Teardown Node(s)

Teardown Node

Teardown allows user to remove components and cleanup what had been setup as part of provisioning. This could be achieved either for entire system or for each component individually.

Since there are various inter dependencies of Cortx cluster services the same script to teardown cluster does not always work and the Cortx cluster needs different ways of teardown in different situation/scenarios.

Teardown Provisioner Deployed Environment

Stop Cluster Services

cortx cluster stop --all

This might take some time.

Teardown All

provisioner destroy

Targeted Teardown

HA States

provisioner destroy --states ha

Control-path States

provisioner destroy --states controlpath

IO-path States

provisioner destroy --states iopath

Foundation States

provisioner destroy --states utils

3rd Party Components

provisioner destroy --states prereq

Platform States

provisioner destroy --states system

Teardown Provisioner Bootstrapped Environment

1. Using provisioner CLI

   provisioner destroy --states bootstrap
   

2. Cleanup SSH (execute on each node)

   rm -rf /root/.ssh
   

Manual steps to teardown the Bootstrapped Environment (execute on each node):

1. Unmount gluster volumes

   MOUNT_ENDPOINT=$(mount -l | grep gluster | cut -d ' ' -f3)
   [[ -n ${MOUNT_ENDPOINT} ]] && umount ${MOUNT_ENDPOINT}
   

2. Reclaim metadata and data storage

   # Wipe the MBR of metadata volume
   for vggroup in $(vgdisplay | egrep "vg_srvnode-"|tr -s ' '|cut -d' ' -f 4); do
       echo "Removing volume group ${vggroup}"
       vgremove --force ${vggroup}
   done
   partprobe
   
   device_list=$(lsblk -nd -o NAME -e 11|grep -v sda|sed 's|sd|/dev/sd|g'|paste -s -d, -)
   for device in ${device_list}
   do
       wipefs --all ${device}
   done
   

3. Stop services

   systemctl status glustersharedstorage >/dev/null 2>&1 && systemctl stop glustersharedstorage
   systemctl status glusterfsd>/dev/null 2>&1 && systemctl stop glusterfsd
   systemctl status glusterd>/dev/null 2>&1 && systemctl stop glusterd
   systemctl status salt-minion >/dev/null 2>&1 && systemctl stop salt-minion
   systemctl status salt-master >/dev/null 2>&1 && systemctl stop salt-master
   

4. Uninstall the rpms

   yum erase -y cortx-prvsnr cortx-prvsnr-cli      # Cortx Provisioner packages
   yum erase -y glusterfs-fuse glusterfs-server glusterfs       # Gluster FS packages
   yum erase -y salt-minion salt-master salt-api   # Salt packages
   yum erase -y python36-m2crypto                  # Salt dependency
   yum erase -y python36-cortx-prvsnr              # Cortx Provisioner API packages
   yum erase -y *cortx*                            # Brute force cleanup for any remnants
   yum autoremove -y
   yum clean all
   # Remove cortx-py-utils
   pip3 uninstall -y cortx-py-utils
   # Cleanup pip packages
   pip3 freeze|xargs pip3 uninstall -y
   

5. Cleanup bricks and other directories

   unalias rm
   
   # Cleanup yum
   test -e /var/cache/yum && rm -rf /var/cache/yum
   
   # Cleanup pip config
   test -e /etc/pip.conf && rm -f /etc/pip.conf
   test -e ~/.cache/pip && rm -rf ~/.cache/pip
   
   # Cortx software dirs
   test -e /opt/seagate/cortx_configs && rm -rf /opt/seagate/cortx_configs
   test -e /opt/seagate/cortx && rm -rf /opt/seagate/cortx
   test -e /opt/seagate && rm -rf /opt/seagate
   test -e /etc/csm && rm -rf /etc/csm
   test -e /etc/cortx/ha && rm -rf /etc/cortx
   
   # Bricks cleanup
   test -e /var/lib/seagate && rm -rf /var/lib/seagate
   test -e /srv/glusterfs && rm -rf /srv/glusterfs
   test -e /var/lib/glusterd && rm -rf /var/lib/glusterd || true
   
   # Cleanup Salt
   test -e /var/cache/salt && rm -rf /var/cache/salt
   test -e /etc/salt && rm -rf /etc/salt
   test -e /etc/yum.repos.d/RELEASE_FACTORY.INFO && rm -f /etc/yum.repos.d/RELEASE_FACTORY.INFO
   
   # Cleanup Provisioner profile directory
   test -e /opt/isos && rm -rf /opt/isos || true
   test -e /root/.provisioner && rm -rf /root/.provisioner || true
   test -e /etc/yum.repos.d/RELEASE_FACTORY.INFO && rm -f /etc/yum.repos.d/RELEASE_FACTORY.INFO || true
   

6. Cleanup SSH

   rm -rf /root/.ssh