netns | Simple network namespace handling for go | Continuous Deployment library

 by   vishvananda Go Version: v0.0.4 License: Apache-2.0

kandi X-RAY | netns Summary

kandi X-RAY | netns Summary

netns is a Go library typically used in Devops, Continuous Deployment applications. netns has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

The netns package provides an ultra-simple interface for handling network namespaces in go. Changing namespaces requires elevated privileges, so in most cases this code needs to be run as root.
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            kandi-support Support

              netns has a low active ecosystem.
              It has 301 star(s) with 131 fork(s). There are 10 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 5 open issues and 9 have been closed. On average issues are closed in 796 days. There are 2 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of netns is v0.0.4

            kandi-Quality Quality

              netns has 0 bugs and 0 code smells.

            kandi-Security Security

              netns has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              netns code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              netns is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              netns releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.
              It has 340 lines of code, 31 functions and 4 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            netns Key Features

            No Key Features are available at this moment for netns.

            netns Examples and Code Snippets

            No Code Snippets are available at this moment for netns.

            Community Discussions

            QUESTION

            Kolla Ansilble: Openstack Instances Unable to access Internet or eachother
            Asked 2022-Apr-11 at 07:50

            I am a newbie to openstack (deployed using kolla-ansible) and have created two instances both are ubuntu 20.04 VMs. I am able to ping and ssh them from the host machine (192.168.211.133) and vice versa. However instances are unable to access internet. The virtual router is also unable to access internet:

            Configuration of one of the machine is below;

            ...

            ANSWER

            Answered 2022-Apr-11 at 07:50

            I was able to resolve the issue by pinpointing that the gateway used by the virtual router (192.168.211.1) was different form the one used by my host VM (192.168.211.2).

            Source https://stackoverflow.com/questions/71778665

            QUESTION

            ASP dotnet core web app container running but not opening in browser. using .net 6.0
            Asked 2022-Mar-15 at 02:28

            ASP dotnet core web app container running but not opening in browser. using .net 6.0

            i tried http://localhot container port. please let me know where i am doing mistake.

            Below i am sharing my Dockerfile and docker inpect result.

            ...

            ANSWER

            Answered 2022-Mar-15 at 02:28

            I presume docker command "docker run --rm -it -p 80:80 image ID"

            Map port 80 on the local machine to port 80 in the container.

            Please in the Internet browser key http://localhost: you build port 80 (EXPOSE 80)

            if is in dockerfile add ENV ASPNETCORE_URLS=http://+:80

            Please in the Internet browser key http://0.0.0.0:80/

            Reference:https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/docker/building-net-docker-images?view=aspnetcore-6.0

            Source https://stackoverflow.com/questions/71452171

            QUESTION

            DPDK l3fwd-acl application is unable to send or receive using net_tap PMD using namespaces
            Asked 2022-Mar-10 at 02:09

            I compiled dpdk 19.11.11 version to test l3fwd-acl. After starting it in a VirtualBox instance with 2 CPUs and 2 ports I have used 2 TAP interfaces to simulate 2 network interfaces for putting traffic over one and getting that back over another. I have used the following command (and get the following output):

            ...

            ANSWER

            Answered 2022-Mar-09 at 07:45

            L3fwd-acl works with IP packets only, for all non IP packets it drops. Hence with TAP PMD I had to follow the changes as

            1. Disable any NIC PCIe device using --no-pci
            2. Use new commands as sudo ./build/l3fwd-acl --file-prefix=mytest -l 2-4 --vdev=net_tap0 --vdev=net_tap1 --no-pci -- -P -p 3 --config="(0,0,4),(1,0,3)" --rule_ipv4=ipv4-sample.db --rule-ipv6=ipv6-sample.db --eth-dest=0, --eth-dest=1,
            3. edit ip-sample.db file with the entries to be assigned for dtap0 and dtap1.
            4. refer section 24.1.3 to identify the format and for default drop rule
            5. start the application and use the following netns commands.

            Source https://stackoverflow.com/questions/71345975

            QUESTION

            How do `ip netns` and `unshare` save their persistent network namespaces? Can they use each others?
            Asked 2021-Nov-18 at 05:37

            To make a persistent namespace with unshare you use the syntax:

            ...

            ANSWER

            Answered 2021-Nov-18 at 05:37

            Both unshare --net=/somefile and ip netns add somename create a new network namespace and bind-mount it to somewhere. The only difference is that unshare bind-mounts it to whatever file you specify, and ip bind-mounts it to a new file in /var/run/netns/. In other words, if you used /var/run/netns/mynetns1 in place of /root/mynetns1, then you could later interact with it with ip.

