Deprecate old OS versions

kubernetes · Jun 5, 2021 · b513939 · b513939
1 parent 32d775b
commit b513939
Show file tree

Hide file tree

Showing 3 changed files with 77 additions and 71 deletions.
diff --git a/docs/operations/images.md b/docs/operations/images.md
@@ -36,18 +36,18 @@ The following table provides the support status for various distros with regards
 | Distro | Experimental | Stable | Deprecated | Removed | 
 | ------------ | -----------: | -----: | ---------: | ------: |
 | [Amazon Linux 2](#amazon-linux-2) | 1.10 | 1.18 | - | - |
-| [CentOS 7](#centos-7) | - | 1.5 | - | - |
+| [CentOS 7](#centos-7) | - | 1.5 | 1.21 | - |
 | [CentOS 8](#centos-8) | 1.15 | - | - | - |
 | [CoreOS](#coreos) | 1.6 | 1.9 | 1.17 | 1.18 |
 | [Debian 8](#debian-8-jessie) | - | 1.5 | 1.17 | 1.18 |
-| [Debian 9](#debian-9-stretch) | 1.8 | 1.10 | - | - |
+| [Debian 9](#debian-9-stretch) | 1.8 | 1.10 | 1.21 | - |
 | [Debian 10](#debian-10-buster) | 1.13 | 1.17 | - | - |
 | [Flatcar](#flatcar) | 1.15.1 | 1.17 | - | - |
 | [Kope.io](#kopeio) | - | - | 1.18 | - |
-| [RHEL 7](#rhel-7) | - | 1.5 | - | - |
+| [RHEL 7](#rhel-7) | - | 1.5 | 1.21 | - |
 | [RHEL 8](#rhel-8) | 1.15 | 1.18 | - | - |
 | [Ubuntu 16.04](#ubuntu-1604-xenial) | 1.5 | 1.10 | 1.17 | 1.20 |
-| [Ubuntu 18.04](#ubuntu-1804-bionic) | 1.10 | 1.16 | - | - |
+| [Ubuntu 18.04](#ubuntu-1804-bionic) | 1.10 | 1.16 | 1.21 | - |
 | [Ubuntu 20.04](#ubuntu-2004-focal) | 1.16.2 | 1.18 | - | - |
 
 ## Supported Distros
@@ -67,22 +67,6 @@ aws ec2 describe-images --region us-east-1 --output table \
   --filters "Name=name,Values=amzn2-ami-hvm-2*-x86_64-gp2"
 ```
 
-### CentOS 7
-
-CentOS 7 is based on Kernel version **3.10** which has a considerable number of known bugs that affect it and may be noticed in production clusters:
-
-* [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
-* [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
-
-The minimum supported version is **7.4**. Available images can be listed using:
-
-```bash
-aws ec2 describe-images --region us-east-1 --output table \
-  --owners 125523088429 \
-  --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
-  --filters "Name=name,Values=CentOS 7.*x86_64"
-```
-
 ### CentOS 8
 
 CentOS 8 is based on Kernel version **4.18** which fixes some of the bugs present in RHEL/CentOS 7 and effects are less visible.
@@ -98,24 +82,6 @@ aws ec2 describe-images --region us-east-1 --output table \
   --filters "Name=name,Values=CentOS 8.*x86_64"
 ```
 
-### Debian 9 (Stretch)
-
-Debian 9 is based on Kernel version **4.9** which has a number of known bugs that affect it and which may be noticed with larger clusters:
-
-This release is **EOL**, which means that the Debian Security Team no longer handles security fixes. That is now the responsibility/purview of the LTS team, which is a group of volunteers who are paid by donations to Debian LTS.
-
-* [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
-* [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
-
-Available images can be listed using:
-
-```bash
-aws ec2 describe-images --region us-east-1 --output table \
-  --owners 379101102735 \
-  --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
-  --filters "Name=name,Values=debian-stretch-hvm-x86_64-gp2-*"
-```
-
 ### Debian 10 (Buster)
 
