I've started to use Terminator instead of Tmux
Anyway - here is the tmux config which worked for me.
nano /root/.tmux.conf
# 0 is too far from ` ;)set -g base-index 1​# Automatically set window titleset-window-option -g automatic-rename onset-option -g set-titles on​#set -g default-terminal screen-256colorset -g status-keys viset -g history-limit 10000​setw -g mode-keys visetw -g mode-mouse onsetw -g monitor-activity on​bind-key v split-window -hbind-key s split-window -v​bind-key J resize-pane -D 5bind-key K resize-pane -U 5bind-key H resize-pane -L 5bind-key L resize-pane -R 5​bind-key M-j resize-pane -Dbind-key M-k resize-pane -Ubind-key M-h resize-pane -Lbind-key M-l resize-pane -R​# Vim style pane selectionbind h select-pane -Lbind j select-pane -Dbind k select-pane -Ubind l select-pane -R​# Use Alt-vim keys without prefix key to switch panesbind -n M-h select-pane -Lbind -n M-j select-pane -Dbind -n M-k select-pane -Ubind -n M-l select-pane -R​# Use Alt-arrow keys without prefix key to switch panesbind -n M-Left select-pane -Lbind -n M-Right select-pane -Rbind -n M-Up select-pane -Ubind -n M-Down select-pane -D​# Shift arrow to switch windowsbind -n S-Left previous-windowbind -n S-Right next-window​# No delay for escape key pressset -sg escape-time 0​# Reload tmux configbind r source-file ~/.tmux.conf​# THEMEset -g status-bg blackset -g status-fg whiteset -g window-status-current-bg whiteset -g window-status-current-fg blackset -g window-status-current-attr boldset -g status-interval 60set -g status-left-length 30set -g status-left '#[fg=green](#S) #(whoami)'set -g status-right '#[fg=yellow]#(cut -d " " -f 1-3 /proc/loadavg)#[default] #[fg=white]%H:%M#[default]'
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