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#!{{ python_bin }}
import os
import sys
def free_space(path, fn):
while True:
try:
disk = os.statvfs(path)
return fn(disk)
except OSError:
pass
if os.sep not in path:
break
path = os.path.split(path)[0]
def user_free_space(path):
return free_space(path, lambda d: d.f_bsize * d.f_bavail)
def check_inode_usage(path):
max_inode_usage = 97.99 # < 98% usage
st = os.statvfs(path)
usage_output = ""
total_inode = st.f_files
free_inode = st.f_ffree
usage = round((float(total_inode - free_inode) / total_inode), 4) * 100
if usage > max_inode_usage:
return "Disk Inodes are widely used: %s%%" % usage
elif os.path.exists('/tmp'):
# check if /tmp is mounted on another disk than path
tmp_st = os.statvfs('/tmp')
if tmp_st.f_blocks != st.f_blocks:
tmp_usage = round((float(tmp_st.f_files - tmp_st.f_ffree) / tmp_st.f_files), 4) * 100
if tmp_usage > max_inode_usage:
return "Disk Inodes are widely used: %s%%" % tmp_usage
return ""
if __name__ == '__main__':
home_path = '{{ home_path }}'
config_file = '{{ config_file }}'
min_free_size = 1024*1024*1024*2 # 2G by default
if os.path.exists(config_file):
with open(config_file) as f:
min_size_str = f.read().strip()
if min_size_str == '0':
# disable check
print "Free disk space check is disabled\n set a number up to 0 to enable!"
exit(0)
if min_size_str.isdigit():
value = int(min_size_str)
if value >= 200:
# Minimum value is 200Mb, it's already low
min_free_size = int(min_size_str)*1024*1024
else:
with open(config_file, 'w') as f:
f.write(str(min_free_size/(1024*1024)))
real_free_space = user_free_space(home_path)
if real_free_space > min_free_size:
inode_usage = check_inode_usage(home_path)
if inode_usage:
print inode_usage
exit(2)
print "Disk usage: OK"
exit(0)
real_space_g = round(real_free_space/(1024.0*1024*1024), 2)
min_space_g = round(min_free_size/(1024.0*1024*1024), 2)
print 'Free disk space low: remaning %s G (threshold: %s G)' % (
real_space_g, min_space_g)
print 'You can modify minimum value on your monitor interface.'
exit(1)