docker : list containers in a specific network

 

List containers in a precise 

$ docker network ls
NETWORK ID     NAME                               DRIVER    SCOPE
f732a9b3c5a1   bridge                             bridge    local
7ec614323767   host                               host      local
...

docker network inspect     -f '{{ range $key, $value := .Containers }}{{printf "%s: %s\n" $key .Name}}{{ end }}' <NETWORK NAME>
<ID> <Name>

Dummynet interfaces

The dummy modules in Linux allow you to have multiple "fake" network interfaces on your computer.

It's useful to test distributed programs locally.

Test if dummy is loaded :

lsmod | grep dummy

insmod dummy

Create a first dummy interface :

ifconfig dummy0 10.0.0.1

Create another one :

ifconfig dummy0:1 10.0.0.2

Destroy a dummy interface :

ifconfig dummyX:Y down

Tor et firefox (+polipo)

Sous ubuntu, avec firefox :

Il est conseillé d'utiliser Tor, avec le proxy "polipo", et "tor button" (addon firefox)


http://www.torproject.org/docs/tor-doc-unix.html.en#polipo

live network trafic view ? iptraf, iftop

A explorer

http://www.commentcamarche.net/faq/sujet-848-linux-trafic-entrant-sortant-en-temps-reel


On trouvera ci dessous les extraits des deux manpages de iptraf et ethstatus.
Intéressant pour comptabiliser la quantité de données qui circulent sur les différentes interfaces, ainsi que pour monitorer quelles sont les connexions ouvertes.

Après un bref test, "ethstatus" m'a cependant l'air d'utiliser beaucoup de ressources CPU, et semble être surtout un reformatage des infos d'ifconfig. Peu intéressant donc.

Au contraire, "iptraf" était plus léger et apportait plus d'informations.

Egalement, iftop fourni plus d'informations et permet de lister les connextions courantes un peu comme "top" le ferait.

IPTRAF(8)                                                            IPTRAF(8)

NAME
       iptraf - Interactive Colorful IP LAN Monitor

SYNOPSIS
       iptraf { [ -f ] [ -q ] [ -u ] [ { -i iface | -g | -d iface | -s iface |
       -z iface | -l iface } [ -t timeout ] [ -B [ -L logfile ] ] ] | [ -h ] }

DESCRIPTION
       iptraf  is  an ncurses-based IP LAN monitor that generates various net‐
       work statistics including TCP info, UDP counts, ICMP and OSPF  informa‐
       tion, Ethernet load info, node stats, IP checksum errors, and others.

       If  the command is issued without any command-line options, the program
       comes up in interactive mode,  with  the  various  facilities  accessed
       through the main menu.

IFTOP(8)                                                              IFTOP(8)

NAME
       iftop - display bandwidth usage on an interface by host

SYNOPSIS
       iftop -h | [-nNpbBP] [-i interface] [-f filter code] [-F net/mask]

DESCRIPTION
       iftop  listens to network traffic on a named interface, or on the first
       interface it can find which looks like an external interface if none is
       specified,  and displays a table of current bandwidth usage by pairs of
       hosts.  iftop must be run with sufficient permissions  to  monitor  all
       network traffic on the interface; see pcap(3) for more information, but
       on most systems this means that it must be run as root.

       By default, iftop will look up the hostnames associated with  addresses
       it  finds in packets. This can cause substantial traffic of itself, and
       may result in a confusing display. You may wish to suppress display  of
       DNS  traffic by using filter code such as not port domain, or switch it
       off entirely, by using the -n option or by pressing R when the  program
       is running.

       By  default,  iftop counts all IP packets that pass through the filter,
       and the direction of the packet is determined according to  the  direc‐
       tion the packet is moving across the interface.  Using the -F option it
       is possible to get iftop to show packets entering and leaving  a  given
       network.  For example, iftop -F 10.0.0.0/255.0.0.0 will analyse packets
       flowing in and out of the 10.* network.