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live, net: shift and rework network and resolver setup

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50-setup-network was a hasty hack (surprise!) that used to do
what net and net-eth features have been created to do since;
just drop the duplicated crufty code.

Unconditional resolver setup isn't done now: those with static
setup are better off doing it explicitly, and those with DHCP
should be fine already.

NB: /etc/hosts *is* fine within setup package *but* hasher will
    overwrite it with a copy of host's one; let's reset contents
    to initial at least until hasher gets fixed and the fix is
    rather deployed in the wild.
This commit is contained in:
Michael Shigorin 2014-03-14 18:21:40 +04:00
parent 75bf4afcaa
commit 5d829265db
3 changed files with 18 additions and 68 deletions
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2
features.in/live/config.mk
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@ -18,7 +18,7 @@ use/live: use/stage2 sub/rootfs@live sub/stage2@live use/services
@$(call add,DEFAULT_SERVICES_ENABLE,$(_ON))
@$(call add,DEFAULT_SERVICES_DISABLE,$(_OFF))
use/live/base: use/live use/syslinux/ui/menu
use/live/base: use/live use/net use/syslinux/ui/menu
@$(call add,LIVE_LISTS,$(call tags,base && (live || network)))
# rw slice, see http://www.altlinux.org/make-initrd-propagator and #28289

67
features.in/live/live/image-scripts.d/50-setup-network
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@ -1,67 +0,0 @@
#!/bin/sh
# Setup network settings
# 1. Init /etc/hosts with "127.0.0.1 localhost"
# 2. Set hostname, domainname
# 3. Set defaults for NetworkManager or
# attempt to autoconfigure eth0 by etcnet.
. shell-config
verbose()
{
if [ -n "$GLOBAL_VERBOSE" ]; then
echo "HOOK: 50-setup-network: $@"
fi
}
verbose "has started"
# At startup time hostname may be changed by live-hostname package.
HOSTNAME="localhost.localdomain"
DOMAINNAME="localdomain"
verbose "Init /etc/hosts with 127.0.0.1 localhost"
echo "127.0.0.1 localhost localhost.localdomain" > /etc/hosts
prefix="/etc/net/ifaces"
# seems like aufs bug on O_TRUNC writes:
# aufs au_lkup_neg:267:kworker/0:2[998]:
# I/O Error, resolv.conf should be negative on b0.
# OTOH lo interface is now brought up in initrd
# so this shoudn't really matter
if [ -d "$prefix"/lo ]; then
echo 'nameserver 8.8.8.8' >> "$prefix"/lo/resolv.conf
fi
find /var -name resolv.conf -or -name nsswitch.conf -delete
netcfg="/etc/sysconfig/network"
verbose "Enable networking, set hostname to $HOSTNAME, domainname to $DOMAINNAME"
shell_config_set "$netcfg" NETWORKING yes
shell_config_set "$netcfg" HOSTNAME "$HOSTNAME"
shell_config_set "$netcfg" DOMAINNAME "$DOMAINNAME"
# NB: see also #28484 and livecd-net-eth for runtime configuration
defcfg="$prefix/default/options-eth"
if [ -x /usr/sbin/NetworkManager -o -x /usr/sbin/connmand ] ; then
verbose "Setup defaults for NetworkManager/connman"
shell_config_set "$defcfg" NM_CONTROLLED yes
shell_config_set "$defcfg" DISABLED yes
shell_config_set "$defcfg" BOOTPROTO dhcp
else
# attempt to autoconfigure ethernet by etcnet
if [ -x /lib/udev/write_net_rules ] &&
[ -x /sbin/dhcpcd -o -x /sbin/dhclient ]; then
verbose "configuring DHCP for eth0"
mkdir -p "$prefix"/eth0 && {
echo TYPE=eth
echo BOOTPROTO=dhcp
echo DHCP_TIMEOUT=3
} > "$prefix"/eth0/options
else
verbose "NOT configuring eth0 for DHCP"
fi
fi
verbose "finished"

17
features.in/net/rootfs/image-scripts.d/50-net-resolv Executable file
View File

@ -0,0 +1,17 @@
#!/bin/sh
# offer some convenient servers for static configuration cases
if [ -d /etc/net/ifaces/lo ]; then
{
echo "# yandex"
echo "#nameserver 77.88.8.1"
echo "# google"
echo "#nameserver 8.8.8.8"
echo "# level3"
echo "#nameserver 4.2.2.3"
} >> /etc/net/ifaces/lo/resolv.conf
fi
find /var -name resolv.conf -or -name nsswitch.conf -delete
# hasher might have carried host /etc/hosts over, need to overwrite
echo "127.0.0.1 localhost.localdomain localhost" > /etc/hosts