Deploy and configure LXD cluster

[TomEros]

Deploy in one command line the LXD cluster

[Benvii]

Identified bugs in the script :

• cat on ssh key not evaluated on the host (but in the container)
• IP of the slave is wrong/empty

Setup ssh
bash: /root/.ssh/authorized_keys: No such file or directory
bash: /root/.ssh/authorized_keys: No such file or directory
Warning: Permanently added '10.224.142.15' (ECDSA) to the list of known hosts.
Permission denied (publickey).
ssh: Could not resolve hostname : Name or service not known
[...]
Finish !
You are now ready to use this container with ansible
Ip of master : 10.224.142.15 Ip of slave : 

[Benvii]

We should add to this script :

• generate Ansible hosts automatically
• add OPV_Master entry in /etc/hosts on the host

[Benvii]

lxc creates the .ssh directory but we need to wait.

The following script show this behavior :

#!/bin/bash
containerName="toto"
lxc launch ubuntu:16.04 $containerName

lxc exec $containerName -- bash -c "[ -d ~/.ssh/ ]"
dirExist=$?
until [ $dirExist -eq 0 ]
do
    echo ".ssh doesn't exists waiting a bit"
    sleep 0.1
    lxc exec $containerName -- bash -c "[ -d ~/.ssh/ ]"
    dirExist=$?
done

lxc exec $containerName -- bash -c "ls -la ~/.ssh/"

So we should implement a wait function before trying to add the sshKey, same for ip :

#!/bin/bash
containerName="toto"
lxc launch ubuntu:16.04 $containerName

ip=`lxc info $containerName | grep -P "eth0:\tinet\t" | awk '{print $3}'`
until ! [ -z $ip ]
do
    printf "."
    sleep 0.1
    ip=`lxc info $containerName | grep -P "eth0:\tinet\t" | awk '{print $3}'`
done

printf "\nIP of %s is : %s\n" $containerName $ip

@zyioump can you implement that ? Use bash functions to do it.