With a single master, you should not set quorum=2
-------- Original message -------- From: sujinzhao <sujinz...@gmail.com> Date:11/06/2014 4:01 PM (GMT-05:00) To: user@mesos.apache.org Cc: Subject: Problems of running mesos-0.20.0 with zookeeper Hi,all, I set up zookeeper service with three machines zoo1, zoo2, zoo3, and also installed 1 mesos master and 2 slaves on another three nodes, I tried to run master and slaves with: ./mesos-master.sh --ip=master-ip --zk=zk://zoo1:2181,zoo2:2181,zoo3:2181/mesos --quorum=2 ./mesos-slave.sh --ip=slave-ip --master=zk://zoo1:2181,zoo2:2181,zoo3:2181/mesos I also created the /mesos znode before running the above commands, but I got the following error: Recovering from registrar Recovering registrar Recovery failed: Failed to recover registrar: Failed to perform fetch within 1mins *** Check failure stack trace: *** @ 0x7f3c1ea105cd google::LogMessage::Fail() ............................... after reading the master log, I found that before causing error, master has already been elected successfully, but the leader failed in recovering from registrar, so I guess this error has little relationship with zookeeper. after googleing I found that other people also encountered this problem, but with no solution, I also exclude the possible reason of ssh between master/slave and zookeeper servers with no password. So, could somebody be kindly to tell me how to solve this error? any suggestions will be appreciated. THANKS.