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docker-ce: add default bridge to openwrt uci backend

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This commit adds two additional init.d targets:
* uciadd:
This command adds the default docker0 bridge to the network
configuration. Additional, a new firewall zone docker is created

* ucidel
This command removes default docker0 bridge from the network
configuration. The new docker firewall zone gets also deleted.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
This commit is contained in:
Florian Eckert 2020-07-21 15:26:04 +02:00
parent 00cb41275c
commit a84d951486
2 changed files with 101 additions and 6 deletions
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2
utils/docker-ce/Makefile
View File

@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=docker-ce
PKG_VERSION:=19.03.12
PKG_RELEASE:=3
PKG_RELEASE:=4
PKG_LICENSE:=Apache-2.0
PKG_LICENSE_FILES:=components/cli/LICENSE components/engine/LICENSE

105
utils/docker-ce/files/dockerd.init
View File

@ -3,14 +3,96 @@
USE_PROCD=1
START=25
EXTRA_COMMANDS="uciadd ucidel"
EXTRA_HELP="\
uciadd Add default bridge configuration to network and firewall uci config
ucidel Delete default bridge configuration from network and firewall uci config"
DOCKERD_CONF="/tmp/dockerd/daemon.json"
uci_quiet() {
uci -q ${@} >/dev/null
}
json_add_array_string() {
json_add_string "" "$1"
}
uciupdate() {
local net="$1"
uci -q get network.docker >/dev/null || {
logger -t "dockerd-init" -p warn "No network uci config section for docker default bridge (docker0) found"
return
}
[ -z "$net" ] && {
logger -t "dockerd-init" -p notice "Removing network uci config options for docker default bridge (docker0)"
uci_quiet delete network.docker.netmask
uci_quiet delete network.docker.ipaddr
uci_quiet commit network
return
}
eval "$(ipcalc.sh "$net")"
logger -t "dockerd-init" -p notice "Updating network uci config option \"$net\" for docker default bridge (docker0)"
uci_quiet set network.docker.netmask="$NETMASK"
uci_quiet set network.docker.ipaddr="$IP"
uci_quiet commit network
}
uciadd() {
/etc/init.d/dockerd running && {
echo "Please stop dockerd service first"
exit 0
}
# Add network interface
if ! uci -q get network.docker >/dev/null; then
logger -t "dockerd-init" -p notice "Adding docker default bridge to network uci config (docker0)"
uci_quiet add network interface
uci_quiet rename network.@interface[-1]="docker"
uci_quiet set network.docker.ifname="docker0"
uci_quiet set network.docker.proto="static"
uci_quiet set network.docker.auto="0"
uci_quiet commit network
fi
# Add firewall zone
if ! uci -q get firewall.docker >/dev/null; then
logger -t "dockerd-init" -p notice "Adding docker default bridge firewall zone (docker0)"
uci_quiet add firewall zone
uci_quiet rename firewall.@zone[-1]="docker"
uci_quiet set firewall.docker.network="docker"
uci_quiet set firewall.docker.input="REJECT"
uci_quiet set firewall.docker.output="ACCEPT"
uci_quiet set firewall.docker.forward="REJECT"
uci_quiet set firewall.docker.name="docker"
uci_quiet commit firewall
fi
reload_config
}
ucidel() {
/etc/init.d/dockerd running && {
echo "Please stop dockerd service first"
exit 0
}
logger -t "dockerd-init" -p notice "Deleting docker default bridge network from network uci config (docker0)"
uci_quiet delete network.docker
uci_quiet commit network
logger -t "dockerd-init" -p notice "Deleting docker default bridge firewall zone from firewall uci config (docker0)"
uci_quiet delete firewall.docker
uci_quiet commit firewall
reload_config
}
process_config() {
local alt_config_file data_root log_level
local alt_config_file data_root log_level bip
rm -f "$DOCKERD_CONF"
@ -30,17 +112,21 @@ process_config() {
config_get data_root globals data_root "/opt/docker/"
config_get log_level globals log_level "warn"
config_get bip globals bip ""
. /usr/share/libubox/jshn.sh
json_init
json_add_string "data-root" "$data_root"
json_add_string "log-level" "$log_level"
[ -z "$bip" ] || json_add_string "bip" "$bip"
json_add_array "registry-mirrors"
config_list_foreach globals registry_mirror json_add_array_string
json_close_array
mkdir -p /tmp/dockerd
json_dump > "$DOCKERD_CONF"
uciupdate "$bip"
}
start_service() {
@ -77,19 +163,25 @@ ip4tables_remove_nat() {
}
ip4tables_remove_filter() {
iptables -t filter -D FORWARD -j DOCKER-USER
# Chain DOCKER-USER is only present,
# if bip option is NOT set, so >/dev/null 2>&1
iptables -t filter -D FORWARD -j DOCKER-USER >/dev/null 2>&1
iptables -t filter -D FORWARD -j DOCKER-ISOLATION-STAGE-1
iptables -t filter -D FORWARD -o docker0 -j DOCKER
iptables -t filter -F DOCKER
iptables -t filter -F DOCKER-ISOLATION-STAGE-1
iptables -t filter -F DOCKER-ISOLATION-STAGE-2
iptables -t filter -F DOCKER-USER
# Chain DOCKER-USER is only present,
# if bip option is NOT set, so >/dev/null 2>&1
iptables -t filter -F DOCKER-USER >/dev/null 2>&1
iptables -t filter -X DOCKER
iptables -t filter -X DOCKER-ISOLATION-STAGE-1
iptables -t filter -X DOCKER-ISOLATION-STAGE-2
iptables -t filter -X DOCKER-USER
# Chain DOCKER-USER is only present,
# if bip option is NOT set, so >/dev/null 2>&1
iptables -t filter -X DOCKER-USER >/dev/null 2>&1
}
ip4tables_remove() {
@ -98,5 +190,8 @@ ip4tables_remove() {
}
stop_service() {
ip4tables_remove
if /etc/init.d/dockerd running; then
service_stop "/usr/bin/dockerd"
ip4tables_remove
fi
}