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Merge pull request #2504 from bcambl/ifcfg_con_name

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configure ifcfg network files by connection name when required
pull/2540/head
Dan Schaper 5 years ago committed by GitHub
parent 62459c4f00 14ebb2fb93
commit f7ad489805
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1 changed files with 79 additions and 58 deletions
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automated install/basic-install.sh
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@ -776,77 +776,98 @@ It is also possible to use a DHCP reservation, but if you are going to do that,
fi
}
# dhcpcd is very annoying,
# configure networking via dhcpcd
setDHCPCD() {
# but we can append these lines to dhcpcd.conf to enable a static IP
echo "interface ${PIHOLE_INTERFACE}
static ip_address=${IPV4_ADDRESS}
static routers=${IPv4gw}
static domain_name_servers=127.0.0.1" | tee -a /etc/dhcpcd.conf >/dev/null
# check if the IP is already in the file
if grep -q "${IPV4_ADDRESS}" /etc/dhcpcd.conf; then
printf " %b Static IP already configured\\n" "${INFO}"
# If it's not,
else
# we can append these lines to dhcpcd.conf to enable a static IP
echo "interface ${PIHOLE_INTERFACE}
static ip_address=${IPV4_ADDRESS}
static routers=${IPv4gw}
static domain_name_servers=127.0.0.1" | tee -a /etc/dhcpcd.conf >/dev/null
# Then use the ip command to immediately set the new address
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
# Also give a warning that the user may need to reboot their system
printf " %b Set IP address to %s \\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%/*}"
fi
}
setStaticIPv4() {
# configure networking ifcfg-xxxx file found at /etc/sysconfig/network-scripts/
# this function requires the full path of an ifcfg file passed as an argument
setIFCFG() {
# Local, named variables
local IFCFG_FILE
local IPADDR
local CIDR
IFCFG_FILE=$1
printf -v IPADDR "%s" "${IPV4_ADDRESS%%/*}"
# check if the desired IP is already set
if grep -Eq "${IPADDR}(\\b|\\/)" "${IFCFG_FILE}"; then
printf " %b Static IP already configured\\n" "${INFO}"
# Otherwise,
else
# Put the IP in variables without the CIDR notation
printf -v CIDR "%s" "${IPV4_ADDRESS##*/}"
# Backup existing interface configuration:
cp "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
# Build Interface configuration file using the GLOBAL variables we have
{
echo "# Configured via Pi-hole installer"
echo "DEVICE=$PIHOLE_INTERFACE"
echo "BOOTPROTO=none"
echo "ONBOOT=yes"
echo "IPADDR=$IPADDR"
echo "PREFIX=$CIDR"
echo "GATEWAY=$IPv4gw"
echo "DNS1=$PIHOLE_DNS_1"
echo "DNS2=$PIHOLE_DNS_2"
echo "USERCTL=no"
}> "${IFCFG_FILE}"
# Use ip to immediately set the new address
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
# If NetworkMangler command line interface exists and ready to mangle,
if is_command nmcli && nmcli general status &> /dev/null; then
# Tell NetworkManagler to read our new sysconfig file
nmcli con load "${IFCFG_FILE}" > /dev/null
fi
# Show a warning that the user may need to restart
printf " %b Set IP address to %s\\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%%/*}"
fi
}
setStaticIPv4() {
# Local, named variables
local IFCFG_FILE
local CONNECTION_NAME
# For the Debian family, if dhcpcd.conf exists,
if [[ -f "/etc/dhcpcd.conf" ]]; then
# check if the IP is already in the file
if grep -q "${IPV4_ADDRESS}" /etc/dhcpcd.conf; then
printf " %b Static IP already configured\\n" "${INFO}"
# If it's not,
else
# set it using our function
setDHCPCD
# Then use the ip command to immediately set the new address
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
# Also give a warning that the user may need to reboot their system
printf " %b Set IP address to %s \\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%/*}"
fi
# If it's not Debian, check if it's the Fedora family by checking for the file below
elif [[ -f "/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}" ]];then
# configure networking via dhcpcd
setDHCPCD
return 0
fi
# If a DHCPCD config file was not found, check for an ifcfg config file based on interface name
if [[ -f "/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}" ]];then
# If it exists,
IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}
printf -v IPADDR "%s" "${IPV4_ADDRESS%%/*}"
# check if the desired IP is already set
if grep -Eq "${IPADDR}(\\b|\\/)" "${IFCFG_FILE}"; then
printf " %b Static IP already configured\\n" "${INFO}"
# Otherwise,
else
# Put the IP in variables without the CIDR notation
printf -v CIDR "%s" "${IPV4_ADDRESS##*/}"
# Backup existing interface configuration:
cp "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
# Build Interface configuration file using the GLOBAL variables we have
{
echo "# Configured via Pi-hole installer"
echo "DEVICE=$PIHOLE_INTERFACE"
echo "BOOTPROTO=none"
echo "ONBOOT=yes"
echo "IPADDR=$IPADDR"
echo "PREFIX=$CIDR"
echo "GATEWAY=$IPv4gw"
echo "DNS1=$PIHOLE_DNS_1"
echo "DNS2=$PIHOLE_DNS_2"
echo "USERCTL=no"
}> "${IFCFG_FILE}"
# Use ip to immediately set the new address
ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
# If NetworkMangler command line interface exists and ready to mangle,
if is_command nmcli && nmcli general status &> /dev/null; then
# Tell NetworkManagler to read our new sysconfig file
nmcli con load "${IFCFG_FILE}" > /dev/null
fi
# Show a warning that the user may need to restart
printf " %b Set IP address to %s\\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%%/*}"
setIFCFG "${IFCFG_FILE}"
return 0
fi
# if an ifcfg config does not exists for the interface name, try the connection name via network manager
if is_command nmcli && nmcli general status &> /dev/null; then
CONNECTION_NAME=$(nmcli dev show "${PIHOLE_INTERFACE}" | grep 'GENERAL.CONNECTION' | cut -d: -f2 | sed 's/^System//' | xargs | tr ' ' '_')
if [[ -f "/etc/sysconfig/network-scripts/ifcfg-${CONNECTION_NAME}" ]];then
# If it exists,
IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${CONNECTION_NAME}
setIFCFG "${IFCFG_FILE}"
return 0
fi
# If all that fails,
else
# show an error and exit
printf " %b Warning: Unable to locate configuration file to set static IPv4 address\\n" "${INFO}"
exit 1
fi
# If previous conditions failed, show an error and exit
printf " %b Warning: Unable to locate configuration file to set static IPv4 address\\n" "${INFO}"
exit 1
}
# Check an IP address to see if it is a valid one

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