You should be aware of the following limitations when using
Visual COBOL with containers:
Debugging
- On Ubuntu, in order for debugging to work within a Docker version 18.04 Container, you must update the kernel of the Docker
host from version 5.0.0-27 to 5.0.0-31.
- When using the COBOL Application
launch configuration type to debug a COBOL application in a container, you cannot provide input to or see output from
the application. This problem does not occur when using Docker or podman commands to run the container, but does sometimes occur when running the application in a container from the IDE.
General
- Java is supported from version 8 update 162 onwards.
- It is not possible to containerize COBOL applications using lightweight operating systems such as CoreOS Container Linux,
SUSE MicroOS and Alpine Linux.
- It is not possible to run COBOL applications in containers on Linux on PowerPC or S/390 chipsets.
Operating Systems
Visual COBOL is supported for use with Docker on the following operating systems:
- Red Hat Enterprise Linux 7.4 or later
- SUSE Linux Enterprise Server 12 SP3 or later
- Amazon Linux 2
Visual COBOL is supported for use with OCI-compliant container tools (such as podman, buildah, skopeo, and runc) on the following operating
systems:
- Red Hat Enterprise Linux 8 or later
Use with
Micro Focus Products
- If a region is hosted within a container which does not or cannot expose its internal network addresses, the
Micro Focus Enterprise Server Common Web Administration interface will be unable to connect to the started region's ESMAC/monitor configuration unless the MFDS_EXTERNAL_ADDR environment
variable is set within the container to an externally contactable address.