{% set server = salt['grains.filter_by']({
    'default': {
        'dir': {
            'config': '/srv/volumes/prometheus-config',
            'config_in_container': '/opt/prometheus/config'
        },
    },
}, merge=salt['pillar.get']('prometheus:server')) %}

{% set alertmanager = salt['grains.filter_by']({
    'default': {
        'dir': {
            'config': '/srv/volumes/prometheus-config',
        },
    },
}, merge=salt['pillar.get']('prometheus:alertmanager')) %}