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Introduction
CloudHub provides access to log data that
includes deployment messages and events for each worker. Logs and diagnostics
are currently available only for applications deployed to CloudHub workers. In
cases where applications are deployed using the Runtime Manager local server,
you can send data to External Analytics Software. Applications deployed to
Pivotal Cloud Foundry (PCF) don’t expose any log data through Runtime Manager,
but you can see event logs on Pivotal’s UI.
Overview
View Logs
In Runtime Manager, click Applications
in the left menu, then click the application that is deployed to CloudHub to
open its management options.
In the left menu, click Logs. The
application logs are displayed.
The Deployments section on the right
of the logging screen lets you selectively view the output by day, deployment,
system log, and workers. You can unapply a filter by unticking the checkbox
next to a date.
You can search for log content, or click Advanced
to search for a specified time, day, date range, or by message priority. After
you specify the search criteria, click Apply.
Download Logs
Each worker in each deployment has separate
logs you can download.
In the Deployment filters section on
the right, find the date and worker you want to view, click the download icon
next to it, and select Logs.
The log file is a text file with .log file
extension and named in the format of
<deployment-ID>-<instance-ID>.log. You can view this file with a
text editor.
Download Diagnostics
Diagnostics display the Java thread dump of
each CloudHub worker in each deployment. These indicate the current state of
the server, which is useful for debugging and support.
In the Deployment filters section on
the right, find the date and worker you want to view, click the download icon
next to it, and select Diagnostics.
The downloaded log file is a text file with
the .txt file extension and named in the format of
<app-name>-instance-<instance-ID>-<worker-number>-diag.txt.
You can view this file with a text editor.
About Log Persistence
CloudHub stores logs of up to 100 MB per
application per worker, or for up to 30 days, whichever limit is reached first.
About Log Timezones
CloudHub stores log data in Universal Time
(UTC); however, the console displays the log using your computer’s local time
zone.
Search Logs
Advanced search lets you search logs by date
and priority.
To access advanced search, click Advanced in
the search field.
Search by Date and Time
The Date & Time filter lets you search
the log by specifying a date range. Possible values are:
Ø Last hour
Ø
Last 24 hours
Ø
Last week
Ø Last month
Search by Message Priority
The Priority filter lets you view specific
events in the log. You can also specify different priorities by typing
priority<type> in the search box, as shown in the Command column in the
table.
Possible values are:
|
Value
|
Description
|
Command
|
|
All Priorities
|
List all messages
|
N/A
|
|
ERROR
|
List only error messages,
such when an exception occurs.
|
priority:ERROR
|
|
FATAL
|
List only fatal messages
for when an application fails
|
priority:FATAL
|
|
INFO
|
List informative messages
|
priority:INFO
|
|
SYSTEM
|
List messages about
application and worker startup
|
priority:SYSTEM
|
|
CONSOLE
|
List message about
console events such as setting the object store
|
priority:CONSOLE
|
|
WARN
|
List warning messages
|
priority:WARN
|
|
DEBUG
|
List debugging messages
|
priority:DEBUG
|
Wildcard Searching
You can filter log data by entering search
terms into the search box at the top of the log page that match results in the
log message. You can also search for an exact term in the log message with a
few common quantifiers for wildcard searching:
Ø ? - The question mark matches zero or one of the preceding elements.
Ø * - The asterisk matches zero or more of the preceding element.
Conclusion
This article we discussed related to
CloudHub Logging. We will learn more about custom logging and persisting
CloudHub log information in upcoming articles.
Download
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S. No
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File Name
|
Size
|
Download
|
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1
|
Mulesoft
CloudHub Logging.pdf
|
1.0 MB
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