Testing composable upgrades

This is a brief recipe about how I’m testing composable upgrades O->P.

Based on the original shardy’s notes from this link.

The following steps are followed to upgrade your Overcloud from Ocata to latest master (Pike).

• Deploy latest master TripleO following this post.

• Remove the current Overcloud deployment.

  source stackrc
  heat stack-delete overcloud

• Remove the Overcloud images and create new ones (for the Overcloud).

  cd
  openstack image list
  openstack image delete <image_ID> #Delete all the Overcloud images overcloud-full*
  rm -rf /home/stack/overcloud-full.*

  export STABLE_RELEASE=ocata
  export USE_DELOREAN_TRUNK=1
  export DELOREAN_TRUNK_REPO="https://trunk.rdoproject.org/centos7-ocata/current/"
  export DELOREAN_REPO_FILE="delorean.repo"
  /home/stack/tripleo-ci/scripts/tripleo.sh --overcloud-images

  # Or reuse images
  # wget https://images.rdoproject.org/ocata/delorean/current-tripleo/stable/overcloud-full.tar
  # tar -xvf overcloud-full.tar
  # openstack overcloud image upload --update-existing

• Download Ocata tripleo-heat-templates.

  cd
  git clone -b stable/ocata https://github.com/openstack/tripleo-heat-templates tht-ocata

• Configure the DNS (needed when upgrading the Overcloud).

  neutron subnet-update `neutron subnet-list | grep ctlplane-subnet | awk '{print $2}'` --dns-nameserver 192.168.122.1

• Deploy an Ocata Overcloud.

  openstack overcloud deploy \
  --libvirt-type qemu \
  --ntp-server pool.ntp.org \
  --templates /home/stack/tht-ocata/ \
  -e /home/stack/tht-ocata/overcloud-resource-registry-puppet.yaml \
  -e /home/stack/tht-ocata/environments/puppet-pacemaker.yaml

• Install prerequisites in nodes (if no DNS configured this will fail, so make sure they have Intenet access), check that your nodes can connect to Internet.

cat > upgrade_repos.yaml << EOF
parameter_defaults:
  UpgradeInitCommand: |
    set -e

    #Master repositories
    sudo curl -o /etc/yum.repos.d/delorean.repo https://trunk.rdoproject.org/centos7-master/current-passed-ci/delorean.repo
    sudo curl -o /etc/yum.repos.d/delorean-deps.repo https://trunk.rdoproject.org/centos7/delorean-deps.repo


    export HOME=/root
    cd /root/
    if [ ! -d tripleo-ci ]; then
      git clone https://github.com/openstack-infra/tripleo-ci.git
    else
      pushd tripleo-ci
      git checkout master
      git pull
      popd
    fi

    if [ ! -d tripleo-heat-templates ]; then
      git clone https://github.com/openstack/tripleo-heat-templates.git
    else
      pushd tripleo-heat-templates
      git checkout master
      git pull
      popd
    fi

    ./tripleo-ci/scripts/tripleo.sh --repo-setup
    sed -i "s/includepkgs=/includepkgs=python-heat-agent*,/" /etc/yum.repos.d/delorean-current.repo
    #yum -y install python-heat-agent-ansible
    yum install -y python-heat-agent-*

    rm -f /usr/libexec/os-apply-config/templates/etc/puppet/hiera.yaml
    rm -f /usr/libexec/os-refresh-config/configure.d/40-hiera-datafiles
    rm -f /etc/puppet/hieradata/*.yaml
    yum remove -y python-UcsSdk openstack-neutron-bigswitch-agent python-networking-bigswitch openstack-neutron-bigswitch-lldp python-networking-odl
    crudini --set /etc/ansible/ansible.cfg DEFAULT library /usr/share/ansible-modules/
EOF

• Download master tripleo-heat-templates.

  cd
  git clone https://github.com/openstack/tripleo-heat-templates tht-master

• Upgrade Overcloud to master

  cd
  openstack overcloud deploy \
  --libvirt-type qemu \
  --ntp-server pool.ntp.org \
  --templates /home/stack/tht-master/ \
  -e /home/stack/tht-master/overcloud-resource-registry-puppet.yaml \
  -e /home/stack/tht-master/environments/puppet-pacemaker.yaml \
  -e /home/stack/tht-master/environments/major-upgrade-composable-steps.yaml \
  -e upgrade_repos.yaml

Note: if upgrading to a containerized Overcloud (Pike and beyond) do:

cat > docker_registry.yaml << EOF
parameter_defaults:
  DockerNamespace: 192.168.24.1:8787/tripleoupstream
  DockerNamespaceIsRegistry: true
EOF

# This will take some time...
openstack overcloud container image upload --config-file /usr/share/openstack-tripleo-common/container-images/overcloud_containers.yaml

openstack overcloud container image prepare \
--namespace tripleoupstream \
--tag latest \
--env-file docker-centos-tripleoupstream.yaml

cd
source ~/stackrc
export THT=/home/stack/tht-master

openstack overcloud deploy --templates $THT \
--libvirt-type qemu \
--ntp-server pool.ntp.org \
-e $THT/overcloud-resource-registry-puppet.yaml \
-e $THT/environments/puppet-pacemaker.yaml \
-e $THT/environments/major-upgrade-composable-steps.yaml \
-e upgrade_repos.yaml \
-e $THT/environments/docker.yaml \
-e $THT/environments/docker-ha.yaml \
-e $THT/environments/major-upgrade-composable-steps-docker.yaml \
-e docker-centos-tripleoupstream.yaml \
-e docker_registry.yaml

• Run the converge step ** Not tested on the containerized upgrade **

  cd
  openstack overcloud deploy \
  --libvirt-type qemu \
  --ntp-server pool.ntp.org \
  --templates /home/stack/tht-master/ \
  -e /home/stack/tht-master/overcloud-resource-registry-puppet.yaml \
  -e /home/stack/tht-master/environments/puppet-pacemaker.yaml \
  -e /home/stack/tht-master/environments/major-upgrade-converge.yaml

If the last steps manage to finish successfully, you just have upgraded your Overcloud from Ocata to Pike (latest master).

For more resources related to TripleO deployments, check out the TripleO YouTube channel.