Chapter 1. Red Hat Software Collections 3.3
This chapter serves as an overview of the Red Hat Software Collections 3.3 content set. It provides a list of components and their descriptions, sums up changes in this version, documents relevant compatibility information, and lists known issues.
1.1. About Red Hat Software Collections
For certain applications, more recent versions of some software components are often needed in order to use their latest new features. Red Hat Software Collections is a Red Hat offering that provides a set of dynamic programming languages, database servers, and various related packages that are either more recent than their equivalent versions included in the base Red Hat Enterprise Linux system, or are available for this system for the first time.
Red Hat Software Collections 3.3 is be available for Red Hat Enterprise Linux 7; selected new components and previously released components also for Red Hat Enterprise Linux 6. For a complete list of components that are distributed as part of Red Hat Software Collections and a brief summary of their features, see Section 1.2, “Main Features”.
Red Hat Software Collections does not replace the default system tools provided with Red Hat Enterprise Linux 6 or Red Hat Enterprise Linux 7. Instead, a parallel set of tools is installed in the
/opt/
directory and can be optionally enabled per application by the user using the supplied scl
utility. The default versions of Perl or PostgreSQL, for example, remain those provided by the base Red Hat Enterprise Linux system.
All Red Hat Software Collections components are fully supported under Red Hat Enterprise Linux Subscription Level Agreements, are functionally complete, and are intended for production use. Important bug fix and security errata are issued to Red Hat Software Collections subscribers in a similar manner to Red Hat Enterprise Linux for at least two years from the release of each major version. In each major release stream, each version of a selected component remains backward compatible. For detailed information about length of support for individual components, refer to the Red Hat Software Collections Product Life Cycle document.
1.1.1. Red Hat Developer Toolset
Red Hat Developer Toolset is a part of Red Hat Software Collections, included as a separate Software Collection. For more information about Red Hat Developer Toolset, refer to the Red Hat Developer Toolset Release Notes and the Red Hat Developer Toolset User Guide.
1.2. Main Features
Table 1.1, “Red Hat Software Collections 3.3 Components” lists components that are supported at the time of the Red Hat Software Collections 3.3 release.
Component | Software Collection | Description |
---|---|---|
Red Hat Developer Toolset 8.1 | devtoolset-8 | Red Hat Developer Toolset is designed for developers working on the Red Hat Enterprise Linux platform. It provides current versions of the GNU Compiler Collection, GNU Debugger, and other development, debugging, and performance monitoring tools. For a complete list of components, see the Red Hat Developer Toolset Components table in the Red Hat Developer Toolset User Guide. |
Perl 5.24.0 | rh-perl524 | A release of Perl, a high-level programming language that is commonly used for system administration utilities and web programming. The rh-perl524 Software Collection provides additional utilities, scripts, and database connectors for MySQL and PostgreSQL. It includes the DateTime Perl module and the mod_perl Apache httpd module, which is supported only with the httpd24 Software Collection. Additionally, it provides the cpanm utility for easy installation of CPAN modules. |
Perl 5.26.3[a] | rh-perl526 | A release of Perl, a high-level programming language that is commonly used for system administration utilities and web programming. The rh-perl526 Software Collection provides additional utilities, scripts, and database connectors for MySQL and PostgreSQL. It includes the DateTime Perl module and the mod_perl Apache httpd module, which is supported only with the httpd24 Software Collection. Additionally, it provides the cpanm utility for easy installation of CPAN modules. The rh-perl526 packaging is aligned with upstream; the perl526-perl package installs also core modules, while the interpreter is provided by the perl-interpreter package. |
PHP 7.0.27 | rh-php70 | A release of PHP 7.0 with PEAR 1.10, enhanced language features and performance improvement. |
PHP 7.1.8 [a] | rh-php71 | A release of PHP 7.1 with PEAR 1.10, APCu 5.1.8, and enhanced language features. |
PHP 7.2.10 [a] | rh-php72 | A release of PHP 7.2 with PEAR 1.10.5, APCu 5.1.12, and enhanced language features. |
Python 2.7.16 | python27 | A release of Python 2.7 with a number of additional utilities. This Python version provides various features and enhancements, including an ordered dictionary type, faster I/O operations, and improved forward compatibility with Python 3. The python27 Software Collections contains the Python 2.7.13 interpreter, a set of extension libraries useful for programming web applications and mod_wsgi (only supported with the httpd24 Software Collection), MySQL and PostgreSQL database connectors, and numpy and scipy. |