            Source https://stackoverflow.com/questions/70010945

            QUESTION

            How to seldon-core quick-start on kind with port-forward?
            Asked 2021-Oct-13 at 10:50

            Following the documentation I try to setup the Seldon-Core quick-start https://docs.seldon.io/projects/seldon-core/en/v1.11.1/workflow/github-readme.html

            I don't have LoadBalancer so I would like to use port-fowarding for accessing to the service.

            I run the following script for setup the system:

            ...

            ANSWER

            Answered 2021-Oct-13 at 10:50

            If you install with istio enabled you also need to install the istio gateway.

            I've tested your flow and it didn't work, and then did work after installing the following istio gateway.

            Source https://stackoverflow.com/questions/69538672

            QUESTION

            Kubectl port-forwarding not working for IPv6 binding with socat
            Asked 2021-Sep-22 at 00:03

            I'm trying to understand why this particular socat command isn't working in my case where I run it in a IPv6 only Kubernetes cluster.

            Cluster is build on top of AWS with Calico CNI & containerd. Provisioned using kubeadm and Kubernetes 1.21.

            I have run the following socat command which binds to loopback interface ::1,

            ...

            ANSWER

            Answered 2021-Sep-22 at 00:03

            For those of you running into a similar issue with your IPv6 only Kubernetes clusters heres what I have investigated found so far.

            Background: It seems that this is a generic issue relating to IPv6 and CRI. I was running containerd in my setup and containerd versions 1.5.0-1.5.2 added two PRs (don't use socat for port forwarding and use happy-eyeballs for port-forwarding) which fixed a number of issues in IPv6 port-forwarding.

            Potential fix: Further to pulling in containerd version 1.5.2 (as part of Ubuntu 20.04 LTS) I was also getting the error IPv4: dial tcp4 127.0.0.1:15021: connect: connection refused IPv6 dial tcp6: address localhost: no suitable address found when port-forwarding. This is caused by a DNS issue when resolving localhost. Hence I added localhost to resolve as ::1 in the host machine with the following command.

            Source https://stackoverflow.com/questions/68979336

            QUESTION

            Error response from daemon: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "python":
            Asked 2021-Sep-19 at 18:03

            I keep getting this error in a Docker container when I execute docker run.

            Dockerfile

            ...

            ANSWER

            Answered 2021-Sep-19 at 02:11

            It looks like the bind mount was the issue. I was mounting to /bin/usr, which was somehow causing the error.

            Source https://stackoverflow.com/questions/69239628

            QUESTION

            Why am I receiving packer bigger than with raw packet
            Asked 2021-Aug-23 at 08:52

            I am trying to transfers a packet from an interface to another by using raw packets (just for playing). First I focused on received packets.

            On my machine (archlinux, that has 192.168.30.3 as IP) I created this code:

            ...

            ANSWER

            Answered 2021-Aug-23 at 08:52

            Since the observed total packet length is way greater than that of a typical jumbo frame (MTU 9k), it's apparent that the receiver side employs either Large Receive Offload (LRO) or Generic Receive Offload (GRO) thus reassembling smaller packets into larger ones on the network interface driver level. This might explain why the packet socket in question sees already reassembled (large) packets.

            In this specific case, ethtool -k output indicates clearly that LRO is always disabled whilst GRO is indeed active and can be adjusted. As per the discussion in comments, disabling GRO indeed bears fruit.

            Source https://stackoverflow.com/questions/68883831

            QUESTION

            node and docker image error in meteor build
            Asked 2021-Aug-16 at 19:28

            I am running the Github Action to build and deploy a meteor Application to the AWS EC2 instance.

            I am using the following code in the .yaml file to do the mup deploy

            ...

            ANSWER

            Answered 2021-Aug-16 at 19:28

            The image depends on what version meteor you use.

            Check this table: http://meteor-up.com/docs.html#meteor-support

            I'm using the zodern/meteor:root with meteor 2.2.1

            Source https://stackoverflow.com/questions/68807586

            QUESTION

            Docker swarm giving out weird error from log
            Asked 2021-May-17 at 02:30

            When I join another host machine as a worker to my swarm the log gives me this error

            ...

            ANSWER

            Answered 2021-May-17 at 02:30

            Well this error could just a random error in my VM for no reason so this could be ignored

            Source https://stackoverflow.com/questions/67415782

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install netns

            You can use go get command:.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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