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[cdc_rsync] [cdc_stream] Remove SSH port argument (#41)

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This CL removes the port arguments for both tools.

The port argument can also be specified via the ssh-command and
scp-command flags. In fact, if a port is specified by both port flags
and ssh/scp commands, they interfere with each other. For ssh, the one
specified in ssh-command wins. For scp, the one specified in
scp-command wins. To fix this, one would have to parse scp-command and
remove the port arg there. Or we could just remove the ssh-port arg.
This is what this CL does. Note that if you need a custom port, it's
very likely that you also have to define custom ssh and scp commands.
This commit is contained in:
Lutz Justen
2022-12-12 10:58:33 +01:00
committed by GitHub
parent f0ef34db2f
commit f8438aec66
21 changed files with 89 additions and 191 deletions
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32
README.md
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@@ -167,14 +167,34 @@ scp somefile.txt user@linux.device.com:
Here, `user` is the Linux user and `linux.device.com` is the Linux host to
SSH into or copy the file to.
If `ssh.exe` or `scp.exe` cannot be found, or if additional arguments are
required, it is recommended to set the environment variables `CDC_SSH_COMMAND`
and `CDC_SCP_COMMAND`. The following example specifies a custom path to the SSH
and SCP binaries, a custom SSH config file, a key file and a known hosts file:
If additional arguments are required, it is recommended to provide an SSH config
file. By default, both `ssh.exe` and `scp.exe` use the file at
`%USERPROFILE%\.ssh\config` on Windows, if it exists. A possible config file
that sets a username, a port, an identity file and a known host file could look
as follows:
```
set CDC_SSH_COMMAND="C:\path with space\to\ssh.exe" -F C:\path\to\ssh_config -i C:\path\to\id_rsa -oStrictHostKeyChecking=yes -oUserKnownHostsFile="""C:\path\to\known_hosts"""
set CDC_SCP_COMMAND="C:\path with space\to\scp.exe" -F C:\path\to\ssh_config -i C:\path\to\id_rsa -oStrictHostKeyChecking=yes -oUserKnownHostsFile="""C:\path\to\known_hosts"""
Host linux_device
HostName linux.device.com
User user
Port 12345
IdentityFile C:\path\to\id_rsa
UserKnownHostsFile C:\path\to\known_hosts
```
If `ssh.exe` or `scp.exe` cannot be found, you can specify the full paths via
the command line arguments `--ssh-command` and `--scp-command` for `cdc_rsync`
and `cdc_stream start` (see below), or set the environment variables
`CDC_SSH_COMMAND` and `CDC_SCP_COMMAND`, e.g.
```
set CDC_SSH_COMMAND="C:\path with space\to\ssh.exe"
set CDC_SCP_COMMAND="C:\path with space\to\scp.exe"
```
Note that you can also specify SSH configuration via the environment variables
instead of using a config file:
```
set CDC_SSH_COMMAND=C:\path\to\ssh.exe -p 12345 -i C:\path\to\id_rsa -oUserKnownHostsFile=C:\path\to\known_hosts
set CDC_SCP_COMMAND=C:\path\to\scp.exe -P 12345 -i C:\path\to\id_rsa -oUserKnownHostsFile=C:\path\to\known_hosts
```
Note the small `-p` for `ssh.exe` and the capital `-P` for `scp.exe`.
#### Google Specific