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gets memory from /proc/meminfo #51

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gets memory from /proc/meminfo #51

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bdf5175
gets memory from /proc/meminfo
odra Apr 21, 2017
ca40bd3
added data from jvm heap command
odra Apr 25, 2017
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33 changes: 32 additions & 1 deletion plugins/default/lib/memory_usage.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import sys
import traceback
from collections import Counter
import re

import openshift
import nagios
Expand All @@ -28,10 +29,37 @@ def generate_parser():
return parser


check_memory_usage_cmd = ("cat", "/sys/fs/cgroup/memory/memory.usage_in_bytes")
check_memory_usage_cmd = ("cat", "/proc/meminfo")
check_jvm_max_heap_cmd = ("java", "-XX:+PrintFlagsFinal", "-version")
check_memory_limit_cmd = ("cat", "/sys/fs/cgroup/memory/memory.limit_in_bytes")


def jvm_data(data, key):
return re.findall(r'\s+[a-zA-Z]+\s%s\s+\:?\=\s([0-9]+)\s+\{[a-zA-Z\s?]+\}\n' % key, data)[0]


def get_meminfo_data(field, output):
data = None
try:
data = int(re.findall(r"%s\:\s+([0-9]+)\skB\n" % data, output)[0])
except IndexError:
data = None
finally:
return data


def heap_thread_size(pid=1, thread_size=1024):
folder = '/proc/%s/task' % pid
total_tasks = len([task for task in os.listdir(folder) if task.isdigit()])
return total_tasks * thread_size


def get_memused(data, jvm_data):
initial = int(jvm_data(jvm_data, 'InitialHeapSize'))
single_thread_size = int(jvm_data(info, 'ThreadStackSize'))
return initial + heap_thread_size(2727, thread_size=single_thread_size)


def analize(pod, container, memory_limit, memory_used, warning_threshold, critical_threshold):
results = []
usage = (float(memory_used) / float(memory_limit)) * 100
Expand Down Expand Up @@ -103,6 +131,9 @@ def check(warn, crit, project):
try:
memory_usage = openshift.exec_in_pod_container(
project, pod_name, container_name, check_memory_usage_cmd)
jvm_heap = openshift.exec_in_pod_container(
project, pod_name, container_name, check_jvm_max_heap_cmd)
memory_usage = get_memused(memory_usage, jvm_heap)
if memory_limit:
memory_limit = openshift.exec_in_pod_container(
project, pod_name, container_name, check_memory_limit_cmd)
Expand Down