How to Install Xvfb (X Virtual Framebuffer) on Redhat 6.5

How to install Xvfb on RH8?

The only way to do this (without an RHEL subscription) is to do the following installs which work only when in this order:

yum install -y libXScrnSaver \
mesa-libgbm nss at-spi2-atk libX11-xcb \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/libxkbfile-1.0.9-9.el8.x86_64.rpm \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/xorg-x11-xkb-utils-7.7-26.el8.x86_64.rpm \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/xorg-x11-server-common-1.20.2-5.el8.x86_64.rpm \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/xorg-x11-xauth-1.0.9-12.el8.x86_64.rpm \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/libXdmcp-1.1.2-11.el8.x86_64.rpm \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/libXfont2-2.0.3-2.el8.x86_64.rpm \
ftp://ftp.redhat.com/pub/redhat/rhel/rhel-8-beta/appstream/x86_64/Packages/xorg-x11-server-Xvfb-1.20.2-5.el8.x86_64.rpm;

I don't know why it's so difficult.

How to install liquibase on redhat linux

If you have access to another computer with a browser. Go to http://www.liquibase.org/download and copy the path to the liquibase zip file. Paste that path onto a wget command as in the example below

wget https://github.com/downloads/liquibase/liquibase/liquibase-2.0.5-bin.zip

unzip the zip file in the location of your choice such as ~/liquibase

Once you are done you will have to manually create your liquibase.properties file.

How do I test a message queue client?

I don't think there's anything wrong with writing unit tests to determine/document the behavior of an external library. If you include that test in your code base, then you have a record of the fact that your queue needs to support UTF8; if you change to a different queueing mechanism in the future, that test will break and need to be rewritten, forcing the implementer of the new queueing mechanism to consider whether the new system can also handle UTF8. That's a good thing, in my opinion.

As for setting this up in your CI, my suggestion is that you classify this as an integration test and run it on a CI machine that has queueing support installed, if you have one.

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