• docker错误


    

    错误:cannot enable tty mode on non tty input

    错误产生:

    root@machine1:/data# echo test|docker exec -i 68b cat  test 
    
    root@machine1:/data# echo test|docker exec -it 68b cat 
    
    cannot enable tty mode on non tty input
    

    问题在于,当使用-it时,容器为我们分配了伪终端,等待我们从终端输入数据到伪终端的标准输入。但我们的输入方式却不是从终端,有可能是重定向和管道。官网对于it参数的解释:

    But we’ve also passed in two flags: -t and -i. The -t flag assigns a pseudo-tty or terminal inside our new container and the -i flag allows us to make an interactive connection by grabbing the standard in (STDIN) of the container.


    In foreground mode (the default when -d is not specified), docker run can start the process in the container and attach the console to the process’s standard input, output, and standard error. It can even pretend to be a TTY (this is what most command line executables expect) and pass along signals. All of that is configurable:

    -a=[]           : Attach to `STDIN`, `STDOUT` and/or `STDERR`
    -t=false        : Allocate a pseudo-tty
    --sig-proxy=true: Proxify all received signal to the process (non-TTY mode only)
    -i=false        : Keep STDIN open even if not attached
    

    If you do not specify -a then Docker will attach all standard streams. You can specify to which of the three standard streams (STDINSTDOUTSTDERR) you’d like to connect instead, as in:

    $ docker run -a stdin -a stdout -i -t ubuntu /bin/bash
    

    For interactive processes (like a shell), you must use -i -ttogether in order to allocate a tty for the container process. -i -t is often written -it as you’ll see in later examples. Specifying -t is forbidden when the client standard output is redirected or piped, such as in: echo test | docker run -i busybox cat.

    解决方法:某些情况下it不能同时使用


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  • 原文地址:https://www.cnblogs.com/ggzone/p/10121213.html
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