BIND 9.9.4 not caching resolved queries

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ambiguous
Posts: 1
Joined: 2017/12/29 19:07:17

BIND 9.9.4 not caching resolved queries

Post by ambiguous » 2017/12/29 19:20:01

Hello im working with a Centos 7.4.1708
Migrated from an old BIND 9.3.6

Not much expierence on migrating services like this, i installed bind on the new server and "copy paste" the config file and another resources
It is working "fine", the main problem is that it is taking way to much to resolve queries.

Made some local dig test and it scares me the times it display

Code: Select all

# dig google.com +trace

; <<>> DiG 9.9.4-RedHat-9.9.4-51.el7_4.1 <<>> google.com +trace
;; global options: +cmd
.                       22136   IN      NS      j.root-servers.net.
.                       22136   IN      NS      h.root-servers.net.
.                       22136   IN      NS      c.root-servers.net.
.                       22136   IN      NS      a.root-servers.net.
.                       22136   IN      NS      i.root-servers.net.
.                       22136   IN      NS      b.root-servers.net.
.                       22136   IN      NS      k.root-servers.net.
.                       22136   IN      NS      l.root-servers.net.
.                       22136   IN      NS      m.root-servers.net.
.                       22136   IN      NS      d.root-servers.net.
.                       22136   IN      NS      g.root-servers.net.
.                       22136   IN      NS      f.root-servers.net.
.                       22136   IN      NS      e.root-servers.net.
.                       516925  IN      RRSIG   NS 8 0 518400 20180111170000 20171229160000 46809 . maOw4MbRqOKZNnEGzKXyYseLb7FRzkLFFOJbnCy8eeSxEkyPlhJdmBEm K97PblnLvFY+s/hq0jyo+xQj2TrVqhaiU+AC0sdtGg6jp5B9icFrEDy2 0GoVnShHNoXQGeE8YFw9er7J7GF+x+zkPF5ExL4fM1o73slVcKi5gftR rh6LlgTkRxm4naTG68DpeXfurwKfkm3Guainput+Us+JaV1sheihDBMV v5xW0SIQ0Y+DSYSO9AAdWKkJhUq1fP8Gun2BF08+J42JtZSwtlG6F68s lANZl4IFOaWIUDUYQYKgfUo6ObJbJnR9iMltbKD14UFk9y1d5nWaYMLz uFCRMw==
;; Received 1097 bytes from 127.0.0.1#53(127.0.0.1) in 96508 ms

com.                    172800  IN      NS      j.gtld-servers.net.
com.                    172800  IN      NS      e.gtld-servers.net.
com.                    172800  IN      NS      h.gtld-servers.net.
com.                    172800  IN      NS      f.gtld-servers.net.
com.                    172800  IN      NS      i.gtld-servers.net.
com.                    172800  IN      NS      l.gtld-servers.net.
com.                    172800  IN      NS      b.gtld-servers.net.
com.                    172800  IN      NS      c.gtld-servers.net.
com.                    172800  IN      NS      d.gtld-servers.net.
com.                    172800  IN      NS      a.gtld-servers.net.
com.                    172800  IN      NS      g.gtld-servers.net.
com.                    172800  IN      NS      k.gtld-servers.net.
com.                    172800  IN      NS      m.gtld-servers.net.
com.                    86400   IN      DS      30909 8 2 E2D3C916F6DEEAC73294E8268FB5885044A833FC5459588F4A9184CF C41A5766
com.                    86400   IN      RRSIG   DS 8 1 86400 20180111170000 20171229160000 46809 . i4pRcrVcektbukdrGvV1ruuHjF4p6+VbExnru2M3u6ee2yUsndgAOnhR DHu74x+FFR0a1ZwIPFtGU9Dh+9TsvxpJo14RLKEFVHCxjWt7wFPJ5vN8 TmDe0f5rYyw2gaFMO0NCLaZqzHtMpkCZDcTGfd6fo4O6ebBgcZrJK2PG vbn3HXyRQvzkzPv3SripzQwaxyo+FDIqcnHy/Vc1PxqDg27nPcgPLYts +nMm3LQrzRj8EmfeMwcZ//NY2LGe4mMQu3khExpNnhdGQY3/QrOzIn3E o4hhBew9eF6kqKEiAXm3cVBqYHHkHbs4lZVnvxQ2IXTVM8MCiMEz2zxw aji7ew==
;; Received 1170 bytes from 192.112.36.4#53(g.root-servers.net) in 130100 ms

google.com.             172800  IN      NS      ns2.google.com.
google.com.             172800  IN      NS      ns1.google.com.
google.com.             172800  IN      NS      ns3.google.com.
google.com.             172800  IN      NS      ns4.google.com.
CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN NSEC3 1 1 0 - CK0Q1GIN43N1ARRC9OSM6QPQR81H5M9A NS SOA RRSIG DNSKEY NSEC3PARAM
CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN RRSIG NSEC3 8 2 86400 20180104055132 20171228044132 11324 com. SWVc+Ya4MZCDwoPuuPIs01QFxl7Z2kJbRVjvfV7ZRX0Cq/4nDJgDwyzk +tvU2CeUiRwNLyC9Zg6Hn3CaI22lc80xt4OKL+NlJ7Q3eEr7N1uVUXJN ceR8XQok1A/7XX9U01a675miB8sbi0BPs09F+Sv/TEJrHrmZUXGwILW5 ckk=
S848U70KJDCTE8UH1N07QH2EK7LNOUC6.com. 86400 IN NSEC3 1 1 0 - S84CEFMDU6ABFSN4V0L2VLLOASCD5IV2 NS DS RRSIG
S848U70KJDCTE8UH1N07QH2EK7LNOUC6.com. 86400 IN RRSIG NSEC3 8 2 86400 20180102230147 20171226215147 11324 com. nT2B9RU3gk5T7awhRNWID8XGEzJBYQzMcPoYl45865AFaph8wrik8Uc6 4tyRePg2gmYGSFpCDAkD5ZIIneg89iK36GxERweP47rLwce7gOx9GfNX yb9KnlMO/YzyWKDWyz1hY1bMnGDUAZnlU9AA1UduhHLvBhGJ3j9+Eumy vN8=
;; Received 660 bytes from 192.12.94.30#53(e.gtld-servers.net) in 32222 ms

google.com.             300     IN      A       172.217.12.46
;; Received 44 bytes from 216.239.34.10#53(ns2.google.com) in 45 ms
Any advice is welcome

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avij
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Re: BIND 9.9.4 not caching resolved queries

Post by avij » 2017/12/29 20:17:14

What do you have in your /etc/resolv.conf? Do you get similar results with dig google.com +trace @127.0.0.1 ?

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