I recently had to put together a load-balancing configuration for nginx and wish that I had a shell script to generate the very simplest possible nginx setup. I think I have it now:
:
if [ -z "$1" ]; then
echo "Usage: $0 URI HOST1 HOST2 ..."
exit 1
fi
uri="$1"
shift
hosts=$@
out=/etc/nginx/nginx.conf
if [ ! -f $out.bak ]; then
mv $out $out.bak
fi
cat <<EOF > $out
events {
}
http {
upstream configuration_servers {
EOF
for h in $hosts; do
echo " server $h:8080;"
done >> $out
cat <<EOF >> $out
}
server {
listen 80;
location $uri {
proxy_pass http://configuration_servers$uri;
}
}
}
EOF
cat $out
service nginx restart
url=localhost:80$uri
if ! curl $url; then
echo "$0: curl $url failed, exiting..." 1>&2
exit 1
fi
