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rpm -ihv http://installrepo.kaltura.org/releases/kaltura-release.noarch.rpm
yum install kaltura-nginx

user nginx;
worker_processes 4;

events {
  worker_connections 1024;
}

http {
  server {
    listen 8980;

    # This URL provides RTMP statistics in XML
    location /stat {
      rtmp_stat all;

      # Use this stylesheet to view XML as web page
      # in browser
      rtmp_stat_stylesheet /stat.xsl;
    }

    location /stat.xsl {
      # XML stylesheet to view RTMP stats.
      # Copy stat.xsl wherever you want
      # and put the full directory path here
      root /etc/nginx/;
    }

    vod_mode local;
    vod_last_modified 'Sun, 19 Nov 2000 08:52:00 GMT';
    vod_last_modified_types *;
    vod_metadata_cache metadata_cache 512m;
    vod_response_cache response_cache 128m;
    gzip on;
    gzip_types application/vnd.apple.mpegurl;
    open_file_cache          max=1000 inactive=5m;
    open_file_cache_valid    2m;
    open_file_cache_min_uses 1;
    open_file_cache_errors   on;
    
    location /thumb/ {
      alias /var/avalon/rtmp_streams/;
      vod thumb;
    }
    
    location ~ ^/avalon/(?<stream>.+)/(?<resource>.+\.(?:m3u8|ts)) {
      alias /var/avalon/rtmp_streams/$stream;
      vod hls;

      set $token "$arg_token";
      add_header X-Stream-Auth-Token "$token";
      
      sub_filter_types application/vnd.apple.mpegurl;
      sub_filter_once off;
      sub_filter '.ts' ".ts?token=$token";

      auth_request /auth;
      add_header Access-Control-Allow-Headers '*';
      add_header Access-Control-Expose-Headers 'Server,range,Content-Length,Content-Range';
      add_header Access-Control-Allow-Methods 'GET, HEAD, OPTIONS';
      add_header Access-Control-Allow-Origin '*';
      expires 100d;
    }

    location = /auth {
      # resolver 127.0.0.1;
      proxy_pass http://127.0.0.1/authorize.txt?token=$token&name=$stream;
      proxy_pass_request_body off;
      proxy_set_header Content-Length "";
      proxy_set_header X-Original-URI $request_uri;
    }

    location /crossdomain.xml {
      default_type text/xml;
      return 200 '<?xml version="1.0"?>
        <!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd">
        <cross-domain-policy>
          <site-control permitted-cross-domain-policies="all"/>
          <allow-access-from domain="*" secure="false"/>
          <allow-http-request-headers-from domain="*" headers="*" secure="false"/>
        </cross-domain-policy>';
      expires 24h;
    }
  }
}

listen should use a public open port.

alias should point to where the streams are.

proxy_pass needs changing if installing Nginx on a different server.

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  NGINX is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server
# processname: nginx
# config:      /etc/nginx/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /var/run/nginx.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/sbin/nginx"
prog=$(basename $nginx)

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx

lockfile=/var/lock/subsys/nginx

make_dirs() {
   # make required directories
   user=`$nginx -V 2>&1 | grep "configure arguments:.*--user=" | sed 's/[^*]*--user=\([^ ]*\).*/\1/g' -`
   if [ -n "$user" ]; then
      if [ -z "`grep $user /etc/passwd`" ]; then
         useradd -M -s /bin/nologin $user
      fi
      options=`$nginx -V 2>&1 | grep 'configure arguments:'`
      for opt in $options; do
          if [ `echo $opt | grep '.*-temp-path'` ]; then
              value=`echo $opt | cut -d "=" -f 2`
              if [ ! -d "$value" ]; then
                  # echo "creating" $value
                  mkdir -p $value && chown -R $user $value
              fi
          fi
       done
    fi
}

start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    make_dirs
    echo -n $"Starting $prog: "
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc $prog -QUIT
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    configtest || return $?
    stop
    sleep 1
    start
}

reload() {
    configtest || return $?
    echo -n $"Reloading $prog: "
    killproc $nginx -HUP
    RETVAL=$?
    echo
}

force_reload() {
    restart
}

configtest() {
  $nginx -t -c $NGINX_CONF_FILE
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
            ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
        exit 2
esac

useradd -M -s /bin/nologin nginx
chown -R nginx:nginx /etc/nginx /var/log/nginx 

chmod +x /etc/init.d/nginx
service nginx start

streaming:
  server: :nginx
  http_base: 'http://localhost:8980/avalon'