I'm trying to run microservices locally (single-node machine). And I'm getting this strange error:
Error: getaddrinfo EAI_AGAIN nats-service
at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:71:26) {
errno: -3001,
code: 'EAI_AGAIN',
syscall: 'getaddrinfo',
hostname: 'nats-service'
}
Below is the config:
apiVersion: v1
kind: Service
metadata:
name: nats-service
spec:
selector:
app: nats-server
ports:
- name: client
protocol: TCP
port: 4222
targetPort: 4222
- name: monitoring
protocol: TCP
port: 8222
targetPort: 8222
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nats-deployment
spec:
selector:
matchLabels:
app: nats-server
template:
metadata:
labels:
app: nats-server
spec:
containers:
- name: nats
image: nats-streaming:latest
args:
- '-p'
- '4222'
- '-m'
- '8222'
- '-hbi'
- '1m'
- '-hbt'
- '5s'
- '-hbf'
- '3'
- '-SD'
- '-cid'
- 'msrumon'
resources:
requests:
cpu: 100m
memory: 128Mi
limits:
cpu: 1000m
memory: 256Mi
My app is built on top of NestJS framework. And below is the main.ts file:
import { NestFactory } from '@nestjs/core';
import { MicroserviceOptions, Transport } from '@nestjs/microservices';
import { AppModule } from './app.module';
async function bootstrap() {
const app = await NestFactory.create(AppModule);
app.connectMicroservice<MicroserviceOptions>(
{
transport: Transport.NATS,
options: {
servers: 'nats://nats-service:4222',
queue: 'app',
},
},
{ inheritAppConfig: true },
);
await app.startAllMicroservices();
await app.listen(3000);
}
bootstrap();
All the configs are at default namespace. Please help me on what I'm doing wrong. This is the project I'm practicing on right now.
Edit: Answering first comment:
Cluster setup was pretty much straight-forward. I just installed Docker Desktop via Chocolatey package manager and enabled Kubernetes. Below is the version outputs (as of Oct 12th 2021):
$ docker version
Client:
Version: 19.03.12
API version: 1.40
Go version: go1.13.12
Git commit: 0ed913b8-
Built: 07/28/2020 16:36:03
OS/Arch: windows/amd64
Experimental: false
error during connect: Get http://%2F%2F.%2Fpipe%2FdockerDesktopLinuxEngine/v1.40/version: open //./pipe/dockerDesktopLinuxEngine: The system cannot find the file specified.
$ kubectl version
Client Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.2", GitCommit:"8b5a19147530eaac9476b0ab82980b4088bbc1b2", GitTreeState:"clean", BuildDate:"2021-09-15T21:38:50Z", GoVersion:"go1.16.8", Compiler:"gc", Platform:"windows/amd64"}
Server Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.4", GitCommit:"3cce4a82b44f032d0cd1a1790e6d2f5a55d20aae", GitTreeState:"clean", BuildDate:"2021-08-11T18:10:22Z", GoVersion:"go1.16.7", Compiler:"gc", Platform:"linux/amd64"}
$ kubectl describe nodes
Name: docker-desktop
Roles: control-plane,master
Labels: beta.kubernetes.io/arch=amd64
beta.kubernetes.io/os=linux
kubernetes.io/arch=amd64
kubernetes.io/hostname=docker-desktop
kubernetes.io/os=linux
node-role.kubernetes.io/control-plane=
node-role.kubernetes.io/master=
node.kubernetes.io/exclude-from-external-load-balancers=
Annotations: kubeadm.alpha.kubernetes.io/cri-socket: /var/run/dockershim.sock
node.alpha.kubernetes.io/ttl: 0
volumes.kubernetes.io/controller-managed-attach-detach: true
CreationTimestamp: Thu, 02 Sep 2021 15:48:31 +0600
Taints: <none>
Unschedulable: false
Lease:
HolderIdentity: docker-desktop
AcquireTime: <unset>
RenewTime: Tue, 12 Oct 2021 20:10:17 +0600
Conditions:
Type Status LastHeartbeatTime LastTransitionTime Reason Message
---- ------ ----------------- ------------------ ------ -------
