Thanks for the explanation. It definitely clarifies things. My usage of Jenkins slaves is all theoretical at this point (working on a new master+multi-slave setup soon) so my terminology is slightly off.
On Wed, Oct 10, 2012 at 8:47 PM, Richard Lavoie <lavoie.rich...@gmail.com>wrote: > Comments inlined. > > On Wed, Oct 10, 2012 at 7:59 PM, Jeff <predato...@gmail.com> wrote: > >> Your suggested file uri format works ... thanks! Though it seems non >> standard (http://en.wikipedia.org/wiki/File_URI_scheme) which is why it >> confused me. If it is passed directly to a java URL object, I would have >> thought many of the formats I tried would work. >> >> >> Anyway, as for the "matching" I'm still trying to digest the nuances of >> how jenkins nodes and selenium nodes work together. >> >> Is a "jenkins node" the same as a Jenkins slave? >> > > Yup, but the jenkins master is also a jenkins node. So you can also run > selenium node configuration on the master. > > Internally of jenkins, all the slaves are what I called jenkins nodes. The > jenkins master also runs a "computer" object internally of jenkins. > > >> >> If so, then if I use the "Match nodes from a label expression" option, I >> can associate a specific "selenium node" configuration to a subset of >> Jenkins slaves where the Jenkins slave name matches the given label >> expression? >> >> So for example, if I have slaves called LinuxSlave-1, LinuxSlave-2, >> WindowsSlave-1, WindowsSlave-2 and I have a "selenium node" configuration >> with a label expression like "Windows*", then that selenium node >> configuration would be sent to all jenkins Windows slaves? >> >> If that is not correct, could you outline an example? >> > > In each of your slaves (http://jenkins/manage/node/NODENAME_OR_(master)/) > , there is a field configuration for label expressions, the "Match from a > label expression" uses that field to match against that slave. It doesn't > take the name of the node but the label options. Although I could add > another matcher for slave names. Might add that in the next version, thanks > for the idea but it's just that most plugins tries to use the labels > instead of node names because the names doesn't really describe it as good > as label can do. I mean that you can have multiple label that would defined > what your slave is really about while the name is only a single label to > recognize it. > > >> >> > >> If I have a Jenkins Master with multiple Jenkins slaves, does the SeGrid2 >> plugin run one "hub" on the master and zero or more seleniuim "hub"s on the >> master and/or slaves? >> > > The plugin spawns the grid hub on the master on start. All the node > configurations spawns a selenium process with "-role node" option and > connects to the jenkins master grid hub. It is correct that a slave can > have 0 or more configurations running on it. > > > Let's make a not so complex example: > > > Master is configure with label master. > Let's say you have 5 slaves, Windows1 (labels Windows, IE), Windows2 > (labels Windows), Linux1 (Labels Linux), Linux2 (labels Linux), Solaris > > Then you create 5 selenium configurations: > 1. This configuration matcher on All nodes and specifies 5 instances of > firefox browsers > 2. This configuration matches on Nodes that have label Windows and spawns > 5 instances of chrome > 3. This configuration matches on Nodes that have label IE and spawns 1 > instance of IE > 4. This configuration matches on Nodes that have label Linux and spawns 3 > instances of chrome > 5. This configuration matches no nodes as it was a test and you "disabled" > it. > > In the end what would happen (when the slaves are started or when jenkins > starts) > > Master jenkins would run the hub (always running even if there are no > configuration in the system) and configuration 1 > Windows1 would run configuration 1,2,3 > Windows2 would run configuration 1,2 > Linux1 would run configuration 1,4 > Linux2 would run configuration 1,4 > Solaris would run configuration 1 > > All the slave nodes would connect to the jenkins master selenium hub, and > you will be able to see that from http://jenkins/selenium > > You also have to note that changing a configuration won't have any effect > on the running selenium processes on the slaves. To put the changes into > effect, you have to either restart the service from the slave > configuration page or by clicking on the node matching that configuration, > or restart jenkins (a bit too much, that's why the restart service option > exists) > > Does that explains better the plugin ? > > > >> Thank you! >> >> On Wed, Oct 10, 2012 at 4:51 PM, Richard Lavoie <lavoie.rich...