我创建了一个服务帐户并为该服务帐户创建了kubeconfig,但是当我运行kubectl --kubeconfig = sa.kubeconfig获取节点或获取吊舱时,我首先遇到了错误:>错误:You must be logged in to the server (Unauthorized).
现在,我收到消息error: the server doesn't have a resource type "svc"
。
这是创建sa,角色和角色绑定的yaml文件
apiVersion: v1
kind: ServiceAccount
metadata:
name: default-user
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: default-user
rules:
- apiGroups:
- '*'
resources:
- '*'
verbs:
- '*'
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: default-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: default-user
subjects:
- namespace: default
kind: ServiceAccount
name: default-user
然后我为服务帐户创建了kubeconfig文件。
# your server name goes here
server=https://<server.hcp.westeurope.azmk8s.io:443>
# the name of the secret containing the service account token goes here
name=<default-user-token>
ca=$(kubectl get secret/$name -o jsonpath='{.data.ca\.crt}')
token=$(kubectl get secret/$name -o jsonpath='{.data.token}' | base64)
namespace=$(kubectl get secret/$name -o jsonpath='{.data.namespace}' | base64)
echo "
apiVersion: v1
kind: Config
clusters:
- name: default-cluster
cluster:
certificate-authority-data: ${ca}
server: ${server}
contexts:
- name: default-context
context:
cluster: default-cluster
namespace: default
user: default-user
current-context: default-context
users:
- name: default-user
user:
token: ${token}
" > sa.kubeconfig
有人看到我在做什么错吗?
答案 0 :(得分:0)
这是为服务帐户创建配置文件的正确方法:
# your server name goes here
server=https://<server.hcp.westeurope.azmk8s.io:443>
# the name of the secret containing the service account token goes here
name=<default-user-token>
ca=$(kubectl get secret/$name -o jsonpath='{.data.ca\.crt}')
token=$(kubectl get secret/$name -o jsonpath='{.data.token}' | base64 -d)
namespace=$(kubectl get secret/$name -o jsonpath='{.data.namespace}' | base64 -d)
echo "
apiVersion: v1
kind: Config
clusters:
- name: default-cluster
cluster:
certificate-authority-data: ${ca}
server: ${server}
contexts:
- name: default-context
context:
cluster: default-cluster
namespace: ${namespace}
user: default-user
current-context: default-context
users:
- name: default-user
user:
token: ${token}
" > sa.kubeconfig
答案 1 :(得分:0)
用于创建服务帐户并为您创建配置文件的脚本:
#!/bin/bash
set -e
set -o pipefail
# Add user to k8s using service account, no RBAC (must create RBAC after this script)
if [[ -z "$1" ]] || [[ -z "$2" ]]; then
echo "usage: $0 <service_account_name> <namespace>"
exit 1
fi
SERVICE_ACCOUNT_NAME=$1
NAMESPACE="$2"
KUBECFG_FILE_NAME="/tmp/kube/k8s-${SERVICE_ACCOUNT_NAME}-${NAMESPACE}-conf"
TARGET_FOLDER="/tmp/kube"
create_target_folder() {
echo -n "Creating target directory to hold files in ${TARGET_FOLDER}..."
mkdir -p "${TARGET_FOLDER}"
printf "done"
}
create_service_account() {
echo -e "\\nCreating a service account in ${NAMESPACE} namespace: ${SERVICE_ACCOUNT_NAME}"
kubectl create sa "${SERVICE_ACCOUNT_NAME}" --namespace "${NAMESPACE}"
}
get_secret_name_from_service_account() {
echo -e "\\nGetting secret of service account ${SERVICE_ACCOUNT_NAME} on ${NAMESPACE}"
SECRET_NAME=$(kubectl get sa "${SERVICE_ACCOUNT_NAME}" --namespace="${NAMESPACE}" -o json | jq -r .secrets[].name)
echo "Secret name: ${SECRET_NAME}"
}
extract_ca_crt_from_secret() {
echo -e -n "\\nExtracting ca.crt from secret..."
kubectl get secret --namespace "${NAMESPACE}" "${SECRET_NAME}" -o json | jq \
-r '.data["ca.crt"]' | base64 -D > "${TARGET_FOLDER}/ca.crt"
printf "done"
}
get_user_token_from_secret() {
echo -e -n "\\nGetting user token from secret..."
USER_TOKEN=$(kubectl get secret --namespace "${NAMESPACE}" "${SECRET_NAME}" -o json | jq -r '.data["token"]' | base64 -D)
printf "done"
}
set_kube_config_values() {
context=$(kubectl config current-context)
echo -e "\\nSetting current context to: $context"
CLUSTER_NAME=$(kubectl config get-contexts "$context" | awk '{print $3}' | tail -n 1)
echo "Cluster name: ${CLUSTER_NAME}"
ENDPOINT=$(kubectl config view \
-o jsonpath="{.clusters[?(@.name == \"${CLUSTER_NAME}\")].cluster.server}")
echo "Endpoint: ${ENDPOINT}"
# Set up the config
echo -e "\\nPreparing k8s-${SERVICE_ACCOUNT_NAME}-${NAMESPACE}-conf"
echo -n "Setting a cluster entry in kubeconfig..."
kubectl config set-cluster "${CLUSTER_NAME}" \
--kubeconfig="${KUBECFG_FILE_NAME}" \
--server="${ENDPOINT}" \
--certificate-authority="${TARGET_FOLDER}/ca.crt" \
--embed-certs=true
echo -n "Setting token credentials entry in kubeconfig..."
kubectl config set-credentials \
"${SERVICE_ACCOUNT_NAME}-${NAMESPACE}-${CLUSTER_NAME}" \
--kubeconfig="${KUBECFG_FILE_NAME}" \
--token="${USER_TOKEN}"
echo -n "Setting a context entry in kubeconfig..."
kubectl config set-context \
"${SERVICE_ACCOUNT_NAME}-${NAMESPACE}-${CLUSTER_NAME}" \
--kubeconfig="${KUBECFG_FILE_NAME}" \
--cluster="${CLUSTER_NAME}" \
--user="${SERVICE_ACCOUNT_NAME}-${NAMESPACE}-${CLUSTER_NAME}" \
--namespace="${NAMESPACE}"
echo -n "Setting the current-context in the kubeconfig file..."
kubectl config use-context "${SERVICE_ACCOUNT_NAME}-${NAMESPACE}-${CLUSTER_NAME}" \
--kubeconfig="${KUBECFG_FILE_NAME}"
}
create_target_folder
create_service_account
get_secret_name_from_service_account
extract_ca_crt_from_secret
get_user_token_from_secret
set_kube_config_values
echo -e "\\nAll done! Test with:"
echo "KUBECONFIG=${KUBECFG_FILE_NAME} kubectl get pods"
echo "you should not have any permissions by default - you have just created the authentication part"
echo "You will need to create RBAC permissions"
KUBECONFIG=${KUBECFG_FILE_NAME} kubectl get pods