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[DHCP relay]: Wait for VLAN interface to come up before starting DHCP relay #399

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Merged
jleveque merged 1 commit into from
Mar 16, 2017
Merged

[DHCP relay]: Wait for VLAN interface to come up before starting DHCP relay #399

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7 changes: 4 additions & 3 deletions dockers/docker-dhcp-relay/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -15,8 +15,9 @@ RUN rm -rf /debs

COPY ["isc-dhcp-relay.j2", "/usr/share/sonic/templates/"]
COPY ["config.sh", "/usr/bin/"]
COPY ["start.sh", "/usr/bin/"]

ENTRYPOINT /usr/bin/config.sh \
&& service rsyslog start \
&& service isc-dhcp-relay start \
ENTRYPOINT /usr/bin/config.sh \
&& service rsyslog start \
&& /usr/bin/start.sh \
&& /bin/bash
12 changes: 12 additions & 0 deletions dockers/docker-dhcp-relay/start.sh
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@@ -0,0 +1,12 @@
#!/bin/bash

VLAN_IFACE_NAME=`sonic-cfggen -m /etc/sonic/minigraph.xml -v "minigraph_vlan_interfaces[0]['name']"`

# Wait for the VLAN to come up (i.e., 'ip link show' returns 0)
until ip link show $VLAN_IFACE_NAME > /dev/null 2>&1; do
sleep 1
done

# Start the DHCP relay
service isc-dhcp-relay start

2 changes: 1 addition & 1 deletion files/build_templates/dhcp_relay.service.j2
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@@ -1,7 +1,7 @@
[Unit]
Description=DHCP relay container
Requires=docker.service
After=docker.service
After=interfaces-config.service

[Service]
User={{ sonicadmin_user }}
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