How to break…downgrade EA4 to EA3

Due to unpopular demand, I’ll show you how to downgrade to an unsupported version of cpanel’s panel software. You will basically, need a donor ea3 system.

Step 1: Grab cold beer from work fridge

Step 2: Get a copy of /scripts/migrate_ea3_to_ea4 (I have a copy still but cpanel has been nuking them)

Step 3: Copy missing cpanel perl modules and software from the donor ea3 system to the following directories:

• /usr/local/cpanel/Cpanel/CPAN/ (following perl modules needed)

Only in /backup/CPAN: Algorithm
Only in /backup/CPAN: base
Only in /backup/CPAN: Data
Only in /backup/CPAN: Digest
Only in /backup/CPAN: Encoding
Only in /backup/CPAN: File
Only in /backup/CPAN: HTML
Only in /backup/CPAN: MIME
Only in /backup/CPAN: Module
Only in /backup/CPAN: Params
Only in /backup/CPAN: String
Only in /backup/CPAN: Template
Only in /backup/CPAN: Text
Only in /backup/CPAN: Umask
Only in /backup/CPAN: URI
Only in /backup/CPAN: URI.pm
Only in /backup/CPAN: XML
Only in /backup/CPAN: YAML

• /usr/local/cpanel/Cpanel/CPAN/EA4{EA3Map.pm, Util.pm}
• /var/cpanel/perl/easy
• /usr/local/cpanel/Cpanel/ (following perl modules needed)

Only in /backup/Cpanel: AppCatalog
Only in /backup/Cpanel: Atom
Only in /backup/Cpanel: Bytes.pm
Only in /backup/Cpanel: CleanHtml.pm
Only in /backup/Cpanel: Client.pm
Only in /backup/Cpanel: Counters.pm
Only in /backup/Cpanel: cPpkgversions.pm
Only in /backup/Cpanel: cPQuota.pm
Only in /backup/Cpanel: DomainTools.pm
Only in /backup/Cpanel: EasyApache.pm
Only in /backup/Cpanel: Encoder.pm
Only in /backup/Cpanel: EntrySpool.pm
Only in /backup/Cpanel: EntrySpool.pod
Only in /backup/Cpanel: EximStats.pm
Only in /backup/Cpanel: FastInstall.pm
Only in /backup/Cpanel: Installer.pm
Only in /backup/Cpanel: lib.pm
Only in /backup/Cpanel: LVEInfo.pm
Only in /backup/Cpanel: MD5
Only in /backup/Cpanel: RpmUtils.pm
Only in /backup/Cpanel: SpamAssassinSandBox.pm
Only in /backup/Cpanel: StandIn
Only in /backup/Cpanel: StatCache
Only in /backup/Cpanel: StringFunc.pod
Only in /backup/Cpanel: SysCmdRC.pm
Only in /backup/Cpanel: Thirdparty.pm
Only in /backup/Cpanel: Tomcat.pm
Only in /backup/Cpanel: Utils.pm
Only in /backup/Cpanel: XMLParser_ExtPerlMod.pm

Step 4: run /scripts/migrate_ea3_to_ea4 –revert –run

Et voila! Most likely httpd is uninstalled so all your sites are down.

Step 5: run /scripts/upcp then copy and run /scripts/easyapache

Step 5a: when it fails, cd /home/cpeasyapache/src/httpd-2.4, make, make install.

Step 5b: run /scripts/easyapache again

Congrats. You have an ea3 server and outdated cpanel software again because you are stubborn and retroactive.