Docker Pattern vs Kubernetes Inconsistent Image ID Values - Known Error

Docker Pattern vs Kubernetes Inconsistent Image ID Values Description Kubernetes and Docker patterns wil create image duplicate CI although they retrieved the same image. Docker images can be retrieved in 4 ways:

docker pull nginx@sha256:10d1f5b58f74683ad34eb29287e07dab1e90f10af243f151bb50aa5dbb4d62ee docker pull nginx:1.24-perl docker pull nginx:latest docker pull nginx The next section explains how sn_itom_pattern.manifest_digest_image_id and sn_itom_pattern.manifest_digest_image_id_truncate true|false system properties impact cmdb_ci_docker_image's image_id population

The default combination is problematic because it populates docker local image ids.

manifest_digest_image_id = false, manifest_digest_image_id_truncate = false

NOTE: Every system property change will require cmdb_ci_docker_container and cmdb_ci_docker_image table flush.

Either manifest_digest_image_id = true, manifest_digest_image_id_truncate = true or manifest_digest_image_id = true, manifest_digest_image_id_truncate = false will make sure Docker and Kubernetes patterns won't create cmdb_ci_docker_image duplicates.

If manifest_digest_image_id = true, manifest_digest_image_id_truncate = true discovery will truncate image manifest digests and it will assign the first 12 characters to image_ids.

Kubernetes manifest_digest_image_id = true, manifest_digest_image_id_truncate = true Name: nginx Image Id: 3c4c1f42a89e Image Digest: 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Size (bytes): Image Created: manifest_digest_image_id = false, manifest_digest_image_id_truncate = false Name: nginx Image Id: 10d1f5b58f74 Image Digest: 10d1f5b58f74683ad34eb29287e07dab1e90f10af243f151bb50aa5dbb4d62ee Size (bytes): Image Created: manifest_digest_image_id = true, manifest_digest_image_id_truncate = false Name: nginx Image Id: 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Image Digest: 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Size (bytes): Image Created: Docker manifest_digest_image_id = true, manifest_digest_image_id_truncate = true Name nginx Image Id 3c4c1f42a89e Image Digest 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Size (bytes) 186,779,305 Image Created 21.11.2023 01:05 manifest_digest_image_id = false, manifest_digest_image_id_truncate = false Name nginx Image Id a6bd71f48f68 Image Digest 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Size (bytes) 186,779,305 Image Created 21.11.2023 01:05 manifest_digest_image_id = true, manifest_digest_image_id_truncate = false Name nginx Image Id 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Image Digest 3c4c1f42a89e343c7b050c5e5d6f670a0e0b82e70e0e7d023f10092a04bbb5a7 Size (bytes) 186,779,305 Image Created 21.11.2023 01:05 Steps to Reproduce

1. Run Discovery using Docker pattern,

2. From the pattern logs, the command should be failing at the step: inspect docker images

3. As a result, the docker pattern will fail to create the relationships due to image_id mismatches.

Workaround The code change is going to be released in Feb 2024 in following store releases:

Visibility Content Discovery and Service Mapping Patterns Otherwise retrieve and commit attached update sets. They are independent which means the commit order is not important.

NOTE : Do not commit attached update sets after Feb 2024 because the will be available out of the box!!!

sys_remote_update_set_257e14f087e3b1502e1edbdd3fbb3503.xml sys_remote_update_set_ce5e10f087e3b1502e1edbdd3fbb35bc.xml Kubernetes and Docker population can be tuned by system properties. Create them because they don't exist by default.

sn_itom_pattern.manifest_digest_image_id_truncate

application = Discovery and Service Mapping Patterns suffix = manifest_digest_image_id_truncate name = sn_itom_pattern.manifest_digest_image_id_truncate type = true | false value = true

sn_itom_pattern.manifest_digest_image_id

application = Discovery and Service Mapping Patterns suffix = manifest_digest_image_id name = sn_itom_pattern.manifest_digest_image_id type = true | false value = true

Flush cmdb_ci_docker_image table to get rid of duplicates!

Flush cmdb_ci_docker_container table to get rid of duplicates!

Rerun discovery!