Revert "Update k8s tests and libraries to v1.27.0"

This reverts commit a19558d.

The k8s-upstream CI job is consistently failing since we merged this.
Let's revert.

Signed-off-by: Paul Chaignon <paul@cilium.io>

Documentation/contributing/development/dev_setup.rst

@@ -609,7 +609,7 @@ Minor version
 #. Provision a new dev VM to check if the provisioning scripts work correctly
    with the new k8s version.
 
-#. Run ``git add vendor/ test/provision/manifest/ Documentation/ && git commit -sam "Update k8s tests and libraries to v1.28.0-rc.0"``
+#. Run ``git add vendor/ test/provision/manifest/ Documentation/ && git commit -sam "Update k8s tests and libraries to v1.27.0-rc.0"``
 
 #. Submit all your changes into a new PR.
 

Documentation/contributing/testing/e2e.rst

@@ -140,7 +140,6 @@ The Kubernetes tests support the following Kubernetes versions:
 * 1.24
 * 1.25
 * 1.26
-* 1.27
 
 By default, the Vagrant VMs are provisioned with Kubernetes 1.23. To run with any other
 supported version of Kubernetes, run the test suite with the following format:

Documentation/network/istio.rst

@@ -92,7 +92,7 @@ Download the `cilium enhanced istioctl version 1.10.6-1 <https://github.com/cili
 .. note::
 
    Cilium integration, as presented in this Getting Started Guide, has
-   been tested with Kubernetes releases 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, and 1.27.
+   been tested with Kubernetes releases 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, and 1.26.
    This Istio release does not work with Kubernetes 1.16 or older.
 
 Deploy the default Istio configuration profile onto Kubernetes:

Documentation/network/kubernetes/compatibility.rst

@@ -17,12 +17,12 @@ with Cilium. Older Kubernetes versions not listed in this table do not have
 Cilium support. Newer Kubernetes versions, while not listed, will depend on the
 backward compatibility offered by Kubernetes.
 
-+------------------------------------------------------------------------+---------------------------+----------------------------------+
-| k8s Version                                                            | k8s NetworkPolicy API     | CiliumNetworkPolicy              |
-+------------------------------------------------------------------------+---------------------------+----------------------------------+
-|                                                                        |                           | ``cilium.io/v2`` has a           |
-| 1.16, 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.27 | * `networking.k8s.io/v1`_ | :term:`CustomResourceDefinition` |
-+------------------------------------------------------------------------+---------------------------+----------------------------------+
++------------------------------------------------------------------+---------------------------+----------------------------------+
+| k8s Version                                                      | k8s NetworkPolicy API     | CiliumNetworkPolicy              |
++------------------------------------------------------------------+---------------------------+----------------------------------+
+|                                                                  |                           | ``cilium.io/v2`` has a           |
+| 1.16, 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26 | * `networking.k8s.io/v1`_ | :term:`CustomResourceDefinition` |
++------------------------------------------------------------------+---------------------------+----------------------------------+
 
 Cilium CRD schema validation
 ============================

Documentation/network/kubernetes/requirements.rst

@@ -29,7 +29,6 @@ backward compatibility offered by Kubernetes.
 * 1.24
 * 1.25
 * 1.26
-* 1.27
 
 System Requirements
 ===================

contrib/vagrant/deployments/coredns-controller.yaml

@@ -1,5 +1,5 @@
 # File source with modifications to the coredns corefile
-# https://raw.githubusercontent.com/kubernetes/kubernetes/release-1.27/cluster/addons/dns/coredns/coredns.yaml.base
+# https://raw.githubusercontent.com/kubernetes/kubernetes/release-1.26/cluster/addons/dns/coredns/coredns.yaml.base
 # __MACHINE_GENERATED_WARNING__
 
 apiVersion: apps/v1
@@ -52,7 +52,7 @@ spec:
         kubernetes.io/os: linux
       containers:
       - name: coredns
-        image: registry.k8s.io/coredns/coredns:v1.10.1
+        image: registry.k8s.io/coredns/coredns:v1.9.3
         imagePullPolicy: IfNotPresent
         resources:
           limits:

contrib/vagrant/scripts/helpers.bash

@@ -67,8 +67,8 @@ cluster_dns_ipv6=${K8S_CLUSTER_DNS_IPV6:-"FD03::A"}
 cluster_api_server_ipv4=${K8S_CLUSTER_API_SERVER_IPV4:-"172.20.0.1"}
 cluster_api_server_ipv6=${K8S_CLUSTER_API_SERVER_IPV6:-"FD03::1"}
 
