people please help me, I can not run Nginx


root@servidor [~]# proxy_passRestarting nginx daemon: nginxnginx: [emerg] "proxy_pass" directive is not allowed here in /etc/nginx/nginx.conf:45


user nobody;
# no need for more workers in the proxy mode
worker_processes 1;
error_log /var/log/nginx/error.log info;
worker_rlimit_nofile 20480;
events {
worker_connections 5120; # increase for busier servers
use epoll; # you should use epoll here for Linux kernels 2.6.x
}
http {
server_name_in_redirect off;
server_names_hash_max_size 2048;
server_names_hash_bucket_size 256;
include mime.types;
default_type application/octet-stream;
server_tokens off;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 60;
gzip on;
gzip_vary on;
gzip_disable "MSIE [1-6]\.";
gzip_proxied any;
gzip_http_version 1.1;
gzip_min_length 0;
gzip_comp_level 6;
gzip_buffers 16 8k;
# You can remove image/png image/x-icon image/gif image/jpeg if you have slow CPU
gzip_types text/plain text/xml text/css application/x-javascript application/xml image/png image/x-icon image/gif image/jpeg application/xml+rss text/javascript application/atom+xml;
ignore_invalid_headers on;
client_header_timeout 3m;
client_body_timeout 3m;
send_timeout 3m;
reset_timedout_connection on;
connection_pool_size 256;
client_header_buffer_size 256k;
large_client_header_buffers 4 256k;
client_max_body_size 4M;
client_body_buffer_size 128k;
request_pool_size 32k;
output_buffers 4 32k;
postpone_output 1460;
proxy_temp_path /tmp/nginx_proxy/;
proxy_pass http://127.0.0.1:8081;
proxy_set_header Host \$host;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
client_body_in_file_only on;
log_format bytes_log "$msec $bytes_sent .";
include "/etc/nginx/vhosts/*";
}