Python 3.6.3 | rh-python36 | The rh-python36 Software Collection contains Python 3.6.3, which introduces a number of new features, such as f-strings, syntax for variable annotations, and asynchronous generators and comprehensions. In addition, a set of extension libraries useful for programming web applications is included, with mod_wsgi (supported only together with the httpd24 Software Collection), PostgreSQL database connector, and numpy and scipy. |
Ruby 2.4.6 | rh-ruby24 | A release of Ruby 2.4. This version provides multiple performance improvements and enhancements, for example improved hash table, new debugging features, support for Unicode case mappings, and support for OpenSSL 1.1.0. Ruby 2.4.0 maintains source-level backward compatibility with Ruby 2.3, Ruby 2.2, Ruby 2.0.0, and Ruby 1.9.3. |
Ruby 2.5.5 [a] | rh-ruby25 | A release of Ruby 2.5. This version provides multiple performance improvements and new features, for example, simplified usage of blocks with the rescue , else , and ensure keywords, a new yield_self method, support for branch coverage and method coverage measurement, new Hash#slice and Hash#transform_keys methods. Ruby 2.5.0 maintains source-level backward compatibility with Ruby 2.4. |
Ruby 2.6.2 [a] | rh-ruby26 | A release of Ruby 2.6. This version provides multiple performance improvements and new features, such as endless ranges, the Binding#source_location method, and the $SAFE process global state. Ruby 2.6.0 maintains source-level backward compatibility with Ruby 2.5. |
Ruby on Rails 5.0.1 | rh-ror50 | A release of Ruby on Rails 5.0, the latest version of the web application framework written in the Ruby language. Notable new features include Action Cable, API mode, exclusive use of rails CLI over Rake, and ActionRecord attributes. This Software Collection is supported together with the rh-ruby24 Collection. |
Scala 2.10.6 [a] | rh-scala210 | A release of Scala, a general purpose programming language for the Java platform, which integrates features of object-oriented and functional languages. |
MariaDB 10.2.22 | rh-mariadb102 | A release of MariaDB, an alternative to MySQL for users of Red Hat Enterprise Linux. For all practical purposes, MySQL is binary compatible with MariaDB and can be replaced with it without any data conversions. This version adds MariaDB Backup, Flashback, support for Recursive Common Table Expressions, window functions, and JSON functions. |
MariaDB 10.3.13 [a] | rh-mariadb103 | A release of MariaDB, an alternative to MySQL for users of Red Hat Enterprise Linux. For all practical purposes, MySQL is binary compatible with MariaDB and can be replaced with it without any data conversions. This version introduces system-versioned tables, invisible columns, a new instant ADD COLUMN operation for InnoDB , and a JDBC connector for MariaDB and MySQL. |
MongoDB 3.4.9 | rh-mongodb34 | A release of MongoDB, a cross-platform document-oriented database system classified as a NoSQL database. This release introduces support for new architectures, adds message compression and support for the decimal128 type, enhances collation features and more. |
MongoDB 3.6.3 [a] | rh-mongodb36 | A release of MongoDB, a cross-platform document-oriented database system classified as a NoSQL database. This release introduces change streams, retryable writes, and JSON Schema, as well as other features. |
MySQL 5.7.24 | rh-mysql57 | A release of MySQL, which provides a number of new features and enhancements, including improved performance. |
MySQL 8.0.13 [a] | rh-mysql80 | A release of the MySQL server, which introduces a number of new security and account management features and enhancements. |
PostgreSQL 9.6.10 | rh-postgresql96 | A release of PostgreSQL, which introduces parallel execution of sequential scans, joins, and aggregates, and provides enhancements to synchronous replication, full-text search, deration driver, postgres_fdw, as well as performance improvements. |
PostgreSQL 10.6 [a] | rh-postgresql10 | A release of PostgreSQL, which includes a significant performance improvement and a number of new features, such as logical replication using the publish and subscribe keywords, or stronger password authentication based on the SCRAM-SHA-256 mechanism. |
Node.js 8.11.4 [a] | rh-nodejs8 | A release of Node.js, which provides multiple API enhancements and new features, including V8 engine version 6.0, npm 5.6.0 and npx, enhanced security, experimental N-API support, and performance improvements. |
Node.js 10.10.0 [a] | rh-nodejs10 | A release of Node.js, which provides multiple API enhancements and new features, including V8 engine version 6.6, full N-API support, and stability improvements. |
nginx 1.10.2 | rh-nginx110 | A release of nginx, a web and proxy server with a focus on high concurrency, performance, and low memory usage. This version introduces a number of new features, including dynamic module support, HTTP/2 support, Perl integration, and numerous performance improvements. |
nginx 1.12.1 [a] | rh-nginx112 | A release of nginx, a web and proxy server with a focus on high concurrency, performance, and low memory usage. This version introduces a number of new features, including IP Transparency, improved TCP/UDP load balancing, enhanced caching performance, and numerous performance improvements. |
