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Cloud Information provider

[Packaging [Python tests GitHub release

The Cloud Information provider generates a representation of cloud resources, that can be published by different systems, like a BDII (using the provided LDIF templates for GlueSchema representation) or any other component like the INDIGO Configuration Management Database (CMDB) (Using specific JSON templates).

The provider extracts information from a cloud deployment using its public API and formats it according to Mako templates.

Currently supported cloud middleware:

  • OpenNebula/rOCCI
  • OpenStack
  • OpenStack/ooi

Acknowledgement

This work is co-funded by the EOSC-hub project (Horizon 2020) under Grant number 777536.

Installation

From binaries

Packages are always attached to the releases page in GitHub and after they are made available at EGI's AppDB. AppDB providers package repositores ready to be used with yum or apt.

Packages having gone through a the EGI CMD Stagged Rollout and SQA process are available in the CMD repositories.

Use the appropriate repository for your distribution and install using the OS-specific tools.

Dependencies are maintained in the requirements.txt file. Binary packages already include those dependencies (RH based distributions need to enable the EPEL repository).

For running the provider in a production environment with a BDII you will also need the bdii package (available in Ubuntu/Debian repos, in EPEL for RH based distros it is in EPEL).

Providers-specific metapackages bring a convenient way to install the tool as they depend on the main cloud-info-provider package (common to all providers) and on any extra provider-specific dependencies.

Available packages

RPMs:

  • cloud-info-provider-openstack
  • cloud-info-provider-opennebula
  • cloud-info-provider

debs:

  • python-cloud-info-provider-openstack
  • python-cloud-info-provider-opennebula
  • python-cloud-info-provider

From source

Using pip

Source-based installation is not recommended for production usage, but is very handy for testing or development purpose. Get the source by cloning this repo and do a pip install.

As pip will have to copy files to /etc/cloud-info-provider directory, the installation user should be able to write to it, so it is recommended to create it before using pip.

sudo mkdir /etc/cloud-info-provider
sudo chgrp you_user /etc/cloud-info-provider
sudo chmod g+rwx /etc/cloud-info-provider
git clone https://github.com/EGI-Federation/cloud-info-provider
cd cloud-info-provider
pip install .
Provider dependencies

The OpenStack/ooi providers require the following extra libraries:

  • python-keystoneclient
  • python-novaclient
  • python-glanceclient

These are not installed by default.

Building the packages using docker containers

python-pbr is used for building the python module and is available through the OpenStack repositories.

The version is set according to the repository information (tags, commits,...).

Building RPMs
  • The OpenStack repositories are only used to get the python-pbr build dependency that is required to build the cloud-info-provider package.
  • On CentOS 6 install centos-release-openstack instead of centos-release-openstack-newton.
# Checkout tag to be packaged
git clone https://github.com/EGI-Federation/cloud-info-provider.git
cd cloud-info-provider
git checkout X.X.X
# Create a source tarball
python setup.py sdist
mkdir ~/rpmbuild
# Building in a container using the tarball
docker run --rm -v $(pwd):/source -v $HOME/rpmbuild:/root/rpmbuild -it centos:7
yum install -y rpm-build
# Required only for cloud-info-provider package to build python package
# Will configure repository containing python-pbr
yum install -y centos-release-openstack-newton
# Required only for cloud-info-provider package to build python package
yum install -y python-pbr python-setuptools
echo '%_topdir %(echo $HOME)/rpmbuild' > ~/.rpmmacros
mkdir -p ~/rpmbuild/{SOURCES,SPECS}
cp /source/dist/cloud_info_provider-*.tar.gz ~/rpmbuild/SOURCES/
cp /source/rpm/cloud-info-provider-*.spec ~/rpmbuild/SPECS/
rpmbuild -ba ~/rpmbuild/SPECS/cloud-info-provider.spec
rpmbuild -ba ~/rpmbuild/SPECS/cloud-info-provider-openstack.spec
rpmbuild -ba ~/rpmbuild/SPECS/cloud-info-provider-opennebula.spec

The RPM will be available into the ~/rpmbuild directory.

