named-checkzone - zone file validity checking or converting
tool
named-checkzone [-d] [-h] [-j]
[-q] [-v] [-c class] [-f format] [-F
format] [-J filename] [-i mode] [-k mode] [-m
mode] [-M mode] [-n mode] [-l ttl] [-L serial]
[-o filename] [-r mode] [-s style] [-S mode]
[-t directory] [-T mode] [-w directory] [-D]
[-W mode] {zonename} {filename}
named-checkzone checks the syntax and integrity of a zone
file. It performs the same checks as named does when loading a zone.
This makes named-checkzone useful for checking zone files before
configuring them into a name server.
- -d
- This option enables debugging.
- -h
- This option prints the usage summary and exits.
- -q
- This option sets quiet mode, which only sets an exit code to indicate
successful or failed completion.
- -v
- This option prints the version of the named-checkzone program and
exits.
- -j
- When loading a zone file, this option tells named to read the
journal if it exists. The journal file name is assumed to be the zone file
name with the string .jnl appended.
- -J filename
- When loading the zone file, this option tells named to read the
journal from the given file, if it exists. This implies -j.
- -c class
- This option specifies the class of the zone. If not specified, IN
is assumed.
- -i mode
- This option performs post-load zone integrity checks. Possible modes are
full (the default), full-sibling, local,
local-sibling, and none.
Mode full checks that MX records refer to A or AAAA
records (both in-zone and out-of-zone hostnames). Mode local only
checks MX records which refer to in-zone hostnames.
Mode full checks that SRV records refer to A or AAAA
records (both in-zone and out-of-zone hostnames). Mode local only
checks SRV records which refer to in-zone hostnames.
Mode full checks that delegation NS records refer to A
or AAAA records (both in-zone and out-of-zone hostnames). It also checks
that glue address records in the zone match those advertised by the
child. Mode local only checks NS records which refer to in-zone
hostnames or verifies that some required glue exists, i.e., when the
name server is in a child zone.
Modes full-sibling and local-sibling disable
sibling glue checks, but are otherwise the same as full and
local, respectively.
Mode none disables the checks.
- -f format
- This option specifies the format of the zone file. Possible formats are
text (the default), raw, and map.
- -F format
- This option specifies the format of the output file specified. For
named-checkzone, this does not have any effect unless it dumps the
zone contents.
Possible formats are text (the default), which is the
standard textual representation of the zone, and map, raw,
and raw=N, which store the zone in a binary format for rapid
loading by named. raw=N specifies the format version of
the raw zone file: if N is 0, the raw file can be read by any
version of named; if N is 1, the file can only be read by release
9.9.0 or higher. The default is 1.
- -k mode
- This option performs check-names checks with the specified failure
mode. Possible modes are fail, warn (the default), and
ignore.
- -l ttl
- This option sets a maximum permissible TTL for the input file. Any record
with a TTL higher than this value causes the zone to be rejected. This is
similar to using the max-zone-ttl option in named.conf.
- -L serial
- When compiling a zone to raw or map format, this option sets
the "source serial" value in the header to the specified serial
number. This is expected to be used primarily for testing purposes.
- -m mode
- This option specifies whether MX records should be checked to see if they
are addresses. Possible modes are fail, warn (the default),
and ignore.
- -M mode
- This option checks whether a MX record refers to a CNAME. Possible modes
are fail, warn (the default), and ignore.
- -n mode
- This option specifies whether NS records should be checked to see if they
are addresses. Possible modes are fail, warn (the default),
and ignore.
- -o filename
- This option writes the zone output to filename. If filename
is -, then the zone output is written to standard output.
- -r mode
- This option checks for records that are treated as different by DNSSEC but
are semantically equal in plain DNS. Possible modes are fail,
warn (the default), and ignore.
- -s style
- This option specifies the style of the dumped zone file. Possible styles
are full (the default) and relative. The full format
is most suitable for processing automatically by a separate script. The
relative format is more human-readable and is thus suitable for editing by
hand. This does not have any effect unless it dumps the zone contents. It
also does not have any meaning if the output format is not text.
- -S mode
- This option checks whether an SRV record refers to a CNAME. Possible modes
are fail, warn (the default), and ignore.
- -t directory
- This option tells named to chroot to directory, so that
include directives in the configuration file are processed as if
run by a similarly chrooted named.
- -T mode
- This option checks whether Sender Policy Framework (SPF) records exist and
issues a warning if an SPF-formatted TXT record is not also present.
Possible modes are warn (the default) and ignore.
- -w directory
- This option instructs named to chdir to directory, so that
relative filenames in master file $INCLUDE directives work. This is
similar to the directory clause in named.conf.
- -D
- This option dumps the zone file in canonical format.
- -W mode
- This option specifies whether to check for non-terminal wildcards.
Non-terminal wildcards are almost always the result of a failure to
understand the wildcard matching algorithm (RFC 4592). Possible
modes are warn (the default) and ignore.
- zonename
- This indicates the domain name of the zone being checked.
- filename
- This is the name of the zone file.
named-checkzone returns an exit status of 1 if errors were
detected and 0 otherwise.
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