Category Archives: System Administration

JIRA Export Import Project Issues

This is a topic that seems to be poorly documented – exporting and importing projects between JIRA instances. There is an entire system backup, but the documentation makes it clear that restoring individual projects from the system backup is not … Continue reading

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Exchange Offline Address Book Troubleshooting

The Exchange Offline Address Book (OAB) for Outlook clients can be a difficult beast to troubleshoot. When it’s not working correctly, Outlook clients may fail to report an error and continue to synchronize stale Global Address List records. Here are … Continue reading

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Cisco ASA Command Line Basics

This post is for people who are new to the Cisco ASA command line, or seasoned network administrators like myself who need to review or brush up on the command line basics for the ASA console. Instead of using my … Continue reading

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SSSD-AD TGT failed verification

Users of RHEL 7 and CentOS 7 on Windows Active Directory networks are likely enjoying the benefits of using the SSSD-AD domain-join client module along with the Realmd tool which facilitates proper management of SSSD client configuration (a very complex … Continue reading

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Get Rid of virbr0

In RHEL 7.x and CentOS 7.x you may see an odd extra network interface listed as “virbr0” (virtual bridge zero). This is provided as a default way to share the host physical network with private guest virtual machines. Unfortunately this … Continue reading

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Jetty Dropped AJP Support. Use Tomcat

Apache Tomcat ships with an optimized load balancing / reverse proxy protocol known as AJP or more formally as the Apache Tomcat Connector specification. This makes Tomcat a top choice among the many Java Servlet and JSP web app containers … Continue reading

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Tomcat Multiple Instances RHEL 7 CentOS 7

This is a follow-on to my earlier posts Apache Tomcat in RHEL 7 and RHEL 7 Administration Notes. This builds on the goal to use the system packaged Tomcat and Java software in order to receive security and bug fix … Continue reading

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SharePoint API Invoke-RestMethod PowerShell

Invoke-RestMethod was introduced in PowerShell 3.0, but unfortunately there is a bug that prevents the user from setting the “Accept” header. The SharePoint 2013 REST API requires special values applied to the Accept header to return common items like list … Continue reading

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Subversion Windows Deduplication Bug

Windows Server 2012 introduced a valuable Data Deduplication feature to reduce physical storage needs on storage volumes where muliple copies of identical data reside. Unfortunately, the way this feature is implemented is visible to client programs in the form of … Continue reading

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Redirect ASP.Net Default Page

Here’s a simple server-side ASP.Net default page redirect example using C# and a typical default.aspx file. This should work with most recent versions of IIS. Key items listed for searchability: page directive, language attribute, script block, runat server, page_load, response.redirect. … Continue reading

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