Changelog for OpenShift YAML file

2021-01-26 - **Version 1.2.1 **

• Introduce dangling anchors in the YAML file to prevent end users from pushing malformed or incomplete YAMLs to their clusters; replace the anchors with the actual values, or provide an addition to the document where the anchors are specified (neat for automation!)
• Remove out-of-the-box nodeSelector, now the Instana agent will be installed on all OpenShift nodes.
• Automatically assign the privileged Security Context Constraint to the instana-agent service account, so that no separate oc adm policy add-scc-to-user privileged -z instana-agent is required any loger; also, this allows us to ...

• Add via YAML the instana-agent namespace. For clusters where the namespace was created manually, executing oc apply -f instana-agent.yaml will therefore result in the following benign warning:

  $ oc apply -f instana-agent.yaml
  Warning: oc apply should be used on resource created by either oc create --save-config or oc apply

• Removed hard-coded heap sizing for the Instana agent JVM via the JAVA_OPTS environment variable, which caused oversights in which adding more memory to the container did not result in the Instana agent overcoming memory issues.

2020-10-23 - Version 1.0.33

• Use dnsPolicy: ClusterFirstWithHostNet in the DaemonSet template spec as this should be the default for pods with hostNetwork: true according to this Kubernetes documentation

2020-10-13 - Version 1.0.32

• Update version to match helm chart. No visible changes.

2020-10-08 - Version 1.0.31

• Update version to match helm chart. No visible changes.

2020-08-17 - Version 1.0.30

• Update the ClusterRole to add persistentvolumes and persistentvolumeclaims to the list of resources in the core apiGroup

2020-07-16 - Version 1.0.29

• Update version to match helm chart. No visible changes.

2020-04-28 - Version 1.0.28

• Update the ClusterRole to add cronjobs to the list of resources in the batch apiGroup

2020-04-15 - Version 1.0.27

• Update the ClusterRole to add daemonsets and statefulsets to the list of resources in the apps apiGroup
• Update the ClusterRole to add a new apiGroup networking.k8s.io for ingresses (available since Kubernetes v1.14) as it will be completely removed from the extensions apiGroup in Kubernetes v1.22

2020-03-25 - Version 1.0.26

• Add specific health check for leader elector sidecar to improve reliability of Kubernetes monitoring
• Add app.kubernetes.io/version label to all resources
• Change name and app labels to more standard app.kubernetes.io/name label

• Rename various resources:

  • Rename ConfigMap from instana-configuration to instana-agent
  • Rename ClusterRole from instana-agent-role to instana-agent
  • Rename ClusterRoleBinding from instana-agent-role-binding to instana-agent
  • Rename ServiceAccount from instana-admin to instana-agent
  • Rename Secret from instana-agent-secret to instana-agent
• Add ServiceAccount as a resource (previously it was created via command line)

2020-03-25 - Version 1.0.25

• No changes

2020-03-18 - Version 1.0.24

• Add app.kubernetes.io/version label to ClusterRole and DaemonSet resources, corresponding to equivalent helm chart 1.0.24.

2020-02-12

• Increase liveness probe initial delay to 5 minutes, period to 10 seconds (the default), and timeout to 3 seconds to improve agent stability on very heavily loaded nodes.

2019-12-23

• Add the POD_IP environment variable to the instana-agent container to ensure that the agent will bind to that address instead of trying to detect a public IP address.

2019-12-19

• Remove specification of host in the livenessProbe for both the instana-agent and instana-agent-leader-elector containers as we would like to explore other options.

2019-12-13

• Mount /var/lib/containers/storage in the DaemonSet for CRI-O support.
• Specify host in the livenessProbe for both the instana-agent and instana-agent-leader-elector containers.

2019-10-14

• Use serviceAccountName instead of the deprecated serviceAccount within apps.v1.DaemonSetSpec.template.spec. This has been deprecated at least since k8s 1.10
• [Fix] Ensure that the required field selector is set on apps.v1.DaemonSetSpec

2019-10-08

• Update DaemonSet to use apiVersion apps/v1 instead of the deprecated and soon to be removed extensions/v1beta1.

2019-06-03

• instana/leader-elector version increased from 0.5.1 to 0.5.4.

2019-05-23

• Added /run as a default container mount.

2019-04-03

• Added containerPort to agent daemonset.

2019-03-13

• Added INSTANA_AGENT_POD_NAME UID as leader election.

2019-01-29

• Added the apps apiGroup.
• Added the patch permission for endpoints.

2019-01-04

• Added all possible matcher modes for secrets.

2019-01-02

• Updated mountPath from /var/run/docker.sock to var/run.