root / kvm-vif-bridge @ e27db5e5
History | View | Annotate | Download (4.7 kB)
1 | cf51ea5b | Dimitris Aragiorgis | #!/bin/bash |
---|---|---|---|
2 | cf51ea5b | Dimitris Aragiorgis | |
3 | cf51ea5b | Dimitris Aragiorgis | # This is an example of a Ganeti kvm ifup script that configures network |
4 | cf51ea5b | Dimitris Aragiorgis | # interfaces based on the initial deployment of the Okeanos project |
5 | cf51ea5b | Dimitris Aragiorgis | |
6 | cf51ea5b | Dimitris Aragiorgis | TAP_CONSTANT_MAC=cc:47:52:4e:45:54 # GRNET in hex :-) |
7 | cf51ea5b | Dimitris Aragiorgis | MAC2EUI64=/usr/bin/mac2eui64 |
8 | cf51ea5b | Dimitris Aragiorgis | NFDHCPD_STATE_DIR=/var/lib/nfdhcpd |
9 | cf51ea5b | Dimitris Aragiorgis | |
10 | 2b9e52e1 | Dimitris Aragiorgis | function clear_routed_setup_ipv4 { |
11 | d2b16e51 | Dimitris Aragiorgis | |
12 | 2b9e52e1 | Dimitris Aragiorgis | arptables -D OUTPUT -o $INTERFACE --opcode request -j mangle |
13 | 2b9e52e1 | Dimitris Aragiorgis | while ip rule del dev $INTERFACE; do :; done |
14 | 2b9e52e1 | Dimitris Aragiorgis | iptables -D FORWARD -i $INTERFACE -p udp --dport 67 -j DROP |
15 | d2b16e51 | Dimitris Aragiorgis | |
16 | 2b9e52e1 | Dimitris Aragiorgis | } |
17 | d2b16e51 | Dimitris Aragiorgis | |
18 | 2b9e52e1 | Dimitris Aragiorgis | function clear_routed_setup_ipv6 { |
19 | 7d163a24 | Dimitris Aragiorgis | |
20 | 2b9e52e1 | Dimitris Aragiorgis | while ip -6 rule del dev $INTERFACE; do :; done |
21 | 7d163a24 | Dimitris Aragiorgis | |
22 | 7d163a24 | Dimitris Aragiorgis | } |
23 | 7d163a24 | Dimitris Aragiorgis | |
24 | 2b9e52e1 | Dimitris Aragiorgis | |
25 | 2b9e52e1 | Dimitris Aragiorgis | function clear_routed_setup_firewall { |
26 | 2b9e52e1 | Dimitris Aragiorgis | |
27 | 2b9e52e1 | Dimitris Aragiorgis | for oldchain in protected unprotected limited; do |
28 | 2b9e52e1 | Dimitris Aragiorgis | iptables -D FORWARD -o $INTERFACE -j $oldchain |
29 | 2b9e52e1 | Dimitris Aragiorgis | ip6tables -D FORWARD -o $INTERFACE -j $oldchain |
30 | 2b9e52e1 | Dimitris Aragiorgis | done |
31 | 2b9e52e1 | Dimitris Aragiorgis | |
32 | 2b9e52e1 | Dimitris Aragiorgis | } |
33 | 2b9e52e1 | Dimitris Aragiorgis | |
34 | 2b9e52e1 | Dimitris Aragiorgis | function clear_ebtables { |
35 | 2b9e52e1 | Dimitris Aragiorgis | TAP=$INTERFACE |
36 | 2b9e52e1 | Dimitris Aragiorgis | FROM=FROM${TAP^^} |
37 | 2b9e52e1 | Dimitris Aragiorgis | TO=TO${TAP^^} |
38 | 2b9e52e1 | Dimitris Aragiorgis | |
39 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -D INPUT -i $TAP -j $FROM |
40 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -D FORWARD -i $TAP -j $FROM |