 Debian 10 is based on Kernel version **4.19** which fixes some of the bugs present in Debian 9 and effects are less visible.
@@ -156,87 +122,111 @@ aws ec2 describe-images --region us-east-1 --output table \
   --filters "Name=name,Values=Flatcar-stable-*-hvm"
 ```
 
-### RHEL 7
+### RHEL 8
 
-RHEL 7 is based on Kernel version **3.10** which has a considerable number of known bugs that affect it and may be noticed in production clusters:
+RHEL 8 is based on Kernel version **4.18** which fixes some of the bugs present in RHEL/CentOS 7 and effects are less visible.
 
-* [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
-* [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
+One notable change is the addition of `iptables` NFT, which is the only iptables backend available. This may not be supported by some CNI plugins and should be used with care.
 
-The minimum supported version is **7.4**. Available images can be listed using:
+Available images can be listed using:
 
 ```bash
 aws ec2 describe-images --region us-east-1 --output table \
   --owners 309956199498 \
   --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
-  --filters "Name=name,Values=RHEL-7.*x86_64*"
+  --filters "Name=name,Values=RHEL-8.*x86_64*"
 ```
 
-### RHEL 8
-
-RHEL 8 is based on Kernel version **4.18** which fixes some of the bugs present in RHEL/CentOS 7 and effects are less visible.
+### Ubuntu 20.04 (Focal)
 
-One notable change is the addition of `iptables` NFT, which is the only iptables backend available. This may not be supported by some CNI plugins and should be used with care.
+Ubuntu 20.04 is based on Kernel version **5.4** which fixes all the known major Kernel bugs.
 
 Available images can be listed using:
 
 ```bash
 aws ec2 describe-images --region us-east-1 --output table \
-  --owners 309956199498 \
+  --owners 099720109477 \
   --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
-  --filters "Name=name,Values=RHEL-8.*x86_64*"
+  --filters "Name=name,Values=ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-*"
 ```
 
-### Ubuntu 18.04 (Bionic)
+## Deprecated Distros
 
-Ubuntu 18.04 is based on Kernel version **4.15** which has a number of known bugs that affect it and which may be noticed with larger clusters:
+### CentOS 7
+
+CentOS 7 is based on Kernel version **3.10** which has a considerable number of known bugs that affect it and may be noticed in production clusters:
 
 * [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
 * [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
 
-Available images can be listed using:
+The minimum supported version is **7.4**. Available images can be listed using:
 
 ```bash
 aws ec2 describe-images --region us-east-1 --output table \
-  --owners 099720109477 \
+  --owners 125523088429 \
   --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
-  --filters "Name=name,Values=ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-*"
+  --filters "Name=name,Values=CentOS 7.*x86_64"
 ```
 
-### Ubuntu 20.04 (Focal)
+### Debian 9 (Stretch)
 
-Ubuntu 20.04 is based on Kernel version **5.4** which fixes all the known major Kernel bugs.
+Debian 9 is based on Kernel version **4.9** which has a number of known bugs that affect it and which may be noticed with larger clusters:
+
+This release is **EOL**, which means that the Debian Security Team no longer handles security fixes. That is now the responsibility/purview of the LTS team, which is a group of volunteers who are paid by donations to Debian LTS.
+
+* [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
+* [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
 
 Available images can be listed using:
 
