Updating a Containerized Application

Function

Updates containerized application information stored in MEF Center based on the specified containerized application ID. If a containerized application has been deployed, it will be updated after this API is called. Currently, only the container image name and version can be modified.

When MEF Center successfully updates a deployed containerized application, the daemonset resource of the application in Kubernetes is successfully updated. The actual update of an MEF Edge container needs to be confirmed by querying the application instance.

Syntax

Operation type: PATCH

URL: https://{ip}:{port}/edgemanager/v1/app

Request header:

Content-Type: application/json

Request message body:

{
    "appID": AppId,
    "appName": AppName,
    "containers": [
       {
           "name": ContainerName,
           "cpuRequest": CpuRequest,
           "cpuLimit": CpuLimit,
           "memRequest": MemoryRequest,
           "memLimit": MemoryLimit,
           "image": ImageName,
           "imageVersion": ImageVersion,
           "env": [
               {
                   "name": EnvVarName,
                   "value": EnvVarValue
               }
           ],
           "userID": UserId,
           "groupID": GroupId,
           "command": [
               Command
           ],
           "args" : [
               Argument
           ],
           "containerPort" : [
               {
                   "name" : PortName,
                   "proto" : PortProto,
                   "containerPort" : ContainerPort,
                   "hostIP" : HostIP,
                   "hostPort" : HostPort
               }
           ]
        }
    ],
    "description": Description
}

Request Parameters

For details about containerized application fields, see Request Parameters.

**Table 1** Description
Parameter	Mandatory/Optional	Description	Value
appID	Mandatory	Containerized application ID	The value is an integer ranging from 1 to 2^32-1. The application ID must exist.
appName	Mandatory	Name of a containerized application	The value is a string of 1 to 32 characters, including lowercase letters, digits, and hyphens (-). It must start and end with letters and digits.
description	Optional	Description of a containerized application	The value is a string of 0 to 512 characters. Whitespace characters except a space are not supported.
containers	Mandatory	Container configuration array	Object array. The array length ranges from 1 to 10.

**Table 2** containers description
Parameter	Mandatory/Optional	Description	Value
name	Mandatory	Containerized application name	The value is a string of 1 to 32 characters, including lowercase letters, digits, and hyphens (-). The value must start and end with a letter or digit. The container name must be unique.
cpuRequest	Mandatory	Number of CPU cores requested by a containerized application	The value is a number ranging from 0.01 to 1000 and accurate to two decimal places.
cpuLimit	Optional	Maximum number of CPU cores used by a containerized application	The value is a number ranging from 0.01 to 1000, accurate to two decimal places, and greater than or equal to cpuRequest.
memRequest	Mandatory	Size of the memory allocated by a containerized application	The value is an integer ranging from 4 to 1024000, in MiB.
memLimit	Optional	Maximum memory size used by a containerized application	The value is an integer ranging from 4 to 1024000, in MiB. The value must be greater than or equal to memRequest.
npu	Optional	Number of NPU cores allocated by a containerized application	The value is an integer ranging from 0 to 32.
image	Mandatory	Name of the image to be used. If a third-party image repository is used, the full name must contain the IP address or domain name of the image repository server, port number, project, and image name, for example, fd.fusiondirector.huawei.com:443/library/ubuntu. If you do not specify the host name and port number of the image, the containerized application uses the public Docker repository.	The value is a string of 1 to 256 characters, including lowercase letters, uppercase letters, digits, and special characters (:-._/).
imageVersion	Mandatory	Image version	The value is a string of 1 to 32 characters, including lowercase letters, uppercase letters, digits, and special characters (-._).
env	Optional	Environment variables configured in a containerized application	EnvVar object array. A maximum of 256 key-value pairs are supported.
userID	Optional	User ID specified for running a containerized application If this parameter is not set, the user who creates the image runs a containerized application. If the user is not a numeric ID or the numeric ID is 0, the containerized application fails to run after being deployed. To run an inference containerized application, the driver device is required. In this case, the user ID cannot be configured.	The value is a number ranging from 1 to 65535 and cannot be set to 0. That is, a container cannot be run by the root user. When deploying an inference containerized application, set userID to the user ID (usually 1000) of HwHiAiUser.
groupID	Optional	Group ID specified for running a containerized application If this parameter is not set, the user group who creates the image runs a containerized application. If the user is not a numeric group ID or the numeric group ID is 0, the containerized application fails to run after being deployed. To run an inference containerized application, the driver device is required. In this case, the group ID cannot be configured.	The value is a number ranging from 1 to 65535 and cannot be set to 0. That is, a containerized application cannot be run by the root group. When deploying an inference containerized application, set groupID to the group ID (usually 1000) of HwHiAiUser.
command	Optional	Command executed for starting a containerized application	Character string array. The command list supports a maximum of 16 commands. Each command contains 1 to 256 characters, including lowercase letters, uppercase letters, lowercase letters, digits, spaces, and spacial characters (-/._). The command must end with a letter or digit.
args	Optional	Command parameters for starting a containerized application	Character string array. The parameter list supports a maximum of 16 parameters. Each parameter contains 1 to 256 characters, including lowercase letters, uppercase letters, digits, spaces, and spacial characters (-/._=). The parameter must end with a letter or digit.
containerPort	Optional	Host port and intra-container port mapping configured for a containerized application	ContainerPort object array. A maximum of 16 groups of ports are supported.
hostPathVolumes	Optional	Mounting path configuration of a containerized application When creating an inference containerized application, you need to configure the mounting path. Otherwise, the application may fail to run.	HostPathVolumes object array. A maximum of 256 groups are supported.

