一定保证nginx服务不重启

处理方案：

# 获取nginx PID
pid=8192

# generate gdb commands from the process's memory mappings using awk
cat /proc/$pid/maps | awk '$6 !~ "^/" {split ($1,addrs,"-"); print "dump memory mem_" addrs[1] " 0x" addrs[1] " 0x" addrs[2] ;}END{print "quit"}' > gdb-commands

# use gdb with the -x option to dump these memory regions to mem_* files
gdb -p $pid -x gdb-commands

# look for some (any) nginx.conf text
strings mem_* | grep worker_connections mem_*
strings mem_* | grep server_name mem_*
# 获取全部 --从文本中手动提取配置信息--过程可能漫长
strings mem_* > newfile.txt