Till, Thanks - I did not know that I had to install CyrusSASL which is most likely my issue. I will look for instructions on how install and configure SASL on CentOS 7. BTW - I used http://repos.mesosphere.io/el/7/noarch/RPMS/mesosphere-el-repo-7-1.noarch.rpm to install Mesos v0.22.1. - John From: [email protected] Subject: Re: No Mechanism Available Date: Fri, 8 May 2015 10:17:41 -0700 To: [email protected]
Hey John, looks as if your SASL (CyrusSASL) installation was incomplete or defective as it fails identifying mechanisms usable for authentication: May 08 15:41:47 node1 mesos-slave[6727]: W0508 15:41:47.763337 6734 slave.cpp:762] Failed to authenticate with master [email protected]:5050: Authentication error: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757 Did you build mesos out of the current git master version? How did you install CyrusSASL, which SASL authentication plugins did you install? A common place to look at would be "/usr/lib/sasl2” - that folder would show the installed plugins. Mind that the exact location depends on your distribution or build configuration in case you installed things manually. Till On May 8, 2015, at 9:55 AM, John Webb <[email protected]> wrote: Sorry - It looks like what I copied and paste the service status I missed the end of the lines. It has been updated below now. --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Looking for some direction on what I'm doing wrong with getting Mesos slave authentication working. I'm getting "Failed to authenticate slave(1)@192.168.33.10:5051: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757" after start mesos-slave on the same host. Here are my current settings: /etc/mesos-mater files ------------------------------ authenticate = true authenticate_slaves = true authenticators = crammd5 credentials = /etc/mesos/mesos-config/mesos-master.passwd mesos-master status output ------------------------------------- mesos-master.service - Mesos Master Loaded: loaded (/usr/lib/systemd/system/mesos-master.service; enabled) Active: active (running) since Fri 2015-05-08 15:14:08 UTC; 29min ago Main PID: 6548 (mesos-master) CGroup: /system.slice/mesos-master.service ├─6548 /usr/sbin/mesos-master --zk=zk://localhost:2181/mesos --port=5050 --log_dir=/var/log/mesos --authenticate=true --authenticate_slaves=true --au thenticators=crammd5 --credentials=/etc/mesos/mesos-config/mesos-master.passwd --quorum=1 --work_dir=/var/lib/mesos ├─6566 logger -p user.info -t mesos-master[6548] └─6567 logger -p user.err -t mesos-master[6548]May 08 15:41:47 node1 mesos-master[6567]: I0508 15:41:47.708873 6569 master.cpp:3829] Using default CRAM-MD5 authenticator May 08 15:41:47 node1 mesos-master[6567]: I0508 15:41:47.709044 6569 authenticator.hpp:170] Creating new server SASL connection May 08 15:41:47 node1 mesos-master[6567]: W0508 15:41:47.709228 6569 authenticator.hpp:213] Failed to get list of mechanisms: no mechanism available May 08 15:41:47 node1 mesos-master[6567]: W0508 15:41:47.709421 6569 master.cpp:3871] Failed to authenticate slave(1)@192.168.33.10:5051: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757 May 08 15:41:47 node1 mesos-master[6567]: I0508 15:41:47.710419 6569 master.cpp:3818] Authenticating slave(1)@192.168.33.10:5051 May 08 15:41:47 node1 mesos-master[6567]: I0508 15:41:47.710582 6569 master.cpp:3829] Using default CRAM-MD5 authenticator May 08 15:41:47 node1 mesos-master[6567]: I0508 15:41:47.710753 6569 authenticator.hpp:170] Creating new server SASL connection May 08 15:41:47 node1 mesos-master[6567]: W0508 15:41:47.711504 6569 authenticator.hpp:213] Failed to get list of mechanisms: no mechanism available May 08 15:41:47 node1 mesos-master[6567]: W0508 15:41:47.711690 6569 master.cpp:3871] Failed to authenticate slave(1)@192.168.33.10:5051: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757 May 08 15:41:47 node1 mesos-master[6567]: I0508 15:41:47.712805 6569 master.cpp:3818] Authenticating slave(1)@192.168.33.10:5051 /etc/mesos-slave files ----------------------------- authenticate = crammd5 credential = /etc/mesos/mesos-config/mesos-slave.passwd mesos-slave status output ----------------------------------- mesos-slave.service - Mesos Slave Loaded: loaded (/usr/lib/systemd/system/mesos-slave.service; enabled) Active: active (running) since Fri 2015-05-08 15:41:47 UTC; 6s ago Main PID: 6714 (mesos-slave) CGroup: /system.slice/mesos-slave.service ├─6714 /usr/sbin/mesos-slave --master=zk://localhost:2181/mesos --log_dir=/var/log/mesos --authenticatee=crammd5 --containerizers=docker,mesos --cred ential=/etc/mesos/mesos-config/mesos-slave.passwd ├─6726 logger -p user.info -t mesos-slave[6714] └─6727 logger -p user.err -t mesos-slave[6714]May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.762605 6733 authenticatee.hpp:139] Creating new client SASL connection May 08 15:41:47 node1 mesos-slave[6727]: W0508 15:41:47.763337 6734 slave.cpp:762] Failed to authenticate with master [email protected]:5050: Authentication error: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757 May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.763459 6734 slave.cpp:710] Authenticating with master [email protected]:5050 May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.763620 6734 slave.cpp:715] Using default CRAM-MD5 authenticatee May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.763788 6734 authenticatee.hpp:139] Creating new client SASL connection May 08 15:41:47 node1 mesos-slave[6727]: W0508 15:41:47.765085 6735 slave.cpp:762] Failed to authenticate with master [email protected]:5050: Authentication error: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757 May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.765274 6735 slave.cpp:710] Authenticating with master [email protected]:5050 May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.765455 6735 slave.cpp:715] Using default CRAM-MD5 authenticatee May 08 15:41:47 node1 mesos-slave[6727]: I0508 15:41:47.765751 6735 authenticatee.hpp:139] Creating new client SASL connection May 08 15:41:47 node1 mesos-slave[6727]: W0508 15:41:47.766502 6729 slave.cpp:762] Failed to authenticate with master [email protected]:5050: Authentication error: Failed to get list of mechanisms: SASL(-4): no mechanism available: Internal Error -4 in server.c near line 1757 I'm using principal <whitespace> secret in the mesos-master.passwd and mesos-slave.passwd with no new line after the credentials (aka: echo -n ). - John
