Ansible Rocks

Even when you don't want to create playbooks http://docs.ansible.com/ansible/intro_adhoc.html

Real help with farms of virtual appliances in OpenStack or AWS

Automating tasks over telnet.

Ok. So it is a Stone Age and no one knows what SSH is. Everybody is using telnet.

Let's automate a service restarting task.

Cool and easy as 1,2,3.

{ \

 sleep 2; \

 echo "root"; \

 sleep 2; \

 echo "password"; \

 sleep 2; \

 echo "ps ax | grep my_cool_service"; \

 sleep 2; \

 echo "OLD_SERVICE_PID=\`ps ax | grep my_cool_service | awk '{print \$1}'\` && kill \$OLD_SERVICE_PID"; \

 sleep 2; \

 echo "service my_cool_service start && ps ax |grep my_cool_service"; \

 sleep 4; \

 } | telnet 10.10.10.10

  

SSH Port Forward multiple hops

Let's use VNC server two hops away.

ssh -4 -v -A -t -L 15902:localhost:15902 user1@host1 \
ssh -4 -v -A -L    15902:localhost:5900  user2@host2

vncviewer localhost:15902