diff --git a/userdata/README.md b/userdata/README.md
new file mode 100644
index 0000000..57df916
--- /dev/null
+++ b/userdata/README.md
@@ -0,0 +1,2 @@
+# E.G. to boot 20 instances
+openstack server create --user-data ansible101.sh --min 20 --max 20 --flavor d2-4 --image 'Debian 11' --net Ext-Net --key-name arnaud-choupinette isen-
diff --git a/userdata/ansible101.sh b/userdata/ansible101.sh
index 104337a..9dead03 100644
--- a/userdata/ansible101.sh
+++ b/userdata/ansible101.sh
@@ -26,7 +26,9 @@ function title.print {
 exec &> >(log_handler)
 
 title.print "Permit root login"
+sed -i '/PasswordAuthentication no/d' /etc/ssh/sshd_config
 echo 'PasswordAuthentication yes' >> /etc/ssh/sshd_config
+sed -i '/PermitRootLogin no/d' /etc/ssh/sshd_config
 echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
 echo '' > /root/.ssh/authorized_keys
 echo -e "moutarde42\nmoutarde42" | passwd root
@@ -50,7 +52,7 @@ wget https://www.arnaudmorin.fr/tmux.conf -O /root/.tmux.conf
 wget https://www.arnaudmorin.fr/plikrc -O /root/.plikrc
 wget https://www.arnaudmorin.fr/plik -O /usr/local/bin/plik
 chmod +x /usr/local/bin/plik
-echo 'if [[ -n "$PS1" ]] && [[ -z "$TMUX" ]] && [[ -n "$SSH_CONNECTION" ]]; then tmux new-session -A -s ssh_tmux ;fi' >> /root/.bashrc
+#echo 'if [[ -n "$PS1" ]] && [[ -z "$TMUX" ]] && [[ -n "$SSH_CONNECTION" ]]; then tmux new-session -A -s ssh_tmux ;fi' >> /root/.bashrc
 
 title.print "Install docker"