Building a deb
# Checkout tag to be packaged
git clone https://github.com/EGI-Federation/cloud-info-provider.git
cd cloud-info-provider
git checkout X.X.X
mkdir -p ~/debs/xenial
# Building in a container using the source files
docker run --rm -v $(pwd):/source -v $HOME/debs:/root/debs -it ubuntu:xenial
apt update
apt install -y devscripts debhelper git
# Required only for cloud-info-provider package to build python package
apt install -y python-all-dev python-pbr python-setuptools
cd /source && debuild --no-tgz-check clean binary
cd /source/debs/cloud-info-provider-openstack && debuild --no-tgz-check clean binary
cd /source/debs/cloud-info-provider-opennebula && debuild --no-tgz-check clean binary
cp ../*.deb ~/debs/xenial

The deb will be available into the ~/debs/xenial directory.

Usage

Configuration

Static information

The cloud-info-provider uses a YAML file describing the static information of the cloud resources to represent. Default location of this YAML file is /etc/cloud-info-provider/static.yaml and can be overriden with the --yaml-file option. Sample configuration files are available at /etc/cloud-info-providder. The file has two main maps:

  • site: includes a single attribute name with the site name as available in GOCDB.

  • compute: configures the VOs supported at a given cloud deployment and extra information not retrievable using the middleware APIs. Every supported VO must be described by a map under shares. Name of the share should match the name of the VO. Only mandatory configuration is the authorisation options for OpenStack/ooi (OpenNebula will consider the name of the VO as the name of the OpenNebula group). See below an example for ops VO. For other attributes of the compute map, check the sample configuration files that contain documentation on the available keys and values.

compute:
  # Configure here the VOs supported at your site
  shares:
    # include one share for each supported VO
    # should match the name of the VO
    ops:
      # Authentication for the VO into OpenStack
      auth:
        # the project id in OpenStack
        project_id: xxxxx
      # Other optional information:
      # sla: https://egi.eu/sla/ops    # link to the SLA document
      # network_info: infiniband       # Type of network: infiniband, gigabiteethernet...
      # default membership is VO:<share name>, only specify if
      # using a more restrictive role/group for authorising users
      # membership:
      #    - VO:ops

Templates

By default the cloud-info-provider generates a LDIF (GLUE Schema) using the templates located inside /etc/cloud-info-provider/templates. Additionally, other supported formats include GLUE 2.1 Schema and CMDB. Use the --format option of cloud-info-provider-service command (allowed values: glue, glue21, cmdb) to use a different formatter. Likewise, the default location of the templates can be changed using the --template-dir option.

Publishers

The cloud-info-provider has a pluggable system for producing its output. Two of these publishers are provided in this repo: stdout and ams:

  • stdout: just prints output to the standard output. This is the default publisher and the one to use when the cloud-info-provider is used in a BDII set up.

  • ams: pushes a message to the Argo Messaging System with the parameters specified. It can either authenticate with a token (using --ams-token option, or with a certificate and key pair (using --ams-cert and --ams-key options). The topic to be used for publishing should be in the form: SITE_<SITE_NAME>_ENDPOINT_<ENDPOINT_ID>, where <SITE_NAME> is the site name in GOCDB and the <ENDPOINT_ID> is the id of the endpoint in GOCDB.

Providers

Dynamic information is obtained with the middleware providers (OpenStack, ooi, and OpenNebula via rOCCI supported currently). Use the --middleware option for specifying the provider to use (see the command help for exact names). cloud-info-provider will fallback to static information defined in the YAML file if a dynamic provider is not able to return any information.

Each dynamic provider has its own commandline options for specifying how to connect to the underlying service. Use the --help option for a complete listing of options.

