
```asp
include ld.so.conf.d/*.conf
#/usr/local/openssl/lib
/usr/local/lib64
```
5.更新lib库
```asp
sudo ldconfig
```
6.再次查看版本
```asp
openssl version
```

[1]: https://ftp.openssl.org/source/ "openssl下载地址"