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}}} [[TOC]] We have two OS images with support for [http://read.cs.ucla.edu/click The Click Modular Router]: Ubuntu804-click and Ubuntu1004-click20. We support click 1.8 (in Ubuntu804-click) and click 2.0 (in Ubuntu1004-click20). === Ubuntu804-click === Ubuntu804-click is based on Ubuntu804-STD with the following modifications * loads as a full disk image with about 15 GB free on / * kernel 2.6.24.7-click * vanilla 2.6.24.7 with click patch * [attachment:linux-2.6.24.7-click.config kernel config] * click 1.8.0 installed in /usr/local * click and kernel source in /usr/src === Ubuntu1004-click20 === Ubuntu1004-click20 is based on Ubuntu1004-STD with the following modifications * loads as a full disk image with about 12 GB free on / * stock Ubuntu kernel * click 2.0 installed in /usr/local * click source in /usr/src == Using click == click is installed in {{{/usr/local}}}. If you do not require custom modules, the images should be usable out of the box. === Running the example === For a simple example, download [attachment:test.click test.click] and copy it to your home directory on users. On a node running Ubuntu804-click or Ubuntu1004-click20, run the following command: {{{ sudo click-install test.click }}} This will install the example configuration into click running in the kernel. If it succeeds, you should see output similar to the following by running {{{dmesg}}} or reading {{{/var/log/kern.log}}}: {{{ [66530.612983] chatter: ok: 40 | 45000028 00000000 401177c3 01000001 02000002 13691369 [66530.620905] chatter: ok: 40 | 45000028 00000000 401177c3 01000001 02000002 13691369 [66530.628821] chatter: ok: 40 | 45000028 00000000 401177c3 01000001 02000002 13691369 [66530.636725] chatter: ok: 40 | 45000028 00000000 401177c3 01000001 02000002 13691369 [66530.644618] chatter: ok: 40 | 45000028 00000000 401177c3 01000001 02000002 13691369 }}} == Building custom modules == The source for click is in {{{/usr/src/click-1.8.0}}} or {{{/usr/src/click-2.0}}}. Custom modules are typically built in the local elements folder. Copy your source files into {{{/usr/src/click-1.8.0/elements/local}}} or {{{/usr/src/click-2.0/elements/local}}} and give configure the {{{--enable-local}}} flag. === Ubuntu804-click === In click 1.8, you must give configure the path to the kernel source. {{{ $ sudo -s # cd /usr/src/click-1.8.0 # ./configure --with-linux=/usr/src/linux-2.6.24.7 --enable-local }}} === Ubuntu1004-click20 === {{{ $ sudo -s # cd /usr/src/click-2.0 # ./configure --enable-local }}} === Building and installing === At this point building and installing is as simple as: {{{ # make && make install }}} == Further Reading == * [http://read.cs.ucla.edu/click Click Module Router] * [http://read.cs.ucla.edu/click/examples click examples] * [UbuntuImage general Ubuntu image info]