Kubernetes/kubectl-“必须指定容器名称"但看起来是这样吗? [英] Kubernetes / kubectl - "A container name must be specified" but seems like it is?

问题描述

我正在调试来自kubectl的日志输出，指出:

I'm debugging log output from kubectl that states:

Error from server (BadRequest): a container name must be specified for pod postgres-operator-49202276-bjtf4, choose one of: [apiserver postgres-operator]

好的，这是一个解释性错误消息，但是看看我的JSON模板，它应该只创建两个指定的容器，对吗?我想念什么? (请原谅我的无知.)

OK, so that's an explanatory error message, but looking at my JSON template it ought to just create both containers specified, correct? What am I missing? (please forgive my ignorance.)

我仅使用标准的kubectl create -f命令在Shell脚本中创建JSON文件. JSON部署文件如下:

I'm using just a standard kubectl create -f command to create the JSON file within a shell script. The JSON deployment file is as follows:

{
    "apiVersion": "extensions/v1beta1",
    "kind": "Deployment",
    "metadata": {
        "name": "postgres-operator"
    },
    "spec": {
        "replicas": 1,
        "template": {
            "metadata": {
                "labels": {
                    "name": "postgres-operator"
                }
            },
            "spec": {
                "containers": [{
                    "name": "apiserver",
                    "image": "$CCP_IMAGE_PREFIX/apiserver:$CO_IMAGE_TAG",
                    "imagePullPolicy": "IfNotPresent",
                    "env": [{
                        "name": "DEBUG",
                        "value": "true"
                    }],
                    "volumeMounts": [{
                        "mountPath": "/config",
                        "name": "apiserver-conf",
                        "readOnly": true
                    }, {
                        "mountPath": "/operator-conf",
                        "name": "operator-conf",
                        "readOnly": true
                    }]
                }, {
                    "name": "postgres-operator",
                    "image": "$CCP_IMAGE_PREFIX/postgres-operator:$CO_IMAGE_TAG",
                    "imagePullPolicy": "IfNotPresent",
                    "env": [{
                        "name": "DEBUG",
                        "value": "true"
                    }, {
                        "name": "NAMESPACE",
                        "valueFrom": {
                            "fieldRef": {
                                "fieldPath": "metadata.namespace"
                            }
                        }
                    }, {
                        "name": "MY_POD_NAME",
                        "valueFrom": {
                            "fieldRef": {
                                "fieldPath": "metadata.name"
                            }
                        }
                    }],
                    "volumeMounts": [{
                        "mountPath": "/operator-conf",
                        "name": "operator-conf",
                        "readOnly": true
                    }]
                }],
                "volumes": [{
                    "name": "operator-conf",
                    "configMap": {
                        "name": "operator-conf"
                    }
                }, {
                    "name": "apiserver-conf",
                    "configMap": {
                        "name": "apiserver-conf"
                    }
                }]
            }
        }
    }
}

推荐答案

如果容器中有多个容器，则需要提供特定容器的名称.

If a pod has more than 1 containers then you need to provide the name of the specific container.

在您的情况下，有一个容器(postgres-operator-49202276-bjtf4)，其中有2个容器(apiserver和postgres-operator). 以下命令将提供特定容器的日志

in your case, There is a pod (postgres-operator-49202276-bjtf4) which has 2 containers (apiserver and postgres-operator ). following commands will provide logs for the specific containers

kubectl logs deployment/postgres-operator -c apiserver


kubectl logs deployment/postgres-operator -c postgres-operator

这篇关于Kubernetes/kubectl-“必须指定容器名称"但看起来是这样吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！