Cluster Volume Error

[aarajbhattarai]

Bug Report

Expected behavior/code
Creation of cluster

Actual Behavior
make cluster
readlink: illegal option -- f
usage: readlink [-n] [file ...]
WARN[0000] No node filter specified
INFO[0000] Prep: Network
INFO[0000] Re-using existing network 'k3d-arnold' (b738e8de245559a843541bd802166913bb15b879de38e02f496d9fbea39b75ca)
INFO[0000] Created volume 'k3d-arnold-images'
INFO[0001] Creating node 'k3d-arnold-server-0'
ERRO[0001] Failed to create container 'k3d-arnold-server-0'
ERRO[0001] Failed to create node 'k3d-arnold-server-0'
ERRO[0001] Failed to create node
ERRO[0001] Failed Cluster Creation: Error response from daemon: create ./k3d-storage: "./k3d-storage" includes invalid characters for a local volume name, only "[a-zA-Z0-9][a-zA-Z0-9_.-]" are allowed. If you intended to pass a host directory, use absolute path
ERRO[0001] Failed to create cluster >>> Rolling Back
INFO[0001] Deleting cluster 'arnold'
ERRO[0001] No nodes found for given cluster
FATA[0001] Cluster creation FAILED, also FAILED to rollback changes!
make: *** [cluster] Error 1

Steps to Reproduce

1. Do this...
2. Then this...
3. And then the bug happens!

Environment

• Arnold version: 6.0.0
• Platform: MacOs BigSur Version 11.4

Possible Solution
Using $pwd to provide the absolute path

Additional context/Screenshots
sudo sysctl -w vm/max_map_count=262144
OUTPUT
sysctl: unknown oid 'vm/max_map_count'

[madmatah]

Thanks for your feedback @aarajbhattarai

arnold CLI uses the -f option of readlink that is unsupported by the MacOS version of readlink.
We should fix it to use a POSIX compliant alternative.

In the meantime, I can suggest you to install the coreutils to have a version of readlink that supports the -f option:

brew install coreutils --with-default-names

About sysctl command to tune vm/max_map_count for Elasticsearch, you might try this solution on Mac

[aarajbhattarai]

Thank you so much @madmatah
File: bin/init-cluster
Objective: Generate an unique identifier for the PV
PV_ID=$(uuidgen)
On Linux this command returns a lowercase string of a UUID.
But on Mac OS X it returning an uppercase string of a UUID.
The solution for MacOs would be
PV_ID=$(uuidgen | tr "[:upper:]" "[:lower:]")