Hi Michael, On Tue, Sep 20, 2016 at 3:10 PM, Michael Hall <mhall...@gmail.com> wrote:
> 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) > I am an Ubuntu user and I've tried once Snap. I've installed the featured Notes application and I was amazed to see that it downloaded 60Mb for such a simple application! After being unzipped it is 196MB !! Then I removed it. I hope Canonical will keep .deb around for the near future! About your package: I see it uses "plugs: [network-bind]" to be able to bind the ports, but does this also allow to make connections to external resources like a remote DB for example ? Martin Grigorov Wicket Training and Consulting https://twitter.com/mtgrigorov > > 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 > >
