46 lines
1.2 KiB
Markdown
46 lines
1.2 KiB
Markdown
# ifupdown-netns
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Some simple scripts to simplify configuring network namespaces on Debian-like
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systems. Copy them into the corresponding directories under `/etc/network`.
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To configure an interface in a namespace:
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```
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auto eth1
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iface eth1 inet manual
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netns myns
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```
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On invocation of `ifup`:
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* if the namespace doesn't exist it will be created
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* if the folders `if-down.d`, `if-post-down.d`, `if-pre-up.d` and `if-up.d`
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under `/etc/netns/<namespace>/network` don't exist, they will be created
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* if the `/etc/netns/<namespace>/network/interfaces` file doesn't exist a
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blank one will be created
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* if it does and the interface is configured, the script will invoke `ifup`
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for this interface inside the namespace.
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## `zsh` functions to run commands and start a shell in a namespace
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```
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nse () {
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if [ $# -lt 2 ]; then
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echo "Please specify a network namespace and a command"
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return
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fi
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NS=${1}
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shift
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unshare -m /bin/sh <<-EOF
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mount --make-rprivate /
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mount --bind /run/network.${NS} /run/network
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ip netns exec ${NS} ${@}
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EOF
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}
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nss () {
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if [ $# -ne 1 ]; then
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echo "Please specify a network namespace"
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return
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fi
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nse $1 zsh -i
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}
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```
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