denzhel

If you lost the usernamd and/or password to your rabbitmq node, you can create a new admin user using:

rabbitmqctl add_user newadmin s0m3p4ssw0rd
rabbitmqctl set_user_tags newadmin administrator
rabbitmqctl set_permissions -p / newadmin ".*" ".*" ".*"

denzhel

To move a collection between databases, run the following from mongo shell:

use admin;
db.runCommand({renameCollection:"hours.night",to:"days.night"});

denzhel

If you're trying to rs.reconfigure() or rs.initiate() and you get the following error:

Cannot run replSetReconfig because the node is currently updating its configuration

And you can't seem to find any other solution, try this hack on each node of the replica set:

1. SSH to the first node
2. Edit Mongo's configuration file: sudo vi /etc/mongod.conf
3. Comment out the replicaset config block
4. Restart mongo: sudo service mongod restart
5. Open Mongo Shell: mongo

denzhel

#!/bin/bash
# Find out how many mongo connections does a deployment creates

# define variables
export PATH=$PATH:/usr/local/bin
CONTEXT="$1"
DEPLOYMENT="$2"
CONNECTIONS_COUNTER=0
REQUESTED_PORT=27017

denzhel

To configure a replica set with only one node, run the following:

rs.reconfig({_id: "mongo",version: 1,members: [{ _id: 0, host : "HOSTNAME:27017" }]},{force:true})

denzhel

After getting these errors:

Client.Timeout exceeded while awaiting headers

I had to add the following value in Keda's Operator helm chart:

# set http timeout in milliseconds
http:
  timeout: 10000

denzhel

To scale your deployment run the following:

kubectl scale deployment <DeploymentName> --replicas=X

denzhel

To intall a kafka minion inside your name space, run the following:

helm install kafka-minion kafka-minion/kafka-minion --set "kafka.brokers=kafka:9092,serviceMonitor.create=true" --version=1.3.0

denzhel

To delete files older than X days, use this:

find ~/ -maxdepth 1 -type f -mtime +7 -delete

denzhel

To configure your TF code to connect to your localstack instead of the real env, use this full provider config:

provider "aws" {
  region                      = "eu-central-1"
  access_key                  = "fake"
  secret_key                  = "fake"
  skip_credentials_validation = true
  skip_metadata_api_check     = true
  skip_requesting_account_id  = true