Some simple scripts to simplify configuring network namespaces on Debian-like
systems. Copy them into the corresponding directories under /etc/network
.
To configure an interface in a namespace:
auto eth1
iface eth1 inet manual
netns myns
On invocation of ifup
:
if-down.d
, if-post-down.d
, if-pre-up.d
and if-up.d
under /etc/netns/<namespace>/network
don't exist, they will be created/etc/netns/<namespace>/network/interfaces
file doesn't exist a
blank one will be createdifup
for this interface inside the namespace.zsh
functions to run commands and start a shell in a namespace with a custom promptnse () {
if [ $# -lt 2 ]; then
echo "Please specify a network namespace and a command"
echo "Usage: $0 <namespace> <command>"
return
fi
NS=${1}
shift
ARGS=${@}
ip netns exec ${NS} unshare -m /bin/sh -c "mount --make-rprivate /;mount --bind /run/network.${NS} /run/network; ${ARGS}"
}
nss () {
if [ $# -ne 1 ]; then
echo "Please specify a network namespace"
echo "Usage: $0 <namespace>"
return
fi
nse $1 zsh -i
}
alias nsr="nsenter -t 1 -n"
NS=`ip netns identify $$`
if [ "$NS" ]; then;
NS="/$NS"
fi
if [ "`id -u`" -eq 0 ]; then
export PS1="%{[33;36;1m%}%T%{[0m%} %{[33;34;1m%}%n%{[0m[33;33;1m%}@%{[33;37;1m%}%m${NS} %{[33;32;1m%}%~%{[0m[33;33;1m%}%#%{[0m%} "
else
export PS1="%{[33;36;1m%}%T%{[0m%} %{[33;31;1m%}%n%{[0m[33;33;1m%}@%{[33;37;1m%}%m${NS} %{[33;32;1m%}%~%{[0m[33;33;1m%}%#%{[0m%} "
fi