**Table 3** containerPort description
Parameter	Mandatory/Optional	Description	Value
name	Mandatory	Port mapping name	The value is a string of 1 to 32 characters, including lowercase letters, digits, and hyphens (-). It must start and end with a lowercase letter or digit.
proto	Mandatory	Network transport layer protocol specified by port mapping	Character string. The value can be TCP or UDP.
containerPort	Mandatory	Port in a containerized application	The value is an integer ranging from 1 to 65535.
hostIP	Mandatory	IP address of the host bound for port mapping	The value is a character string and must be a valid host IP address. Only IPv4 addresses are supported. The value cannot be all 0s or all 255s.
hostPort	Mandatory	Host port address for port mapping	The value is an integer ranging from 1024 to 65535.

**Table 4** envVar description
Parameter	Mandatory/Optional	Description	Value
name	Mandatory	Name of an environment variable	The value is a string of 2 to 32 characters, including uppercase letters, lowercase letters, digits, and spacial characters (-._). It must start with a letter and end with a letter or digit.
value	Mandatory	Value of an environment variable	The value is a string of 1 to 512 characters, including uppercase letters, lowercase letters, digits, spacial characters (-._/:), and spaces.

**Table 5** hostPathVolumes description
Parameter	Mandatory/Optional	Description	Value
name	Mandatory	Name of the volume to be attached	The value is a string of 1 to 32 characters, including lowercase letters, digits, and hyphens (-). It must start and end with a letter or digit. The name of the volume mounted to the same containerized application must be unique.
hostPath	Mandatory	Host path used by a containerized application to mount volumes NOTE: Only the host paths of the listed files or directories can be configured. If you create a container image by referring to Creating an Inference Image or Atlas 200I A2 Accelerator Module Ascend Software Quick Installation Guide, see "Creating a Container Image > Starting a Container".	Only the host paths to which the following files or directories are mounted can be configured: "/etc/sys_version.conf" "/etc/hdcBasic.cfg" "/usr/lib64/libaicpu_processer.so" "/usr/lib64/libaicpu_prof.so" "/usr/lib64/libaicpu_sharder.so" "/usr/lib64/libadump.so" "/usr/lib64/libtsd_eventclient.so" "/usr/lib64/libaicpu_scheduler.so" libcrypto.so.1.1 Ubuntu host OS: "/usr/lib/aarch64-linux-gnu/libcrypto.so.1.1" openEuler host OS: "/usr/lib64/libcrypto.so.1.1.1m" libyaml-0.so.2 Ubuntu host OS: "/usr/lib/aarch64-linux-gnu/libyaml-0.so.2.0.6" openEuler host OS: "/usr/lib64/libyaml-0.so.2.0.9" "/usr/lib64/libdcmi.so" "/usr/lib64/libmpi_dvpp_adapter.so" "/usr/lib64/aicpu_kernels/" "/usr/local/sbin/npu-smi" "/usr/lib64/libstackcore.so" "/usr/local/Ascend/driver/lib64" "/var/slogd" "/var/dmp_daemon"
mountPath	Mandatory	Mounting path of a container	The path must start with a slash (/) and then be followed by uppercase letters, lowercase letters, digits, and spacial characters (_./-). The path cannot contain two consecutive periods (..). The total length of the path is 2 to 512 characters. The mounting path names in the same container must be unique.

Usage Example

Request:

PATCH https://10.10.10.10:30035/edgemanager/v1/app

Request message body:

{
    "appID": 3,
    "appName": "mef-apptest1",
    "containers": [
        {
            "name": "container1",
            "cpuRequest": 1,
            "cpuLimit": 1,
            "memRequest": 200,
            "memLimit": 200,
            "image": "ubuntu",
            "imageVersion": "18.04",
            "env": [
                {
                    "name": "lib",
                    "value": "/test"
                }
            ],
            "userId": 1001,
            "groupId": 1001,
            "command": [
                "/bin/bash","-c"
            ],
            "args" : [
                "sleep 30000"
            ],
            "containerPort" : [
                {
                    "name" : "test-port",
                    "proto" : "TCP",
                    "containerPort" : 1234,
                    "hostIP" : "xx.xx.xx.xx",
                    "hostPort" : 30023
                }
            ],
           "hostPathVolumes":[
           ]
        }
    ],
    "description": "a test case for app-manager"
}

Response:

{
    "status":"00000000",
    "msg":"success"
}

Response status code: 200

Output Description

**Table 6** Operation output description
Parameter	Type	Description
status	String	Error code
msg	String	Description

Parent topic: Containerized Application Management APIs