Install Shadowsocks-libev on Debian 8 (Jessie)
The Vps is too old to get a newer OS from the provider. create /etc/apt/sources.list.d/jessie-backports.list, and fill in the following lines deb http://archive.debian.org/debian jessie-backports main deb http://archive.debian.org/debian jessie-backports-sloppy main apt-get update -o Acquire::Check-Valid-Until=false apt-get install shadowsocks-libev the -o Acquire::Check-Valid-Until=false is the key information. Hope it is helpful.