Upgrade to Oracle Java SE 8u51
Update without issues, but restart of all depended services took ages.
git
Upgrade to Atlassian Stash 3.11.0
No problems. two plugin updates available and done successfully.
jenkins
Upgrade to Jenkins 1.620
No problems and some plugin updates, too.
tomcat
Upgrade to Apache Tomcat 8.0.24
Update procedure smooth.
jenkins
Upgrade to Jenkins 1.619
Smooth upgrade including some plugin updates.
atlassian
Upgrade to Atlassian JIRA 6.4.7
Smooth update. Update available for HipChat and JIRA Agile.
atlassian
Upgrade to Atlassian Confluence 5.8.5
No problems whatsoever. One plugin has to be updated.
elk
Upgrade to Kibana 4.1.1
Super easy update.
jenkins
Upgrade to Jenkins 1.618
Smooth upgrade including some plugin updates.
logstash
Automatic Upgrade to Logstash 1.5.2
Automatic yum update with manual service restart.No problems.
git
Upgrade to Atlassian Stash 3.10.2
No problems. Relogin at HipChat service.
elk
Upgrade to Elasticsearch 1.6.0
Easy upgrade, but one config entry mixed up.