superseb

version: '2'

services:
  udp:
    image: mendhak/udp-listener
    environment:
    - UDPPORT=6343
    labels:
      io.rancher.scheduler.global: 'true'
    ports:

superseb

1. Commit your change (git commit)
2. Create patch from commit (git format-patch master --stdout > my_patch.patch)
3. Apply patch to other file (patch -p1 your_other_file my_patch.patch)

superseb

curl -s http://xxx/v2-beta/projects/1a5/hosts/1h1 | jq '.milliCpu,.memory/1024/1024'

superseb

#!/bin/bash
curl -s $RANCHER_URL/containers | jq '.data[] | select(.data.dockerContainer.Labels["io.rancher.stack_service.name"] == "network-services/metadata") | .primaryIpAddress'

superseb

1. Boot RancherOS with rancher.autologin=tty1
2. Put cloud-config.yml in /var/lib/rancher/conf/cloud-config.d/
3. Run the command cloud-init-execute
4. Check the contents of /home/rancher/.ssh/authorized_keys
5. Try to login and if it doesn't work, check logging in /var/log/messages

superseb

curl 'http://<rancher_server_ip>/v2-beta/apikey' -H 'content-type: application/json' --data-binary '{"type":"apiKey","accountId":"1a1","name":"kubectl","description":"Provides workstation access to kubectl"}' --compressed | jq -r '.publicValue + ":" + .secretValue' | base64 | tr /+ _- | tr -d =

superseb

Move rancher/server container with volumes to other host + change of DNS name (Host Registration URL/CATTLE_URL/API URL) for Rancher 1.6

This applies to Rancher 1.6 only

Variables used in this guide:

• Old URL: http://old.test.com:8080
• New URL: http://new.test.com:8080
• Container name running rancher/server image: rancher_server
• Old host: oldhost
• New host: newhost

superseb

Get nodes from API

BEARER=`cat /etc/kubernetes/ssl/kubeconfig  | grep token | awk '{ print $2 }' | sed -e "s/\"//g"` curl -H "Authorization: Bearer $BEARER" --key /etc/kubernetes/ssl/key.pem --cacert /etc/kubernetes/ssl/ca.pem https://kubernetes.kubernetes.rancher.internal:6443/api/v1/nodes | jq .items[].metadata.name

superseb

Troubleshoot steps for Linux host

Check if Docker daemon is responsive

• docker ps

If not responsive, capture necessary data:

• kill -SIGUSR1 $(pidof dockerd)
• kill -3 $(pidof /var/lib/cattle/pyagent/agent)
• docker info
• /var/log/messages or /var/log/syslog

superseb

package main

import "fmt"
import "regexp"

func main() {
	s := []string{
	        // Native Docker
		"4:devices:/system.slice/docker-59f07deb768a054b383585093953c642f104c298bdf11422e95de5b10da7d174.scope",
		// Upstream Docker