Hi there,

I tried to build this on OS X 10.10.3 and everything went well. But now when I try to connect to a remote server, I always get:

rtop: asn1: structure error: length too large

What is going wrong here?

Regards, Fabio

Below is what I got, I think it is different from #4

rtop: asn1: structure error: tags don't match (16 vs {class:0 tag:0 length:28 isCompound:false}) {optional:false explicit:false application:false defaultValue:<nil> tag:<nil> stringType:0 set:false omitEmpty:false} pkcs1PrivateKey @2

Background info

Commit hash: ed16e84975ef509a788c04368df198b35791506a uname: Linux foobar 4.0.1-1-ARCH #1 SMP PREEMPT Wed Apr 29 12:00:26 CEST 2015 x86_64 GNU/Linux openssh: 6.8p1 openssl: 1.0.2a

Currently, there's no way to use your ~/.ssh/config as a host. It'll just say that no such host is resolvable. It would be cool if that would also work.

Built as "git clone --recursive http://github.com/rapidloop/rtop; make". Calling "rtop [ipaddress]" returns only error "rtop: asn1: structure error: length too large" and terminates.

When reading from .ssh/config go is unable to read keys like: ~/.ssh/id_rsa. This code expands the path names to /home/my_user/.ssh/id_rsa.

That way go is able to work with the path name :).

rtop: asn1: structure error: tags don't match (16 vs {class:0 tag:3 length:120 isCompound:true}) {optional:false explicit:false application:false defaultValue:<nil> tag:<nil> stringType:0 set:false omitEmpty:false} pkcs1PrivateKey @

Steps to reproduce:

$ go get github.com/rapidloop/rtop

Expected results:

• rtop is installed

Actual results:

$ go get github.com/rapidloop/rtop
package github.com/rapidloop/rtop
    imports github.com/rapidloop/rtop
    imports github.com/rapidloop/rtop: no buildable Go source files in ~/go/src/github.com/rapidloop/rtop

See also Organizing Go code. Reorganizing the repo would enable go get, permit removal of the Makefile, and permit removal of the SSH-related submodule.

I'm not sure if this is a feature request or bug - rtop does not list partitions that use LVM.

It lists the boot partition, since this is not using LVM. However my root filesystem is on a LVM partition and this is not listed/monitored in the Filesystem section of the report.

I got this problem when i run this code on my macOS 10.12.3, but i have fixed it by editing the file of sshhelper.go

about line 214:

config := &ssh.ClientConfig{
	User: user,
	Auth: auths,
	HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
            return nil
        },
}

As i understand it, RTOP is a pull based model where a central server ssh's in on some schedule and runs and grabs data. But i am thinking about adapting the model. Dont kil me, but just discussing.... It should be pretty easy to make it just a config setting perhaps..

1. Run a Scheduler in golang. Easy. Set by config
2. Runs the standard stats collector
3. Pushes the data up to the standard endpoint.

The reason for this Question 7 Issue, is because i have devices out in the field, with the IP address dynamic. Its IOT style world :)

dont want to break all the other bits to this - for example the central server can be make to work with both push and pull model.

Would be curious of your thoughts. DO you support this ? DO you want to kill me for suggesting this ? etc

According to the command line error, the correct syntax is now go install github.com/rapidloop/rtop@latest. Once I adjusted for this, it allowed me to download it direct from the repo.

Go Version

(base) vibhu@pop-os:~/Downloads/software$ go version
go version go1.17.5 linux/amd64

Installation Verification:

(base) vibhu@pop-os:~/Downloads/software$ go install github.com/rapidloop/rtop@latest
go: finding module for package golang.org/x/crypto/ssh/terminal
go: finding module for package golang.org/x/crypto/ssh
go: finding module for package golang.org/x/crypto/ssh/agent
go: found golang.org/x/crypto/ssh in golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3
go: found golang.org/x/crypto/ssh/agent in golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3
go: found golang.org/x/crypto/ssh/terminal in golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3

Post install the user local go bin:

(base) vibhu@pop-os:~/Downloads/software$ ls -alt /usr/local/go/bin
total 16940
drwxr-xr-x  2 vibhu vibhu     4096 Dec  9 08:53 .
-rwxr-xr-x  1 vibhu vibhu 14015892 Dec  9 08:53 go
-rwxr-xr-x  1 vibhu vibhu  3319301 Dec  9 08:53 gofmt
drwxr-xr-x 10 vibhu vibhu     4096 Dec  9 08:50 ..

Expected Behaviour: As per documentation, find the bin for rtop in the user/local/go/bin.

In my local ~/.ssh/config:

Host *
    ControlMaster auto
    ControlPath /tmp/ssh-%r@%h:%p.socket
    ControlPersist yes
    ServerAliveCountMax 2
    ServerAliveInterval 120

I enabled ssh multiplexing for any connection, but rtop seems not to be using the ControlPath.

Is it possible for rtop to use the ControlPath opened by ssh?

Unfortunately, this otherwise nice program doesn't support encrypted keys, there is no way to supply the passphrase:

Example:

$ rtop <server>
rtop: ssh: cannot decode encrypted private keys
rtop: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none], no supported methods remain

In this case, has a proper entry in ~/.ssh/config, an ssh-agent is running and the encrypted is loaded.

Every exported function in a program should have a doc comment. The first sentence should be a summary that starts with the name being declared. From effective go.

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