kandi X-RAY | confd Summary
kandi X-RAY | confd Summary
confd is a lightweight configuration management tool focused on:.
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I want to establish a remote shell over tcp.
I already got it to work, but there's a small issue: The prompt does not shows up on client side.
If my client input
echo hi, it well prints
hi on stdout (client side), and the shell process remains open until he hits
ctrl-D or chooses to exit whatever way.
After some basic investigation, I figured out that bash prints its prompt on stderr (e.g.
bash 2>/dev/null will not show any prompt on any terminal).
This may be a hint but before I call
execve in the shell process, I do my redirections from my server to my client connection fd this way:
ANSWERAnswered 2021-Dec-05 at 10:35
An interactive shell is one started without non-option arguments (unless -s is specified) and without the -c option whose standard input and error are both connected to terminals (as determined by isatty(3)), or one started with the -i option.
A non-interactive shell normally won't print the prompt at all.
I deployed a brand new k8s cluster using kubespray, everything works fine but all of the calico related pods are not ready. And after many hours of debugging I couldn't find the reason why calico pods are crashing. I even disabled/stopped the entire firewalld service but nothing changed.
One other important thing is that
calicoctl node status output is not stable and every time gets called show something different:
ANSWERAnswered 2021-Sep-21 at 18:18
timeoutSeconds for both
readinessProbe from 1 to 60 fixes the issue.
Explanation of what I am trying to do:
I have 2 servers on the ip 192.168.1.10 (docker reverse proxy) and 192.168.1.20 (other services). I want 10 to redirect requests to 20 (many of these requests are with SSL).
Example:user request answer back return example_internal.host.com → 192.168.1.10 → https://example_internal.host.com example_external.host.com → 192.168.1.20 → https://example_external.host.com
ANSWERAnswered 2021-Jul-04 at 22:56
the nginx config there is reverse proxying to itself on port 80. If you want to reverse proxy to one of the other containers change lacalhost to whatever service name you gave the container. eg
If that does not work, try ammending your config to being something along the lines of:
I am currently trying to create a regex that is able to parse the following lines of logs:...
ANSWERAnswered 2021-Jun-30 at 17:13
In this pattern
.* at the end will match the rest of the line
In this pattern
\[[^\[\|]*\|[^\]]*\](.*?)(?=\[[^\[\|]*\|[^\]]*\]) you match the beginning of the log with the square brackets and then capture as least as possible characters until the positive lookahead assertion at the end is true.
If the assertion is not true, the
.*? non greedy part will suffice with matching 0 chars.
What you could do is add an alternation
| which states matches as least as possible chars until you either encounter another log start, or the end of the string.
Let me preface this by saying this is running on a production cluster, so any 'destructive' solution that will cause downtime will not be an option (unless absolutely necessary).
I have a Kubernetes cluster (11 nodes, 3 of which are master nodes) running v1.13.1 on AWS. This cluster was created via kOps like so:...
ANSWERAnswered 2021-Jan-08 at 21:43
I have solved this by updating all the masters at the same time, without validation
Below is the manifest file i used to enable calico CNI for k8s, pods are able to communicate over ipv4 but i am unable to reach outside using ipv6, k8s version v1.14 and calico version v3.11, am i missing some settings,
forwarding is enabled on host with "sysctl -w net.ipv6.conf.all.forwarding=1"...
ANSWERAnswered 2020-Sep-08 at 10:45
I communicated on slack channel of calico, and got info that i need to do config for dual stack for k8s and for calico
We recently performed a DNS Flip on a Rails application integration environment. We've set example-1.com as a CNAME pointing at A record example-2.com. The service at example-2.com is a Ruby on Rails application with Apache and Passenger Phusion. On top of Apache we are using OpenId-Connect (specifically the mod_auth_openidc module).
When we try to access example-1.com directly, everything works fine. But when we try to do so through example-2.com, we get the following error:...
ANSWERAnswered 2020-Aug-29 at 18:50
you can use a relative value for the
Can we determine if it is a configuration or operational data model from the pyang model in confD, If I do not have permission to read the actual yang file Eg:...
ANSWERAnswered 2020-Jun-08 at 07:35
As mentioned in FAQ A data-model defines the configuration (R-W) data, operational (R-O) data, and administrative actions that are accessible for a management system and maintained by the device.
From Pyang file, rw indicates configuration data while ro indicate read/operational data
shakes = open("output.txt", "r")
for line in shakes:
if re.match(r'.*(\w*Daemon\w*).*', line):
ANSWERAnswered 2020-Mar-01 at 20:44
You can do for example:
I am trying to receive a file thats uploaded by the client and in the same socket descriptor send a command download a file from the server in chunks
The issue is if the socket descriptors are in different files things work flawlessly but if its the same file client and server programs are hanging up
The second problem is even if its in different files I could not send the client a message saying that the file is received
Can anyone please advice
PS- to run the program might need to create a file named fileclient.txt and enter some random text
ANSWERAnswered 2020-Feb-05 at 15:45
You seem to expect that the string "DOWN" is recognized by the server and a download is triggered. This is very unlikely to happen.
TCP connections do not take care about granularity of data that is put into the socket. If you put in 1000 bytes at once on one side, it is not guaranteed that those 1000 bytes are received in one go. You may receive either 1000 bytes or 500 + 500 bytes of 999 + 1 bytes.
Same applies if you send with multiple requests. Putting in 1000+4 bytes could result in receiving 1000+4 or 1004 or 500+500+4 bytes or any other combination.
This means that you cannot simply rely on receiving all bytes for the file upload first and then wait for another command ("DOWN") or another file. It is very likely that you will receive the "DOWN" together with the last bytes of the uploaded file and simply store them into the output file.
The same applies for download direction. The client would not be able to distinguish a file download from an "upload done" notification.
To solve your problem you need to introduce more logic into your protocol. There are various options:
- Use 1 socket and 1 connection for each operation or each direction. No need to mix everything into a single socket.
- Add some indication about file upload, e.g. total length to be expected in front of your upload.
- Use 1 socket for control flow and multiple others for data transfer (see FTP for details)
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