nginx 1.14.1 [a] | rh-nginx114 | A release of nginx, a web and proxy server with a focus on high concurrency, performance, and low memory usage. This version provides a number of features, such as mirror module, HTTP/2 server push, gRPC proxy module, and numerous performance improvements. |
Apache httpd 2.4.34 | httpd24 | A release of the Apache HTTP Server (httpd), including a high performance event-based processing model, enhanced SSL module and FastCGI support. The mod_auth_kerb, mod_auth_mellon, and ModSecurity modules are also included. |
Varnish Cache 5.2.1 [a] | rh-varnish5 | A release of Varnish Cache, a high-performance HTTP reverse proxy. This version includes the shard director, experimental HTTP/2 support, and improvements to Varnish configuration through separate VCL files and VCL labels. |
Varnish Cache 6.0.2 [a] | rh-varnish6 | A release of Varnish Cache, a high-performance HTTP reverse proxy. This version includes support for Unix Domain Sockets (both for clients and for back-end servers), new level of the VCL language (vcl 4.1 ), and improved HTTP/2 support. |
Maven 3.5.0 [a] | rh-maven35 | A release of Maven, a software project management and comprehension tool. This release introduces support for new architectures and a number of new features, including colorized logging. |
Git 2.18.1 [a] | rh-git218 | A release of Git, a distributed revision control system with a decentralized architecture. As opposed to centralized version control systems with a client-server model, Git ensures that each working copy of a Git repository is its exact copy with complete revision history. This version includes the Large File Storage (LFS) extension. |
Redis 3.2.4 | rh-redis32 | A release of Redis 3.2, a persistent key-value database. |
Redis 5.0.3 [a] | rh-redis5 | A release of Redis 5.0, a persistent key-value database. Redis now provides redis-trib , a cluster management tool. |
HAProxy 1.8.17 [a] | rh-haproxy18 | A release of HAProxy 1.8, a reliable, high-performance network load balancer for TCP and HTTP-based applications. |
Common Java Packages | rh-java-common | This Software Collection provides common Java libraries and tools used by other collections. The rh-java-common Software Collection is required by the rh-maven35 and rh-scala210 components and it is not supposed to be installed directly by users. |
JDK Mission Control [a] | rh-jmc | This Software Collection includes JDK Mission Control (JMC), a powerful profiler for HotSpot JVMs. JMC provides an advanced set of tools for efficient and detailed analysis of extensive data collected by the JDK Flight Recorder. JMC requires JDK version 8 or later to run. Target Java applications must run with at least OpenJDK version 11 so that JMC can access JDK Flight Recorder features. The rh-jmc Software Collection requires the rh-maven35 Software Collection. |
[a]
This Software Collection is available only for Red Hat Enterprise Linux 7
|
Previously released Software Collections remain available in the same distribution channels. All Software Collections, including retired components, are listed in the Table 1.2, “All Available Software Collections”. Software Collections that are no longer supported are marked with an asterisk (
*
).
See the Red Hat Software Collections Product Life Cycle document for information on the length of support for individual components. For detailed information regarding previously released components, refer to the Release Notes for earlier versions of Red Hat Software Collections.
Component | Software Collection | Availability | Architectures supported on RHEL7 |
---|---|---|---|
Components New in Red Hat Software Collections 3.3 | |||
MariaDB 10.3.13 | rh-mariadb103 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Redis 5.0.3 | rh-redis5 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Ruby 2.6.2 | rh-ruby26 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Components Updated in Red Hat Software Collections 3.3 | |||
---|---|---|---|
Red Hat Developer Toolset 8.1 | devtoolset-8 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64, ppc64le |
HAProxy 1.8.17 | rh-haproxy18 | RHEL7 | x86_64 |
Varnish Cache 6.0.2 | rh-varnish6 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Apache httpd 2.4.34 | httpd24 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Components Last Updated in Red Hat Software Collections 3.2 | |||
---|---|---|---|
PHP 7.2.10 | rh-php72 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
MySQL 8.0.13 | rh-mysql80 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Node.js 10.10.0 | rh-nodejs10 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
nginx 1.14.1 | rh-nginx114 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Git 2.18.1 | rh-git218 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
JDK Mission Control | rh-jmc | RHEL7 | x86_64 |
Components Last Updated in Red Hat Software Collections 3.1 | |||
---|---|---|---|
Red Hat Developer Toolset 7.1 | devtoolset-7 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64, ppc64le |
