System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP)
Example hosts Files
The following code examples show db.doc and db.sales files for the two master servers on the two networks.
Example 5–8 Example db.doc File for dnsmastr
server
; SOA rec
doc.com. IN SOA sirius.doc.com. sysop.centauri.doc.com. (
19970332 ; serial number
10800 ; refresh every 3 hours
10800 ; retry every 3 hours
604800 ; expire after a week
86400 ) ; TTL of 1 day
; Name Servers
doc.com. IN NS sirius.doc.com.
sales.doc.com. IN NS altair.sales.doc.com.
; Addresses
localhost IN A 127.0.0.1
sirius IN A 123.45.6.1
rigel IN A 123.45.6.112
antares IN A 123.45.6.90
polaris IN A 123.45.6.101
procyon IN A 123.45.6.79
tauceti IN A 123.45.6.69
altair.sales.doc.com. N A 111.22.3.4
; aliases
dnsmastr IN CNAME sirius.doc.com.
dnssecond.doc.com IN CNAME deneb.doc.com
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Example 5–9 Example db.sales File for dnssales
server
; SOA rec
sales.doc.com. IN SOA altair.sales.doc.com. sysop.polaris.doc.com. (
19970332 ; serial number
10800 ; refresh every 3 hours
10800 ; retry every 3 hours
604800 ; expire after a week
86400 ) ; TTL of 1 day
; Name Servers
doc.com. IN NS sirius.doc.com.
sales.doc.com. IN NS altair.sales.doc.com.
; Addresses
altair IN A 111.22.3.4
localhost IN A 127.0.0.1
sirius.doc.com. IN A 123.45.6.1
luna IN A 192.168.8.22
phoebus IN A 192.168.8.24
deimos IN A 192.168.8.25
ganymede IN A 192.168.8.27
europa IN A 192.168.8.28
callisto IN A 192.168.8.29
;
; aliases
dnssales.sales.doc.com IN CNAME altair.sales.doc.com
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