Install tmux

apt install tmux -y
cd ${HOME}
git clone https://github.com/gpakosz/.tmux.git
ln -s -f .tmux/.tmux.conf
cp .tmux/.tmux.conf.local .

Edit the default theme

vim .tmux.conf.local

Change tmux_conf_theme_status_right

tmux_conf_theme_status_right='#{prefix}#{pairing} , #{loadavg} , %R , %d %b | #{username}#{root} | #{hostname} '

reload tmux

tmux source-file ~/.tmux.conf