 ```bash
 aws ec2 describe-images --region us-east-1 --output table \
-  --owners 099720109477 \
+  --owners 379101102735 \
   --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
-  --filters "Name=name,Values=ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-*"
+  --filters "Name=name,Values=debian-stretch-hvm-x86_64-gp2-*"
 ```
 
-## Deprecated Distros
-
-### CoreOS
+### Kope.io
 
-Support for CoreOS was removed in kOps 1.18.
+Support for _kope.io_ images is deprecated. These images were the default until Kubernetes 1.18, when they were replaced by the [official Ubuntu 20.04](#ubuntu-2004-focal) images. 
 
-You should consider using [Flatcar](#flatcar) as a replacement.
+The _kope.io_ images were based on [Debian 9 (Stretch)](#debian-9-stretch) and had all packages required by kOps pre-installed. Other than that, the changes to the official Debian images were [minimal](https://github.com/kubernetes-sigs/image-builder/blob/master/images/kube-deploy/imagebuilder/templates/1.18-stretch.yml#L174-L198).
 
-### Debian 8 (Jessie)
+### RHEL 7
 
-Support for Debian 8 (Jessie) was removed in kOps 1.18.
+RHEL 7 is based on Kernel version **3.10** which has a considerable number of known bugs that affect it and may be noticed in production clusters:
 
-### Kope.io
+* [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
+* [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
 
-Support for _kope.io_ images is deprecated. These images were the default until Kubernetes 1.18, when they were replaced by the [official Ubuntu 20.04](#ubuntu-2004-focal) images. 
+The minimum supported version is **7.4**. Available images can be listed using:
 
-The _kope.io_ images were based on [Debian 9 (Stretch)](#debian-9-stretch) and had all packages required by kOps pre-installed. Other than that, the changes to the official Debian images were [minimal](https://github.com/kubernetes-sigs/image-builder/blob/master/images/kube-deploy/imagebuilder/templates/1.18-stretch.yml#L174-L198).
+```bash
+aws ec2 describe-images --region us-east-1 --output table \
+  --owners 309956199498 \
+  --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
+  --filters "Name=name,Values=RHEL-7.*x86_64*"
+```
 
 ### Ubuntu 16.04 (Xenial)
 
-Support for Ubuntu 16.04 (Xenial) is deprecated and will be removed in kOps 1.20.
+Support for Ubuntu 16.04 (Xenial) was removed in kOps 1.20.
+
+### Ubuntu 18.04 (Bionic)
+
+Ubuntu 18.04 is based on Kernel version **4.15** which has a number of known bugs that affect it and which may be noticed with larger clusters:
+
+* [kubernetes/kubernetes#56903](https://github.com/kubernetes/kubernetes/issues/56903)
+* [kubernetes/kubernetes#67577](https://github.com/kubernetes/kubernetes/issues/67577)
+
+Available images can be listed using:
+
+```bash
+aws ec2 describe-images --region us-east-1 --output table \
+  --owners 099720109477 \
+  --query "sort_by(Images, &CreationDate)[*].[CreationDate,Name,ImageId]" \
+  --filters "Name=name,Values=ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-*"
+```
 
 ## Owner aliases 
 

diff --git a/docs/releases/1.21-NOTES.md b/docs/releases/1.21-NOTES.md
@@ -44,10 +44,18 @@ See the [warm pool](https://kops.sigs.k8s.io/instance_groups/#warmpool-aws-only)
 
 # Deprecations
 
-* Support for Kubernetes versions 1.15 and 1.16 are deprecated and will be removed in kOps 1.22.
+* Support for Kubernetes versions 1.15 and 1.16 is deprecated and will be removed in kOps 1.22.
 
 * Support for Kubernetes version 1.17 is deprecated and will be removed in kOps 1.23.
 
+* Support for CentOS 7 is deprecated and will be removed in future versions of kOps.
+
+* Support for Debian 9 (Stretch) is deprecated and will be removed in future versions of kOps.
+
+* Support for RHEL 7 is deprecated and will be removed in future versions of kOps.
+
+* Support for Ubuntu 18.04 (Bionic) is deprecated and will be removed in future versions of kOps.
+
 * The legacy location for downloads `s3://https://kubeupv2.s3.amazonaws.com/kops/` has been deprecated and will not be used as of kOps 1.22. The new canonical downloads location is `https://artifacts.k8s.io/binaries/kops/`.
 
 * The [manifest based metrics server addon](https://github.com/kubernetes/kops/tree/master/addons/metrics-server) has been deprecated in favour of a configurable addon.

diff --git a/docs/releases/1.22-NOTES.md b/docs/releases/1.22-NOTES.md
@@ -22,6 +22,14 @@ This is a document to gather the release notes prior to the release.
 
 * Support for Kubernetes version 1.18 is deprecated and will be removed in kOps 1.24.
 
+* Support for CentOS 7 is deprecated and will be removed in future versions of kOps.
+
+* Support for Debian 9 (Stretch) is deprecated and will be removed in future versions of kOps.
+
+* Support for RHEL 7 is deprecated and will be removed in future versions of kOps.
+
+* Support for Ubuntu 18.04 (Bionic) is deprecated and will be removed in future versions of kOps.
+
 * The [manifest based metrics server addon](https://github.com/kubernetes/kops/tree/master/addons/metrics-server) has been deprecated in favour of a configurable addon.
 
 * The [manifest based cluster autoscaler addon](https://github.com/kubernetes/kops/tree/master/addons/cluster-autoscaler) has been deprecated in favour of a configurable addon.