Removing unassigned nodes

To be completely removed from the infrastructure, the node must not be a part of the storage cluster.

Prerequisites

The node is removed from the storage cluster, as described in Releasing nodes from the storage cluster.

To remove a node from the infrastructure

Admin panel

Select the unassigned node on the Infrastructure > Nodes screen, and then click Remove.

For security purposes, clean up the node certificates and identity:

For an online node, run the following commands:

# /usr/libexec/vstorage-ui-agent/bin/generate_id.sh --rewrite-ids
# rm -rf /var/lib/pgsql/*
# rm -rf /usr/libexec/vstorage-ui-backend/backups/*
# rm -rf /usr/libexec/vstorage-ui-backend/etc/backend.cfg

For an offline node, run the following commands once it becomes available again:

# rm -rf /usr/libexec/vstorage-ui-backend/ca
# rm -rf /etc/nginx/ssl
# /usr/libexec/vstorage-ui-agent/bin/generate_id.sh --rewrite-ids
# rm -rf /var/lib/pgsql/*
# rm -rf /usr/libexec/vstorage-ui-backend/backups/*
# rm -rf /usr/libexec/vstorage-ui-backend/etc/backend.cfg

After such a cleanup, the only way to add the node back to the cluster is by re-installing Virtuozzo Hybrid Infrastructure on it from scratch.

Command-line interface

Unregister the node from Virtuozzo Hybrid Infrastructure by using the vinfra node forget command. For example, to unregister the node node005, run:
```
# vinfra node forget node005
```

For security purposes, clean up the node certificates and identity:

For an online node, run the following commands:

# /usr/libexec/vstorage-ui-agent/bin/generate_id.sh --rewrite-ids
# rm -rf /var/lib/pgsql/*
# rm -rf /usr/libexec/vstorage-ui-backend/backups/*
# rm -rf /usr/libexec/vstorage-ui-backend/etc/backend.cfg

For an offline node, run the following commands when it becomes online:

# rm -rf /usr/libexec/vstorage-ui-backend/ca
# rm -rf /etc/nginx/ssl
# /usr/libexec/vstorage-ui-agent/bin/generate_id.sh --rewrite-ids
# rm -rf /var/lib/pgsql/*
# rm -rf /usr/libexec/vstorage-ui-backend/backups/*
# rm -rf /usr/libexec/vstorage-ui-backend/etc/backend.cfg

After such a cleanup, the only way to add the node back to the cluster is by re-installing Virtuozzo Hybrid Infrastructure on it from scratch.