41 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -D FORWARD -o $TAP -j $TO |
42 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -D OUTPUT -o $TAP -j $TO |
43 | 2b9e52e1 | Dimitris Aragiorgis | |
44 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -X $FROM |
45 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -X $TO |
46 | 2b9e52e1 | Dimitris Aragiorgis | } |
47 | 2b9e52e1 | Dimitris Aragiorgis | |
48 | 2b9e52e1 | Dimitris Aragiorgis | |
49 | 2b9e52e1 | Dimitris Aragiorgis | |
50 | cf51ea5b | Dimitris Aragiorgis | function routed_setup_ipv4 { |
51 | cf51ea5b | Dimitris Aragiorgis | |
52 | cf51ea5b | Dimitris Aragiorgis | # mangle ARPs to come from the gw's IP |
53 | d2b16e51 | Dimitris Aragiorgis | arptables -A OUTPUT -o $INTERFACE --opcode request -j mangle --mangle-ip-s "$GATEWAY" |
54 | cf51ea5b | Dimitris Aragiorgis | |
55 | cf51ea5b | Dimitris Aragiorgis | # route interface to the proper routing table |
56 | f8e790c4 | Dimitris Aragiorgis | ip rule add dev $INTERFACE table $TABLE |
57 | cf51ea5b | Dimitris Aragiorgis | |
58 | cf51ea5b | Dimitris Aragiorgis | # static route mapping IP -> INTERFACE |
59 | cf51ea5b | Dimitris Aragiorgis | ip route replace $IP proto static dev $INTERFACE table $TABLE |
60 | cf51ea5b | Dimitris Aragiorgis | |
61 | cf51ea5b | Dimitris Aragiorgis | # Enable proxy ARP |
62 | cf51ea5b | Dimitris Aragiorgis | echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp |
63 | cf51ea5b | Dimitris Aragiorgis | } |
64 | cf51ea5b | Dimitris Aragiorgis | |
65 | cf51ea5b | Dimitris Aragiorgis | function routed_setup_ipv6 { |
66 | cf51ea5b | Dimitris Aragiorgis | # Add a routing entry for the eui-64 |
67 | ed7f0f2a | Dimitris Aragiorgis | prefix=$SUBNET6 |
68 | e27db5e5 | Dimitris Aragiorgis | uplink=$PUBLIC_VLAN |
69 | cf51ea5b | Dimitris Aragiorgis | eui64=$($MAC2EUI64 $MAC $prefix) |
70 | cf51ea5b | Dimitris Aragiorgis | |
71 | f8e790c4 | Dimitris Aragiorgis | |
72 | cf51ea5b | Dimitris Aragiorgis | ip -6 rule add dev $INTERFACE table $TABLE |
73 | cf51ea5b | Dimitris Aragiorgis | ip -6 ro replace $eui64/128 dev $INTERFACE table $TABLE |
74 | 2b9e52e1 | Dimitris Aragiorgis | ip -6 neigh add proxy $eui64 dev $uplink |
75 | cf51ea5b | Dimitris Aragiorgis | |
76 | cf51ea5b | Dimitris Aragiorgis | # disable proxy NDP since we're handling this on userspace |
77 | cf51ea5b | Dimitris Aragiorgis | # this should be the default, but better safe than sorry |
78 | cf51ea5b | Dimitris Aragiorgis | echo 0 > /proc/sys/net/ipv6/conf/$INTERFACE/proxy_ndp |
79 | cf51ea5b | Dimitris Aragiorgis | } |
