worker pod crashloopbackoff status

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Please provide the following information so we can assess the issue you’re having

Description

All pods are running normal except the worker pod. After digging into the logs there is an exception of type AggregateException "no such device or address.

Steps to reproduce the issue, if relevant: 1. 2. 3.

Describe the results you received: worker pod in crashloopbackoff

Describe the results you expected: worker pod will run

Additional information you deem important (e.g. issue happens only occasionally):

Output of docker version:

Client:
 Version:           18.09.6
 API version:       1.39
 Go version:        go1.10.8
 Git commit:        481bc77
 Built:             Sat May  4 02:35:57 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.6
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.8
  Git commit:       481bc77
  Built:            Sat May  4 01:59:36 2019
  OS/Arch:          linux/amd64
  Experimental:     false

Output of docker info:

Containers: 17
 Running: 16
 Paused: 0
 Stopped: 1
Images: 8
Server Version: 18.09.6
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: bb71b10fd8f58240ca47fbb579b9d1028eea7c84
runc version: 2b18fe1d885ee5083ef9f0838fee39b62d653e30
init version: fec3683
Security Options:
 apparmor
 seccomp
  Profile: default
Kernel Version: 4.15.0-50-generic
Operating System: Ubuntu 18.04.2 LTS
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.947GiB
Name: node1
ID: BZCL:OEV3:XFPE:CRZ3:ACL4:JE52:7RB4:IZYT:2G5S:BQVT:7QH7:AU27
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

WARNING: No swap limit support

Additional environment details (AWS, Docker for Mac, Docker for Windows, VirtualBox, physical, etc.):

environment: virtualbox vm ubuntu server v18.04

network card is configured as “network bridge adapter” all machines have an ip address in my own LAN.

output 'kubectl logs <pod-name>

System.AggregateException: One or more errors occurred. (No such device or address) ---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: No such device or address
   at System.Net.Dns.HostResolutionEndHelper(IAsyncResult asyncResult)
   at System.Net.Dns.EndGetHostAddresses(IAsyncResult asyncResult)
   at System.Net.Dns.<>c.<GetHostAddressesAsync>b__14_1(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at Npgsql.NpgsqlConnector.Connect(NpgsqlTimeout timeout)
   at Npgsql.NpgsqlConnector.RawOpen(NpgsqlTimeout timeout)
   at Npgsql.NpgsqlConnector.Open(NpgsqlTimeout timeout)
   at Npgsql.ConnectorPool.Allocate(NpgsqlConnection conn, NpgsqlTimeout timeout)
   at Npgsql.NpgsqlConnection.OpenInternal()
   at Worker.Program.OpenDbConnection(String connectionString) in /code/src/Worker/Program.cs:line 74
   at Worker.Program.Main(String[] args) in /code/src/Worker/Program.cs:line 19
---> (Inner Exception #0) System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: No such device or address
   at System.Net.Dns.HostResolutionEndHelper(IAsyncResult asyncResult)
   at System.Net.Dns.EndGetHostAddresses(IAsyncResult asyncResult)
   at System.Net.Dns.<>c.<GetHostAddressesAsync>b__14_1(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)<---

[BretFisher]

The .net worker is flaky on resolving redis and/or db. Try the java worker, which has the code in this repo but I don’t think docker made an image for. I have one built at bretfisher/examplevotingapp_worker:java so just replace your worker image with that and it should work better

[BretFisher]

We’re sorry for the late response. Linux images have been refreshed, cleaned up, and are now multi-platform. If you’re still having issues with the latest images, feel free to reopen this ticket.