vxlan | vxlan implementation using Linux tap interface | Continuous Deployment library
kandi X-RAY | vxlan Summary
kandi X-RAY | vxlan Summary
Multicast Address and Interface are configured in /usr/local/etc/vxlan.conf . vxland can work with IPv4 and IPv6.
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QUESTION
I'm working on aws eks, and I'm having issues with networking because none of the pods can resolve hostnames.
Checking the kube-config pods, I found this:
...ANSWER
Answered 2022-Feb-09 at 05:15Amazon VPC CNI and Flannel cannot co-exist on EKS. Note Flannel is not on the suggested alternate compatible CNI. To get an idea what does it take to use Flannel on EKS checkout this excellent blog.
QUESTION
I deployed openstack via openstack-ansible and I'm trying to set up an openstack network so that the instances are accessible from the physical network (192.168.10.0/20):
...ANSWER
Answered 2021-Dec-22 at 13:53- 1, check whether the
network:dhcpport exist or not, it should exist and show that there is one or more ports which has theipat the head of the range withinstart=192.168.14.241,end=192.168.14.249. Like this:
QUESTION
I have deployed OpenStack and configured OVS-DPDK on compute nodes for high-performance networking. My workload is a general-purpose workload like running haproxy, mysql, apache, and XMPP etc.
When I did load-testing, I found performance is average and after 200kpps packet rate I noticed packet drops. I heard and read DPDK can handle millions of packets but in my case, it's not true. In guest, I am using virtio-net which processes packets in the kernel so I believe my bottleneck is my guest VM.
I don't have any guest-based DPDK application like testpmd etc. Does that mean OVS+DPDK isn't useful for my cloud? How do I take advantage of OVS+DPDK with a general-purpose workload?
We have our own loadtesting tool which generate Audio RTP traffic which is pure UDP based 150bytes packets and noticed after 200kpps audio quality go down and choppy. In short DPDK host hit high PMD cpu usage and loadtest showing bad audio quality. when i do same test with SRIOV based VM then performance is really really good.
...ANSWER
Answered 2021-Nov-24 at 04:50When I did load-testing, I found performance is average and after 200kpps packet rate I noticed packet drops. In short DPDK host hit high PMD cpu usage and loadtest showing bad audio quality. when i do same test with SRI
[Answer] this observation is not true based on the live debug done so far. The reason as stated below
- qemu launched were not pinned to specific cores.
- comparison done against PCIe pass-through (VF) against vhost-client is not apples to apples comparison.
- with OpenStack approach, there are at least 3 bridges before the packets to flow through before reaching VM.
- OVS threads were not pinned which led to all the PMD threads running on the same core (causing latency and drops) in each bridge stage.
To have a fair comparison against SRIOV approach, the following changes have been made with respect to similar question
QUESTION
I installed a Kubernetes cluster of three nodes, the control node looked ok, when I tried to join the other two nodes the status for both of is: Not Ready
On control node:
...ANSWER
Answered 2021-Jun-11 at 20:41After seeing whole log line entry
QUESTION
I'm final student who research and implement Openstack Victoria. When I configure Project: Octavia - Loadbalancer on multi-node - CentOS8, I have a issue. Seem like octavia.amphorae.drivers.haproxy.rest_api_driver couldn't connect to Amphora instance and port 9443 didn't run on my Network Node aka Octavia-API. In controller node, the amphora instance still running nornally. I follow https://www.server-world.info/en/note?os=CentOS_8&p=openstack_victoria4&f=11 to configure my lab. This is my cfg file below, pls help me to figure out. Regards!
I created lb_net in type vxlan and lb-secgroup, when i use command to create lb it still pending-create:
...ANSWER
Answered 2021-May-14 at 18:28Okay, my problem is fixed. The Octavia-api node can't connect to amphorae-instance because they do not match the same network type (node - LAN and amphorae - VXLAN). So, I create a bridge interface at a node to convert vxlan for lan can connect (You can read here at step 7: create a network).
Best regard!
QUESTION
I am all new to Kubernetes and currently setting up a Kubernetes Cluster inside of Azure VMs. I want to deploy Windows containers, but in order to achieve this I need to add Windows worker nodes. I already deployed a Kubeadm cluster with 3 master nodes and one Linux worker node and those nodes work perfectly.