80 | cf51ea5b | Dimitris Aragiorgis | |
81 | cf51ea5b | Dimitris Aragiorgis | # pick a firewall profile per NIC, based on tags (and apply it) |
82 | cf51ea5b | Dimitris Aragiorgis | function routed_setup_firewall { |
83 | cf51ea5b | Dimitris Aragiorgis | ifprefix="synnefo:network:$INTERFACE_INDEX:" |
84 | cf51ea5b | Dimitris Aragiorgis | for tag in $TAGS; do |
85 | cf51ea5b | Dimitris Aragiorgis | case ${tag#$ifprefix} in |
86 | cf51ea5b | Dimitris Aragiorgis | protected) |
87 | cf51ea5b | Dimitris Aragiorgis | chain=protected |
88 | cf51ea5b | Dimitris Aragiorgis | ;; |
89 | cf51ea5b | Dimitris Aragiorgis | unprotected) |
90 | cf51ea5b | Dimitris Aragiorgis | chain=unprotected |
91 | cf51ea5b | Dimitris Aragiorgis | ;; |
92 | cf51ea5b | Dimitris Aragiorgis | limited) |
93 | cf51ea5b | Dimitris Aragiorgis | chain=limited |
94 | cf51ea5b | Dimitris Aragiorgis | ;; |
95 | cf51ea5b | Dimitris Aragiorgis | esac |
96 | cf51ea5b | Dimitris Aragiorgis | done |
97 | cf51ea5b | Dimitris Aragiorgis | |
98 | cf51ea5b | Dimitris Aragiorgis | if [ "x$chain" != "x" ]; then |
99 | cf51ea5b | Dimitris Aragiorgis | iptables -A FORWARD -o $INTERFACE -j $chain |
100 | cf51ea5b | Dimitris Aragiorgis | ip6tables -A FORWARD -o $INTERFACE -j $chain |
101 | cf51ea5b | Dimitris Aragiorgis | fi |
102 | cf51ea5b | Dimitris Aragiorgis | } |
103 | cf51ea5b | Dimitris Aragiorgis | |
104 | 7d163a24 | Dimitris Aragiorgis | function setup_ebtables { |
105 | f6f980d5 | Dimitris Aragiorgis | TAP=$INTERFACE |
106 | f6f980d5 | Dimitris Aragiorgis | FROM=FROM${TAP^^} |
107 | f6f980d5 | Dimitris Aragiorgis | TO=TO${TAP^^} |
108 | cf51ea5b | Dimitris Aragiorgis | |
109 | cf51ea5b | Dimitris Aragiorgis | ebtables -N $FROM |
110 | 7d163a24 | Dimitris Aragiorgis | # do not allow changes in ip-mac pair |
111 | 2b9e52e1 | Dimitris Aragiorgis | if [ -n "$IP"]; then |
112 | 2b9e52e1 | Dimitris Aragiorgis | ebtables -A $FROM --ip-source \! $IP -p ipv4 -j DROP |
113 | 2b9e52e1 | Dimitris Aragiorgis | fi |
114 | d2b16e51 | Dimitris Aragiorgis | ebtables -A $FROM -s \! $MAC -j DROP |
115 | d2b16e51 | Dimitris Aragiorgis | ebtables -A FORWARD -i $TAP -j $FROM |
116 | cf51ea5b | Dimitris Aragiorgis | ebtables -N $TO |
117 | cf51ea5b | Dimitris Aragiorgis | ebtables -A FORWARD -o $TAP -j $TO |
118 | f6f980d5 | Dimitris Aragiorgis | #accept dhcp responses from host (nfdhcpd) |
119 | f6f980d5 | Dimitris Aragiorgis | ebtables -A $TO -p ipv4 --ip-protocol=udp --ip-destination-port=68 -j ACCEPT |
120 | d2b16e51 | Dimitris Aragiorgis | if [ "$TYPE" == "private" ]; then |
