Category Archives: Uncategorized

Rancher Desktop – Is the docker daemon running?

After I’ve uninstall Docker Desktop and installed Rancher Desktop, I had the following error:

ionut@home % docker ps -a
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

The way I’ve resolved this issue was to run the following command. Worked like a charm.

sudo ln -s ~$USER/.rd/docker.sock /var/run/docker.sock

How to Detect Memory Leaks in Java* +: Tips and Tricks


First thing: LOGS

JVM generates can generate 3 types of logs, to help you optimise the performance.

  1. GC log
  2. Thread Dump
  3. Heap Dump

Check GC algorithm

With Java 11+, G1 algorithm is the default one. For java8+ version, this new algorithm needs to be enabled explicitly.

Useful tools:

How to fix grunt error “Cannot find module ‘lru-cache'”

To fix this error is very simple: you just have tot clean your node modules:

$ grunt install:development
Loading "Gruntfile.js" tasks...ERROR
>> Error: Cannot find module 'lru-cache'
Warning: Task "install:development" not found. Use --force to continue.

Aborted due to warnings.

john@C370012100004 /C/projects/nodejsp(develop)
$ rm -rf node_modules && npm cache clean && npm install