运行 mysql 通过 ssh 命令

Question

我有一个设置，可以在远程服务器上自动检查日志。我已经创建了这样的方法，它使用 exec 命令来跟踪这样的日志..

Process p = Runtime.getRuntime().exec("ssh <user>@<domain> tail -f /location/logs

我将日志打印到我的终端，在那里我可以运行正则表达式模式以确保它们是正确的。

现在我需要根据服务器上的一些 mysql table 检查日志中的一些条目。我已经设置了一个类似的方法，使用 List 对 return mysql table:

中的条目执行一系列命令

List<String> cmd = Arrays.asList("ssh user@domain mysql -u user -ppassword -h ipaddress", "use database", "SELECT column1, column2, etc FROM database");
    Process dumpcapProcess = Runtime.getRuntime().exec(cmd.toArray(new String[]{}));

    String line;
    // Reading the InputStream stream 
    BufferedReader reader = new BufferedReader(new InputStreamReader(dumpcapProcess.getInputStream()));
    while ((line = reader.readLine()) != null) {
        System.out.println(line);

    }

    // Reading the error stream for debug
    reader = new BufferedReader(new InputStreamReader(dumpcapProcess.getErrorStream()));
    while ((line = reader.readLine()) != null) {
        System.out.println(line);

但是没用。我玩弄了 exec 字符串的语法，看起来像这样：

List<String> cmd = Arrays.asList("ssh", "user@domain", "mysql", "-u",  "user", "-ppassword", "-h", "ipAddress", "use databases", "SELECT columns FROM database");

现在我收到这个错误：

Usage: mysql [OPTIONS] [database] -?, --help Display this help and exit. -I, --help Synonym for -? --auto-rehash Enable automatic rehashing. One doesn't need to use 'rehash' to get table and field completion, but startup and reconnecting may take a longer time. Disable with --disable-auto-rehash. (Defaults to on; use --skip-auto-rehash to disable.) -A, --no-auto-rehash No automatic rehashing. One has to use 'rehash' to get table and field completion. This gives a quicker start of mysql and disables rehashing on reconnect. --auto-vertical-output Automatically switch to vertical output mode if the result is wider than the terminal width. -B, --batch Don't use history file. Disable interactive behavior. (Enables --silent.) --bind-address=name IP address to bind to. --character-sets-dir=name Directory for character set files. --column-type-info Display column type information. -c, --comments Preserve comments. Send comments to the server. The default is --skip-comments (discard comments), enable with --comments.

如何运行 mysql 命令将 return 结果发送到我的 eclipse 终端？

Answer 1

您可以使用 -e 参数直接从命令行传递查询。示例：

 mysql -uuser -ppass -hhost -Ddatabase -e'show tables'

这是未经测试的，但它应该是这样的：

List<String> cmd = Arrays.asList(
    "ssh",
    "user@domain",
    "mysql",
    "-uuser",
    "-ppassword",
    "-h10.0.0.1",
    "-Ddb",
    "-e'SELECT columns FROM table'"
);

Answer 2

我认为你的问题是 -p 和密码之间没有 space。你应该尝试像这样构建你的命令：

mysql --user=user_name --password=your_password db_name

有关更多信息，请参阅文档： http://dev.mysql.com/doc/refman/5.6/en/mysql.html

运行 mysql 通过 ssh 命令

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