Perl 5.26.3 | rh-perl526 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Ruby 2.5.5 | rh-ruby25 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
MongoDB 3.6.3 | rh-mongodb36 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Varnish Cache 5.2.1 | rh-varnish5 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
PostgreSQL 10.6 | rh-postgresql10 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
PHP 7.0.27 | rh-php70 | RHEL6, RHEL7 | x86_64 |
MySQL 5.7.24 | rh-mysql57 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Components Last Updated in Red Hat Software Collections 3.0 | |||
---|---|---|---|
PHP 7.1.8 | rh-php71 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
nginx 1.12.1 | rh-nginx112 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Python 3.6.3 | rh-python36 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Maven 3.5.0 | rh-maven35 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
MariaDB 10.2.22 | rh-mariadb102 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
PostgreSQL 9.6.10 | rh-postgresql96 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
MongoDB 3.4.9 | rh-mongodb34 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Node.js 8.11.4 | rh-nodejs8 | RHEL7 | x86_64, s390x, aarch64, ppc64le |
Components Last Updated in Red Hat Software Collections 2.4 | |||
---|---|---|---|
Red Hat Developer Toolset 6.1 | devtoolset-6* | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64, ppc64le |
Scala 2.10.6 | rh-scala210 | RHEL7 | x86_64 |
nginx 1.10.2 | rh-nginx110 | RHEL6, RHEL7 | x86_64 |
Node.js 6.11.3 | rh-nodejs6* | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Ruby 2.4.6 | rh-ruby24 | RHEL6, RHEL7 | x86_64 |
Ruby on Rails 5.0.1 | rh-ror50 | RHEL6, RHEL7 | x86_64 |
Eclipse 4.6.3 | rh-eclipse46* | RHEL7 | x86_64 |
Python 2.7.16 | python27 | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Thermostat 1.6.6 | rh-thermostat16* | RHEL6, RHEL7 | x86_64 |
Maven 3.3.9 | rh-maven33* | RHEL6, RHEL7 | x86_64 |
Common Java Packages | rh-java-common | RHEL6, RHEL7 | x86_64 |
Components Last Updated in Red Hat Software Collections 2.3 | |||
---|---|---|---|
Git 2.9.3 | rh-git29* | RHEL6, RHEL7 | x86_64, s390x, aarch64, ppc64le |
Redis 3.2.4 | rh-redis32 | RHEL6, RHEL7 | x86_64 |
Perl 5.24.0 | rh-perl524 | RHEL6, RHEL7 | x86_64 |
Python 3.5.1 | rh-python35* | RHEL6, RHEL7 | x86_64 |
MongoDB 3.2.10 | rh-mongodb32* | RHEL6, RHEL7 | x86_64 |
Ruby 2.3.8 | rh-ruby23* | RHEL6, RHEL7 | x86_64 |
PHP 5.6.25 | rh-php56* | RHEL6, RHEL7 | x86_64 |
Components Last Updated in Red Hat Software Collections 2.2 | |||
---|---|---|---|
Red Hat Developer Toolset 4.1 | devtoolset-4* | RHEL6, RHEL7 | x86_64 |
MariaDB 10.1.29 | rh-mariadb101* | RHEL6, RHEL7 | x86_64 |
MongoDB 3.0.11 upgrade collection | rh-mongodb30upg* | RHEL6, RHEL7 | x86_64 |
Node.js 4.6.2 | rh-nodejs4* | RHEL6, RHEL7 | x86_64 |
PostgreSQL 9.5.14 | rh-postgresql95* | RHEL6, RHEL7 | x86_64 |
Ruby on Rails 4.2.6 | rh-ror42* | RHEL6, RHEL7 | x86_64 |
MongoDB 2.6.9 | rh-mongodb26* | RHEL6, RHEL7 | x86_64 |
Thermostat 1.4.4 | thermostat1* | RHEL6, RHEL7 | x86_64 |
Components Last Updated in Red Hat Software Collections 2.1 | |||
---|---|---|---|
Varnish Cache 4.0.3 | rh-varnish4* | RHEL6, RHEL7 | x86_64 |
nginx 1.8.1 | rh-nginx18* | RHEL6, RHEL7 | x86_64 |
Node.js 0.10 | nodejs010* | RHEL6, RHEL7 | x86_64 |
Maven 3.0.5 | maven30* | RHEL6, RHEL7 | x86_64 |
V8 3.14.5.10 | v8314* | RHEL6, RHEL7 | x86_64 |
Components Last Updated in Red Hat Software Collections 2.0 | |||
---|---|---|---|
Red Hat Developer Toolset 3.1 | devtoolset-3* | RHEL6, RHEL7 | x86_64 |
Perl 5.20.1 | rh-perl520* | RHEL6, RHEL7 | x86_64 |
Python 3.4.2 | rh-python34* | RHEL6, RHEL7 | x86_64 |
Ruby 2.2.9 | rh-ruby22* | RHEL6, RHEL7 | x86_64 |
Ruby on Rails 4.1.5 | rh-ror41* | RHEL6, RHEL7 | x86_64 |
MariaDB 10.0.33 | rh-mariadb100* | RHEL6, RHEL7 | x86_64 |
MySQL 5.6.40 | rh-mysql56* | RHEL6, RHEL7 | x86_64 |
PostgreSQL 9.4.14 | rh-postgresql94* | RHEL6, RHEL7 | x86_64 |
Passenger 4.0.50 | rh-passenger40* | RHEL6, RHEL7 | x86_64 |
PHP 5.4.40 | php54* | RHEL6, RHEL7 | x86_64 |
PHP 5.5.21 | php55* | RHEL6, RHEL7 | x86_64 |
nginx 1.6.2 | nginx16* | RHEL6, RHEL7 | x86_64 |
DevAssistant 0.9.3 | devassist09* | RHEL6, RHEL7 | x86_64 |
Components Last Updated in Red Hat Software Collections 1 | |||
---|---|---|---|
Git 1.9.4 | git19* | RHEL6, RHEL7 | x86_64 |
Perl 5.16.3 | perl516* | RHEL6, RHEL7 | x86_64 |
Python 3.3.2 | python33* | RHEL6, RHEL7 | x86_64 |
Ruby 1.9.3 | ruby193* | RHEL6, RHEL7 | x86_64 |
Ruby 2.0.0 | ruby200* | RHEL6, RHEL7 | x86_64 |
Ruby on Rails 4.0.2 | ror40* | RHEL6, RHEL7 | x86_64 |
MariaDB 5.5.53 | mariadb55* | RHEL6, RHEL7 | x86_64 |
MongoDB 2.4.9 | mongodb24* | RHEL6, RHEL7 | x86_64 |
MySQL 5.5.52 | mysql55* | RHEL6, RHEL7 | x86_64 |
PostgreSQL 9.2.18 | postgresql92* | RHEL6, RHEL7 | x86_64 |
Legend:
- RHEL6 – Red Hat Enterprise Linux 6
- RHEL7 – Red Hat Enterprise Linux 7
- x86_64 – AMD64 and Intel 64 architectures
- s390x – IBM Z
- aarch64 – The 64-bit ARM architecture
- ppc64 – IBM POWER, big endian
- ppc64le – IBM POWER, little endian
- * – Retired component; this Software Collection is no longer supported
The tables above list the latest versions available through asynchronous updates.
