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- NAME
-
- h2n - Translate host table to name server file format
-
- SYNOPSIS
-
- h2n -d DOMAIN -n NET [options]
-
- DESCRIPTION
-
- h2n translates /etc/hosts to DNS files and creates a BIND boot file.
- This tool can be run once or many times. After converting your host
- table to DNS format, you can manually maintain the DNS files, or you
- can maintain the host table and run h2n each time you modify
- /etc/hosts. h2n automatically increments the serial number in each DNS
- file when it makes a new one.
-
- h2n generates files starting with the prefix "db." These are called
- "db files." The domain data is stored in a file called db.DOMAIN,
- where DOMAIN is the first label in your domain name (given with the -d
- option). The address-to-name data is stored in files named db.NET,
- where NET is a network number (given with the -n option).
-
- Each time h2n is run, it generates the DNS files from scratch. Any
- changes you manually made to the DNS files are lost. If you'd like to
- add resource records to a db file generated by h2n, put your RRs in a
- file prefixed with "spcl" instead of "db". h2n will include this
- file's data by adding a $INCLUDE directive to the end of the db file.
-
- By default, h2n will generate an MX record with a weight of 10 that
- points to the host itself as the mail exchanger. MX records can be
- suppressed with -M. Additional MX records can be added with -m. To
- suppress generating the default MX record for a host, include "[no
- smtp]" in that host's host table comment.
-
- By default, h2n will create a boot file, ./boot.cacheonly, for a
- caching only name server. If either of the -z or -Z options are used,
- h2n creates a boot file, named ./boot.sec.save or ./boot.sec
- respectively, for a secondary name server.
-
- If you are running BIND 4.9.3 or later and you'd like to add boot
- file directives to the boot files, put your directives in a file
- called "spcl.boot" (for the primary and secondary server boot files)
- or "spcl.cacheonly" (for a caching only server boot file). h2n will
- include this file's data by adding a "include" directive to the end
- of the boot file.
-
- Options are:
-
- -b BOOTFILE
- Use BOOTFILE instead of the default: ./named.boot.
-
- -c REMOTE-DOMAIN
- Create CNAME records in the default domain for all the
- hosts in REMOTE-DOMAIN. Including more than one -c option
- is allowed. This is intended for creating CNAME records
- in DOMAIN that point to names in REMOTE-DOMAIN.
-
- -d DOMAIN
- Your domain name is DOMAIN. Only 1 -d option is allowed.
- To build data for multiple domains, run h2n multiple times,
- once for each domain. For multiple domains, you have to
- provide your own boot file since the boot file made by
- h2n will only match the arguments for the last time h2n
- was run.
-
- -e DOMAIN
- Eliminate all lines from the host table with names in
- DOMAIN. Including more than one -e option is allowed.
-
- -f FILE
- Command line options are in a file called FILE. This
- option cannot be used within FILE.
-
- -h HOST
- Use HOST in the fields of the SOA record that require a
- hostname. The default is the host on which you run h2n.
-
- -m WEIGHT:MX-HOST
- Include an MX record for each host in your domain pointing
- to MX-HOST at WEIGHT. Including more than one -m option is
- allowed. Example: -m 10:terminator.movie.edu -m
- 20:wormhole
-
- -n NET[:SUBNETMASK]
- NET is your network number without the trailing zeros.
- Including more than one -n option is allowed. If
- SUBNETMASK is provided, create data for each subnet of NET.
- Example: -n 192.249.249 -n 15.15.16:255.255.248.0
-
- -o REFRESH:RETRY:EXPIRE:MINIMUM
- Change the default SOA values (10800:3600:604800:86400) to
- the values provided.
-
- -s SERVER
- List SERVER in each domain's NS records. Including more
- than one -s option is allowed.
-
- -t Generate TXT records from the host table comments. If "[no
- smtp]" appears in a comment, it is ignored.
-
- -u USER
- Use USER in the SOA mail address instead of root. USER can
- be a complete mail address as in: me@a.b.c.
-
- -w Generate WKS records that list the SMTP service over the
- TCP protocol if an MX record is also created.
-
- -y Use the date to create the serial number. The date format
- used is YYYYMMDDXX. YYYY is the year. MM is the month.
- DD is the day of the month. XX is counter that starts at
- 00 and increments each time h2n is run on the same day.
- The date-based serial number must be larger than the existing
- serial number for the date-based serial number to be used.
-
- -z ADDRESS
- Create a boot file, ./boot.sec.save, for a secondary name
- server that lists ADDRESS as the master to load from. Save
- a copy of the domain data in a backup file. (This option
- is similar to the -Z option.)
-
- -C COMMENT-FILE
- Create resource records by using keys in the host table
- comment field as indices into COMMENT-FILE. COMMENT-FILE
- contains "key:resource record" pairs like: "720:IN HINFO
- hp9000s720 hp-ux". When h2n encounters "720" in the
- comment section of the host table, it creates a resource
- record by replacing the "720:" with the host's canonical
- name.
-
- -H HOSTFILE
- Use HOSTFILE instead of /etc/hosts.
-
- -M Don't generate MX records.
-
- -N SUBNETMASK
- Apply SUBNETMASK to all network numbers instead of listing
- each subnet with -n. Specifying a subnet mask with -n
- overrides the -N subnet mask for that network only.
-
- -Z ADDRESS
- Create a boot file, ./boot.sec, for a secondary name server
- that lists ADDRESS as the master to load from. Do not save
- a copy of the data in a backup file. (This option is
- similar to the -z option.)
-
- EXAMPLES
-
- Create name server data for networks 192.249.249 and 192.253.253 in
- movie.edu.
-
- h2n -d movie.edu -n 192.249.249 -n 192.253.253
-
- Create name server data for networks 192.249.249 and 192.253.253 in
- movie.edu. Eliminate lines in the host table that contain fx.movie.edu
- and include MX records for all hosts pointing to the mail hub,
- postmanrings2x.movie.edu. Include all of the options in a file.
-
- h2n -f option_file
-
- option_file contains the following lines:
-
- -d movie.edu
- -n 192.249.249
- -n 192.253.253
- -e fx.movie.edu
- -m 50:postmanrings2x.movie.edu
-