How do you face Tomcat management issues in the deployment scenarios? Tomcat Control Center combined with Chef automation can help.

1. (AUTOMATED) TOMCAT
MANAGEMENT
@ladislavGazo
gazo@seges.sk

2. TOMCAT

3. STRUCTURE
bincontrolscripts
lib common libraries
webappinstance context
logs ...

4. PROBLEM?
NO
for development
(or simple cases)

5. ADMIN'S PERSPECTIVE
multiple servers
multiple instances on aserver
clustered environment
Tomcat's lack of admin tools
notwillingto payfor tcServer

6. TEMPLATE:
common logging
common libraries
common resource naming(JNDI)
VS.
INSTANCE:
custom WAR
because of differentversions
custom logs
specific resources (e.g. in JNDI)
various apps deployed on one server

7. getthe PID
ENDLESS KILLING
/opt/tomcat/bin/shutdown.sh
thoughtitis killed :(
psaux|grepcatal
once itis fine but... even in DEVitis boring
kill-9<da_PID>
cd../logs
mv*/mnt/backup/logs
cd../bin
./startup.sh

8. ... AND WE FACED SUCH ISSUES

9. TOMCAT CONTROL CENTER

10. HTTPS://GITHUB.COM/SEGES/TOMCAT-
CONTROL-CENTER

11. WHAT IS IT?

12. CONCEPT
TEMPLATE
and
(MULTIPLE) INSTANCE(S)
controlled from
SINGLE POINT

13. [SMALL] SET OF SCRIPTS
start
(start_secured)
stop_force
restart_force
backup_logs_restart_force
status
export_instance_info
control-instances

14. CENTRAL RESOURCE CONTROL
TomcatResources.py
automaticallyupdates server.conf JNDI for each instance
usingcentralCSVfiles
setenv
resource-db
resource-mail
resource-env
resource-rmi
...

15. OH GOSH, CSV FILES?
Yeah!
... and yeah!again, I can manage itin Excel:p

16. PROS
lightweightand simple
separate template and instances
centralmanagement
CONS
so far onlyon BASH-enabled systems
no Docker supportyet:)
(notactuallyaminus) no GUI

19. HTTPS://GITHUB.COM/SEGES/CHEF-
COOKBOOK-TCC

20. INSTALLS TCC
PREPARES TEMPLATE(S)
PREPARES INSTANCE(S) ENV
(CAN) MONITOR WITH NEWRELIC

21. ... WISDOM ...

23. AUTOMATED TCC
cd~/chef
gitsubmoduleaddhttps://github.com/seges/chef-cookbook-tcc.gitsite-cookbooks/tcc
gitsubmoduleaddhttps://github.com/escapestudios-cookbooks/newrelic.gitsite-cookbooks/

24. CREATE COOKBOOK OR RECIPE
knifecookbookcreatemycookie

25. DEFINE DEFAULT ATTRIBUTES
default.tcc.user="lgazo"
default.tcc.home="/home/lgazo"
default.tcc.location="/home/lgazo/opt/tcc"

26. DEFINE TCC TOMCAT TEMPLATE WITH
DEPENDENCIES
default['tcc']['templates']={
"synapso"=>{
"type"=>"tomcat7",
"libs"=>[
{
"repo"=>"maven",
"artifact_id"=>"org.apache.geronimo.specs:geronimo-jms_1.1_spec:1.1.1"
},
{
"repo"=>"maven",
"artifact_id"=>"com.sun.messaging.mq:imq:4.4"
},
{
"repo"=>"maven",
"artifact_id"=>"javax.mail:mail:1.4.4"
},
{
"repo"=>"maven",
"artifact_id"=>"org.postgresql:postgresql:9.3-1100-jdbc41"
}
]
}
}

27. FINALLY DEFINE AN INSTANCE
default['tcc']['instances']={
"syndev"=>{
"template"=>"synapso",
"user"=>"lgazo"
}
}

28. AND TELL TCC COOKBOOK TO LOOK FOR
TEMPLATES IN OUR COOKBOOK
default['tcc']['template_cookbooks']="mycookie"

29. PREPARE DATABASE IF NEEDED
include_recipe"database::postgresql"
postgresql_connection_info={
:host =>'localhost',
:port =>node['postgresql']['config']['port'],
:username=>'postgres',
:password=>node['postgresql']['password']['postgres']
}
postgresql_database_user"synapso"do
connectionpostgresql_connection_info
passwordnode.postgresql.password.synapso
action:create
end
postgresql_database"synapso"do
connectionpostgresql_connection_info
owner"synapso"
action:create
end
postgresql_database"synapsousercancreateDB"do
connection postgresql_connection_info
sql"alterrole#{node.synapso.user}withcreatedb"
action:query
end

30. in aserver you can monitor itdirectly
INCLUDE TCC
include_recipe"tcc::default"
include_recipe"tcc::templates"
include_recipe"tcc::instances"<fontcolor="#333333"face="Lato,sans-serif"><spanstyle=
</span></font>
include_recipe"tcc::newrelic"

31. AND NOW THE CONFIGURATION OF
INSTANCES
into templates/default/tcc/templates/synapso/conf
defaultenvironmentis named “_default”
context.xml(incurrentversionitisnotChefenvironmentspecific)
jmx.properties(incurrentversionitisnotChefenvironmentspecific)
resources-
connector.csv
db.csv
env.csv
mail.csv
rmi.csv
setenv.csv

32. TCC MONITORING
JMX
portand access configured in:
jmx.properties and
setenv.csv
NEWRELIC
includerecipetcc::newrelic

33. QUESTIONS?
@ladislavGazo
gazo@seges.sk

34. THANK YOU... FOR...
ATTENTION