add optional tls to installer

Author: pshankinclarke

install/valkey-install.sh

@@ -32,10 +32,53 @@ echo "# Memory-optimized settings for small-scale deployments" >> /etc/valkey/va
 echo "maxmemory ${MAXMEMORY_MB}mb" >> /etc/valkey/valkey.conf
 echo "maxmemory-policy allkeys-lru" >> /etc/valkey/valkey.conf
 echo "maxmemory-samples 10" >> /etc/valkey/valkey.conf
+msg_ok "Installed Valkey"
+
+read -r -p "${TAB3}Would you like to enable TLS for Valkey (Note: sentinel mode does not support TLS)? [y/N]: " prompt
+if [[ ${prompt,,} =~ ^(y|yes)$ ]]; then
+    read -r -p "${TAB3}Would you like Valkey to listen only on TLS (disable TCP port 6379)? [y/N]: " tls_only
+    msg_info "Configuring TLS for Valkey..."
+    TLS_DIR="/etc/valkey/tls"
+    mkdir -p "$TLS_DIR"
+    chown valkey:valkey "$TLS_DIR"
+    chmod 750 "$TLS_DIR"
+
+    openssl req -x509 -nodes -newkey rsa:2048 -days 3650 \
+      -subj "/CN=$(hostname)" \
+      -keyout "$TLS_DIR/valkey.key" \
+      -out "$TLS_DIR/valkey.crt" \
+      >/dev/null 2>&1
+
+    chown valkey:valkey "$TLS_DIR"/valkey.{crt,key}
+    chmod 640 "$TLS_DIR/valkey.crt"
+    chmod 600 "$TLS_DIR/valkey.key"
+
+    if [[ ${tls_only,,} =~ ^(y|yes)$ ]]; then
+    {
+      echo ""
+      echo "# TLS configuration generated by Proxmox VE Valkey helper-script"
+      echo "port 0"
+      echo "tls-port 6379"
+      echo "tls-cert-file $TLS_DIR/valkey.crt"
+      echo "tls-key-file $TLS_DIR/valkey.key"
+      echo "tls-auth-clients no"
+    } >> /etc/valkey/valkey.conf
+    msg_ok "Enabled TLS-only mode on port 6379"
+    else
+    {
+      echo ""
+      echo "# TLS configuration generated by Proxmox VE Valkey helper-script"
+      echo "tls-port 6380"
+      echo "tls-cert-file $TLS_DIR/valkey.crt"
+      echo "tls-key-file $TLS_DIR/valkey.key"
+      echo "tls-auth-clients no"
+    } >> /etc/valkey/valkey.conf
+    msg_ok "Enabled TLS on port 6380 and TCP on 6379"
+    fi
+fi
 
 systemctl enable -q --now valkey-server
 systemctl restart valkey-server
-msg_ok "Installed Valkey"
 
 motd_ssh
 customize