Puppet users - Feb 2013 - Help needed in setting up a simple ENC

puppet maser conf:
[main]
    logdir = /var/log/puppet
    rundir = /var/run/puppet
    ssldir = $vardir/ssl

[master]
    classfile = $vardir/classes.txt
    localconfig = $vardir/localconfig
    user = root
    group = root
    fileserverconfig = /etc/puppet/fileserver.conf
    reportdir = /home/logs/puppet/reports
    masterhttplog = /home/logs/puppet/masterhttp.log
    masterlog = /home/logs/puppet/puppetmaster.log
    reports = log,foreman 
    reports=foreman,log
    templatedir = /etc/puppet/templates
    node_terminus = exec
    external_nodes = /etc/puppet/puppet_node_classifier


site.pp:
#node default {
#       exec {"echo 123":
#               path => "/sbin:/usr/bin:/usr/sbin:/bin",
#       }
#}

#node /local-web-cdn-70-200.idc.test.cn/ {
#    include tools
#}

run script:
[root@puppetmaster-tools yaml]# sh  /etc/puppet/puppet_node_classifier 
local-web-cdn-70-200.idc.test.cn
---
environment: production
classes: 
  - tools

Permission :
[root@puppetmaster-tools yaml]# ll  /etc/puppet/puppet_node_classifier 
-rwxr-xr-x 1 root root 133 Feb 20 20:01 /etc/puppet/puppet_node_classifier


but agent cat not running:
-bash-3.2# puppetd --test  
err: Could not retrieve catalog from remote server: Error 400 on SERVER: 
Could not find default node or by name with 
''local-web-cdn-70-200.idc.test.cn, local-web-cdn-70-200.idc.test, 
local-web-cdn-70-200.idc, local-web-cdn-70-200'' on node 
local-web-cdn-70-200.idc.test.cn
warning: Not using cache on failed catalog
err: Could not retrieve catalog; skipping run


if  cancel exegesis site.pp ,it work ok, how ?

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