121 | 6e257ba8 | Dimitris Aragiorgis | if [ ! -z "$GATEWAY" -a $ENABLE_MASQ ]; then |
122 | 7d163a24 | Dimitris Aragiorgis | # allow packets from/to router (for masquerading |
123 | d2b16e51 | Dimitris Aragiorgis | ebtables -A $TO -s $ROUTER_MAC -j ACCEPT |
124 | d2b16e51 | Dimitris Aragiorgis | ebtables -A INPUT -i $TAP -j $FROM |
125 | 7d163a24 | Dimitris Aragiorgis | ebtables -A OUTPUT -o $TAP -j $TO |
126 | cf51ea5b | Dimitris Aragiorgis | fi |
127 | d2b16e51 | Dimitris Aragiorgis | # allow only packets from the same mac prefix |
128 | d2b16e51 | Dimitris Aragiorgis | ebtables -A $TO -s \! $MAC/$MAC_MASK -j DROP |
129 | cf51ea5b | Dimitris Aragiorgis | fi |
130 | cf51ea5b | Dimitris Aragiorgis | } |
131 | cf51ea5b | Dimitris Aragiorgis | |
132 | cf51ea5b | Dimitris Aragiorgis | |
133 | 2b9e52e1 | Dimitris Aragiorgis | function setup_nfdhcpd { |
134 | 2b9e52e1 | Dimitris Aragiorgis | umask 022 |
135 | 2b9e52e1 | Dimitris Aragiorgis | FILE=$NFDHCPD_STATE_DIR/$INTERFACE |
136 | 2b9e52e1 | Dimitris Aragiorgis | #IFACE is the interface from which the packet seems to arrive |
137 | 2b9e52e1 | Dimitris Aragiorgis | #needed in bridged mode where the packets seems to arrive from the |
138 | 2b9e52e1 | Dimitris Aragiorgis | #bridge and not from the tap |
139 | 2b9e52e1 | Dimitris Aragiorgis | cat >$FILE <<EOF |
140 | 2b9e52e1 | Dimitris Aragiorgis | INDEV=$1 |
141 | 2b9e52e1 | Dimitris Aragiorgis | IP=$IP |
142 | 2b9e52e1 | Dimitris Aragiorgis | MAC=$MAC |
143 | 2b9e52e1 | Dimitris Aragiorgis | HOSTNAME=$INSTANCE |
144 | 2b9e52e1 | Dimitris Aragiorgis | TAGS="$TAGS" |
145 | 2b9e52e1 | Dimitris Aragiorgis | GATEWAY=$GATEWAY |
146 | 2b9e52e1 | Dimitris Aragiorgis | SUBNET=$SUBNET |
147 | 2b9e52e1 | Dimitris Aragiorgis | GATEWAY6=$GATEWAY6 |
148 | 2b9e52e1 | Dimitris Aragiorgis | SUBNET6=$SUBNET6 |
149 | 2b9e52e1 | Dimitris Aragiorgis | EUI64=$($MAC2EUI64 $MAC $SUBNET6 2>/dev/null) |
150 | 2b9e52e1 | Dimitris Aragiorgis | EOF |
151 | 2b9e52e1 | Dimitris Aragiorgis | |
152 | 2b9e52e1 | Dimitris Aragiorgis | } |
153 | 2b9e52e1 | Dimitris Aragiorgis | |
154 | cf51ea5b | Dimitris Aragiorgis | |
155 | d2b16e51 | Dimitris Aragiorgis | DEFAULT=/etc/default/snf-network |
156 | d2b16e51 | Dimitris Aragiorgis | source $DEFAULT |
157 | d2b16e51 | Dimitris Aragiorgis | source $CONF |
158 | cf51ea5b | Dimitris Aragiorgis | |
159 | d2b16e51 | Dimitris Aragiorgis | NODEINFRAFILE=$SHAREDDIR/infra/$(hostname) |
160 | d2b16e51 | Dimitris Aragiorgis | |
161 | d2b16e51 | Dimitris Aragiorgis | if [ -e "$NODEINFRAFILE" ]; then |
162 | d2b16e51 | Dimitris Aragiorgis | source $NODEINFRAFILE |