MemoryPressure False Tue, 12 Oct 2021 20:10:16 +0600 Mon, 27 Sep 2021 01:41:23 +0600 KubeletHasSufficientMemory kubelet has sufficient memory available
DiskPressure False Tue, 12 Oct 2021 20:10:16 +0600 Mon, 27 Sep 2021 01:41:23 +0600 KubeletHasNoDiskPressure kubelet has no disk pressure
PIDPressure False Tue, 12 Oct 2021 20:10:16 +0600 Mon, 27 Sep 2021 01:41:23 +0600 KubeletHasSufficientPID kubelet has sufficient PID available
Ready True Tue, 12 Oct 2021 20:10:16 +0600 Wed, 29 Sep 2021 17:57:45 +0600 KubeletReady kubelet is posting ready status
Addresses:
InternalIP: 192.168.65.4
Hostname: docker-desktop
Capacity:
cpu: 16
ephemeral-storage: 263174212Ki
hugepages-1Gi: 0
hugepages-2Mi: 0
memory: 13032308Ki
pods: 110
Allocatable:
cpu: 16
ephemeral-storage: 242541353378
hugepages-1Gi: 0
hugepages-2Mi: 0
memory: 12929908Ki
pods: 110
System Info:
Machine ID: 1dd2a319-0b08-4b0a-8e40-eac07615fe06
System UUID: 1dd2a319-0b08-4b0a-8e40-eac07615fe06
Boot ID: 5f9b8734-d4dd-4120-beef-cc239cbbaa66
Kernel Version: 5.10.16.3-microsoft-standard-WSL2
OS Image: Docker Desktop
Operating System: linux
Architecture: amd64
Container Runtime Version: docker://20.10.8
Kubelet Version: v1.21.4
Kube-Proxy Version: v1.21.4
Non-terminated Pods: (10 in total)
Namespace Name CPU Requests CPU Limits Memory Requests Memory Limits Age
--------- ---- ------------ ---------- --------------- ------------- ---
ingress-nginx ingress-nginx-controller-748d8ff6c7-6fbsh 100m (0%) 0 (0%) 90Mi (0%) 0 (0%) 10d
kube-system coredns-558bd4d5db-2mhks 100m (0%) 0 (0%) 70Mi (0%) 170Mi (1%) 40d
kube-system coredns-558bd4d5db-k8pfc 100m (0%) 0 (0%) 70Mi (0%) 170Mi (1%) 40d
kube-system etcd-docker-desktop 100m (0%) 0 (0%) 100Mi (0%) 0 (0%) 40d
kube-system kube-apiserver-docker-desktop 250m (1%) 0 (0%) 0 (0%) 0 (0%) 40d
kube-system kube-controller-manager-docker-desktop 200m (1%) 0 (0%) 0 (0%) 0 (0%) 40d
kube-system kube-proxy-k42wv 0 (0%) 0 (0%) 0 (0%) 0 (0%) 40d
kube-system kube-scheduler-docker-desktop 100m (0%) 0 (0%) 0 (0%) 0 (0%) 40d
kube-system storage-provisioner 0 (0%) 0 (0%) 0 (0%) 0 (0%) 40d
kube-system vpnkit-controller 0 (0%) 0 (0%) 0 (0%) 0 (0%) 40d
Allocated resources:
(Total limits may be over 100 percent, i.e., overcommitted.)
Resource Requests Limits
-------- -------- ------
cpu 950m (5%) 0 (0%)
memory 330Mi (2%) 340Mi (2%)
ephemeral-storage 0 (0%) 0 (0%)
hugepages-1Gi 0 (0%) 0 (0%)
hugepages-2Mi 0 (0%) 0 (0%)
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Starting 3h47m kubelet Starting kubelet.
Normal NodeAllocatableEnforced 3h47m kubelet Updated Node Allocatable limit across pods
Normal NodeHasSufficientPID 3h47m (x7 over 3h47m) kubelet Node docker-desktop status is now: NodeHasSufficientPID
Normal NodeHasSufficientMemory 3h47m (x8 over 3h47m) kubelet Node docker-desktop status is now: NodeHasSufficientMemory
Normal NodeHasNoDiskPressure 3h47m (x8 over 3h47m) kubelet Node docker-desktop status is now: NodeHasNoDiskPressure
Normal Starting 3h47m kube-proxy Starting kube-proxy.
Normal Starting 7m3s kubelet Starting kubelet.
Normal NodeAllocatableEnforced 7m3s kubelet Updated Node Allocatable limit across pods
Normal NodeHasSufficientMemory 6m59s (x8 over 7m3s) kubelet Node docker-desktop status is now: NodeHasSufficientMemory
Normal NodeHasNoDiskPressure 6m59s (x8 over 7m3s) kubelet Node docker-desktop status is now: NodeHasNoDiskPressure
Normal NodeHasSufficientPID 6m59s (x7 over 7m3s) kubelet Node docker-desktop status is now: NodeHasSufficientPID
Normal Starting 6m46s kube-proxy Starting kube-proxy.
