[jbosstools-issues] [JBoss JIRA] (JBIDE-15484) Provide support for scaled app when tailing log files

[Andre Dietisheim (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-15484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12807354#comment-12807354 ] 

Andre Dietisheim commented on JBIDE-15484:
------------------------------------------

For our own documentation purpose:
It's crucial to make sure the application is running on several gears.

1.) You need an application that creates some logs:
{code}
git clone https://github.com/jboss-jdf/ticket-monster.git
{code}

Then modify persistence.xml so that hibernate logs its queries to the log:
{code:title=src/main/resources/META-INF/persistence.xml}
<property name="hibernate.show_sql" value="true" />
{code}

Then build, copy the resulting war to the application git-repository and push it to OpenShift:
{code}
mvn clean package
cp target/ticket-monster.war ../../scaled/deployments/
git add ../../scaled/deployments/ticket-monster.war
git commit
git push origin
{code}

2.) to check whether the application is running on several gears, curl the application:
{code}
curl -H "Accept: application/xml; version=1.2" --user USER:PASSWORD https://openshift.redhat.com/broker/rest/domains/foogoo/applications/scaled -X GET | grep gear-count
{code}

In the response you'll spot the gears it's running on via the *gear-count* property:
{code}
<gear-count>2</gear-count>
{code}

3.) Then produce some load via a bash-script that curls to the database-backend within ticketmonster:
{code}
#!/bin/sh
for i in {1..10000}
do
curl "http://scaled-foogoo.rhcloud.com/ticket-monster/rest/shows?event=1&_=1380112212405" -H "Host: scaled-foogoo.rhcloud.com" -H "Accept: application/json, text/javascript" -H "Referer: http://scaled-foogoo.rhcloud.com/ticket-monster/" -H "X-Requested-With: XMLHttpRequest"
done
{code}

4.) watch the application logs
                
> Provide support for scaled app when tailing log files
> -----------------------------------------------------
>
>                 Key: JBIDE-15484
>                 URL: https://issues.jboss.org/browse/JBIDE-15484
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: openshift
>    Affects Versions: 4.1.0.Final
>            Reporter: Xavier Coulon
>            Assignee: Xavier Coulon
>             Fix For: 4.1.1.Alpha2, 4.2.0.Alpha1
>
>
> Seems like it's simply a matter of adding a '--gears' parameter in the ssh command when the application is scalable.
> The dialog could provide a checkbox (enabled by default) to let the user choose whether she wants to grab all logs or just those on the HA-Proxy
> See [~lincolnthree]'s blog post on the subject: http://ocpsoft.org/jboss/openshift-pro-tip-scaling-tail-server-logs-on-all-gears-of-your-app-at-once/ 

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