diff --git a/bin/0km b/bin/0km
index b875911..dc3d343 100755
--- a/bin/0km
+++ b/bin/0km
@@ -161,7 +161,7 @@ ssh:run() {
     done
     {
         {
-            ssh -o ControlPath=/tmp/ssh-control-master-${master_pid} \
+            ssh -o ControlPath=/tmp/ssh-control-master-${master_pid}-$hostname \
                 -o ControlMaster=auto -o ControlPersist=900 \
                 -o "StrictHostKeyChecking=no" \
                 "$hostname" "${ssh_options[@]}" -- "${cmd[@]}"
@@ -195,6 +195,26 @@ is_ovh_hostname() {
     return 1
 }
 
+vps_check() {
+    local vps="$1"
+    ip=$(resolve "$vps") ||
+        { echo "no-resolve"; return; }
+
+    ping -c 1 -w 1 "$ip" >/dev/null 2>&1 ||
+        { echo "no-ping"; }
+    is-port-open "$ip" "22" ||
+        { echo "no-port-22-open"; return; }
+
+    ssh:open -o ConnectTimeout=2 -o PreferredAuthentications=publickey \
+             "root@$vps" >/dev/null 2>&1 ||
+        { echo "no-ssh-root-access"; return; }
+    compose_content=$(ssh:run "root@$vps" -- cat /opt/apps/myc-deploy/compose.yml </dev/null) ||
+        { echo "no-compose"; return; }
+    echo "$compose_content" | grep backup >/dev/null 2>&1 ||
+        { echo "no-backup"; return; }
+}
+
+
 
 [ "$SOURCED" ] && return 0
 
@@ -340,4 +360,28 @@ cmdline.spec::cmd:vps-setup:run() {
 }
 
 
+
+cmdline.spec.gnu vps-check
+
+cmdline.spec::cmd:vps-check:run() {
+
+    : :posarg: [VPS...]        'Target host to check'
+
+    VPS=($(printf "%s\n" "${VPS[@]}" | sort))
+    declare -A vps_done;
+    for vps in "${VPS[@]}"; do
+        [ "${vps_done[$vps]}" ] && {
+            warn "duplicate vps '$vps' provided. Ignoring."
+            continue
+        }
+        vps_done[$vps]=1
+        (
+            vps_check "$vps" 2>&1 | sed "s/^/$vps: /g"
+            [ "${PIPESTATUS[0]}" == 0 ]
+        ) &
+    done
+    wait
+}
+
+
 cmdline::parse "$@"