I am tying to connect to sftp server via testapp using curl_7.74 and libssh2_1.8.2. this working in ubuntu 16.04 desktop but not on my embedded environment.
following error is thrown
root#phyboard-segin-imx6ul-2:~# ./sftptest
st.st_size:[0]
Trying 115.249.3.130:2222...
Connected to sftp-xxxxxxxx.mydomain.net (xxx.249.3.130) port 2222 (#0)
Failure establishing ssh session: -43, Failed getting banner
Closing connection 0
curl told us 2
somebody pls throw some light on it :)
Related
I am using ubuntu 20.04
I have got error while running jupyter notebook:
ERROR
The requested URL could not be retrieved
The following error was encountered while trying to retrieve the URL: http://localhost:8888/tree?
Connection to 127.0.0.1 failed.
The system returned: (111) Connection refused
The remote host or network may be down. Please try the request again.
I have the following scenario:
server: Ubuntu 20.04.3 LTS
openstack installed with devstack
watcher 2.2.0
Every services seem to be working and i can see the watcher dashboard on localhost.
But I think I have an auth problem between watcher and keystone :
Error contacting Watcher server: Unable to establish connection
to http://x.x.x.x:9322/v1/services: HTTPConnectionPool(host='x.x.x.x', port=9322):
Max retries exceeded with url: /v1/services (Caused by NewConnectionError('<urllib3.connection.
HTTP Connection object at 0x7fba33b1be50>: Failed to establish a new connection: [Errno 111] Connexion refusée')).
Attempt 6 of 6
I'm testing something on a VM, I put the same IP and the same password everywhere
Where should I look first ?
I make a server and request successfully in windows,then I put them to the linux which is the develop machine of company.
And I Got Connect Failed error when I run the clien.py. I have changed the host IP to localhost,0.0.0.0,127.0.0.1 and the IP of develop machine,but it doesn't work.
And I tried the docker inspect command,but the IPAddress is empty like "".
And I changed the port to 8500,8501,4321 and still got the error.
I tried make proxy to the company,the request returns a Name resolution failure error.So I think maybe the cause is the net of company?
Any answer would be very appreciate!
The Error Message:
grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with:
status = StatusCode.UNAVAILABLE
details = "Connect Failed"
debug_error_string = "{"created":"#1551677753.381330483","description":"Failed to create subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":2721,"referenced_errors":[{"created":"#1551677753.381328206","description":"Pick Cancelled","file":"src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc","file_line":241,"referenced_errors":[{"created":"#1551677753.381303114","description":"Connect Failed","file":"src/core/ext/filters/client_channel/subchannel.cc","file_line":689,"grpc_status":14,"referenced_errors":[{"created":"#1551677753.381278484","description":"Failed to connect to remote host: OS Error","errno":111,"file":"src/core/lib/iomgr/tcp_client_posix.cc","file_line":205,"os_error":"Connection refused","syscall":"connect","target_address":"ipv4:0.0.0.0:8501"}]}]}]}"
I am having k8s cluster on centos7.2 with 1 master and 2 slaves. The cluster is working fine as far as it is serving on port 8080 but when I tries to secure Kube-API server by using certificates, I felt into the above error after restarting the kube-apiserver service and it is continuously writing this error in my log file at /var/log/messages.
kube-apiserver is started as-
KUBE_API_ADDRESS="--bind-address=0.0.0.0"
KUBE_API_PORT="--secure-port=6443"
KUBELET_PORT="--kubelet-port=10250"
KUBE_ETCD_SERVERS="--etcd-servers=http://kube-master:2379"
KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"
KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota"
KUBE_ALLOW_PRIV="--allow-privileged=true"
KUBE_API_TLS_CERT_FILE="--tls-cert-file=/home/abc/server.cert"
KUBE_API_TLS_PRIVATE_KEY_FILE="--tls-private-key- file=/home/abc/server.key"
KUBE_API_TOKEN_AUTH_FILE="--token-auth-file=/home/abc/token.csv" </br>
I am accessing API server using kubectl command as
kubectl --v=4 --server="https://$ip:6443" --certificate-authority="./ca.crt" --token="abcdTOKEN1234" get nodes
After that I am getting following error-
2930 helpers.go:153] Connection error: Get https://$ip:6443/api: x509: certificate signed by unknown authority
2930 helpers.go:96] Unable to connect to the server: x509: certificate signed by unknown authority
I performed same steps on ubuntu 14.04 and are working fine. I am not able to figure out where exactly I'm missing. Can anyone knows where I am wrong ? Thanks in advance.
I have two virtual boxes with windows 7. Their IPs are 10.0.0.20 and 10.0.0.22. From one virtual box I can ping the other one.
On both boxes I open an smpd connection:
smpd -p 8677
On both box I can see that port 8677 is listening. From one box, using telnet, I am able to connect the other one on port 8677. I also disabled the firewall and I don't have any antivirus.
Then I try to launch my application on 10.0.0.20:
mpiexec /port 8677 /gmachinefile host.txt myapp.exe
It works when host.txt is filled with
10.0.0.20
or
10.0.0.22
But when host.txt is composed of the two lines:
10.0.0.20
10.0.0.22
I get this error:
[01:1952] ERROR: unable to read the cmd header on the pmi server context, Other MPI error, error stack:
[01:1952] ERROR: connection to the pmi client broken, closing.
[01:1952] ERROR: unable to read the cmd header on the pmi server context, Other MPI error, error stack:
[01:1952] ERROR: connection to the pmi client broken, closing.
All the commands were launched with administrator privileges.