安装了Nginx+PHP7后，发现SS服务器不能用了，试图重新启动ss,结果报错如下：
INFO: loading config from ss.json 2016-12-14 22:47:50 INFO loading libcrypto from libcrypto.so.1.1 Traceback (most recent call last): File “/usr/local/bin/sslocal”, line 11, in sys.exit(main()) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/local.py”, line 39, in main config = shell.get_config(True) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/shell.py”, line 262, in get_config check_config(config, is_local) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/shell.py”, line 124, in check_config encrypt.try_cipher(config[‘password’], config[‘method’]) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/encrypt.py”, line 44, in try_cipher Encryptor(key, method) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/encrypt.py”, line 83, in init random_string(self._method_info[1])) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/encrypt.py”, line 109, in get_cipher return m[2](method, key, iv, op) File “/usr/local/lib/python2.7/dist-packages/shadowsocks/crypto/openssl.py”, line 76, in init load_openssl() File “/usr/local/lib/python2.7/dist-packages/shadowsocks/crypto/openssl.py”, line 52, in load_openssl libcrypto.EVP_CIPHER_CTX_cleanup.argtypes = (c_void_p,) File “/usr/lib/python2.7/ctypes/init.py”, line 375, in getattr func = self.getitem(name) File “/usr/lib/python2.7/ctypes/init.py”, line 380, in getitem func = self._FuncPtr((name_or_ordinal, self)) AttributeError: /usr/lib/x86_64-Linux-gnu/libcrypto.so.1.1: undefined symbol: EVP_CIPHER_CTX_cleanup
这个问题是由于在openssl1.1.0版本中，废弃了EVP_CIPHER_CTX_cleanup函数，如官网中所说：
[v_notice]EVP_CIPHER_CTX was made opaque in OpenSSL 1.1.0. As a result, EVP_CIPHER_CTX_reset() appeared and EVP_CIPHER_CTX_cleanup() disappeared.[/v_notice]
[v_notice]EVP_CIPHER_CTX_init() remains as an alias for EVP_CIPHER_CTX_reset().[/v_notice]
修改方法：
1,用vim打开文件：
vim /usr/local/lib/python2.7/dist-packages/shadowsocks/crypto/openssl.py
(该路径请根据自己的系统情况自行修改，如果不知道该文件在哪里的话，可以使用find命令查找文件位置)
2,跳转到52行（shadowsocks2.8.2版本，其他版本搜索一下cleanup）
3, 进入编辑模式
4,将第52行libcrypto.EVP_CIPHER_CTX_cleanup.argtypes = (c_void_p,)
改为libcrypto.EVP_CIPHER_CTX_reset.argtypes = (c_void_p,)
5,再次搜索cleanup（全文件共2处，此处位于111行），将libcrypto.EVP_CIPHER_CTX_cleanup(self._ctx) 改为libcrypto.EVP_CIPHER_CTX_reset(self._ctx)
6,保存并退出
7, 启动shadowsocks服务：
service shadowsocks start
或
sslocal -c ss
配置文件目录
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某些update操作后，关于shadowsocks服务报错问题
问题解决