Chapter 34. Revision History: Cluster Administration

34.1. Tue Nov 21 2017

Affected Topic	Description of Change
Service Accounts	Changed `serviceaccounts` to `serviceaccount` in the User Names and Groups section.
Monitoring and Debugging Routers	Added new section on Viewing Statistics.
Manging Nodes	Added new section on Resetting Docker Storage to free up space on nodes.

34.2. Fri Nov 10 2017

Affected Topic	Description of Change
Service Accounts	Changed `serviceaccounts` to `serviceaccount` in the User Names and Groups section.

34.3. Mon Sep 18 2017

Affected Topic	Description of Change
Setting Limit Ranges	Added link to information on how CPU and memory are calculated.

34.4. Mon Aug 28 2017

Affected Topic	Description of Change
Image Policy	Added note clarifying the need for the image prefix to set the default registry string in the Configuring the ImagePolicy Admission Plug-in section.
Pruning Objects	Added valid units of measurement for `--keep-younger-than`.
Troubleshooting OpenShift SDN	Changed the Further Help section to Finding Network Issues Using the Diagnostics Tool and added information about the Diagnostic Tool.
Troubleshooting OpenShift SDN	Corrected `vxlan0` to `vxlan_sys_4789` in the Debugging Local Networking section.

34.5. Tue Aug 15 2017

Affected Topic	Description of Change
High Availability	Added verbiage clarifying the example outlined in the Configuring a Highly-available Service section.

34.6. Thu Jul 27 2017

Affected Topic	Description of Change
Setting Quotas	Updated the references to quota and limit ranges, as they are now listed on the Quota page.
Setting Limit Ranges	Updated the references to quota and limit ranges, as they are now listed on the Quota page.

34.7. Tue Jul 18 2017

Affected Topic	Description of Change
Managing Security Context Constraints	Updated the Add an SCC to a User, Group, or Project section to add notes on granting SCC access and clarify project access.

34.8. Wed Jul 05 2017

Affected Topic	Description of Change
Cluster Administration Setting Quotas	Removed unsupported limits.storage parameter.

34.9. Tue Jun 13 2017

Affected Topic	Description of Change
Scheduler	Updated default scheduler policy in the Scheduler Policy section.

34.10. Thu May 25 2017

Affected Topic	Description of Change
Managing Security Context Constraints	Added a warning about pod creation on behalf of a user within the Grant Access to the Privileged SCC section.

34.11. Mon May 15 2017

Affected Topic	Description of Change
Garbage Collection	Updated the default value for the `maximum-dead-containers` setting in the Container Garbage Collection section.
Backup and Restore	Restored and updated steps for adding an etcd member.
High Availability	Removed numbering and added a title to Deploy IP Failover Pod in the Configuring a Highly-available Service section.

34.12. Tue May 02 2017

Affected Topic	Description of Change
Securing Builds by Strategy	Added that custom builds are disabled by default.

34.13. Wed Apr 12 2017

Affected Topic	Description of Change
Managing Security Context Constraints	Added information about preserving labels and annotations, in addition to groups.
Managing Nodes	Fixed markup error in the examples in the Setting Maximum Pods Per Node section.

34.14. Mon Mar 27 2017

Affected Topic	Description of Change
Setting Limit Ranges	Added the missing `-n demoproject` option to the `oc describe` limits example and updated the command’s output.
Backup and Restore	Updated the backup and restore procedure.

34.15. Mon Mar 20 2017

Affected Topic	Description of Change
Managing Nodes	Added the Setting Maximum Pods Per Node section.
Managing Authorization Policies	Updated the *ClusterRole* file in the Granting Users Daemonset Permissions section.

34.16. Tue Mar 14 2017

Affected Topic	Description of Change
Managing Nodes	Renamed instances of `openshift_node_set_node_ip` to `openshift_set_node_ip`, the correct `openshift-ansible` variable name.
Restricting Application Capabilities Using Seccomp	Updated Seccomp references of `runtime/default` to be `docker/default`.

34.17. Mon Mar 06 2017

Affected Topic	Description of Change
Encrypting Hosts with IPsec	Re-added the Encrypting Hosts with IPsec topic and made it specific to the current version of libreswan.
Managing Pods	Added information and arranged the Controlling Egress Traffic section.

34.18. Thu Feb 16 2017

Affected Topic	Description of Change
Managing Pods	Added more information about disabling MAC filtering for the Egress router.
Aggregating Container Logs	Added a requirement that port 9300 be open for Elasticsearch to the Pre-deployment Configuration section.
High Availability	Added a step for deploying the ipfailover router to monitor postgresql listening to the Configuring a Highly-available Service section

34.19. Mon Feb 06 2017

Affected Topic	Description of Change
Troubleshooting OpenShift SDN	Updated OpenShift SDN information.
Handling Out of Resource Errors	Added clarifying details around `kubeletArguments` in the Example Scenario section.

34.20. Wed Jan 25 2017

Affected Topic	Description of Change
Monitoring Routers	Removed references to the deprecated `--credentials` option.
High Availability	Removed references to the deprecated `--credentials` option.
Pruning Objects	Added a NOTE box to the Pruning Images section explaining that pruning images with the `--namespace` flag does not remove images.
Configuring the Cluster to Use Unique External IPs	Added a CAUTION box indicating that external IPs assigned to services of type `LoadBalancer` will always be in the range of `ingressIPNetworkCIDR` and updated Ingress CIDR references to the new default.
Managing Pods	Added clarifying details around `EgressNetworkPolicy`, including that it only affects external traffic (not pod-to-pod traffic) and that you can only have a single `EgressNetworkPolicy` in a namespace; added additional details about rule ordering and that breaking the rules can result in all egress traffic from the namespace being dropped.

34.21. Wed Jan 18 2017

OpenShift Container Platform 3.4 initial release.

Affected Topic	Description of Change
Managing Pods	Updated the `EgressNetworkPolicy` example in the Configuring Pod Access Limits section.
Managing Pods	Added a new Setting Pod Disruption Budgets section, which allows the specification of safety constraints on pods during operations.
Setting Quotas	Added information for the `requests.storage` value and a *storage-consumption.yaml* example.
Setting Limit Ranges	Updated the PVC limit range within the Limit Range Object Definition example.
Setting Limit Ranges	Added the PersistentVolumeClaim Limits section.
Pruning Objects	Added a new Image Pruning Problems section, which describes possible issues with image pruning and how to avoid them with more generic tag naming.
Handling Out of Resource Errors	Added information about disk-based eviction.

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