**To describe container instance**
The following ``describe-container-instances`` example retrieves details for a container instance in the ``update`` cluster, using the container instance UUID as an identifier. ::
aws ecs describe-container-instances \
--cluster update \
--container-instances a1b2c3d4-5678-90ab-cdef-11111EXAMPLE
Output::
{
"failures": [],
"containerInstances": [
{
"status": "ACTIVE",
"registeredResources": [
{
"integerValue": 2048,
"longValue": 0,
"type": "INTEGER",
"name": "CPU",
"doubleValue": 0.0
},
{
"integerValue": 3955,
"longValue": 0,
"type": "INTEGER",
"name": "MEMORY",
"doubleValue": 0.0
},
{
"name": "PORTS",
"longValue": 0,
"doubleValue": 0.0,
"stringSetValue": [
"22",
"2376",
"2375",
"51678"
],
"type": "STRINGSET",
"integerValue": 0
}
],
"ec2InstanceId": "i-A1B2C3D4",
"agentConnected": true,
"containerInstanceArn": "arn:aws:ecs:us-west-2:123456789012:container-instance/a1b2c3d4-5678-90ab-cdef-11111EXAMPLE",
"pendingTasksCount": 0,
"remainingResources": [
{
"integerValue": 2048,
"longValue": 0,
"type": "INTEGER",
"name": "CPU",
"doubleValue": 0.0
},
{
"integerValue": 3955,
"longValue": 0,
"type": "INTEGER",
"name": "MEMORY",
"doubleValue": 0.0
},
{
"name": "PORTS",
"longValue": 0,
"doubleValue": 0.0,
"stringSetValue": [
"22",
"2376",
"2375",
"51678"
],
"type": "STRINGSET",
"integerValue": 0
}
],
"runningTasksCount": 0,
"versionInfo": {
"agentVersion": "1.0.0",
"agentHash": "4023248",
"dockerVersion": "DockerVersion: 1.5.0"
}
}
]
}
For more information, see `Amazon ECS Container Instances <https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ECS_instances.html>`_ in the *Amazon ECS Developer Guide*.