163 | d2b16e51 | Dimitris Aragiorgis | fi |
164 | d2b16e51 | Dimitris Aragiorgis | |
165 | 6e257ba8 | Dimitris Aragiorgis | CLUSTERINFRAFILE=$SHAREDDIR/infra/cluster |
166 | 6e257ba8 | Dimitris Aragiorgis | |
167 | 6e257ba8 | Dimitris Aragiorgis | if [ -e "$CLUSTERINFRAFILE" ]; then |
168 | 6e257ba8 | Dimitris Aragiorgis | source $CLUSTERINFRAFILE |
169 | 6e257ba8 | Dimitris Aragiorgis | fi |
170 | d2b16e51 | Dimitris Aragiorgis | |
171 | d2b16e51 | Dimitris Aragiorgis | NETFILE=$SHAREDDIR/networks/$NETWORK |
172 | 6e257ba8 | Dimitris Aragiorgis | |
173 | d2b16e51 | Dimitris Aragiorgis | if [ -e "$NETFILE" ]; then |
174 | d2b16e51 | Dimitris Aragiorgis | source $NETFILE |
175 | d2b16e51 | Dimitris Aragiorgis | fi |
176 | cf51ea5b | Dimitris Aragiorgis | |
177 | 2b9e52e1 | Dimitris Aragiorgis | |
178 | 2b9e52e1 | Dimitris Aragiorgis | TABLE=rt_$NETWORK |
179 | 2b9e52e1 | Dimitris Aragiorgis | clear_routed_setup_ipv4 > /dev/null 2>&1 |
180 | 2b9e52e1 | Dimitris Aragiorgis | clear_routed_setup_ipv6 > /dev/null 2>&1 |
181 | 2b9e52e1 | Dimitris Aragiorgis | clear_routed_setup_firewall > /dev/null 2>&1 |
182 | 2b9e52e1 | Dimitris Aragiorgis | clear_ebtables > /dev/null 2>&1 |
183 | 2b9e52e1 | Dimitris Aragiorgis | |
184 | cf51ea5b | Dimitris Aragiorgis | if [ "$MODE" = "routed" ]; then |
185 | cf51ea5b | Dimitris Aragiorgis | # use a constant predefined MAC address for the tap |
186 | cf51ea5b | Dimitris Aragiorgis | ip link set $INTERFACE addr $TAP_CONSTANT_MAC |
187 | cf51ea5b | Dimitris Aragiorgis | # bring the tap up |
188 | cf51ea5b | Dimitris Aragiorgis | ifconfig $INTERFACE 0.0.0.0 up |
189 | cf51ea5b | Dimitris Aragiorgis | |
190 | cf51ea5b | Dimitris Aragiorgis | # Drop unicast BOOTP/DHCP packets |
191 | cf51ea5b | Dimitris Aragiorgis | iptables -A FORWARD -i $INTERFACE -p udp --dport 67 -j DROP |
192 | cf51ea5b | Dimitris Aragiorgis | |
193 | f8e790c4 | Dimitris Aragiorgis | routed_setup_ipv4 > /dev/null 2>&1 |
194 | f8e790c4 | Dimitris Aragiorgis | routed_setup_ipv6 > /dev/null 2>&1 |
195 | 2b9e52e1 | Dimitris Aragiorgis | routed_setup_firewall > /dev/null 2>&1 |
196 | 7d163a24 | Dimitris Aragiorgis | setup_nfdhcpd $INTERFACE |
197 | cf51ea5b | Dimitris Aragiorgis | elif [ "$MODE" = "bridged" ]; then |
198 | cf51ea5b | Dimitris Aragiorgis | ifconfig $INTERFACE 0.0.0.0 up |
199 | cf51ea5b | Dimitris Aragiorgis | brctl addif $BRIDGE $INTERFACE |
200 | 7d163a24 | Dimitris Aragiorgis | setup_nfdhcpd $BRIDGE |
201 | 2b9e52e1 | Dimitris Aragiorgis | setup_ebtables > /dev/null 2>&1 |
202 | d2b16e51 | Dimitris Aragiorgis | fi |