Installing up-to-date version of Erlang on RHEL7
I'm trying to install an up to date (version 20.3 at the moment of the writing) Erlang distribution into RHEL7 (release 7.5 to be exact).
Google tells me the up-to-date Erlang distribution is maintained by Erlang Solutions at https://packages.erlang-solutions.com/ (thanks!)
There you also find instructions how to add the repository so that the Erlang can be installed with a package manager:
Installation using repository
- Adding repository entry
To add Erlang Solutions repository (including our public key for verifying signed package) to your system, call the following commands:
wget https://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm rpm -Uvh erlang-solutions-1.0-1.noarch.rpm
However if I run the commands (I run the rpm command as a root) no Erlang Solutions repo is added to yum repolist. Is RHEL7 different to Centos or are the instructions faulty or what I'm doing wrong ?
The Erlang Solutions repo (and the installation instructions) is referenced also from
Answer
I found the root cause and was able to install Erlang from Erlang Solutions repository.
The root cause was that $releasever is different in RHEL than in Centos and therefore the variable can't be used but has to be changed to a hardcoded value.
The following is a detailed steps how to setup yum so that Erlang and it's dependencies can be installed from Erlang Solutions and EPEL repositories with yum.
Add the following Erlang Solutions repository file:
[root@red ~]# cat /etc/yum.repos.d/erlang-solutions.repo
[erlang-solutions]
name=CentOS $releasever - $basearch - Erlang Solutions
baseurl=https://packages.erlang-solutions.com/rpm/centos/7/$basearch
enabled=1
gpgcheck=1
gpgkey=https://packages.erlang-solutions.com/rpm/erlang_solutions.asc
[root@red ~]#
Note that baseurl had to be changed from
https://packages.erlang-solutions.com/rpm/centos/$releasever/$basearch
to
https://packages.erlang-solutions.com/rpm/centos/7/$basearch
Add EPEL repository too for dependecies required by Erlang (wxBase, wxGTK, wxGTK-gl):
[root@red ~]# rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
Repolist looks now:
[root@red ~]# yum repolist
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
repo id repo name status
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 12,517
erlang-solutions/x86_64 CentOS 7Server - x86_64 - Erlang Solutions 992
rhel-7-server-extras-rpms/x86_64 Red Hat Enterprise Linux 7 Server - Extras (RPMs) 814
rhel-7-server-optional-rpms/7Server/x86_64 Red Hat Enterprise Linux 7 Server - Optional (RPMs) 14,947
rhel-7-server-rpms/7Server/x86_64 Red Hat Enterprise Linux 7 Server (RPMs) 20,120
rhel-7-server-rt-rpms/7Server/x86_64 Red Hat Enterprise Linux for Real Time (RHEL 7 Server) (RPMs) 281
rhel-server-rhscl-7-rpms/7Server/x86_64 Red Hat Software Collections RPMs for Red Hat Enterprise Linux 9,961
repolist: 59,632
[root@red ~]#
Erlang package is available !
[root@red ~]# yum info erlang
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
Available Packages
Name : erlang
Arch : x86_64
Version : 20.3
Release : 1.el7.centos
Size : 17 k
Repo : erlang-solutions/x86_64
Summary : General-purpose programming language and runtime environment
URL : http://www.erlang.org
License : ERPL
Description : Erlang is a general-purpose programming language and runtime
: environment. Erlang has built-in support for concurrency, distribution
: and fault tolerance. Erlang is used in several large telecommunication
: systems from Ericsson.
[root@red ~]#
And finally you can install Erlang with yum -y install erlang.
