Thanks Ryan, yes, from the machine where the browser is on slave hostnames could not be resolved, so that's why failure, but it can reach them by IP address( I don't think sys admin would like to add those VMs entries to /etc/hosts on the server). I tried to change masters and slaves of mesos to IP addresses instead of hostname but UI still points to hostnames of slaves. Is threre a way to let mesos only use IP address of master and slaves?
Cheers, Dan 2015-01-22 9:48 GMT-06:00 Ryan Thomas <[email protected]>: > It is a request from your browser session, not from the master that is > going to the slaves - so in order to view the sandbox you need to ensure > that the machine your browser is on can resolve and route to the masters > _and_ the slaves. > > The master doesn't proxy the sandbox requests through itself (yet) - they > are made directly from your browser instance to the slaves. > > Make sure you can resolve the slaves from the machine you're browsing the > UI on. > > Cheers, > > ryan > > On 22 January 2015 at 15:42, Dan Dong <[email protected]> wrote: > >> Thank you all, the master and slaves can resolve each others' hostname >> and ssh login without password, firewalls have been switched off on all the >> machines too. >> So I'm confused what will block such a pull of info of slaves from UI? >> >> Cheers, >> Dan >> >> >> 2015-01-21 16:35 GMT-06:00 Cody Maloney <[email protected]>: >> >> Also see https://issues.apache.org/jira/browse/MESOS-2129 if you want to >>> track progress on changing this. >>> >>> Unfortunately it is on hold for me at the moment to fix. >>> >>> Cody >>> >>> On Wed, Jan 21, 2015 at 2:07 PM, Ryan Thomas <[email protected]> >>> wrote: >>> >>>> Hey Dan, >>>> >>>> The UI will attempt to pull that info directly from the slave so you >>>> need to make sure the host is resolvable and routeable from your browser. >>>> >>>> Cheers, >>>> >>>> Ryan >>>> >>>> From my phone >>>> >>>> >>>> On Wednesday, 21 January 2015, Dan Dong <[email protected]> wrote: >>>> >>>>> Hi, All, >>>>> When I try to access sandbox on mesos UI, I see the following info( The >>>>> same error appears on every slave sandbox.): >>>>> >>>>> "Failed to connect to slave '20150115-144719-3205108908-5050-4552-S0' >>>>> on 'centos-2.local:5051'. >>>>> >>>>> Potential reasons: >>>>> The slave's hostname, 'centos-2.local', is not accessible from your >>>>> network The slave's port, '5051', is not accessible from your network" >>>>> >>>>> >>>>> I checked that: >>>>> slave centos-2.local can be login from any machine in the cluster without >>>>> password by "ssh centos-2.local "; >>>>> >>>>> port 5051 on slave centos-2.local could be connected from master by >>>>> "telnet centos-2.local 5051" >>>>> The stdout and stderr are there on each slave's /tmp/mesos/..., but seems >>>>> mesos UI just could not access it. >>>>> (and Both master and slaves are on the same network IP ranges). Should I >>>>> open any port on slaves? Any hint what's the problem here? >>>>> >>>>> Cheers, >>>>> Dan >>>>> >>>>> >>> >> >
