8 Linux Nslookup Commands ເພື່ອແກ້ໄຂບັນຫາ DNS

nslookup ແມ່ນເຄື່ອງມືການບໍລິຫານເສັ້ນ ຄຳ ສັ່ງ ສຳ ລັບການທົດສອບແລະແກ້ໄຂບັນຫາເຊີຟເວີ DNS (Domain Name Server). ມັນຖືກນໍາໃຊ້ເພື່ອສອບຖາມບັນທຶກຊັບພະຍາກອນ DNS (RR) ສະເພາະ. ລະບົບປະຕິບັດການສ່ວນໃຫຍ່ແມ່ນມາພ້ອມກັບຄຸນສົມບັດ nslookup.

ບົດຂຽນນີ້ສະແດງໃຫ້ເຫັນ ຄຳ ສັ່ງ nslookup ທີ່ຖືກ ນຳ ໃຊ້ຢ່າງກວ້າງຂວາງໂດຍລະອຽດ. Nslookup ສາມາດ ດຳ ເນີນການໄດ້ 2 ແບບຄື: ແບບໂຕ້ຕອບແລະບໍ່ມີການໂຕ້ຕອບ. ຮູບແບບໂຕ້ຕອບຖືກໃຊ້ເພື່ອສອບຖາມ DNS-Server ກ່ຽວກັບໂດເມນແລະໂຮດຕ່າງໆ. ຮູບແບບທີ່ບໍ່ມີການໂຕ້ຕອບຖືກໃຊ້ເພື່ອສອບຖາມຂໍ້ມູນຂອງໂດເມນຫລືເຈົ້າພາບ.

ທ່ານອາດຈະສົນໃຈໃນບົດຄວາມຕໍ່ໄປນີ້:

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    • # nslookup yahoo.com

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
Name:   yahoo.com
Address: 72.30.38.140
Name:   yahoo.com
Address: 98.139.183.24
Name:   yahoo.com
Address: 209.191.122.70

    ໂດເມນສອບຖາມຂໍ້ມູນຂ້າງເທິງ www.yahoo.com ກັບເຄື່ອງແມ່ຂ່າຍ DNS ສາທາລະນະ 4.2.2.2 ແລະສ່ວນລຸ່ມນີ້ສະແດງ ຄຳ ຕອບທີ່ບໍ່ມີສິດ ອຳ ນາດ: ສະແດງບັນທຶກຂອງ www.yahoo.com

    # nslookup 209.191.122.70

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
70.122.191.209.in-addr.arpa     name = ir1.fp.vip.mud.yahoo.com.

Authoritative answers can be found from:
    # nslookup ir1.fp.vip.mud.yahoo.com.

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
Name:   ir1.fp.vip.mud.yahoo.com
Address: 209.191.122.70
    # nslookup -query=mx www.yahoo.com

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
www.yahoo.com   canonical name = fd-fp3.wg1.b.yahoo.com.
fd-fp3.wg1.b.yahoo.com  canonical name = ds-fp3.wg1.b.yahoo.com.
ds-fp3.wg1.b.yahoo.com  canonical name = ds-any-fp3-lfb.wa1.b.yahoo.com.
ds-any-fp3-lfb.wa1.b.yahoo.com  canonical name = ds-any-fp3-real.wa1.b.yahoo.com.

Authoritative answers can be found from:
wa1.b.yahoo.com
        origin = yf1.yahoo.com
        mail addr = hostmaster.yahoo-inc.com
        serial = 1344827307
        refresh = 30
        retry = 30
        expire = 86400
        minimum = 1800

    ບັນທຶກມ x ກຳ ລັງຖືກ ນຳ ໃຊ້ເພື່ອ ກຳ ນົດຊື່ໂດເມນໄປຫາບັນຊີຂອງເຄື່ອງແມ່ຂ່າຍແລກປ່ຽນເມລ ສຳ ລັບໂດເມນນັ້ນ. ເພື່ອໃຫ້ມັນບອກວ່າສິ່ງໃດທີ່ mail ໄດ້ຮັບ/ສົ່ງໄປທີ່ @ yahoo.com ຈະຖືກສົ່ງໄປຫາ server server.

    # nslookup -query=ns www.yahoo.com

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
www.yahoo.com   canonical name = fd-fp3.wg1.b.yahoo.com.
fd-fp3.wg1.b.yahoo.com  canonical name = ds-fp3.wg1.b.yahoo.com.
ds-fp3.wg1.b.yahoo.com  canonical name = ds-any-fp3-lfb.wa1.b.yahoo.com.
ds-any-fp3-lfb.wa1.b.yahoo.com  canonical name = ds-any-fp3-real.wa1.b.yahoo.com.

