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SSH Tectia 
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    About This Document >>
    Installing SSH Tectia Server for IBM z/OS >>
        Preparing for Installation >>
            System Requirements
            Permission Requirements
            Directories and Datasets
            Upgrading Previously Installed Secure Shell Software
        Installing the SSH Tectia Server for IBM z/OS Software >>
    Getting Started with SSH Tectia Server for IBM z/OS >>
    Setting up Non-Interactive Server and User Authentication >>
    Setting up Non-Interactive Secure File Transfer >>

Upgrading Previously Installed Secure Shell Software

Check if you have some Secure Shell software, for example earlier versions of SSH Tectia products or IBM Ported Tool for z/OS (OpenSSH), running on the machine where you are planning to install the new SSH Tectia versions.

From OpenSSH

Before installing SSH Tectia Server 6.0 for IBM z/OS, stop any OpenSSH servers running on port 22, or change their listener port. You do not need to uninstall the OpenSSH software.

Proceed with the installation normally as described in Installing the Software.

From SSH Tectia Server for IBM z/OS Version 5.x

The product structure and the installation directory of SSH Tectia Server for IBM z/OS has changed in version 6.0. If you have an earlier version of SSH Tectia Server for IBM z/OS installed, it can coexist with version 6.0.

Before proceeding with the installation as described in Installing the Software, condsider the following issues.

When you run setup.sh for upgrading from version 5.x you must choose if you want to keep the old 5.x installation intact or if you want to uninstall all 5.x files. You must run setup.sh either with

./setup.sh --uninstall-old 

or

./setup.sh --keep-old

If you choose to uninstall 5.x, please note that the directories /etc/ssh2 and /usr/lpp/ssh2 will get unconditionally removed after the upgrade procedure has succesfully completed. Make sure that those directories do not contain any files you want to keep for reference (ad-hoc configuration backups, notes etc.) before running setup.sh.

If you choose to keep the 5.x installation, nothing from the old 5.x will be uninstalled by the setup.sh script. Please note that by default the two installed servers compete for TCP port 22 and thus cannot be run simultaneously. To avoid conflicts at the next IPL please check and update:

  • Your started task JCL for the server
  • Operator instructions for running the server
  • Any other sshd2 init procedures (/etc/rc for example)

When upgrading from 5.x to 6.x, the default files/directories under /etc/ssh2/ are copied from the 5.x installation to your new installation at /opt/tectia/ and they continue to be used with SSH Tectia Server 6.0 for IBM z/OS. See SSH Tectia Server for IBM z/OS Administrator Manual for details.

The existing /etc/ssh2/ssh2_config or $HOME/.ssh2/ssh2_config configuration files are not used by SSH Tectia Server 6.0 for IBM z/OS client components. You have to create new opt/tectia/etc/ssh-broker-config.xml and $HOME/.ssh2/ssh-broker-config.xml files.

For information on upgrading SSH Tectia client tools configurations from to version 5.x to 6.0, see SSH Tectia Server for IBM z/OS Migration Guide.

From SSH Tectia Server for IBM z/OS Version 6.0

SSH Tectia Server 6.0 for IBM z/OS can be upgraded simply by installing a newer maintenance version of the software on top of the older version. The already defined configuration will be preserved untouched. If you have both versions 5.x and version 6.x installed you must choose which installation the upgraded system will be based on.

To upgrade SSH Tectia Server for IBM z/OS:

  1. Unpack the archive as described in Section Unpacking the Archive.
  2. Run the setup script as described in Section Running the Setup Script.

The setup script will not restart the server automatically.

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