denzhel

Use the following command to recover your Elasticsearch cluster faster than ever:

curl -X PUT localhost:9200/_cluster/settings -H 'Content-Type: application/json' -d'
{
  "transient": {
    "cluster.routing.allocation.node_concurrent_recoveries":30,
    "indices.recovery.max_bytes_per_sec": "100mb"
  }
}'

denzhel

To show the default settings of your Elasticsearch cluster, use the following:

GET /_cluster/settings?include_defaults

denzhel

To delete a secret immediately, use the following command:

aws secretsmanager delete-secret --secret-id <SECRET_NAME> --force-delete-without-recovery --region <AWS_SM_REGION>

denzhel

I had this YAML list and I needed to extract the name of the first server without the port:

global:
  datastores:
     db:
       hosts:
       - name: prod-mongo-11
         port: 27017
       - name: prod-mongo-12
 port: 27017

denzhel

I used this on a ES 5.5 cluster to disable shard allocation and do some maintainance work:

curl -X PUT "http://localhost:9250/_cluster/settings?pretty" \
-H 'Content-Type: application/json' -d \
'{   "persistent": {     "cluster.routing.allocation.enable": "none"   } }'

Then enable shard allocation:

curl -X PUT "http://localhost:9250/_cluster/settings?pretty" \

denzhel

To avoid the annoying vim binary end of line , set the following in your vim config file:

set noendofline
set nofixendofline

denzhel

The following function takes a map of hosts and ports:

  datastores:
    db:
      database: data
      replicaSet: mongo
      servers:
      - host: a
        port: 27017
 - host: b

denzhel

Since I use VIM as my main IDE, alot of times I have to remove the new line that is added to files when I edit them. To do that, edit the file you are working on and type the following:

:set noendofline binary
:wq!

denzhel

If you want to destroy something from your state that has a lot of resources with a common name you can use the following:

terraform apply $(for i in $(tf state list | grep <Name>); do echo -n "-target=$i " ; done) 

e.g I use it to destroy a datastore that has many resources such as EC2, Route53 records, EBS and etc ..

#terraform

denzhel

If you don't have Kafkacat installed you can use the default tools installed with the server:

./kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic <TopicNaame> --from-beginning

#kafka