UnsupportedOperation: not writable error in the console of Spyder when running click.
You need to edit the echo function definition at ../site-packages/click/utils.py the default value for the file parameter must be sys.stdout instead of None.
Do the same for the secho function definition at ../site-packages/click/termui.py
In Devstack, the Python packages/libs, e.g., python-tackerclient , tacker-horizon , are not easy to develop because normally they will be installed under python’s site-packages. Therefore, to easy for developing, we can install from the local environment and work on it:
1. Clone the repo of the project:
git clone git://git.openstack.org/openstack/python-tackerclient -b <branch>
sudo pip install -U -e .
3. Make changes.
Note: You need restart Apache server to work with tacker-horizon
sudo systemctl restart apache2
Byobu is an easy-to-use wrapper around the tmux (or screen) terminal multiplexer. This means that it makes it easy for you to open multiple windows and run multiple commands within a single terminal connection.
The lock is placed when an apt process is running and is removed when the process completes. If there is a lock with no apparent process running, this may mean the process got stuck for some reason.
Someone might attack your Linux based system. You can drop attacker IP using IPtables.
However, you can use the route or ip command to null route unwanted traffic. A null route (also called as blackhole route) is a network route or kernel routing table entry that goes nowhere. Matching packets are dropped (ignored) rather than forwarded, acting as a kind of very limited firewall. The act of using null routes is often called blackhole filtering.
You can null route (like some time ISP do prevent your network device from sending any data to a remote system) stopping various attacks coming from a single IP (read as spammers or hackers IP) using the following syntax on a Linux based system.