I have a multi-hop setup for ssh, and I would like to replicate that with mosh.You must be connecting through the UMN network to access MSI servers. Does mosh bypass the requirement to be on-campus or tunneling through the UofM VPN?.Additionally, host reboots will sever any existing connections, and you will have to reconnect from your local terminal once the servers are back online. Mosh will not allow you to connect to MSI servers or maintain a connection to MSI servers during downtime or maintenance periods. You can, however, “chain” mosh and ssh commands, just like you can with ssh (see question 2 in the FAQ). Mosh does not support multi-hop connections like ssh does. It will not be used to connect to Mesabi or Itasca, once you are connected to the login node. Mosh is only available for connection to the login node from your local terminal. Mosh does not have a replacement for “scp” - if you need support for remote file transfer over intermittent connections, you should use “rsync,” which can resume transfers that did not complete successfully. Mosh currently does not support X11 forwarding, so graphical applications will not work over a mosh connection. Anecdotally, mosh has successfully maintained connection to MSI through computer sleeps and building transitions, for example, when moving a laptop from an office to a seminar room. Therefore, mosh is more likely to be helpful on the Saint Paul campus of our university than on the East Bank or West Bank campuses. The use case for mosh is one in which you need responsive and persistent connections across intermittent network connectivity. From there, you can connect to an interactive HPC session, or to the head node of a non-interactive HPC system to submit jobs. You may be prompted to verify the identity of the host machine. Connect to MSI Login NodeĬurrently, the only login node that supports mosh is “login01.” To use mosh to connect to this node, open a terminal emulator and type the following command: Mosh is also available in the ports trees of FreeBSD, OpenBSD, NetBSD, and OpenCSW. As of September 2018, there are packages for Alpine, Arch, Debian, Fedora, openSUSE, and Ubuntu, with emerge for Gentoo systems. Mosh is available as pre-built packages most Linux distributions. pkg file that is distributed from their server ( ), or installed with the Homebrew package manager ( ). You can install the Google Chrome extension ( ), or use Cygwin ( ) to install a Windows version of mosh. Unfortunately, there is not a native program to run mosh on Windows. It is robust to intermittent disconnections from the network and changes in IP address, such as with weak or overbooked Wi-Fi signals. Mosh (mobile shell) is a drop-in replacement for ssh for remote access to MSI servers.
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