EUMETSAT is establishing a new set of data access services that will bring the full data catalog online.  Some more information can be found here: https://www.eumetsat.int/access-our-data.

Knowledge bases for each of the new data services can be found through this landing page: https://eumetsatspace.atlassian.net/wiki/spaces/EUM/overview

These services are provided on a best-effort basis. Even now the services are open, it will still take time to fully populate them. In addition, some selected datasets can be accessed from EWC VMs from the EWC object storage. Please contact us, if you need an additional data which is not provided in the Data Store. 

Option 1: Using EUMETSAT data services

To avoid duplication, the information on how to use the new data services can be found on the following links:

• General description of all the data services
• Direct link to the Data Store (catalogue and download service) documentation
• Direct link to the Data Tailor (format conversion service) documentation

In the future, it may become possible to directly access the object storage behind the Data Store for applications that need very high throughput (e.g. mass data processing).  Please contact us if you have tried the existing possibilities and believe you need this capability.

Option 2: Using EUMETSAT data buckets

Setting up your instance

In order to mount the buckets as filesystem, you need to create the Virtual Machine instances in the Morpheus UI. You can follow the Provision a new instance - web Knowledge Base Article to get started.

This article describes how to mount EUMETSAT data buckets as FUSE mounts. The possibility to mount the buckets into as filesystem is provided to as convenience. Readers are advised to note that mounting buckets via FUSE will provide significantly worse performance than accessing the data directly from workloads, for example using python.  Whenever possible, users are advised to use the buckets directly from the workloads.

Tenants having Morpheus account at EUMETSAT Morpheus, can mount the data buckets using ready workflow. This article describes how to run the workflow and how to mount the data manually. One can naturally use the same steps to any other buckets as well by modifying bucket name, service endpoint, credentials, and potentially project id.

Available EUMETSAT data buckets are listed below with the corresponding mount point in case of using ready workflow. You can get access keys for the data buckets from support.

EUMETSAT Data Buckets:

Using the Workflow

1. Go to instances and select the instance of interest
   
2. Select Actions → Run Workflow
   
   
3. Select Mount EUMETSAT databuckets from Workflow drop-down meny and click Execute. Command options are not needed.
   
   

You can then follow the workflow from the output or by going to Instance History tab. After the workflow is executed, you can access the data at /eumetsatdata.

Manual mount

Following steps are using ASCAT data as an example. Please modify the commands to mount any other bucket. 

1. Make sure you have latest rclone installed

   curl https://rclone.org/install.sh | sudo bash

2. Create mount directory, i.e. for ascat:

   sudo mkdir -p /eumetsatdata/ascat && sudo chown -R $USER:$USER /eumetsatdata/ascat && chmod 755 /eumetsatdata/ascat

3. Put rclone like listed below config into a config file. For example, into /etc/eum_bucket_creds (keys without brackets) 

   sudo sh -c "cat >>/etc/eum_bucket_creds <<-EOF
   [eumetsat-ascat]
   type = s3
   provider = Ceph
   endpoint = https://s3.waw3-1.cloudferro.com
   EOF

4. Now you can already mount the data with command:

   sudo rclone --config /etc/eum_bucket_creds mount --allow-other --daemon eumetsat-ascat:ascat.metop-abc.level-1b.native /eumetsatdata/ascat

Setting up a service

To have mount points available all the time and after reboots, one need to set up the service and add mount points into fstab.

1. Link rclone

   sudo ln -s /usr/bin/rclone /sbin/mount.rclone

2. Create systemd service:, for example for ascat:

   sudo sh -c "cat >>/etc/systemd/system/eum-data-ascat.service" <<-EOF
   [Unit]
   Description=Mount EUMETSAT data bucket ascat
   After=network-online.target
   
   [Mount]
   Type=rclone
   What=eumetsat-ascat:ascat.metop-abc.level-1b.native
   Where=/eumetsatdata/ascat
   Options=ro,allow_other,args2env,vfs-cache-mode=writes,config=/etc/eum_bucket_creds,cache-dir=/var/rclone,vfs-cache-max-size=512Mi,vfs-cache-poll-interval=30m'
   EOF

3. Add corresponding line into /etc/fstab:

   echo "eumetsat-ascat:ascat.metop-abc.level-1b.native /eumetsatdata/ascat rclone ro,noauto,nofail,x-systemd.automount,args2env,allow_other,vfs_cache_mode=writes,config=/etc/eum_bucket_creds,cache_dir=/var/cache/rclone,vfs-cache-max-size=512Mi,vfs-cache-poll-interval=30m 0 0" | sudo tee -a /etc/fstab

4. Mount the folder:

   sudo mount /eumetsatdata/ascat

Limitations

1. Access to the archive is read-only.
2. Only a limited subset of EUMETSAT data is available. Please contact us if you need something that is not currently there.

Related articles

• Page:
  s3 using Python libraries
• Page:
  How to access S3 buckets and perform actions
• Page:
  How to create S3 buckets in Morpheus
• Page:
  Provision a new instance - web
• Page:
  How to use EUMETCast Terrestrial on AMT