Hi Coty, Have you had an opportunity to try this yet? If you need help please let me know, or you could find help on #snappy on Freenode or https://gitter.im/ubuntu/snappy-playpen (a new slack-like service connected to github)
Michael Hall mhall...@gmail.com On 09/15/2016 10:06 AM, Michael Hall wrote: > Hi Coty, > > To learn more about snaps in general and how to make them you can go to > http://snapcraft.io/ > > The tl;dr is that they are self-contained application bundles, including > dependencies, that are packed into a squashfs that is then loop-mounted > when installed. This means that the application's own files are > read-only and isolated from other apps and the system, which makes > updating them safe and simple. For Tomcat this means it includes a JRE, > OpenSSL, and anything else needed for Tomcat to run. > > I have attached the files needed to build a Tomcat snap using the the > Snapcraft tool (only available on Ubuntu currently), just run "snapcraft > snap" in the same directory as these files. The snapcrafy.yaml will pull > Tomcat 8.5.5 binary tarball as it's source, so no re-compiling is > needed. The run.sh simply sets some environment variables to their > proper snap-environment locations, copies the server.xml into > CATALINE_BASE (if it's not there), and starts Tomcat. > > Because the snapcraft.yaml declares this to be a daemon, it will create > a systemd service file upon installation and start it automatically. > Then you can copy a .war files into $CATALINA_BASE/webapps/ and Tomcat > will pick it up. I tested with the sample.war from > https://tomcat.apache.org/tomcat-8.0-doc/appdev/sample/ and it works > with the servlet portion, but not the JSP (I suspect the JSP compilation > is trying write to use a read-only space, but haven't dug too far into it). > > If you don't run Ubuntu the easiest way to build the snap is in a VM or > container that has Ubuntu 16.04, just install the snapcraft package from > the archive. If you just want to try a pre-built binary, you can > download mine from http://people.ubuntu.com/~mhall119/snaps/ > > You can install it on Ubuntu 16.04 or a derivative right away with "snap > install $snapfile --force-dangerous". The --force-dangerous is required > because the resulting snap won't be signed. On non-Ubuntu distros you > can get snaps running by following the instructions on > http://snapcraft.io/docs/core/install > > > Michael Hall > mhall...@ubuntu.com > > On 09/14/2016 11:23 PM, Coty Sutherland wrote: >> Hi Micheal, >> >> I hadn't heard of snaps (or used Ubuntu much) but the concept seems >> interesting to me. Would you be able to send me links to what you have >> so far so I can check it out? I have a few questions, but I'll reserve >> those until I get a chance to review what you have. >> >> Thanks! >> >> >> On Sep 14, 2016 3:51 PM, "Michael Hall" <mhall...@ubuntu.com >> <mailto:mhall...@ubuntu.com>> wrote: >> >> Hi everyone, >> >> Ubuntu has developed a new platform for deploying applications using >> bundled packages called "snaps". These make it easier to deploy and >> update on Ubuntu independently of it's release cycle (and on non-Ubuntu >> distros too for that matter). I would like to make Tomcat available in >> this format so it can be more easily used on lightweight cloud instances >> or devices like the Raspberry Pi. >> >> I have a working example of Tomcat as a snap, and it works really well >> with a separate read-only CATALINE_HOME and a writable, versioned >> CATALINA_BASE that will allow for atomic updates and rollbacks without >> breaking application data, and it's very easy to use. >> >> The next step is to contribute this to upstream, where it can be >> improved (I've only scratched the surface of what can be done with it) >> and integrated with the CI system so that snap package can be >> automatically created and uploaded for testers and users. This is where >> I need help from somebody on this list, so please let me know if you are >> interested and I will provide you the packaging files (there are only 2) >> and a working binary package if you want to give it a try. >> >> Thanks. >> >> -- >> Michael Hall >> mhall...@ubuntu.com <mailto:mhall...@ubuntu.com> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org >> <mailto:dev-unsubscr...@tomcat.apache.org> >> For additional commands, e-mail: dev-h...@tomcat.apache.org >> <mailto:dev-h...@tomcat.apache.org> >> --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
