How to remove hosts from performance screen

Following is a simple procedure to remove hosts from the performance screen.

From the command line set the environment to include the path to the tools:
```
source /usr/local/groundwork/scripts/setenv.sh
```
Log in to the postgres database:
```
psql -U postgres
```
You should see a prompt similar to postgres=#, select the configuration database:
```
\c monarch
```
Remove the entries you don't want from the host_service table.
For example, to delete all entries for host foo:
```
delete from host_service where host like 'foo'
```
To delete all entries for service foo_service:
```
delete from host_service where service like 'foo_service'
```
To delete a specific service from a host and leave the others:
```
delete from host_service where host like 'foo' and service like 'foo_service'
```

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