如何使用Shell将Nginx虚拟主机（config）文件拆分为小文件

Question

I have a nginx server and it has around 30+ virtual host block in a single file. All the virtual host block go like that:

    server
       {
    #concrete configuration items
    server_name    myserver.hostname.com;
    #concrete configuration items
    #and so on....

    }

My question is how can I split every server block into a single file named by server_name value? for example the above server block save to a file named myserver.hostname.com.conf I would like to use shell code to complete this task.

By the way, I not sure whether it is a good idea to make every virtual host has its config file.But I did thing as virtual host increasing it became a messy to stuck them all in a common file.

Answer 1

You can use csplit command to split file by context:

$ csplit input.conf '/^\s*server\s*$/' {*}

Then mv (rename) those files to server_name from content:

$ for i in xx*; do mv $i `grep -oPm1 '(?<=server_name).+(?=;)' $i`; done

Answer 2

This script will split the input file into smaller ones:

#!/bin/bash
if [ "$1" == "" ]; then
  echo "USAGE: $0 [filename]"
  exit;
fi
# rm xx* *.conf'; # uncomment to re-un
csplit "$1" '/^\s*server\s*{*$/' {*}
for i in xx*; do
  new=$(grep -oPm1 '(?<=server_name).+(?=;)' $i|sed -e 's/\(\w\) /\1_/g'|xargs);
  if [[ -e $new.conf ]] ; then
    cat "$i">>$new.conf
    rm "$i"
  else
    mv "$i" $new.conf
  fi
done

Answer 3

Based on Kev's answer, I wrote the modified script below.

    #!/bin/bash
    rm xx*
    csplit port80 '/\s*\<server\>\s*/' {*}
    #new_name =''
    for i in xx*
    do
        if grep -oP '(?<=server_name).+;' $i
        then
            result=`grep -oP '(?<=server_name).+;' $i`
            new_name=`echo $result|awk '{print $1}'`
            new_name=${new_name%';'}
            mv $i $new_name
        else
            rm $i
        fi
    done