SSH Module Installation on Strawberry Perl

Strawberry Perl doesn't come with SSH modules pre-installed. Here is how to insall
C:\>perl -MCPAN -e shell
cpan shell -- CPAN exploration and modules installation (v1.9304)
ReadLine support enabled
cpan> install Net::SSH
Fetching with LWP:
http://cpan.strawberryperl.com/authors/01mailrc.txt.gz
LWP failed with code[500] message[Can't connect to cpan.strawberryperl.com:80 (connect: timeout)]
As a last ressort we now switch to the external ftp command 'C:\WINDOWS\system32\ftp.EXE'
to get 'C:\strawberry\cpan\sources\authors\01mailrc.txt.gz.tmp3104'.
Doing so often leads to problems that are hard to diagnose.
If you're victim of such problems, please consider unsetting the ftp
config variable with
o conf ftp ""
o conf commit
I would like to connect to one of the following sites to get 'authors/01mailrc.txt.gz':
http://www.perl.org/CPAN/
ftp://ftp.perl.org/pub/CPAN/
Is it OK to try to connect to the Internet? [yes] yes
Fetching with LWP:
http://www.perl.org/CPAN/authors/01mailrc.txt.gz
LWP failed with code[500] message[Can't connect to www.perl.org:80 (connect: timeout)]
Fetching with LWP:
ftp://ftp.perl.org/pub/CPAN/authors/01mailrc.txt.gz
Fetching with LWP:
http://cpan.strawberryperl.com/modules/02packages.details.txt.gz
LWP failed with code[500] message[Can't connect to cpan.strawberryperl.com:80 (connect: timeout)]
Fetching with LWP:
http://www.cpan.org/modules/02packages.details.txt.gz
LWP failed with code[500] message[Can't connect to www.cpan.org:80 (connect: timeout)]
Fetching with LWP:
http://www.perl.org/CPAN/modules/02packages.details.txt.gz
LWP failed with code[500] message[Can't connect to www.perl.org:80 (connect: timeout)]
Fetching with LWP:
ftp://ftp.perl.org/pub/CPAN/modules/02packages.details.txt.gz
Fetching with LWP:
http://cpan.strawberryperl.com/modules/03modlist.data.gz
LWP failed with code[500] message[Can't connect to cpan.strawberryperl.com:80 (connect: timeout)]
Fetching with LWP:
http://www.cpan.org/modules/03modlist.data.gz
LWP failed with code[500] message[Can't connect to www.cpan.org:80 (connect: timeout)]
Fetching with LWP:
http://www.perl.org/CPAN/modules/03modlist.data.gz
LWP failed with code[500] message[Can't connect to www.perl.org:80 (connect: timeout)]
Fetching with LWP:
ftp://ftp.perl.org/pub/CPAN/modules/03modlist.data.gz
Creating database file ...
Gathering information from index files ...
Populating database tables ...
Done!
Running install for module 'Net::SSH'
Running make for I/IV/IVAN/Net-SSH-0.09.tar.gz
Fetching with LWP:
http://cpan.strawberryperl.com/authors/id/I/IV/IVAN/Net-SSH-0.09.tar.gz
LWP failed with code[500] message[Can't connect to cpan.strawberryperl.com:80 (connect: timeout)]
Fetching with LWP:
http://www.cpan.org/authors/id/I/IV/IVAN/Net-SSH-0.09.tar.gz
LWP failed with code[500] message[Can't connect to www.cpan.org:80 (connect: timeout)]
Fetching with LWP:
http://www.perl.org/CPAN/authors/id/I/IV/IVAN/Net-SSH-0.09.tar.gz
LWP failed with code[500] message[Can't connect to www.perl.org:80 (connect: timeout)]
Fetching with LWP:
ftp://ftp.perl.org/pub/CPAN/authors/id/I/IV/IVAN/Net-SSH-0.09.tar.gz
Fetching with LWP:
ftp://ftp.perl.org/pub/CPAN/authors/id/I/IV/IVAN/CHECKSUMS
Checksum for C:\strawberry\cpan\sources\authors\id\I\IV\IVAN\Net-SSH-0.09.tar.gz ok
Scanning cache C:\strawberry\cpan\build for sizes
DONE
CPAN.pm: Going to build I/IV/IVAN/Net-SSH-0.09.tar.gz
Checking if your kit is complete...
Looks good
Writing Makefile for Net::SSH
cp SSH.pm blib\lib\Net\SSH.pm
IVAN/Net-SSH-0.09.tar.gz
C:\strawberry\c\bin\dmake.EXE -- OK
Running make test
C:\strawberry\perl\bin\perl.exe "-Iblib\lib" "-Iblib\arch" test.pl
1..1
ok 1
IVAN/Net-SSH-0.09.tar.gz
C:\strawberry\c\bin\dmake.EXE test -- OK
Running make install
Prepending C:\strawberry\cpan\build\Net-SSH-0.09-cQfbZo/blib/arch C:\strawberry\cpan\build\Net-SSH-0
.09-cQfbZo/blib/lib to PERL5LIB for 'install'
Installing C:\strawberry\perl\site\lib\Net\SSH.pm
Appending installation info to C:\strawberry\perl\lib/perllocal.pod
IVAN/Net-SSH-0.09.tar.gz
C:\strawberry\c\bin\dmake.EXE install UNINST=1 -- OK
cpan>

Don’t forget data replication strategies

It is still important to decide on your data, server replication strategy when you deploy your core business services and data assets to an internal, external or hybrid cloud models.

Understanding the implications of Active Replication, Passive Replication, Hot Backup, Warm Backup, Cold Backup, State Change Synchronization, Load Balancing and Fault Tolerance are key to making essential choices for a solid deployment architecture on the cloud.

Elasticity, capacity flexibility, horizontal and vertical scalability and dynamic resource allocation makes life a lot easy on the cloud.

Active replication is not achieved by taking cold backups, state changes are not logged for periodic flushes to the replicas, state is not synchronized to only support backup replica when the primary fails. Instead each replica is identical, each replica attempts to process each request – an interceptor takes care of idem potency between replicas. If you want a Primary Service to support all incoming requests, and periodically synchronize its state with the replicas – what you have is a Warm Backup or Passive Replication.

Take a hot backup during times when you have low scalability needs on the RDBMS systems, whereas a cold backup should be reserved for “Sundays” or in the 70s. If you’re going to support the cloud – forger cold backups and start thinking CA (Continuous Availability).

Updating Grub 2 Config

Updating Grub 2 - 

If you want to change your grub configuration (reorder, change, remove etc) - there are TWO steps

1. Make The Change

2. Update Grub

 

For example, If you want to change the selected OS to boot from (usually the first one is selected by default).

rohit@lenovo:~$ sudo gedit /etc/default/grub 

rohit@lenovo:~$ sudo update-grub

Generating grub.cfg ...

The steps above, essentially means, I opened the grub file in a text editor, made changes and saved it. Then I ran update-grub to cement my changes. Done