OpenStack/ooi

The openstack and ooi providers require a working keystone endpoint and valid credentials to access that endpoint. It uses keystoneauth so any Keystone authentication method available in that library can be used. The configured user for authentication must be a member of every project configured in your shares. Authentication options largely depend on the authentication method used, default is username/password. For example, using OpenID Connect against a EGI Check-in integrated endpoint:

cloud-info-provider-service --middleware openstack \
    --os-auth-type v3oidcaccesstoken \
    --os-identity-provider egi.eu --os-protocol oidc \
    --os-access-token $ACCESS_TOKEN \
    --os-auth-url https://<keystone-endpoint>:5000/v3

The openstack provider will only generate native OpenStack information, while the ooi provider will only generate OCCI information and requires a correctly configured ooi deployment.

Other extra options for the providers (defaults should be ok):

  • --select-flavors {all,public,private} Select all (default), public or private flavors/templates. For more details see OpenStack flavors documentation.

  • --all-images If set, include information about all images (including snapshots), otherwise only publish images with cloudkeeper metadata, ignoring the others.

OpenNebula

The opennebularocci require a OpenNebula with rOCCI installation available. The following options can be used to specify authentication against the OpenNebula:

  • --on-auth <auth> Specify authorization information. For core drivers, it should be <username>:<password>. Defaults to env[ON_USERNAME] or oneadmin:opennebula.

  • --on-rpcxml-endpoint <auth-url> Specify OpenNebula XML RPC endpoint. Defaults to env[ON_RPCXML_ENDPOINT] or http://localhost:2633/RPC2.

Extra configuration can be provided with:

  • --rocci-template-dir <rocci-template-dir> Location of the rOCCI-server resource template definitions. (default: /etc/occi-server/backends/opennebula/fixtures/resource_tpl)

  • --rocci-remote-templates If set, resource template definitions will be retrieved via OCA, not from a local directory.

Upgrading to 0.11.x

Version 0.11.0 introduce a new configuration format for the cloud-info-provider, now VOs need to be explicitly declared in your configuration in order to be published, you will need a shares section on your yaml configuration like this:

compute:
  # any other existing compute sections should be kept as before
  # and add the shares with an entry per VO
  # there is no need to specify values for those entries as
  # defaults are safe for OpenNebula
  shares:
    ops:
    dteam:
    fedcloud.egi.eu:
    vo.access.egi.eu:
    # ...
Publishing to BDII and AMS

OpenNebula providers upgrading to 0.12.0 should publish information both to BDII and AMS. For that you can take advantage of your existing provider at /var/lib/bdii/gip/provider/ that is called periodically and add an invocation publishing to AMS as follows:

$ cat /var/lib/bdii/gip/provider/cloud-info-provider
#!/bin/bash

# your existing cloud-info-provider invocation
# do not change this one
cloud-info-provider-service  --yaml-file /etc/cloud-info-provider/bdii.yaml \
                             --on-auth <user>:<secret> \
                             --on-rpcxml-endpoint http://<your opennebula endpoint>:2633/RPC2 \
                             --rocci-remote-templates --middleware opennebularocci

# and add now the AMS publishing, same options but adding a few more
cloud-info-provider-service  --yaml-file /etc/cloud-info-provider/bdii.yaml \
                             --on-auth <user>:<secret> \
                             --on-rpcxml-endpoint http://<your opennebula endpoint>:2633/RPC2 \
                             --rocci-remote-templates --middleware opennebularocci \
                             --format glue21 --publisher ams \
                             --ams-topic SITE_<SITE-NAME>_ENDPOINT_<ENDPOINT ID>G0 \
                             --ams-cert /etc/grid-security/hostcert-bdii.pem \
                             --ams-key /etc/grid-security/hostkey-bdii.pem >> /var/log/cloud-info.log 2>&1

Publishing to AMS requires access to your OCCI endpoint certificate (permission should be granted to user ldap). The certificate/key pair is used to authenticate to AMS. The SITE-NAME is your site name in GOCDB, the <ENDPOINT_ID> is the id at GOCDB of your OCCI endpoint, you can obtain that id by checking the URL of your endpoint, e.g. for https://goc.egi.eu/portal/index.php?Page_Type=Service&id=9420, the ENDPOINT_ID is 9420.

Running the provider

The provider will represent the resources using the configured providers and templates and dump it to standard output. Normally this is run within a resource-level BDII so the information is published into the site BDII.

