四、主要的软件安装
前面说过，我的习惯是，装系统的时候就安装一个内核和编译系统，得到了一个干净的系统后，再安装其他的软件就比较清晰。另一点，除非搞不到源代码版本，一般情况下我都会下载官方版本的源代码文件，来重新编译之。同样的，选择软件版本要根据该软件的Release Note来决定，并非越新越好。这就是为什么很多软件都是几个版本齐头并进的发展之原因。这些软件不同版本之间的安装方法会有少许不同，安装前一定要仔细阅读目录中的README文件和INSTALL文件，否则这些少许不同会造成不少得麻烦。下面描述的安装过程都核版本号紧密相关。另外，所有的软件都把程序文件的包拷贝到/usr/local/src目录中再解压缩，这是习惯。因为在Linux中习惯于把后来的软件装在/usr/local中。
(1)安装DNS服务器
1、从www.isc.org下载bind 域名服务器软件。我们这里用的是bind8.3.0，bind8分支和bind9分支是并行发展的。根据自己的实际情况选择合适的bind版本。
2、mkdir /usr/src/bind83
3、下载的文件叫bind-src.tar.gz，复制到/usr/local/src/bind83目录下。
4、cd /usr/local/src/bind83
5、tar zxvf bind-src.tar.gz
6、cd src
7、make stdlinks
8、make clean
9、make depend
10、make all
11、make install
12、编辑配置文件：/etc/named.conf内容如下，需要更改的部分用黑体标出：
/*
* This is a worthless, nonrunnable example of a named.conf file that has
* every conceivable syntax element in use. We use it to test the parser.
* It could also be used as a conceptual template for users of new features.
*/
/*
* C-style comments are OK
*/
// So are C -style comments
# So are shell-style comments
// watch out for ";" -- it's important!
options {
directory "/var/named";
// use current directory
named-xfer "/usr/libexec/named-xfer";
// _PATH_XFER
dump-file "named_dump.db";
// _PATH_DUMPFILE
pid-file "/var/run/named.pid";
// _PATH_PIDFILE
statistics-file "named.stats";
// _PATH_STATS
memstatistics-file "named.memstats";
// _PATH_MEMSTATS
check-names master fail;
check-names slave warn;
check-names response ignore;
host-statistics no;
deallocate-on-exit no;
// Painstakingly deallocate all
// objects when exiting instead of
// letting the OS clean up for us.
// Useful a memory leak is suspected.
// Final statistics are written to the
// memstatistics-file.
datasize default;
stacksize default;
coresize default;
files unlimited;
recursion yes;
fetch-glue yes;
fake-iquery no;
notify yes;
// send NOTIFY messages. You can set
// notify on a zone-by-zone
// basis in the "zone" statement
// see (below)
serial-queries 4;
// number of parallel SOA queries
// we can have outstanding for master
// zone change testing purposes
auth-nxdomain yes;
// always set AA on NXDOMAIN.
// don't set this to 'no' unless
// you know what you're doing -- older
// servers won't like it.
multiple-cnames no;
// if yes, then a name my have more
// than one CNAME RR. This use
// is non-standard and is not
// recommended, but it is available
// because previous releases supported
// it and it was used by large sites
// for load balancing.
allow-query { any; };
allow-transfer { any; };
transfers-in 10;
// DEFAULT_XFERS_RUNNING, cannot be
// set > than MAX_XFERS_RUNNING (20)
transfers-per-ns 2;
// DEFAULT_XFERS_PER_NS
transfers-out 0;
// not implemented
max-transfer-time-in 120;
// MAX_XFER_TIME; the default number
// of minutes an inbound zone transfer
// may run. May be set on a per-zone
// basis.
transfer-format one-answer;
query-source address * port *;
/*
* The "forward" option is only meaningful if you've defined
* forwarders. "first" gives the normal BIND
* forwarding behavior, i.e. ask the forwarders first, and if that
* doesn't work then do the full lookup. You can also say
* "forward only;" which is what used to be specified with
* "slave" or "options forward-only". "only" will never attempt
* a full lookup; only the forwarders will be used.
*/
forward first;
forwarders { };
// default is no forwarders
topology { localhost; localnets; };
// prefer local nameservers
listen-on port 53 { any; };
// listen for queries on port 53 on
// any interface on the system
// (i.e. all interfaces). The
// "port 53" is optional; if you
// don't specify a port, port 53
// is assumed.
/*
* Interval Timers
*/
cleaning-interval 60;
// clean the cache of expired RRs
// every 'cleaning-interval' minutes
interface-interval 60;
// scan for new or deleted interfaces
// every 'interface-interval' minutes
statistics-interval 60;
// log statistics every
// 'statistics-interval' minutes
maintain-ixfr-base no;
// If yes, keep transaction log file for IXFR
max-ixfr-log-size 20;
// Not implemented, maximum size the
// IXFR transaction log file to grow
};
/*
* Control listeners, for "ndc". Every nameserver needs at least one.
*/
controls {
inet * port 52 allow { any; };
// a bad idea
unix "/var/run/ndc" perm 0600 owner 0 group 0;
// the default
};
zone "rd.xxx.com" in {
type master;
// what used to be called "primary"
file "rd.xxx.com.db";
check-names fail;
allow-update { none; };
allow-transfer { any; };
allow-query { any; };
// notify yes;
// send NOTIFY messages for this
// zone? The global option is used
// if "notify" is not specified
// here.
also-notify { };
// don't notify any nameservers other
// than those on the NS list for this
// zone
};
zone "223.99.211.in-addr.arpa" in {
type master;
// what used to be called "secondary"
file "21.9.22.db";
};
zone "0.0.127.in-addr.arpa" in {
type master;
file "127.0.0.db";
};
zone "." in {
type hint;
// used to be specified w/ "cache"
file "named.root";
};
logging {
/*
* All log output goes to one or more "channels"; you can make as
* many of them as you want.
*/
channel syslog_errors {
// this channel will send errors or
syslog user;
// or worse to syslog (user facility)
severity error;
};
category parser {
syslog_errors;
// you can log to as many channels
default_syslog;
// as you want
};
category lame-servers { null; };
// don't log these at all
channel moderate_debug {
severity debug 3;
// level 3 debugging to file
file "foo";
// foo
print-time yes;
// timestamp log entries
print-category yes;
// print category name
print-severity yes;
// print severity level
/*
* Note that debugging must have been turned on either
* on the command line or with a signal to get debugging
* output (non-debugging output will still be written to
* this channel).
*/
};
/*
* If you don't want to see "zone XXXX loaded" messages but do
* want to see any problems, you could do the following.
*/
channel no_info_messages {
syslog;
severity notice;
};
category load { no_info_messages; };
/*
* You can also define category "default"; it gets used when no
* "category" statement has been given for a category.
*/
category default {
default_syslog;
moderate_debug;
};
};
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