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Version: 7.7

Installing OpenSSL 1.1.1 on RHEL 9

Actions Pro relies on RabbitMQ, which requires OpenSSL 1.1.1 to function. However, the latest versions of Red Hat Enterprise Linux and AlmaLinux include OpenSSL 3.x by default, leading to a version mismatch that prevents RabbitMQ from starting.

This guide provides step-by-step instructions for installing OpenSSL 1.1.1 by compiling it from source to ensure compatibility with Actions Pro.

Installation Steps​

  1. Install Dependencies

    Install Perl, GCC, and make by executing following command on the terminal:

    sudo yum install perl gcc make

  2. Download OpenSSL Source Code

    The source code of OpenSSL 1.1.1 library can be downloaded from: Old 1.1.1 Releases. Download the latest version by executing:

    wget https://openssl-library.org/source/old/1.1.1/openssl-1.1.1w.tar.gz

  3. Extract the Source Code

    Extract Extract the tarball on a machine where Pro will be installed by executing:

    tar -xvf openssl-1.1.1w.tar.gz
    • This command will extract the source code in a newly created folder openssl-1.1.1w.
    • Navigate to this new folder by executing:
      cd openssl-1.1.1w

  4. Compile and Install Open SSL

    • Configure the source: 
      .config
    • Compile the code:
      make
    • Test the build
      make test
    • Install the compiled libraries 
      sudo make install

The last command will copy libcrypto.so.1.1 and libssl.so.1.1 into the /usr/local/lib64 folder. Verify the printed output of the sudo make install command to confirm the location.

  1. Cleanup

    Optional: Remove the source code directory and tarball to save space:

    rm -rf openssl-1.1.1w openssl-1.1.1w.tar.gz