The following packages from several different repositories were installed:
================================================================================================================
Package Arch Version Repository Size
================================================================================================================
Installing:
erlang x86_64 20.3-1.el7.centos erlang-solutions 17 k
Installing for dependencies:
SDL x86_64 1.2.15-14.el7 rhel-7-server-rpms 204 k
erlang-asn1 x86_64 20.3-1.el7.centos erlang-solutions 928 k
erlang-common_test x86_64 20.3-1.el7.centos erlang-solutions 1.3 M
erlang-compiler x86_64 20.3-1.el7.centos erlang-solutions 1.4 M
erlang-cosEvent x86_64 20.3-1.el7.centos erlang-solutions 170 k
erlang-cosEventDomain x86_64 20.3-1.el7.centos erlang-solutions 137 k
erlang-cosFileTransfer x86_64 20.3-1.el7.centos erlang-solutions 200 k
erlang-cosNotification x86_64 20.3-1.el7.centos erlang-solutions 842 k
erlang-cosProperty x86_64 20.3-1.el7.centos erlang-solutions 188 k
erlang-cosTime x86_64 20.3-1.el7.centos erlang-solutions 124 k
erlang-cosTransactions x86_64 20.3-1.el7.centos erlang-solutions 196 k
erlang-crypto x86_64 20.3-1.el7.centos erlang-solutions 212 k
erlang-debugger x86_64 20.3-1.el7.centos erlang-solutions 468 k
erlang-dialyzer x86_64 20.3-1.el7.centos erlang-solutions 838 k
erlang-diameter x86_64 20.3-1.el7.centos erlang-solutions 835 k
erlang-edoc x86_64 20.3-1.el7.centos erlang-solutions 366 k
erlang-eldap x86_64 20.3-1.el7.centos erlang-solutions 125 k
erlang-erl_docgen x86_64 20.3-1.el7.centos erlang-solutions 156 k
erlang-erl_interface x86_64 20.3-1.el7.centos erlang-solutions 263 k
erlang-erts x86_64 20.3-1.el7.centos erlang-solutions 2.0 M
erlang-et x86_64 20.3-1.el7.centos erlang-solutions 189 k
erlang-eunit x86_64 20.3-1.el7.centos erlang-solutions 185 k
erlang-examples x86_64 20.3-1.el7.centos erlang-solutions 1.0 M
erlang-hipe x86_64 20.3-1.el7.centos erlang-solutions 3.2 M
erlang-ic x86_64 20.3-1.el7.centos erlang-solutions 1.0 M
erlang-inets x86_64 20.3-1.el7.centos erlang-solutions 921 k
erlang-jinterface x86_64 20.3-1.el7.centos erlang-solutions 179 k
erlang-kernel x86_64 20.3-1.el7.centos erlang-solutions 1.3 M
erlang-megaco x86_64 20.3-1.el7.centos erlang-solutions 6.0 M
erlang-mnesia x86_64 20.3-1.el7.centos erlang-solutions 915 k
erlang-observer x86_64 20.3-1.el7.centos erlang-solutions 980 k
erlang-odbc x86_64 20.3-1.el7.centos erlang-solutions 87 k
erlang-orber x86_64 20.3-1.el7.centos erlang-solutions 1.1 M
erlang-os_mon x86_64 20.3-1.el7.centos erlang-solutions 135 k
erlang-otp_mibs x86_64 20.3-1.el7.centos erlang-solutions 33 k
erlang-parsetools x86_64 20.3-1.el7.centos erlang-solutions 208 k
erlang-public_key x86_64 20.3-1.el7.centos erlang-solutions 689 k
erlang-reltool x86_64 20.3-1.el7.centos erlang-solutions 404 k
erlang-runtime_tools x86_64 20.3-1.el7.centos erlang-solutions 253 k
erlang-sasl x86_64 20.3-1.el7.centos erlang-solutions 342 k
erlang-snmp x86_64 20.3-1.el7.centos erlang-solutions 1.9 M
erlang-ssh x86_64 20.3-1.el7.centos erlang-solutions 630 k
erlang-ssl x86_64 20.3-1.el7.centos erlang-solutions 969 k
erlang-stdlib x86_64 20.3-1.el7.centos erlang-solutions 3.2 M
erlang-syntax_tools x86_64 20.3-1.el7.centos erlang-solutions 493 k
erlang-tools x86_64 20.3-1.el7.centos erlang-solutions 638 k
erlang-typer x86_64 20.3-1.el7.centos erlang-solutions 28 k
erlang-wx x86_64 20.3-1.el7.centos erlang-solutions 4.7 M
erlang-xmerl x86_64 20.3-1.el7.centos erlang-solutions 1.1 M
mesa-libGLU x86_64 9.0.0-4.el7 rhel-7-server-rpms 196 k
unixODBC x86_64 2.3.1-11.el7 rhel-7-server-rpms 413 k
wxBase x86_64 2.8.12-20.el7 epel 588 k
wxGTK x86_64 2.8.12-20.el7 epel 2.9 M
wxGTK-gl x86_64 2.8.12-20.el7 epel 34 k
Transaction Summary
================================================================================================================
Install 1 Package (+54 Dependent packages)
Enjoy your leading edge toochain !
[jani@red ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.5 (Maipo)
[jani@red ~]$ erl
Erlang/OTP 20 [erts-9.3] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [hipe] [kernel-poll:false]
Eshell V9.3 (abort with ^G)
1>
RabbitMQ installation instructions says it's a good idea to lock installed erlang version. See How to restrict yum to install or upgrade a package to a fixed specific package version?
[root@red ~]# yum -y install yum-plugin-versionlock
[...]
[root@red ~]# yum versionlock erlang wxBase wxGTK wxGTK-gl
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager, versionlock
Adding versionlock on: 0:wxGTK-2.8.12-20.el7
Adding versionlock on: 0:wxGTK-gl-2.8.12-20.el7
Adding versionlock on: 0:wxBase-2.8.12-20.el7
Adding versionlock on: 0:erlang-20.3-1.el7.centos
versionlock added: 4
[root@red ~]#