Installation

AIX: upgrade to using Linux Tool Box packages via yum

Follow it if you have already installed oldc rpm package of RRDTool and Apache to the one using yum (Linux Tool Box)
It is typically when you have rrdtool 1.4.8 and Apache like 2.4.18.
To upgrade to the latest version,

Remove nearly all existing packages, in our test example it was:

rpm --nodeps -e libjpeg expat libiconv openssl zlib freetype2 gettext libdatrie libthai libXrender fontconfig libffi glib2 libpng libxcb xz libxml2 libcroco libart_lgpl lzo pixman atk jasper jbigkit jbigkit-libs libtiff gtk2 librsvg2 cairo pango gtk2 libdbi dejavu-sans-mono-fonts dejavu--lgc-sans-mono-fonts gdbm perl perl-TimeDate perl-XML-Simple perl-XML-Parser perl-URI perl-XML-SAX perl-XML-LibXML perl-XML-SAX-Base perl-XML-NamespaceSupport net-snmp-util net-snmp-perl perl-DBI dejavu-lgc-sans-mono-fonts perl-Net_SSLeay.pm xz-libs perl-Compress-Raw-Zlib net-snmp-utils unzip info gtk2-immodules db tcl net-snmp-utils ncurses libXpm pcre expect perl-DBD-Pg sudo libgcc perl-Want postgresql-libs lemon gts graphviz xorg-compat-aix python python-iniparse ca-certificates python-pycurl python-tools gettext gdbm tk gd wget perl-IO-Tty httpd sqlite net-snmp bzip2 perl-DBD-SQLite swig perl-Crypt-SSLeay vnc pkg-config readline lua pysqlite curl python-urlgrabber python-devel glib2

But it might vary in different environments, basically here is what could stay there:

rpm -qa
  lpar2rrd-agent-7.20-5.ppc
  yum-3.4.3-8.noarch
  AIX-rpm-7.1.4.30-4.ppc
  bash-3.0-1.ppc
  yum-metadata-parser-1.1.4-2.ppc

You can even use this script to remove everything public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/contrib/destroyRPMS
Then install rpm base
```
./destroyRPMS
installp -YqacXFd rpm.rte.4.15.1.1006 all
```
AIX 7.3 DNF support, get this: https://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/ezinstall/ppc/dnf_aixtoolbox.sh
```
./dnf_aixtoolbox.sh -d
dnf update
```
Activate yum as per IBM procedure, download "yum.sh" and run it, then run this:
```
updtvpkg
```

Install as per AIX yum install

yum install httpd rrdtool rrdtool-perl
yum install net-snmp net-snmp-utils net-snmp-perl

Make sure installated package is working, it should not proint any error (rrdtool 1.7.2 might print an error, check Troubleshooting section)
```
/opt/freeware/bin/rrdtool_32 -v
/opt/freeware/bin/rrdtool -v
```

Apache configuration, append into /opt/freeware/etc/httpd/conf/httpd.conf this:

vi /opt/freeware/etc/httpd/conf/httpd.conf

Enable CGI (it is hashed by default):

<IfModule mpm_prefork_module>
        LoadModule cgi_module /opt/freeware/lib/httpd/modules/mod_cgi.so
</IfModule>

Add this:

# LPAR2RRD
LoadModule cgi_module /opt/freeware/lib/httpd/modules/mod_cgi.so
Alias /lpar2rrd  "/home/lpar2rrd/lpar2rrd/www/"
<Directory "/home/lpar2rrd/lpar2rrd/www/">
    Options Indexes FollowSymLinks Includes MultiViews
    Require all granted
</Directory>

# CGI-BIN
ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/"
<Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi">
    AllowOverride None
    SetHandler cgi-script
    Options ExecCGI Includes FollowSymLinks
    Require all granted
</Directory>


# STOR2RRD
Alias /stor2rrd  "/home/stor2rrd/stor2rrd/www/"
<Directory "/home/stor2rrd/stor2rrd/www/">
    Options Indexes FollowSymLinks Includes MultiViews
    Require all granted
</Directory>

# CGI-BIN
ScriptAlias /stor2rrd-cgi/ "/home/stor2rrd/stor2rrd/stor2rrd-cgi/"
<Directory "/home/stor2rrd/stor2rrd/stor2rrd-cgi">
    AllowOverride None
    SetHandler cgi-script
    Options ExecCGI Includes FollowSymLinks
    Require all granted
</Directory>

Apache restart:

/opt/freeware/sbin/apachectl restart

Change LPAR2RRD/STOR2RRD parameters:
Definitelly use /usr/bin/perl and 32bit rrdtool: /opt/freeware/bin/rrdtool_32

LPAR2RRD: edit /home/lpar2rrd/lpar2rrd/etc/lpar2rrd.cfg

RRDTOOL=/opt/freeware/bin/rrdtool_32
PERL=/usr/bin/perl
PERL5LIB=/home/lpar2rrd/lpar2rrd/bin:/home/lpar2rrd/lpar2rrd/lib:/opt/freeware/lib/perl5/5.34/vendor_perl:/opt/freeware/lib64/perl5/5.34/vendor_perl:/opt/freeware/lib/perl5/5.38/vendor_perl:/opt/freeware/lib64/perl5/5.38/vendor_perl

STOR2RRD: edit /home/stor2rrd/stor2rrd/etc/stor2rrd.cfg

RRDTOOL=/opt/freeware/bin/rrdtool_32
PERL=/usr/bin/perl
PERL5LIB=/home/stor2rrd/stor2rrd/bin:/home/stor2rrd/stor2rrd/lib:/opt/freeware/lib/perl5/5.34/vendor_perl:/opt/freeware/lib64/perl5/5.34/vendor_perl:/opt/freeware/lib/perl5/5.38/vendor_perl:/opt/freeware/lib64/perl5/5.38/vendor_perl

Adjust above PERL5LIB path based on which Perl you have in /opt/freeware/bin/perl, above example works for "5.34" and "5.38", you see it in the paths:

# /opt/freeware/bin/perl -v| head -2

This is perl 5, version 34, subversion 1 (v5.34.1) built for ppc-aix-thread-multi-64all

Make sure that it is correct, it should not produce any output

cd /home/stor2rrd/stor2rrd
 . etc/stor2rrd.cfg; $PERL bin/perl_modules_check.pl

Troubleshooting

In some cases is necessary to set LIBPATH, do not do it unless you see such error during load.sh

Can't load '/usr/opt/perl5/lib/site_perl/5.28.1/aix-thread-multi/auto/XML/Parser/Expat/Expat.so' for module XML::Parser::Expat: Could not load module /usr/opt/perl5/lib/site_perl/5.28.1/aix-thread-multi/auto/XML/Parser/Expat/Expat.so

or this one:

Could not load module /opt/freeware/lib/libcairo.a(libcairo.so.2).
        Dependent module /usr/lib/libXrender.a(libXrender.so.1) could not be loaded.
        Member libXrender.so.1 is not found in archive
Could not load module rrdtool_64.
        Dependent module /opt/freeware/lib/libcairo.a(libcairo.so.2) could not be loaded.

In both cases:

su - lpar2rrd
cd /home/lpar2rrd/lpar2rrd
umask 022
echo "export LIBPATH=/opt/freeware/lib" >> etc/.magic

RRDTOOL 1.7.2 problem (only 32bit one)

/opt/freeware/bin/rrdtool_32 -v
  exec(): 0509-036 Cannot load program /opt/freeware/bin/rrdtool_32 because of the following errors:
  0509-130 Symbol resolution failed for /opt/freeware/lib/libpangocairo-1.0.a(libpangocairo-1.0.so.0) because:
  0509-136 Symbol __dbargs (number 185) is not exported from
  dependent module /opt/freeware/lib/libpixman-1.a(libpixman-1.so.0).
  0509-136 Symbol __dbsubc (number 186) is not exported from
  dependent module /opt/freeware/lib/libpixman-1.a(libpixman-1.so.0).
  0509-136 Symbol __dbsubg (number 187) is not exported from
  dependent module /opt/freeware/lib/libpixman-1.a(libpixman-1.so.0).
  0509-136 Symbol __dbsubn (number 188) is not exported from
  dependent module /opt/freeware/lib/libpixman-1.a(libpixman-1.so.0).
  0509-192 Examine .loader section symbols with the
  'dump -Tv' command.

Fix it by removing "pixman" package, ignore dependencies

yum erase pixman