Note that Software Collections released in Red Hat Software Collections 2.0 and later include a
rh-
prefix in their names.
Eclipse is available as a part of the Red Hat Developer Tools offering.
1.3. Changes in Red Hat Software Collections 3.3
1.3.1. Overview
Architectures
The Red Hat Software Collections offering contains packages for Red Hat Enterprise Linux 7 running on AMD64 and Intel 64 architectures; certain Software Collections are available also for Red Hat Enterprise Linux 6.
In addition, Red Hat Software Collections 3.3 supports the following architectures on Red Hat Enterprise Linux 7:
- The 64-bit ARM architecture
- IBM Z
- IBM POWER, little endian
For a full list of components and their availability, see Table 1.2, “All Available Software Collections”.
New Software Collections
Red Hat Software Collections 3.3 adds these new Software Collections:
- rh-mariadb103 — see Section 1.3.3, “Changes in MariaDB”
- rh-redis5 — see Section 1.3.4, “Changes in Redis”
- rh-ruby26 — see Section 1.3.5, “Changes in Ruby”
All new Software Collections are available only for Red Hat Enterprise Linux 7.
Updated Software Collections
The following component has been updated in Red Hat Software Collections 3.3:
- devtoolset-8 — see Section 1.3.2, “Changes in Red Hat Developer Toolset”
- rh-varnish6 — see Section 1.3.6, “Changes in Varnish Cache”
- httpd24 — see Section 1.3.7, “Changes in Apache httpd”
- rh-haproxy18 — see Section 1.3.8, “Changes in HAProxy”
Red Hat Software Collections Container Images
The following container images are new in Red Hat Software Collections 3.3:
- rhscl/mariadb-103-rhel7
- rhscl/redis-5-rhel7
- rhscl/ruby-26-rhel7
The following container images have been updated in Red Hat Software Collections 3.3:
- rhscl/devtoolset-8-toolchain-rhel7
- rhscl/devtoolset-8-perftools-rhel7
- rhscl/varnish-6-rhel7
- rhscl/httpd-24-rhel7
For detailed information regarding Red Hat Software Collections container images, see Section 3.4, “Red Hat Software Collections Container Images”.
1.3.2. Changes in Red Hat Developer Toolset
The following components have been upgraded in Red Hat Developer Toolset 8.1 compared to the previous release of Red Hat Developer Toolset:
- GCC to version 8.3.1
- elfutils to version 0.176
In addition, bug fix updates are available for the following components:
- binutils
- GDB
- SystemTap
- Valgrind
- Dyninst
For detailed information on changes in 8.1, see the Red Hat Developer Toolset User Guide.
1.3.3. Changes in MariaDB
The new rh-mariadb103 Software Collection provides MariaDB 10.3.13, which introduces a number of new features and bug fixes.
New features include:
- A new rh-mariadb103-mariadb-java-client package, which provides the Java Database Connectivity (JDBC) connector for the MariaDB and MySQL database servers. The connector supports MariaDB and MySQL version 5.5.3 and later, JDBC version 4.2, and it requires Java Runtime Environment (JRE) version 8 or 11. (BZ#1625989)
- System-versioned tables, which enable you to store history of changes.
- Invisible columns, which are not listed unless explicitly called.
- A new instant
ADD COLUMN
operation forInnoDB
, which does not require the whole table to be rebuilt.
For compatibility notes and migration instructions, see Section 5.1, “Migrating to MariaDB 10.3”.
For detailed changes in MariaDB 10.3, see the upstream documentation.
1.3.4. Changes in Redis
The new rh-redis5 Software Collection includes Redis 5.0.3. This version provides multiple enhancements and bug fixes over version 3.2 distributed with an earlier Red Hat Software Collections release. Most notably, the
redis-trib
cluster management tool has been implemented in the Redis command-line interface.
For migration and compatibility notes, see Section 5.10, “Migrating to Redis 5”.
