Personal qualities:
1: communication skills, teamwork
2: initiative, execution, energetic, stress resistance
3: work in the courageous and careful, do not go out of the ordinary
4: logical thinking ability to be strong, people
5: have the spirit of exploration and innovation
Technology:
1, development capabilities, this is very important, because the operation and maintenance tools need to develop their own development, development language: c/c++ (one of the necessary), perl, python, php, etc., shell (awk, sed, inspect), the development language: c/c++ (one of the necessary), perl, python, php, etc., the development language: c/c++ (one of the necessary), perl, python, php, etc., the development of shell (awk, sed, inspect). .... etc.), need to have had practical development experience, otherwise the work will be very painful.
2, the application needs to understand: operating system (mainly linux, bsd), webserver related (nginx, apahe, php, lighttpd), database (mysql, oralce), and similar system optimization, clustering things.
3. Networking, security, storage, etc. need to know quite a bit.