Install the perl module in CentOS 5 to support IPV6

Install the perl module in CentOS 5 to support IPV6

LWP: UserAgent is used in our product for http requests in perl code. The test shows that the following error is returned in a pure V6 environment:

Can't connect to [2001: db8: 0: 1: 10: 208: 135: 232]: 8002 (Bad hostname '[2001: db8: 0: 1: 10: 208: 135: 232] ')

After investigation, we found that some perl applications depend on IO: Socket: INET. Because this module itself does not support IPV6, some work may be required in a pure V6 environment to work. Search for CPAN, and the module Net: INET6Glue: INET_is_INET6 provides a solution to this problem. You only need to reference it in the application code.

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1. UseNet: INET6Glue: INET_is_INET6;

However, the latest version of perl in CentOS 5 is 5.8.8. This module is not available by default. The following question is how to install it?

If there is a network environment, such as on the Development machine, the simplest way is to install it directly from CPAN. The command in shell is as follows:

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1. CpanApp: cpanminus
2. CpanmNet: INET6Glue: INET_is_INET6

The first command will be executed for a long time. Please wait patiently and you will be asked y/n in the middle. All are default.

After the second command is executed, the dependency modules installed at the same time are displayed:

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1. Fetchinghttp: // www.cpan.org/authors/id/S/SU/SULLR/Net-INET6Glue-0.603.tar.gz... OK
2. ConfiguringNet-INET6Glue-0.603... OK
3. ==> Founddependencies: IO: Socket: IP
4. --> WorkingonIO: Socket: IP
5. Fetchinghttp: // www.cpan.org/authors/id/P/PE/PEVANS/IO-Socket-IP-0.37.tar.gz... OK
6. ConfiguringIO-Socket-IP-0.37... OK
7. ==> Founddependencies: Socket
8. --> WorkingonSocket
9. Fetchinghttp: // www.cpan.org/authors/id/P/PE/PEVANS/Socket-2.018.tar.gz... OK
10. ==> Founddependencies: ExtUtils: Constant
11. --> WorkingonExtUtils: Constant
12. Fetchinghttp: // www.cpan.org/authors/id/n/nw/nwclark/extutils-constant-0.23.tar.gz.. OK
13. ConfiguringExtUtils-Constant-0.16... OK
14. BuildingandtestingExtUtils-Constant-0.23... OK
15. SuccessfullyinstalledExtUtils-Constant-0.23 (upgradedfrom0.17)
16. ConfiguringSocket-2.018... OK
17. BuildingandtestingSocket-2.018... OK
18. SuccessfullyinstalledSocket-2.018 (upgradedfrom1.78)
19. BuildingandtestingIO-Socket-IP-0.37... OK
20. SuccessfullyinstalledIO-Socket-IP-0.37
21. BuildingandtestingNet-INET6Glue-0.603... OK
22. SuccessfullyinstalledNet-INET6Glue-0.603
23. 4 distributionsinstalled

In the product, you need to make the perl module rpm for installation. Search for a convenient tool: cpan 2rpm, which can be downloaded from CPAN.

The following is the tgz package. If you install it through make, the command will report the following error:

Can't locate object method "interpolate" via package "Pod: Text" at./cpan 2rpm line 519.

The reason is that the interpolate Method in Pod: Text has been migrated to the Pod: Parser module. Replace Pod: Text in the Code with Pod: Parser, then make and make install are OK.

After cpan 2rpm is installed, you can turn the Net: INET6Glue: INET_is_INET6 module and its dependencies into rpm. The steps are as follows:

1. Download tgz (including dependencies). From the above installation process, we can see that there are three dependencies: ExtUtils-Constant, Socket, and IO-Socket-IP. Take ExtUtils-Constant as an example:

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1. Wgethttp: // www.cpan.org/authors/id/N/NW/NWCLARK/ExtUtils-Constant-0.23.tar.gz

2. Run cpan 2rpm [plain] view plaincopy

1. Cpan 2rpm -- no-sign./ExtUtils-Constant-0.23.tar.gz

The result is as follows: [plain] view plaincopy

1. -- Cpan2rpm-Ver: 2.028 --
2. Upgradecheck
3. Fetch: HTTP
5. -- Module:./ExtUtils-Constant-0.23.tar.gz --
6. Metadataretrieval
7. ...
8. ...
9. + Umask022
10. + Cd/usr/src/redhat/BUILD
11. + Rm-rfExtUtils-Constant-0.23
12. + Exit0
13. RPM:/usr/src/redhat/RPMS/noarch/perl-ExtUtils-Constant-0.23-1.noarch.rpm
14. SRPM:/usr/src/redhat/SRPMS/perl-ExtUtils-Constant-0.23-1.src.rpm
15. -- Done --

The required rpm and source rpm are generated.

Done!

In fact, cpan 2rpm does not have to download the tgz package first, as long as you replace the above file name with the module name.

In addition, it is estimated that cpan 2rpm has not been maintained for a long time, and the following problems have been encountered during compilation of different rpms, and the patch is released together.

Error 1:

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1. Get_meta (): Notadirectoryat/usr/bin/cpan2rpmline396.

Patch:

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1. Diff-rucpan2rpm-2.028/cpan2rpmcpan2rpm-new/cpan 2rpm
2. --- Cpan2rpm-2.028/cpan2rpm2005-06-1722: 06: 54.000000000-0700
3. + + Cpan2rpm-new/cpan2rpm2005-06-3009: 35: 49.000000000-0700
4. @-26,6 + 26, 7 @@
6. Usestrict;
7. Usewarnings;
8. + UseFile: Basename;
9. UseGetopt: Long;
10. UseSys: Hostname;
11. UsePod: Text;
12. @-387,6 + 388, 9 @@
13. $ Info-> {buildarch} = "noarch" if $ xs = 0;
14. }
16. + If (not-d $ info-> {evaldir }){
17. + $ Info-> {evaldir} = dirname ($ info-> {evaldir });
18. +}
19. Chdir $ info-> {evaldir} | die "get_meta (): $! ";
21. $ _ = "$ Info-> {evaldir}/Build. PL ";

Error 2:

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1. /Usr/lib/rpm/brp-compress: line8: cd:/var/tmp/perl-Crypt-Random-Source-0.10-root: Nosuchfileordirectory

Patch:

Add "--" to the front of destdir in Row 3.

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1. $ Info-> {"make-install" }= "-- destdir = % {buildroot }"