Authoritative answers can be found from:
wa1.b.yahoo.com
        origin = yf1.yahoo.com
        mail addr = hostmaster.yahoo-inc.com
        serial = 1344827782
        refresh = 30
        retry = 30
        expire = 86400
        minimum = 1800
    # nslookup -type=soa www.yahoo.com

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
www.yahoo.com   canonical name = fd-fp3.wg1.b.yahoo.com.
fd-fp3.wg1.b.yahoo.com  canonical name = ds-fp3.wg1.b.yahoo.com.
ds-fp3.wg1.b.yahoo.com  canonical name = ds-any-fp3-lfb.wa1.b.yahoo.com.
ds-any-fp3-lfb.wa1.b.yahoo.com  canonical name = ds-any-fp3-real.wa1.b.yahoo.com.

Authoritative answers can be found from:
wa1.b.yahoo.com
        origin = yf1.yahoo.com
        mail addr = hostmaster.yahoo-inc.com
        serial = 1344827965
        refresh = 30
        retry = 30
        expire = 86400
        minimum = 1800
    # nslookup -query=any yahoo.com

Server:         4.2.2.2
Address:        4.2.2.2#53

Non-authoritative answer:
yahoo.com
        origin = ns1.yahoo.com
        mail addr = hostmaster.yahoo-inc.com
        serial = 2012081016
        refresh = 3600
        retry = 300
        expire = 1814400
        minimum = 600
Name:   yahoo.com
Address: 98.139.183.24
Name:   yahoo.com
Address: 209.191.122.70
Name:   yahoo.com
Address: 72.30.38.140
yahoo.com       mail exchanger = 1 mta7.am0.yahoodns.net.
yahoo.com       mail exchanger = 1 mta5.am0.yahoodns.net.
yahoo.com       mail exchanger = 1 mta6.am0.yahoodns.net.
yahoo.com       nameserver = ns3.yahoo.com.
yahoo.com       nameserver = ns4.yahoo.com.
yahoo.com       nameserver = ns2.yahoo.com.
yahoo.com       nameserver = ns8.yahoo.com.
yahoo.com       nameserver = ns1.yahoo.com.
yahoo.com       nameserver = ns6.yahoo.com.
yahoo.com       nameserver = ns5.yahoo.com.

Authoritative answers can be found from:

    ເພື່ອເປີດໃຊ້ Debug Mode 'ຕັ້ງຄ່າ debug' ຈະໃຫ້ຂໍ້ມູນທີ່ທ່ານພິຈາລະນາເຊັ່ນ TTL, ນີ້ແມ່ນຜົນຜະລິດ.

    # nslookup -debug yahoo.com

> set debug
> yahoo.com
Server:         4.2.2.2
Address:        4.2.2.2#53

------------
    QUESTIONS:
        yahoo.com, type = A, class = IN
    ANSWERS:
    ->  yahoo.com
        internet address = 72.30.38.140
        ttl = 1523
    ->  yahoo.com
        internet address = 98.139.183.24
        ttl = 1523
    ->  yahoo.com
        internet address = 209.191.122.70
        ttl = 1523
    AUTHORITY RECORDS:
    ADDITIONAL RECORDS:
------------
Non-authoritative answer:
Name:   yahoo.com
Address: 72.30.38.140
Name:   yahoo.com
Address: 98.139.183.24
Name:   yahoo.com
Address: 209.191.122.70

    ໃນບົດຂຽນນີ້, ພວກເຮົາໄດ້ພະຍາຍາມປົກປິດ ຄຳ ສັ່ງ nslookup ເຊິ່ງອາດຈະຊ່ວຍທ່ານໃນການຄົ້ນຫາຂໍ້ມູນທີ່ກ່ຽວຂ້ອງກັບຊື່ໂດເມນ. ບົດຂຽນຕໍ່ໄປຈະມີຢູ່ໃນ ຄຳ ສັ່ງ Linux Dig ເຊິ່ງມັນຄ້າຍຄືກັບ nslookup. ຖ້າທ່ານມັກບົດຄວາມກະລຸນາແບ່ງປັນກັບ ໝູ່ ເພື່ອນແລະຢ່າລືມໃຫ້ ຄຳ ຕິຊົມທີ່ມີຄ່າຂອງທ່ານຜ່ານຊ່ອງ ຄຳ ເຫັນ.