def real_ipv4_container(name):
if name in stopped():
return ''
cmd = ["lxc-attach --name %s -- ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'" % name]
try:
out = subprocess.check_output(cmd, shell=True)
except:
return ''
return out
def get_filesystem_usage(container, check_running=False):
'''
Returns container root filesystem current usage
Only for running containers
'''
result = {
'total': 0,
'used': 0,
'free': 0,
'percent': '0'
}
if check_running and container in stopped():
return result
cmd = ["lxc-attach --name %s -- df -h /" % container]
done = False
try:
usage = subprocess.check_output(cmd, shell=True).split('\n')[1].split()
result = {'total': usage[1],
'used': usage[2],
'free': usage[3],
'percent': usage[4].strip('%')}
done = True
except Exception as e:
pass
if not done:
try:
import lvm
import fs
filename = '/var/lib/lxc/%s/config' % container
config = ConfigParser.RawConfigParser()
config.readfp(FakeSection(open(filename)))
try:
rootfs = config.get('DEFAULT', cgroup['rootfs'])
except ConfigParser.NoOptionError:
rootfs = ''
if rootfs:
if lvm.is_lvm(rootfs):
result.update( fs.get_usage(rootfs) )
else:
# Simulate lxc-attach is rootfs is directory
cmd = ["df -h %s" % rootfs]
usage = subprocess.check_output(cmd, shell=True).split('\n')[1].split()
result = {'total': usage[1],
'used': usage[2],
'free': usage[3],
'percent': usage[4].strip('%')}
except Exception as e:
pass
return result
def container_cpu_percent(name):
'''
returns CPU usage in percent
'''
if name in stopped():
return '0'
cmd = ["lxc-ps --name %s -- u | awk 'BEGIN{s=0.0}{s+=$4}END{print s}'" % name]
try:
out = subprocess.check_output(cmd, shell=True).strip()
except:
return '0'
return out
def memory_usage(name):
'''
returns memory usage in MB
'''
if not exists(name):
raise ContainerDoesntExists("The container (%s) does not exist!" % name)
if name in stopped():
return 0
cmd = ['lxc-cgroup -n %s memory.usage_in_bytes' % name]
try:
out = subprocess.check_output(cmd, shell=True).splitlines()
except:
return 0
return int(out[0])/1024/1024
def max_memory_usage(name):
if not exists(name):
raise ContainerDoesntExists("The container (%s) does not exist!" % name)
if name in stopped():
return 0
cmd = ['lxc-cgroup -n %s memory.limit_in_bytes' % name]
try:
out = subprocess.check_output(cmd, shell=True).splitlines()
except:
return 0
host = host_memory_usage()
limit = int(out[0])/1024/1024
if limit > host["total"]:
limit = host["total"]
return limit