Internal IP addresses

You should never reference a node by IP address, as these are subject to change at any time. For your reference however, the following internal IPs are reserved.

172.16.0.21 dh1.i
172.16.0.22 dh2.i 
172.16.0.23 dh3.i 
172.16.0.24 dh4.i 
172.16.0.25 dh5.i 
172.16.0.26 dh6.i
172.16.0.27 dh7.i
...
172.16.0.40 dh20.i

172.16.0.41 lb1.i memcached1.i redis1.i redis21.i www.example.com
172.16.0.42 lb2.i memcached2.i redis2.i redis22.i www2.example.com
172.16.0.43 lb3.i memcached3.i redis3.i redis23.i www3.example.com
172.16.0.44 lb4.i memcached4.i redis4.i redis24.i www4.example.com
172.16.0.45 lb5.i memcached5.i redis5.i redis25.i www5.example.com

172.16.0.51 db1.i memcached11.i redis11.i redis31.i solr1.i sphinx1.i
172.16.0.52 db2.i memcached12.i redis12.i redis32.i solr2.i sphinx2.i
172.16.0.53 db3.i memcached13.i redis13.i redis33.i solr3.i sphinx3.i
172.16.0.54 db4.i memcached14.i redis14.i redis34.i solr4.i sphinx4.i
172.16.0.55 db5.i memcached15.i redis15.i redis35.i solr5.i sphinx5.i

172.16.0.61 acc1.i
172.16.0.62 acc2.i
172.16.0.63 acc3.i
172.16.0.64 acc4.i
172.16.0.65 acc5.i
172.16.0.71 web1.i
172.16.0.72 web2.i
172.16.0.73 web3.i
172.16.0.74 web4.i
172.16.0.75 web5.i
...
172.16.0.90 web20.i

172.16.0.91 mail1.i
172.16.0.92 mail2.i
172.16.0.93 mail3.i
172.16.0.94 mail4.i
172.16.0.95 mail5.i

172.16.0.101 monitor1.i
172.16.0.102 monitor2.i
172.16.0.103 monitor3.i
172.16.0.104 monitor4.i
172.16.0.105 monitor5.i

172.16.0.110 nfs1.i
172.16.0.111 nfs2.i
172.16.0.112 nfs3.i
172.16.0.113 nfs4.i
172.16.0.114 nfs5.i 

172.16.0.121 pb1.i
172.16.0.122 pb2.i
172.16.0.123 pb3.i
172.16.0.124 pb4.i
172.16.0.125 pb5.i