system event log - school of computingmind/papers/deeplog_short.pdf · 2017-12-04 · 29 deeplog a...
Post on 10-Mar-2020
0 Views
Preview:
TRANSCRIPT
2
3
System Event LogExist practically on
every computer system!
Automatic Analysis?
4
SystemEventLog
Started service A on port 80Executor updated: app-1 is now LOADING……
5
SystemEventLog
Structured Data
Log key
printf(“Started service %s on port %d”, x, y);
LOG PARSING
Started service A on port 80Executor updated: app-1 is now LOADING……
Started service * on port *Executor updated: * is now LOADING……
6
SystemEventLog
Structured Data Anomaly Detection
LOG ANALYSIS
LOG PARSING
Started service A on port 80Executor updated: app-1 is now LOADING……
Started service * on port *Executor updated: * is now LOADING……
Log key
printf(“Started service %s on port %d”, x, y);
7
8
SPELLA streaming log
parser published in ICDM’16
Deletion of file1 complete. Deletion of file1 complete.
log keylog message
Deletion of file2 complete. Deletion of * complete.
parameters
[ ]
[file2]
9
DeepLog
Anomaly Detection Diagnosis
10
TrainingStage
DetectionStage
MODELS
11
DetectionStage
MODELS
12
DetectionStage
MODELS
13
DetectionStage
MODELS
14
DetectionStage
MODELS
15
TrainingStage
MODELS
16
TrainingStage
MODELS
17
TrainingStage
MODELS
18
TrainingStage
MODELS
19
TrainingStage
MODELS
20
TrainingStage
MODELS
21
Use long short-term memory (LSTM) architecture
In detection stage, DeepLog checks if the actual next log key is among its top g probable predictions.
22
Method 1: Using LSTM prediction probabilities
Method 2: Using co-occurrence matrix
23
24
Multi-variate time series data anomaly detection problem!--- Leverage LSTM to check reconstruction error.
25
Evaluation results on HDFS log data. (over a million log entries with labeled anomalies)
PCA (SOSP’09), IM (UsenixATC’10), N-gram (baseline language model)
26
Evaluation results on Blue Gene/L log, with and without online model update.
27
Evaluation results on OpenStack cloud log with different confidence intervals (CIs)
28
Diagnosis using constructed workflow.
Injected anomaly: during VM creation, network speed from controller to compute node is throttled.
29
DeepLog
➢ A realtime system log anomaly detection framework.
➢ LSTM is used to model system execution paths and log parameter values.
➢ Workflow models are built to help anomaly diagnosis.
➢ It supports online model update.
Min Dumind@cs.utah.edu
top related