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hostinfo.py
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74 lines (56 loc) · 1.87 KB
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# Copyright (c) 2013 dotCloud, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import multiprocessing
import os
from oslo_config import cfg
import psutil
CONF = cfg.CONF
def statvfs():
docker_path = CONF.docker.root_directory
if not os.path.exists(docker_path):
docker_path = '/'
return psutil.disk_usage(docker_path)
def get_disk_usage():
# This is the location where Docker stores its containers. It's currently
# hardcoded in Docker so it's not configurable yet.
st = statvfs()
return {
'total': st.total,
'available': st.free,
'used': st.used
}
def get_total_vcpus():
return multiprocessing.cpu_count()
def get_vcpus_used(containers):
total_vcpus_used = 0
for container in containers:
if isinstance(container, dict):
total_vcpus_used += container.get('Config', {}).get(
'CpuShares', 0) / 1024
return total_vcpus_used
def get_memory_usage():
vmem = psutil.virtual_memory()
return {
'total': vmem.total,
'used': vmem.used
}
def get_mounts():
with open('/proc/mounts') as f:
return f.readlines()
def get_cgroup_devices_path():
for ln in get_mounts():
fields = ln.split(' ')
if fields[2] == 'cgroup' and 'devices' in fields[3].split(','):
return fields[1]