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SSH Tectia 
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    About This Document >>
    Installing SSH Tectia Server for IBM z/OS >>
        Preparing for Installation >>
        Upgrading Previously Installed Secure Shell Software >>
            From OpenSSH
            From SSH Tectia Server for IBM z/OS Version 5.x
            From SSH Tectia Server for IBM z/OS Version 6.0
            From SSH Tectia Server for IBM z/OS when Two Versions Exist
        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 >>

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, as can the 5.x version.

The upgrade procedure will migrate your 5.x configuration and the keys automatically to the 6.x version.

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. In case you want to have both the 5.x and the 6.x servers running simultaneously, you must change the TCP port of either one of them, because otherwise the two installed servers will compete for default port 22.

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 6.1 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 6.1 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 6.1, see SSH Tectia Server for IBM z/OS Migration Guide.

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