1.3.5. Changes in Ruby
The new rh-ruby26 Software Collection provides Ruby 2.6.2, which introduces a number of performance improvements, bug fixes, and new features.
Notable enhancements include:
- Constant names are now allowed to begin with a non-ASCII capital letter.
- Support for an endless range has been added.
- A new
Binding#source_location
method has been provided. $SAFE
is now a process global state and it can be set back to0
.
The following performance improvements have been implemented:
- The
Proc#call
andblock.call
processes have been optimized. - A new garbage collector managed heap, Transient heap (
theap
), has been introduced. - Native implementations of coroutines for individual architectures have been introduced.
For more information regarding changes in Ruby 2.6, see the upstream announcement.
1.3.6. Changes in Varnish Cache
The rh-varnish6 Software Collection has been updated to version 6.0.2. This version includes numerous bug fixes, various minor enhancements, for example to Varnish Configuration Language (VCL) and log messages, and improvements to stability.
In addition, the varnish-modules subpackage has been added, which provides a collection of Varnish modules (VMODs) that extend VCL used for describing HTTP request and response policies with additional capabilities. For more information, see the upstream documentation.
1.3.7. Changes in Apache httpd
This release introduces the
ModSecurity
module and an update to the mod_auth_mellon
module. Both modules are available only for Red Hat Enterprise Linux 7.
The
ModSecurity
module, distributed in the httpd24-mod_security packages, includes an open source web application firewall (WAF) engine for web applications. ModSecurity
operates embedded into the web server and has a robust event-based programming language, which provides protection from a range of attacks against web applications. Red Hat Software Collections 3.3 includes ModSecurity
version 2.9.3.
The
mod_auth_mellon
module has been updated to version 0.14.0, which provides various bug fixes, improvements to stability, and enhancements, such as:
- More detailed error logging
- New diagnostics logging, which creates a detailed log during request processing
- Support for selecting which signature algorithm is used when signing messages
This update to
mod_auth_mellon
also introduces the following backward incompatible change:
- The default signature algorithm used for signing messages has been changed from
rsa-sha1
torsa-sha256
. If your identity provider (IdP) does not supportrsa-sha256
, adjust the/opt/rh/httpd24/root/etc/httpd/conf.d/auth_mellon.conf
file to include the following line:MellonSignatureMethod rsa-sha1
Note that this affects only messages sent frommod_auth_mellon
to your IdP. It does not affect authentication responses or other messages sent from your IdP tomod_auth_mellon
.
1.3.8. Changes in HAProxy
The HAProxy load balancer has been updated to version 1.8.17, which provides multiple bug and security fixes.
1.4. Compatibility Information
Red Hat Software Collections 3.3 is available for all supported releases of Red Hat Enterprise Linux 7 on AMD64 and Intel 64 architectures, the 64-bit ARM architecture, IBM Z, and IBM POWER, little endian.
Certain components are available also for all supported releases of Red Hat Enterprise Linux 6 on AMD64 and Intel 64 architectures.
For a full list of available components, see Table 1.2, “All Available Software Collections”.
1.5. Known Issues
- multiple components, BZ#1716378
- Certain files provided by the Software Collections debuginfo packages might conflict with the corresponding debuginfo package files from the base Red Hat Enterprise Linux system or from other versions of Red Hat Software Collections components. For example, the python27-python-debuginfo package files might conflict with the corresponding files from the python-debuginfo package installed on the core system. Similarly, files from the httpd24-mod_auth_mellon-debuginfo package might conflict with similar files provided by the base system mod_auth_mellon-debuginfo package. To work around this problem, uninstall the base system debuginfo package prior to installing the Software Collection debuginfo package.
rh-mysql80
, BZ#1646363- The
mysql-connector-java
database connector does not work with the MySQL 8.0 server. To work around this problem, use themariadb-java-client
database connector from the rh-mariadb103 Software Collection. rh-mysql80
, BZ#1646158- The default character set has been changed to
utf8mb4
in MySQL 8.0 but this character set is unsupported by thephp-mysqlnd
database connector. Consequently,php-mysqlnd
fails to connect in the default configuration. To work around this problem, specify a known character set as a parameter of the MySQL server configuration. For example, modify the/etc/opt/rh/rh-mysql80/my.cnf.d/mysql-server.cnf
file to read:[mysqld] character-set-server=utf8
httpd24
component, BZ#1429006- Since httpd 2.4.27, the
mod_http2
module is no longer supported with the defaultprefork
Multi-Processing Module (MPM). To enable HTTP/2 support, edit the configuration file at/opt/rh/httpd24/root/etc/httpd/conf.modules.d/00-mpm.conf
and switch to theevent
orworker
MPM.Note that the HTTP/2 server-push feature does not work on the 64-bit ARM architecture, IBM Z, and IBM POWER, little endian. httpd24
component, BZ#1327548- The
mod_ssl
module does not support the ALPN protocol on Red Hat Enterprise Linux 6, or on Red Hat Enterprise Linux 7.3 and earlier. Consequently, clients that support upgrading TLS connections to HTTP/2 only using ALPN are limited to HTTP/1.1 support. -
httpd24
component, BZ#1224763 - When using the
mod_proxy_fcgi
module with FastCGI Process Manager (PHP-FPM), httpd uses port8000
for the FastCGI protocol by default instead of the correct port9000
. To work around this problem, specify the correct port explicitly in configuration. httpd24
component, BZ#1382706- When SELinux is enabled, the
LD_LIBRARY_PATH
environment variable is not passed through to CGI scripts invoked by httpd. As a consequence, in some cases it is impossible to invoke executables from Software Collections enabled in the/opt/rh/httpd24/service-environment
file from CGI scripts run by httpd. To work around this problem, setLD_LIBRARY_PATH
as desired from within the CGI script. -
httpd24
component - Compiling external applications against the Apache Portable Runtime (APR) and APR-util libraries from the httpd24 Software Collection is not supported. The LD_LIBRARY_PATH environment variable is not set in httpd24 because it is not required by any application in this Software Collection.
