# Using EFS for persistent storage

**URL:** <https://forums.percona.com/t/using-efs-for-persistent-storage/13412>\
**Category:** PMM 2.x\
**Created:** [December 9, 2021, 11:03am UTC](https://forums.percona.com/t/using-efs-for-persistent-storage/13412 "2021-12-09T11:03:16Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![ashishps1](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@ashishps1](https://forums.percona.com/u/ashishps1)\
**Post date:** [December 9, 2021, 11:03am UTC](https://forums.percona.com/t/using-efs-for-persistent-storage/13412/1 "2021-12-09T11:03:16Z")

</div>

I am hosting PMM server on AWS ECS. In the process, I will be replacing ECS tasks. But ECS doesn’t support `docker create` command, hence I can’t create a data container.

So I am using EFS for persistent storage so that new tasks can access old data from EFS. But whenever I create new task and delete old one, it gives 500/502 errors.

Has anyone got PMM server to work with EFS?  
What configuration do I need to take care of?

---

<div class="post-metadata">

**Author:** ![Sergey\_Pronin](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/sergey_pronin/32/14887_2.png) [@Sergey\_Pronin](https://forums.percona.com/u/Sergey_Pronin)\
**Post date:** [December 9, 2021, 7:29pm UTC](https://forums.percona.com/t/using-efs-for-persistent-storage/13412/2 "2021-12-09T19:29:40Z")

</div>

Hello @ashishps1 ,

I don’t think we have tested ECS + EFS configuration. ECS tasks have various use cases, but usually I see them as something ephemeral or used for batch-processing.

I cannot think of any particular reason for 500/502 errors, but it is NFS and it can be anything 🙂

Could you please share your task definition? (don’t forget to strip sensitive data). We or someone in the community might try to reproduce it.  
You can get it with `aws ecs describe-task-definition --task-definition <TASK>`.

---

<div class="post-metadata">

**Author:** ![ashishps1](https://avatars.discourse-cdn.com/v4/letter/a/ebca7d/32.png) [@ashishps1](https://forums.percona.com/u/ashishps1)\
**Post date:** [December 10, 2021, 3:29am UTC](https://forums.percona.com/t/using-efs-for-persistent-storage/13412/3 "2021-12-10T03:29:58Z")

</div>

Here is the task definition I am using:

```auto
{
    "taskDefinition": {
        "taskDefinitionArn": "<arn>",
        "containerDefinitions": [
            {
                "name": "pmm",
                "image": "<ecr_image>",
                "cpu": 0,
                "memoryReservation": 1024,
                "portMappings": [
                    {
                        "containerPort": 443,
                        "hostPort": 443,
                        "protocol": "tcp"
                    }
                ],
                "essential": true,
                "environment": [],
                "mountPoints": [
                    {
                        "sourceVolume": "pmm-efs",
                        "containerPath": "/srv"
                    }
                ],
                "volumesFrom": [],
                "readonlyRootFilesystem": false,
                "logConfiguration": {
                    "logDriver": "awslogs",
                    "options": {
                        "awslogs-group": "/ecs/pmm/dev-productivity-20211206105022752900000001",
                        "awslogs-region": "us-west-2",
                        "awslogs-stream-prefix": "pmm-"
                    }
                }
            }
        ],
        "family": "pmm-dev-productivity-app",
        "taskRoleArn": "arn:aws:iam::<account_id>:role/pmm-task-role-20211206100923023800000001",
        "executionRoleArn": "arn:aws:iam::<account_id>:role/pmm-task-exec-role-20211122080554077800000001",
        "networkMode": "awsvpc",
        "revision": 6,
        "volumes": [
            {
                "name": "pmm-efs",
                "efsVolumeConfiguration": {
                    "fileSystemId": "fs-081ea8e6b2222eb2a",
                    "rootDirectory": "/",
                    "transitEncryption": "DISABLED",
                    "authorizationConfig": {
                        "iam": "DISABLED"
                    }
                }
            }
        ],
        "status": "ACTIVE",
        "requiresAttributes": [
            {
                "name": "com.amazonaws.ecs.capability.logging-driver.awslogs"
            },
            {
                "name": "ecs.capability.execution-role-awslogs"
            },
            {
                "name": "ecs.capability.efsAuth"
            },
            {
                "name": "com.amazonaws.ecs.capability.ecr-auth"
            },
            {
                "name": "com.amazonaws.ecs.capability.docker-remote-api.1.19"
            },
            {
                "name": "ecs.capability.efs"
            },
            {
                "name": "com.amazonaws.ecs.capability.docker-remote-api.1.21"
            },
            {
                "name": "com.amazonaws.ecs.capability.task-iam-role"
            },
            {
                "name": "com.amazonaws.ecs.capability.docker-remote-api.1.25"
            },
            {
                "name": "ecs.capability.execution-role-ecr-pull"
            },
            {
                "name": "com.amazonaws.ecs.capability.docker-remote-api.1.18"
            },
            {
                "name": "ecs.capability.task-eni"
            }
        ],
        "placementConstraints": [
            {
                "type": "memberOf",
                "expression": "attribute:market == spot"
            }
        ],
        "compatibilities": [
            "EC2"
        ],
        "requiresCompatibilities": [
            "EC2"
        ],
        "registeredAt": 1638787832.575,
        "registeredBy": "arn:aws:iam::<account_id>:user/asingh-api"
    }
}

```

I have pulled the image from [Docker Hub](https://hub.docker.com/r/percona/pmm-server) and saved in ECR. The version is 2.23.0.