TEACHER-NOTES.md

Debugging Master Classes

---

Notes only valid for pdsh deployed labs

Various notes & commands for whoever is running the class

Set the list of hosts:

hosts=hostname1,hostname2,hostname3,
## or programatically

Set environment for pdsh

export PDSH_SSH_ARGS_APPEND="-l student -i ${HOME}/.ssh/student.pri.key -o ConnectTimeout=5 -o CheckHostIP=no -o StrictHostKeyChecking=no -o RequestTTY=force"

Update ambari-bootstrap

command="cd /opt/ambari-bootstrap; git pull"
pdsh -w ${hosts_all} "${command}"

Check hosts

command="uptime"
pdsh -w ${hosts_all} "${command}"