Relrin

1) In psql tool find the path to configuration file:
SHOW config_file;
2) In config:
shared_preload_libraries = 'pg_stat_statements'
3) After it restart the node via using `service postgresql restart`
4) In psql:
CREATE EXTENSION pg_stat_statements;

Queries:
SELECT pid,datname,usename,client_addr,query_start,query FROM pg_stat_activity;

Relrin

#!/bin/bash
# Copy this file into /bin folder of your virtual environment and let this this be executable

PYVER=3.6
PYTHON=/usr/local/bin/python$PYVER

ENV=`$PYTHON -c "import os; print(os.path.abspath(os.path.join(os.path.dirname(\"$0\"), '..')))"`

export PYTHONHOME=$ENV
exec $PYTHON "$@"

Relrin

ENV=`python -c "import sys; print sys.prefix"`
PYTHON=`python -c "import sys; print sys.real_prefix"`/bin/python
export PYTHONHOME=$ENV
exec $PYTHON "$@"