Could not load dynamic library 'libnvinfer.so.7' - tensorflow

Question

I know that this question has been asked a lot, but none of the suggestions seem to work, probably since my setup is somewhat different:
Ubuntu 22.04
python 3.10.8
tensorflow 2.11.0
cudatoolkit 11.2.2
cudnn 8.1.0.77
nvidia-tensorrt 8.4.3.1
nvidia-pyindex 1.0.9
Having created a conda environment 'tf', in the directory home/dan/anaconda3/envs/tf/lib/python3.10/site-packages/tensorrt I have
libnvinfer_builder_resource.so.8.4.3
libnvinfer_plugin.so.8
libnvinfer.so.8
libnvonnxparser.so.8
libnvparsers.so.8
tensorrt.so
When running python3 -c "import tensorflow as tf; print(tf.config.list_physical_devices('GPU'))" I get
tensorflow/compiler/xla/stream_executor/platform/default/dso_loader.cc:64] Could not load dynamic library 'libnvinfer.so.7';
dlerror: libnvinfer.so.7: cannot open shared object file: No such file or directory;
LD_LIBRARY_PATH: :/home/dan/anaconda3/envs/tf/lib
tensorflow/compiler/xla/stream_executor/platform/default/dso_loader.cc:64] Could not load dynamic library 'libnvinfer_plugin.so.7';
dlerror: libnvinfer_plugin.so.7: cannot open shared object file: No such file or directory;
LD_LIBRARY_PATH: :/home/dan/anaconda3/envs/tf/lib
tensorflow/compiler/tf2tensorrt/utils/py_utils.cc:38] TF-TRT Warning: Cannot dlopen some TensorRT libraries. If you would like to use Nvidia GPU with TensorRT, please make sure the missing libraries mentioned above are installed properly.
[PhysicalDevice(name='/physical_device:GPU:0', device_type='GPU')]
I'm guessing I should downgrade nvidia-tensorrt, but nothing I've tried seems to work, any advice would be much appreciated.

Answer 1

Solution: follow the steps listed here https://github.com/tensorflow/tensorflow/issues/57679#issuecomment-1249197802.
Add the following to ~/.bashrc (for the conda envs as described in my scenario):
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/dan/anaconda3/lib/
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/dan/anaconda3/lib/python3.8/site-packages/tensorrt/
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/dan/anaconda3/envs/tf/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/dan/anaconda3/envs/tf/lib/python3.8/site-packages/tensorrt/

Answer 2

For me the setting a symbolic link from libnvinfer version 7 to 8 worked:
# the follwoing path will be different for you - depending on your install method
$ cd env/lib/python3.10/site-packages/tensorrt
# create symbolic links
$ ln -s libnvinfer_plugin.so.8 libnvinfer_plugin.so.7
$ ln -s linvinfer.so.8 libnvinfer.so.7
# add tensorrt to library path
$ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:~/env/lib/python3.10/site-packages/tensorrt/