Internal Round-Robin DNS

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  • #42133

    urajah
    Member

    I use my Zeroshell router to provide DNS services to internal and VPN users. I have 4 web servers configured on an internal network and would like to spread connections for an internal website (http://www.example.com) across all four of these internal web servers instead of creating a single host record pointing to a single web server. Is it possible to set up this type of round-robin DNS internally with Zeroshell?

    Thanks!

    #49365

    ppalias
    Member

    I created a test entry called test and added 3 A records. Each time I queried it, it was resolved with a different IP so I believe it should work the way you want.

    root@blowfish:~# dig test.trendy.awmn

    ; < <>> DiG 9.6.1-P2 < >HEADER< <- opcode: QUERY, status: NOERROR, id: 25716
    ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 4, ADDITIONAL: 1

    ;; QUESTION SECTION:
    ;test.trendy.awmn. IN A

    ;; ANSWER SECTION:
    test.trendy.awmn. 86400 IN A 10.14.149.201
    test.trendy.awmn. 86400 IN A 10.14.149.202
    test.trendy.awmn. 86400 IN A 10.14.149.200

    ;; AUTHORITY SECTION:
    trendy.awmn. 86400 IN NS ns1.trendy.awmn.
    trendy.awmn. 86400 IN NS ns2.trendy.awmn.
    trendy.awmn. 86400 IN NS ns0.trendy.awmn.
    trendy.awmn. 86400 IN NS ns0.nettraptor.awmn.

    ;; ADDITIONAL SECTION:
    ns0.nettraptor.awmn. 3571 IN A 10.21.128.65

    ;; Query time: 10 msec
    ;; SERVER: 10.14.149.1#53(10.14.149.1)
    ;; WHEN: Thu Jan 14 00:56:05 2010
    ;; MSG SIZE rcvd: 181

    root@blowfish:~# ping test
    PING test.trendy.awmn (10.14.149.200) 56(84) bytes of data.
    From koutsomoura.trendy.awmn (10.14.149.62) icmp_seq=1 Time to live exceeded
    From rofos.trendy.awmn (10.14.149.1): icmp_seq=2 Redirect Host(New nexthop: koutsomoura.trendy.awmn (10.14.149.62))
    From koutsomoura.trendy.awmn (10.14.149.62) icmp_seq=2 Time to live exceeded
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=3 Time to live exceeded
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=4 Time to live exceeded
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=5 Time to live exceeded
    ^C
    --- test.trendy.awmn ping statistics ---
    5 packets transmitted, 0 received, +5 errors, 100% packet loss, time 4005ms

    root@blowfish:~# ping test
    PING test.trendy.awmn (10.14.149.202) 56(84) bytes of data.
    From koutsomoura.trendy.awmn (10.14.149.62) icmp_seq=1 Time to live exceeded
    From rofos.trendy.awmn (10.14.149.1): icmp_seq=2 Redirect Host(New nexthop: koutsomoura.trendy.awmn (10.14.149.62))
    From koutsomoura.trendy.awmn (10.14.149.62) icmp_seq=2 Time to live exceeded
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=3 Time to live exceeded
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=4 Time to live exceeded
    ^C
    --- test.trendy.awmn ping statistics ---
    4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3003ms

    root@blowfish:~# ping test
    PING test.trendy.awmn (10.14.149.202) 56(84) bytes of data.
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=1 Time to live exceeded
    From gw-trendy.nvak.awmn (10.14.145.241) icmp_seq=2 Time to live exceeded
    ^C
    --- test.trendy.awmn ping statistics ---
    2 packets transmitted, 0 received, +2 errors, 100% packet loss, time 1001ms

    root@blowfish:~# ping test
    PING test.trendy.awmn (10.14.149.201) 56(84) bytes of data.
    From koutsomoura.trendy.awmn (10.14.149.62) icmp_seq=1 Time to live exceeded
    From rofos.trendy.awmn (10.14.149.1): icmp_seq=2 Redirect Host(New nexthop: koutsomoura.trendy.awmn (10.14.149.62))
    From koutsomoura.trendy.awmn (10.14.149.62) icmp_seq=2 Time to live exceeded
    ^C
    --- test.trendy.awmn ping statistics ---
    2 packets transmitted, 0 received, +2 errors, 100% packet loss, time 1000ms
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