@gmail.com >> > wrote: >> >>> Comments inlined. >>> >>> On Wed, Oct 10, 2012 at 4:22 PM, Jeff <predato...@gmail.com> wrote: >>> >>>> I'm missing something simple and the documentation for the Selenium >>>> Grid Plugin doesn't cover these in any detail. I'm using the latest >>>> Selenium Plugin with Jenkins v1.482. >>>> >>>> *First:* >>>> >>>> I can't get the plugin to find my JSON file that I'm trying to use to >>>> configure the node. I've tried the following: >>>> >>>> C:\.jenkins\SeleniumNodeConfig\nodecfg.json >>>> C:/.jenkins/SeleniumNodeConfig/nodecfg.json >>>> C:\\.jenkins\\SeleniumNodeConfig\\nodecfg.json >>>> file:///C:/.jenkins/SeleniumNodeConfig/nodecfg.json >>>> file:////.jenkins/SeleniumNodeConfig/nodecfg.json >>>> C:/Temp/nodecfg.json >>>> file:///C:/Temp/nodecfg.json >>>> >>>> >>> >>> did you try file:/c:/Temp/nodecfg.json ? >>> >>> >>> I'll try to look into it tonight to at least add some examples. I >>> thought people would prefer using the HTTP scheme than local files for >>> distributed environment. >>> >>> >>>> But Jenkins throws a NullPointerException during startup in each case: >>>> >>>> java.lang.NullPointerException >>>> at >>>> hudson.plugins.selenium.PluginImpl.getGlobalConfigurationForComputer(PluginImpl.java:598) >>>> at >>>> hudson.plugins.selenium.PluginImpl.startSeleniumNode(PluginImpl.java:505) >>>> at >>>> hudson.plugins.selenium.ComputerListenerImpl.onOnline(ComputerListenerImpl.java:26) >>>> at jenkins.model.Jenkins.<init>(Jenkins.java:832) >>>> at hudson.model.Hudson.<init>(Hudson.java:81) >>>> at hudson.model.Hudson.<init>(Hudson.java:77) >>>> at hudson.WebAppMain$2.run(WebAppMain.java:214) >>>> >>>> What am I missing? >>>> >>>> >>>> >>>> *Second:* >>>> >>>> Can anyone explain the "Matching type" setting in the node >>>> configuration editor? I am not grasping what it is "matching" to? I >>>> thought that the configuration is defining the node itself so how or what >>>> is it matching to? >>>> >>>> >>>> >>> The concept of configurations in this plugin is global to all nodes. It >>> will try to apply all the "matching" configurations to every nodes it can >>> work on. So when a node comes online, for each configurations defined, it >>> will ask the matcher if this configuration is allowed on this node. There >>> are currently 3 matchers, All (will run this configuration on all the >>> nodes), None (will run it on no nodes, hence disable a configuration) and >>> label matching where the configuration will run on this node only if this >>> computer label matches the specified label expression. >>> >>> There is a distinction to make in between a selenium node (a running >>> java process on the machine) and the jenkins computer node (the machine >>> slave/master that will host the selenium java process) >>> >>> While this plugin creates selenium node configurations, the selenium >>> configurations are applied to jenkins computer nodes. >>> >>> Hope that clarifies it. >>> >>> >>> Thanks! >>>> >>>> -- >>>> Jeff Vincent >>>> predato...@gmail.com >>>> See my LinkedIn profile at: >>>> http://www.linkedin.com/in/rjeffreyvincent >>>> I ♥ DropBox <http://db.tt/9O6LfBX> !! >>>> >>>> >>> >>> >>> -- >>> Richard Lavoie >>> IT consultant / consultant en informatique >>> >> >> >> >> -- >> Jeff Vincent >> predato...@gmail.com >> See my LinkedIn profile at: >> http://www.linkedin.com/in/rjeffreyvincent >> I ♥ DropBox <http://db.tt/9O6LfBX> !! >> >> > > > -- > Richard Lavoie > IT consultant / consultant en informatique > -- Jeff Vincent predato...@gmail.com See my LinkedIn profile at: http://www.linkedin.com/in/rjeffreyvincent I ♥ DropBox <http://db.tt/9O6LfBX> !!
