Redis cluster installation failure on RHEL

[Santos Das]

Hi,

I am setting up the redis-cluster on RHEL and it fails;

[root@redhat-# uname -a

Linux redhat- 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux

[root@redhat-0 /]#

./src/redis-trib.rb create --replicas 1 x.x.x.x:7000 x.x.x.x:7001 x.x.x.x:7002 x.x.x.x:7003 x.x.x.x:7004 x.x.x.x:7005

/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError)

        from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'

        from ./src/redis-trib.rb:25:in `<main>'

 

[root@redhat-10-37-14-30 /]# ruby -v

ruby 2.0.0p648 (2015-12-16) [x86_64-linux]

[root@redhat-10-37-14-30 /]#

 sudo yum install ruby ruby-devel rubygems rpm-build

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

Package ruby-2.0.0.648-29.el7.x86_64 already installed and latest version

No package ruby-devel available.

Package rubygems-2.0.14.1-29.el7.noarch already installed and latest version

Package rpm-build-4.11.3-21.el7.x86_64 already installed and latest version

Nothing to do

 

[Jan-Erik Rediger]

You need to install the redis rubygem

gem install redis

On Thu, Jun 08, 2017 at 12:28:08PM -0700, Santos Das wrote:
> Hi,
>
> I am setting up the redis-cluster on RHEL and it fails;
>
>
> [root@redhat-# uname -a
> Linux redhat- 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015
> x86_64 x86_64 x86_64 GNU/Linux
> [root@redhat-0 /]#
>
>
> ./src/redis-trib.rb create --replicas 1 x.x.x.x:7000 x.x.x.x:7001
> x.x.x.x:7002 x.x.x.x:7003 x.x.x.x:7004 x.x.x.x:7005
>
> /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require':
> cannot load such file -- redis (LoadError)
>
> from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in
> `require'
>
> from ./src/redis-trib.rb:25:in `<main>'
>
>
>
>
>
> [root@redhat-10-37-14-30 /]# ruby -v
>
> ruby 2.0.0p648 (2015-12-16) [x86_64-linux]
>
> [root@redhat-10-37-14-30 /]#
>
>
>
> sudo yum install ruby ruby-devel rubygems rpm-build
>
>
> Loaded plugins: langpacks, product-id, search-disabled-repos,
> subscription-manager
>
>
> This system is not registered to Red Hat Subscription Management. You can
> use subscription-manager to register.
>
>
> Package ruby-2.0.0.648-29.el7.x86_64 already installed and latest version
>
>

> No package *ruby-devel* available.

>
>
> Package rubygems-2.0.14.1-29.el7.noarch already installed and latest version
>
>
> Package rpm-build-4.11.3-21.el7.x86_64 already installed and latest version
>
> Nothing to do
>
>
>

> --
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[Santos Das]

Have done that already:

sudo yum install redis

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

Package redis-3.2.3-1.el7.x86_64 already installed and latest version

Nothing to do

[Jan-Erik Rediger]

No, you installed the Redis server through your system's package
manager.

redis-trib, the administration tool for Redis Cluster, is written in
Ruby and requires a Redis client library written in Ruby.
Rubygem is the Ruby packet manager used to install ruby libraries.

Therefore, either use rubygems to install the redis rubygem or check if
yum has a ruby-redis (or similar) package

> > No package *ruby-devel* available.

> >
> >
> > Package rubygems-2.0.14.1-29.el7.noarch already installed and latest
> > version
> >
> >
> > Package rpm-build-4.11.3-21.el7.x86_64 already installed and latest version
> >
> > Nothing to do
> >
> >
> >
>

[Santos Das]

Hi,

I am looking at redis-stable/src/redis-trib.rb

it seems, it fails in "require redis"

require 'rubygems'

require 'redis'

src/redis-trib.rb create --replicas 1 10.37.14.30:7000 10.37.14.30:7001 10.37.14.30:7002 10.37.14.30:7003 10.37.14.30:7004 10.37.14.30:7005

/usr/local/share/ruby/site_ruby/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError)

        from /usr/local/share/ruby/site_ruby/rubygems/core_ext/kernel_require.rb:55:in `require'

        from src/redis-trib.rb:25:in `<main>'

sudo yum install rubygems

Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager

Package rubygems-2.0.14.1-29.el7.noarch already installed and latest version

Nothing to do

On Friday, June 9, 2017 at 12:58:09 AM UTC+5:30, Santos Das wrote:

[hva...@gmail.com]

You ran the command:

sudo yum install rubygems

but janerik advised you to run the command:

gem install redis

Please don't be confused by the name "redis" in the command "gem install redis".  The command does not install the Redis server software.  It installs a Redis client designed for the Ruby language.  The client is named "redis" rather than "redis-client".

  -Greg

[Santos Das]

Thank you Greg. I was succesfully setup the cluster on RHEL now.

On Friday, June 9, 2017 at 12:58:09 AM UTC+5:30, Santos Das wrote: