hi, my redis crashed today. Thanks for your help

redis version : 2.6.10 ( role : master )
server info : ubuntu 12.10 (3.5.0-17-generic x86_64)
gcc : 4.7.2

error log :

[1752 | signal handler] (1365998382) Received SIGTERM, scheduling shutdown...
[1752] 15 Apr 12:59:42.800 # User requested shutdown...
[1752] 15 Apr 12:59:42.800 # Redis is now ready to exit, bye bye...