rh-python35
,rh-python36
components, BZ#1499990- The
pytz
module, which is used byBabel
for time zone support, is not included in the rh-python35, and rh-python36 Software Collections. Consequently, when the user tries to import the dates module fromBabel
, a traceback is returned. To work around this problem, installpytz
through the pip package manager from thepypi
public repository by using thepip install pytz
command. rh-python36
component- Certain complex trigonometric functions provided by numpy might return incorrect values on the 64-bit ARM architecture, IBM Z, and IBM POWER, little endian. The AMD64 and Intel 64 architectures are not affected by this problem.
python27
component, BZ#1330489- The python27-python-pymongo package has been updated to version 3.2.1. Note that this version is not fully compatible with the previously shipped version 2.5.2.
scl-utils
component- In Red Hat Enterprise Linux 7.5 and earlier, due to an architecture-specific macro bug in the scl-utils package, the
<collection>/root/usr/lib64/
directory does not have the correct package ownership on the 64-bit ARM architecture and on IBM POWER, little endian. As a consequence, this directory is not removed when a Software Collection is uninstalled. To work around this problem, manually delete<collection>/root/usr/lib64/
when removing a Software Collection. -
rh-ruby24
,rh-ruby23
components - Determination of
RubyGem
installation paths is dependent on the order in which multiple Software Collections are enabled. The required order has been changed since Ruby 2.3.1 shipped in Red Hat Software Collections 2.3 to support dependent Collections. As a consequence,RubyGem
paths, which are used forgem
installation during an RPM build, are invalid when the Software Collections are supplied in an incorrect order. For example, the build now fails if the RPM spec file containsscl enable rh-ror50 rh-nodejs6
. To work around this problem, enable the rh-ror50 Software Collection last, for example,scl enable rh-nodejs6 rh-ror50
. rh-maven35
,rh-maven33
components- When the user has installed both the Red Hat Enterprise Linux system version of maven-local package and the rh-maven35-maven-local package or rh-maven33-maven-local package, XMvn, a tool used for building Java RPM packages, run from the rh-maven35 or rh-maven33 Software Collection tries to read the configuration file from the base system and fails. To work around this problem, uninstall the maven-local package from the base Red Hat Enterprise Linux system.
-
perl
component - It is impossible to install more than one
mod_perl.so
library. As a consequence, it is not possible to use themod_perl
module from more than one Perl Software Collection. -
postgresql
component - The rh-postgresql9* packages for Red Hat Enterprise Linux 6 do not provide the
sepgsql
module as this feature requires installation of libselinux version 2.0.99, which is not available in Red Hat Enterprise Linux 6. -
httpd
,mariadb
,mongodb
,mysql
,nodejs
,perl
,php
,python
,ruby
, andror
components, BZ#1072319 - When uninstalling the httpd24, rh-mariadb*, rh-mongodb*, rh-mysql*, rh-nodejs*, rh-perl*, rh-php*, python27, rh-python*, rh-ruby*, or rh-ror* packages, the order of uninstalling can be relevant due to ownership of dependent packages. As a consequence, some directories and files might not be removed properly and might remain on the system.
-
mariadb
,mysql
components, BZ#1194611 - Since MariaDB 10 and MySQL 5.6, the rh-mariadb*-mariadb-server and rh-mysql*-mysql-server packages no longer provide the
test
database by default. Although this database is not created during initialization, the grant tables are prefilled with the same values as whentest
was created by default. As a consequence, upon a later creation of thetest
ortest_*
databases, these databases have less restricted access rights than is default for new databases.Additionally, when running benchmarks, therun-all-tests
script no longer works out of the box with example parameters. You need to create a test database before running the tests and specify the database name in the--database
parameter. If the parameter is not specified,test
is taken by default but you need to make sure thetest
database exist. -
mariadb
,mysql
,postgresql
,mongodb
components - Red Hat Software Collections 3.3 contains the MySQL 5.7, MySQL 8.0, MariaDB 10.0, MariaDB 10.1, MariaDB 10.2, PostgreSQL 9.5, PostgreSQL 9.6, PostgreSQL 10, MongoDB 3.2, MongoDB 3.4, and MongoDB 3.6 databases. The core Red Hat Enterprise Linux 6 provides earlier versions of the MySQL and PostgreSQL databases (client library and daemon). The core Red Hat Enterprise Linux 7 provides earlier versions of the MariaDB and PostgreSQL databases (client library and daemon). Client libraries are also used in database connectors for dynamic languages, libraries, and so on.The client library packaged in the Red Hat Software Collections database packages in the PostgreSQL component is not supposed to be used, as it is included only for purposes of server utilities and the daemon. Users are instead expected to use the system library and the database connectors provided with the core system.A protocol, which is used between the client library and the daemon, is stable across database versions, so, for example, using the PostgreSQL 9.2 client library with the PostgreSQL 9.4 or 9.5 daemon works as expected.The core Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7 do not include the client library for MongoDB. In order to use this client library for your application, you should use the client library from Red Hat Software Collections and always use the
scl enable ...
