如何使用盐堆栈创建和启用永久的 1GB 交换文件，该文件将在重新启动后起作用？salt.states.mount.swap不允许定义交换大小。此外，我需要定义swappiness。目前我这样做echo vm.swappiness = 10 | sudo tee -a /etc/sysctl.conf
使用 rsync 时出现此错误：
$ rsync -av server:file .
Unable to negotiate with 10.1.1.50 port 22: no matching host key type found. Their offer: ssh-dss
rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(226) [Receiver=3.1.1]
如何解决？