-k8s_version="v1.27.0"
-etcd_version="v3.5.7"
+k8s_version="v1.26.0-rc.0"
+etcd_version="v3.5.5"
 
 function restore_flag {
   check_num_params "$#" "2"

go.mod

@@ -62,7 +62,7 @@ require (
 	github.com/miekg/dns v1.1.43
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/onsi/ginkgo v1.16.5
-	github.com/onsi/gomega v1.27.6
+	github.com/onsi/gomega v1.27.2
 	github.com/osrg/gobgp/v3 v3.13.0
 	github.com/pmezard/go-difflib v1.0.0
 	github.com/prometheus/client_golang v1.15.0
@@ -110,16 +110,16 @@ require (
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
 	gopkg.in/ini.v1 v1.67.0
 	gopkg.in/yaml.v3 v3.0.1
-	k8s.io/api v0.27.0
-	k8s.io/apiextensions-apiserver v0.27.0
-	k8s.io/apimachinery v0.27.0
-	k8s.io/client-go v0.27.0
-	k8s.io/code-generator v0.27.0
-	k8s.io/klog/v2 v2.90.1
-	k8s.io/kube-openapi v0.0.0-20230308215209-15aac26d736a
-	k8s.io/utils v0.0.0-20230209194617-a36077c30491
-	sigs.k8s.io/controller-runtime v0.13.1-0.20230412014630-a33d038b84d0
-	sigs.k8s.io/controller-tools v0.11.3
+	k8s.io/api v0.26.0
+	k8s.io/apiextensions-apiserver v0.26.0
+	k8s.io/apimachinery v0.26.0
+	k8s.io/client-go v0.26.0
+	k8s.io/code-generator v0.26.0
+	k8s.io/klog/v2 v2.80.1
+	k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280
+	k8s.io/utils v0.0.0-20221128185143-99ec85e7a448
+	sigs.k8s.io/controller-runtime v0.14.1
+	sigs.k8s.io/controller-tools v0.7.0
 	sigs.k8s.io/gateway-api v0.6.0
 	sigs.k8s.io/yaml v1.3.0
 )
@@ -165,15 +165,15 @@ require (
 	github.com/go-kit/kit v0.12.0 // indirect
 	github.com/go-kit/log v0.2.1 // indirect
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
-	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-openapi/analysis v0.21.4 // indirect
-	github.com/go-openapi/jsonpointer v0.19.6 // indirect
-	github.com/go-openapi/jsonreference v0.20.1 // indirect
+	github.com/go-openapi/jsonpointer v0.19.5 // indirect
+	github.com/go-openapi/jsonreference v0.20.0 // indirect
 	github.com/gobuffalo/flect v0.2.3 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
-	github.com/golang-jwt/jwt/v4 v4.4.2 // indirect
+	github.com/golang-jwt/jwt/v4 v4.2.0 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
@@ -222,7 +222,7 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
 	github.com/prometheus/common v0.42.0 // indirect
-	github.com/rogpeppe/go-internal v1.10.0 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/rootless-containers/rootlesskit v1.1.0 // indirect
 	github.com/spf13/afero v1.9.5 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
@@ -245,10 +245,10 @@ require (
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	k8s.io/component-base v0.27.0 // indirect
+	k8s.io/component-base v0.26.0 // indirect
 	k8s.io/gengo v0.0.0-20230306165830-ab3349d207d4 // indirect
 	k8s.io/klog v1.0.0 // indirect
-	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 )