CAs

The provider will use your python default CAs for checking and connecting to your endpoints and GOCDB, so please make sure those CAs include the IGTF CAs. The location of the CAs depending on how you installed the different python packages (using deb/rpm packages or pip).

For debian-based systems (e.g. ubuntu), use the following:

cd /usr/local/share/ca-certificates
for f in /etc/grid-security/certificates/*.pem ; do ln -s $f $(basename $f .pem).crt; done
update-ca-certificates

For RH-based systems (e.g. CentOS), you can include the IGTF CAs with:

cd /etc/pki/ca-trust/source/anchors
ln -s /etc/grid-security/certificates/*.pem .
update-ca-trust extract

Otherwise, you need to add the IGTF CAs to the internal requests bundle:

cat /etc/grid-security/certificates/*.pem >> $(python -m requests.certs)

Running the provider in a resource-BDII

This is the normal deployment mode for the cloud provider. It should be installed in a node with access to your cloud infrastructure: for OpenStack/ooi, access to nova/glance APIs is needed; for OpenNebula-rOCCI provider, access to the files describing the rOCCI templates is needed (i.e. installing the provider in the same host as rOCCI-server).

Create the provider script

In /var/lib/bdii/gip/provider/ create a cloud-info-provider file that calls the provider with the correct options for your site:

#!/bin/sh

cloud-info-provider-service --yaml /etc/cloud-info-provider/openstack.yaml \
                            --middleware openstack \
                            --os-username <username> --os-password <password> \
                            --os-user-domain-name default \
                            --os-project-name <tenant> \
                            --os-project-domain-name default \
                            --os-auth-url <auth-url>

Give it execution permission:

chmod +x /var/lib/bdii/gip/provider/cloud-info-provider

and test it:

/var/lib/bdii/gip/provider/cloud-info-provider

It should output the full ldif describing your site.

Test the generation of the LDIF before running the provider into your BDII!

Publishing both native OpenStack and ooi information

In your /var/lib/bdii/gip/provider/cloud-info-provider include calls to both OpenStack and ooi providers:

#!/bin/sh

cloud-info-provider-service --yaml /etc/cloud-info-provider/openstack.yaml \
                            --middleware openstack \
                            --os-username <username> --os-password <password> \
                            --os-user-domain-name default \
                            --os-project-name <tenant> \
                            --os-project-domain-name default --os-auth-url <auth-url>
cloud-info-provider-service --yaml /etc/cloud-info-provider/openstack.yaml \
                            --middleware ooi \
                            --os-username <username> --os-password <password> \
                            --os-user-domain-name default \
                            --os-project-name <tenant> \
                            --os-project-domain-name default --os-auth-url <auth-url>
Start the bdii service

Once the provider script is working, start the bdii service:

service bdii start

The ldap server should contain all your cloud resource information:

ldapsearch -x -h localhost -p 2170 -b o=glue
Adding the resource provider to the site-BDII

Sites should have a dedicated host for the site-BDII. Information on how to set up this machine is avaiable in the EGI.eu wiki at How to publish site information.

Add your cloud-info-provider to your site-BDII by adding a new URL that looks like this: ldap://<cloud-info-provider-hostname>:2170/GLUE2GroupID=cloud,o=glue

GLUE 2.1 Schema

GLUE 2.1 Schema output can be generated by using --format glue21, e.g. using OpenStack provider:

cloud-info-provider-service --format glue21 \
    --middleware openstack \
    --os-username <username> --os-password <password> \
    --os-user-domain-name default \
    --os-project-name <tenant> \
    --os-project-domain-name default --os-auth-url <auth-url>

This cannot be used with current BDII implementations as the schema is still not supported by the infrastructure.

CMDB Schema

CMDB (CouchDB) Schema is generated by using --format cmdb, e.g. using OpenStack provider:

cloud-info-provider-service --format cmdb \
    --middleware openstack \
    --os-username <username> --os-password <password> \
    --os-user-domain-name default \
    --os-project-name <tenant> \
    --os-project-domain-name default --os-auth-url <auth-url>

Release management

Release management is documented in RELEASING.md