call every time you run an application linked against this MongoDB client library. -
mariadb
,mysql
,mongodb
components - MariaDB, MySQL, and MongoDB do not make use of the
/opt/provider/collection/root
prefix when creating log files. Note that log files are saved in the/var/opt/provider/collection/log/
directory, not in/opt/provider/collection/root/var/log/
.
Other Notes
-
rh-ruby*
,rh-python*
,rh-php*
components - Using Software Collections on a read-only NFS has several limitations.
- Ruby gems cannot be installed while the rh-ruby* Software Collection is on a read-only NFS. Consequently, for example, when the user tries to install the ab gem using the
gem install ab
command, an error message is displayed, for example:ERROR: While executing gem ... (Errno::EROFS) Read-only file system @ dir_s_mkdir - /opt/rh/rh-ruby22/root/usr/local/share/gems
The same problem occurs when the user tries to update or install gems from an external source by running thebundle update
orbundle install
commands. - When installing Python packages on a read-only NFS using the Python Package Index (PyPI), running the
pip
command fails with an error message similar to this:Read-only file system: '/opt/rh/rh-python34/root/usr/lib/python3.4/site-packages/ipython-3.1.0.dist-info'
- Installing packages from PHP Extension and Application Repository (PEAR) on a read-only NFS using the
pear
command fails with the error message:Cannot install, php_dir for channel "pear.php.net" is not writeable by the current user
This is an expected behavior. -
httpd
component - Language modules for Apache are supported only with the Red Hat Software Collections version of Apache httpd and not with the Red Hat Enterprise Linux system versions of httpd. For example, the
mod_wsgi
module from the rh-python35 Collection can be used only with the httpd24 Collection. - all components
- Since Red Hat Software Collections 2.0, configuration files, variable data, and runtime data of individual Collections are stored in different directories than in previous versions of Red Hat Software Collections.
-
coreutils
,util-linux
,screen
components - Some utilities, for example, su, login, or screen, do not export environment settings in all cases, which can lead to unexpected results. It is therefore recommended to use sudo instead of su and set the
env_keep
environment variable in the/etc/sudoers
file. Alternatively, you can run commands in a reverse order; for example:su -l postgres -c "scl enable rh-postgresql94 psql"
instead ofscl enable rh-postgresql94 bash
su -l postgres -c psql
When using tools like screen or login, you can use the following command to preserve the environment settings:source /opt/rh/<collection_name>/enable
-
python
component - When the user tries to install more than one scldevel package from the python27 and rh-python* Software Collections, a transaction check error message is returned. This is an expected behavior because the user can install only one set of the macro files provided by the packages (
%scl_python
,%scl_prefix_python
). -
php
component - When the user tries to install more than one scldevel package from the rh-php* Software Collections, a transaction check error message is returned. This is an expected behavior because the user can install only one set of the macro files provided by the packages (
%scl_php
,%scl_prefix_php
). -
ruby
component - When the user tries to install more than one scldevel package from the rh-ruby* Software Collections, a transaction check error message is returned. This is an expected behavior because the user can install only one set of the macro files provided by the packages (
%scl_ruby
,%scl_prefix_ruby
). -
perl
component - When the user tries to install more than one scldevel package from the rh-perl* Software Collections, a transaction check error message is returned. This is an expected behavior because the user can install only one set of the macro files provided by the packages (
%scl_perl
,%scl_prefix_perl
). -
nginx
component - When the user tries to install more than one scldevel package from the rh-nginx* Software Collections, a transaction check error message is returned. This is an expected behavior because the user can install only one set of the macro files provided by the packages (
%scl_nginx
,%scl_prefix_nginx
).
1.6. Deprecated Functionality
httpd24
component, BZ#1434053- Previously, in an SSL/TLS configuration requiring name-based SSL virtual host selection, the
mod_ssl
module rejected requests with a400 Bad Request
error, if the host name provided in theHost:
header did not match the host name provided in a Server Name Indication (SNI) header. Such requests are no longer rejected if the configured SSL/TLS security parameters are identical between the selected virtual hosts, in-line with the behavior of upstreammod_ssl
.