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#!/bin/ash
# This scripts runs as root and prepares the configuration
# for the dnbd3 server (...)
# Creates the DNBD3 server configuration under DNBD3_CONF_DIR
DNBD3_CONF_DIR="/etc/dnbd3"
if ! mkdir -p "${DNBD3_CONF_DIR}"; then
slxlog -s -e "dnbd3-setup" "Failed to create '${DNBD3_CONF_DIR}'."
exit 1
fi
# Checks if the persistent partition (MBR-ID 45 / GPT-LABEL OpenSLX-ID45)
# is present, exits if not.
DNBD3_BASE_DIR="/opt/openslx/persistent"
if grep -q '^/dev/.* '"${DNBD3_BASE_DIR}"' .*rw' /proc/mounts \
&& [ -k "${DNBD3_BASE_DIR}/data" ]; then
# setup_partitions creates a data folder in ID45
DNBD3_BASE_DIR="${DNBD3_BASE_DIR}/data"
else
# try /tmp fallback
DNBD3_BASE_DIR="/tmp"
if ! grep -q '^/dev/.* '"${DNBD3_BASE_DIR}"' .*rw' /proc/mounts ; then
# no sane fallback possible, exit 1
slxlog -s -e "dnbd3-setup" \
"Neither the persistent part (ID45) nor /tmp are available for dnbd3-server!"
exit 1
fi
fi
# now try to create the actual folder used by the server
DNBD3_DATA_DIR="${DNBD3_BASE_DIR}/dnbd3"
if ! mkdir -p "${DNBD3_DATA_DIR}"; then
i=0
while [ $i -lt 10 ]; do
mkdir -p "${DNBD3_BASE_DIR}/dnbd3.$i" && \
DNBD3_DATA_DIR="${DNBD3_BASE_DIR}/dnbd3.$i" && break
done
fi
if [ ! -d "${DNBD3_DATA_DIR}" ]; then
slxlog -s -e "dnbd3-setup" "Failed to create '${DNBD3_BASE_DIR}.0-$i]'!"
exit 1
fi
if ! chown dnbd3:dnbd3 "${DNBD3_DATA_DIR}"; then
slxlog -s -e "dnbd3-setup" "Failed to chown '${DNBD3_DATA_DIR}' to dnbd3."
exit 1
fi
# Done with sanity checks, now create configs: server.conf & alt-servers
# Using the information given by the server in /opt/openslx/config
. /opt/openslx/config
DNBD3_PORT=5003
# Refer to http://git.openslx.org/dnbd3.git/tree/conf for configuration options
cat << EOF > "${DNBD3_CONF_DIR}/server.conf"
[dnbd3]
listenPort=${DNBD3_PORT}
basePath=${DNBD3_DATA_DIR}
serverPenalty=100000
clientPenalty=0
isProxy=true
backgroundReplication=false
removeMissingImages=false
uplinkTimeout=1250
clientTimeout=15000
[logging]
consoleMask=ERROR WARNING
EOF
# helper to echo given list of IPs to ${DNBD3_CONF_DIR}/alt-servers
# optionally takes a single char prefix as first param and
# adds it to the IP (for private dnbd3 servers)
# Also sets FOUND_SAT if satellite IP was seen
add_alt_server() {
local PRE=
[ "x$1" = "x-" ] && PRE='-' && shift
for ALT in $@; do
echo "${PRE}${ALT}" >> "${DNBD3_CONF_DIR}/alt-servers"
[ "x${ALT}" = "x${SLX_PXE_SERVER_IP}" ] && FOUND_SAT="oui"
done
return 0
}
FOUND_SAT=
add_alt_server ${SLX_DNBD3_PUBLIC}
add_alt_server '-' ${SLX_DNBD3_PRIVATE}
# To this day, only the sat IP is in SLX_KCL_SERVERS afaik
[ -n "${FOUND_SAT}" ] && add_alt_server ${SLX_KCL_SERVERS}
# now create iptables helper rules
DNBD3_IPTABLES_CONF="/opt/openslx/iptables/rules.d/99-dnbd3"
echo '#!/bin/ash' >> "${DNBD3_IPTABLES_CONF}"
for CIDR in ${SLX_DNBD3_WHITELIST}; do
echo "iptables -w -w -I ipt-helper-INPUT 1 -i br0 -p tcp -s ${CIDR} --dport ${DNBD3_PORT} -j ACCEPT"
done >> "${DNBD3_IPTABLES_CONF}"
[ -n "${SLX_DNBD3_WHITELIST}" ] && \
echo "iptables -w -w -I ipt-helper-INPUT 1 -i br0 -p tcp --dport ${DNBD3_PORT} -j REJECT" >> "${DNBD3_IPTABLES_CONF}"
chmod +x "${DNBD3_IPTABLES_CONF}"
return 0
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