Once I add the Windows node all things go downward. Firstly I use Flannel as my CNI plugin and prepare the deamonset and control plane according to the Kubernetes documentation: https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/adding-windows-nodes/
Then after the installation of the Flannel deamonset, I installed the proxy and Docker EE accordingly.
Used Software Master NodesOS: Ubuntu 18.04 LTS
Container Runtime: Docker 20.10.5
Kubernetes version: 1.21.0
Flannel-image version: 0.14.0
Kube-proxy version: 1.21.0
OS: Windows Server 2019 Datacenter Core
Container Runtime: Docker 20.10.4
Kubernetes version: 1.21.0
Flannel-image version: 0.13.0-nanoserver
Kube-proxy version: 1.21.0-nanoserver
I wanted to see a full cluster ready to use and with all the needed in the Running state.
After the installation I checked if the installation was successful:
...ANSWER
Answered 2021-May-07 at 12:21Are you still having this error? I managed to fix this by downgrading windows kube-proxy to at least 1.20.0. There must be some missing config or bug for 1.21.0.
QUESTION
I have a kubernetes service set to externalTrafficPolicy: Cluster (it's a simple nginx backend). When i try to curl it from outside the cluster it's often timing out. The loadBalancerSourceRanges are set to 0.0.0.0/0, and it actually succeeds very infrequently (2/20 times).
I am aware that in an externalTrafficPolicy:Cluster service, the nodes in the cluster use iptables to reach the pod. So i did some tcpdumps from both the pod and a node in the cluster that is attempting to reach the pod
Below is a tcpdump from a node that the backend pod tried to reach and send data to. (note I am using Calico for my cluster CNI plugin). 10.2.243.236 is the IP of the backend pod
...ANSWER
Answered 2021-Mar-25 at 22:13Answer: We installed Calico on the kubernetes cluster as the CNI plugin. We did not set the kube proxy's --cluster-cidr argument as we believed Calico would take care of creating the rules.
Upon running iptables-save on kubernetes nodes, it was found that no rule actually matched the pod cidr range, and hence packets were getting dropped by the default FORWARD DROP rule (this can be verified using iptables-save -c).
after setting kube-proxy's cluster-cidr argument, and restarting kube proxy on all the worker nodes, the IPtables rules were created as expected and services with externalTrafficPolicy: Cluster worked as expected.
QUESTION
I am trying to determine the amount of resources required to forward 20Mp/s using DPDK. I'm using two FM10420 100G Dual NIC adapters to generate and forward traffic. Since I have only one server for testing, I'm generating packets using pktgen on host computer and forward them with testpmd on a virtual machine. My setup looks like this,
However, when I run both testpmd and pktgen, I can see there is huge amount of packet drop. Following are the results captured after 60 seconds of generating and forwarding packets.
Pktgen,
...ANSWER
Answered 2020-Dec-16 at 14:06There are multiple factors which affect performance for NIC PMD. Some of them are listed below
- cpu core isolation to explicitly make user-space threads to sole user of CPU core time
- Kernel watchdog timer callback reduction
- disable Transparent Huge page (especially with 1GB)
- firmware of NIC
- DPDK version
- vector code for RX-TX
- PCIe lane (direct attach to CPU give higher performance than south bridge)
- CPU clock frequency
- DDIO ability of NIC
- Traffic pattern (with RSS on RX-queue or FLow DIrector)
- Resoruce Director for preventing cache posioning.
I highly recommend @Anuradha to check FM10K PMD capacity, BIOS, and using smap_affinity, isol_cpu, rcu_callback etc.
Note: I have been able to achieve 29 Mpps (64B) packets using single core and DPDK example skeleton with X710 NIC.
QUESTION
I'm trying to deploy OpenStack Ansible. When running the first playbook openstack-ansible setup-hosts.yml, there are errors for all containers during the task [openstack_hosts : Remove the blacklisted packages] (see below) and the playbook fails.
ANSWER
Answered 2020-Oct-07 at 08:33I tried to backtrack from my configuration to the AIO but the same error kept showing up. Finally it disappeared after rebooting the servers so there didn't seem to be a problem with the configuration after all...
QUESTION
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"
...ANSWER
Answered 2020-Sep-08 at 10:45I communicated on slack channel of calico, and got info that i need to do config for dual stack for k8s and for calico
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