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ctdb-scripts: Move interface monitoring code to functions file

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Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This commit is contained in:
Martin Schwenke 2015-12-18 15:43:33 +11:00 committed by Amitay Isaacs
parent fe64e76aa0
commit 85316c0415
2 changed files with 94 additions and 91 deletions
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91
ctdb/config/events.d/10.interface
View File

@ -52,97 +52,6 @@ get_all_interfaces ()
all_interfaces=$(echo $all_interfaces $ctdb_ifaces | tr ' ' '\n' | sort -u)
}
# If the interface is a virtual one (e.g. VLAN) then get the
# underlying interface
interface_get_real ()
{
# Output of "ip link show <iface>"
_iface_info="$1"
# Extract the full interface description to see if it is a VLAN
_t=$(echo "$_iface_info" |
awk 'NR == 1 { iface = $2; sub(":$", "", iface) ; \
print iface }')
case "$_t" in
*@*)
# VLAN: use the underlying interface, after the '@'
echo "${_t##*@}"
;;
*)
# Not a regular VLAN. For backward compatibility, assume
# there is some other sort of VLAN that doesn't have the
# '@' in the output and only use what is before a '.'. If
# there is no '.' then this will be the whole interface
# name.
echo "${_t%%.*}"
esac
}
# Check whether an interface is operational
interface_monitor ()
{
_iface="$1"
_iface_info=$(ip link show "$_iface" 2>&1) || {
echo "ERROR: Monitored interface ${_iface} does not exist"
return 1
}
# If the interface is a virtual one (e.g. VLAN) then get the
# underlying interface.
_realiface=$(interface_get_real "$_iface_info")
if _bi=$(get_proc "net/bonding/${_realiface}" 2>/dev/null) ; then
# This is a bond: various monitoring strategies
echo "$_bi" | grep -q 'Currently Active Slave: None' && {
echo "ERROR: No active slaves for bond device ${_realiface}"
return 1
}
echo "$_bi" | grep -q '^MII Status: up' || {
echo "ERROR: public network interface ${_realiface} is down"
return 1
}
echo "$_bi" | grep -q '^Bonding Mode: IEEE 802.3ad Dynamic link aggregation' && {
# This works around a bug in the driver where the
# overall bond status can be up but none of the actual
# physical interfaces have a link.
echo "$_bi" | grep 'MII Status:' | tail -n +2 | grep -q '^MII Status: up' || {
echo "ERROR: No active slaves for 802.ad bond device ${_realiface}"
return 1
}
}
return 0
else
# Not a bond
case "$_iface" in
lo*)
# loopback is always working
return 0
;;
ib*)
# we don't know how to test ib links
return 0
;;
*)
ethtool "$_iface" | grep -q 'Link detected: yes' || {
# On some systems, this is not successful when a
# cable is plugged but the interface has not been
# brought up previously. Bring the interface up
# and try again...
ip link set "$_iface" up
ethtool "$_iface" | grep -q 'Link detected: yes' || {
echo "ERROR: No link on the public network interface ${_iface}"
return 1
}
}
return 0
;;
esac
fi
}
monitor_interfaces()
{
get_all_interfaces

94
ctdb/config/functions
View File

@ -638,6 +638,100 @@ flush_route_cache ()
set_proc_maybe sys/net/ipv6/route/flush 1
}
########################################################
# Interface monitoring
# If the interface is a virtual one (e.g. VLAN) then get the
# underlying interface
interface_get_real ()
{
# Output of "ip link show <iface>"
_iface_info="$1"
# Extract the full interface description to see if it is a VLAN
_t=$(echo "$_iface_info" |
awk 'NR == 1 { iface = $2; sub(":$", "", iface) ; \
print iface }')
case "$_t" in
*@*)
# VLAN: use the underlying interface, after the '@'
echo "${_t##*@}"
;;
*)
# Not a regular VLAN. For backward compatibility, assume
# there is some other sort of VLAN that doesn't have the
# '@' in the output and only use what is before a '.'. If
# there is no '.' then this will be the whole interface
# name.
echo "${_t%%.*}"
esac
}
# Check whether an interface is operational
interface_monitor ()
{
_iface="$1"
_iface_info=$(ip link show "$_iface" 2>&1) || {
echo "ERROR: Monitored interface ${_iface} does not exist"
return 1
}
# If the interface is a virtual one (e.g. VLAN) then get the
# underlying interface.
_realiface=$(interface_get_real "$_iface_info")
if _bi=$(get_proc "net/bonding/${_realiface}" 2>/dev/null) ; then
# This is a bond: various monitoring strategies
echo "$_bi" | grep -q 'Currently Active Slave: None' && {
echo "ERROR: No active slaves for bond device ${_realiface}"
return 1
}
echo "$_bi" | grep -q '^MII Status: up' || {
echo "ERROR: public network interface ${_realiface} is down"
return 1
}
echo "$_bi" | grep -q '^Bonding Mode: IEEE 802.3ad Dynamic link aggregation' && {
# This works around a bug in the driver where the
# overall bond status can be up but none of the actual
# physical interfaces have a link.
echo "$_bi" | grep 'MII Status:' | tail -n +2 | grep -q '^MII Status: up' || {
echo "ERROR: No active slaves for 802.ad bond device ${_realiface}"
return 1
}
}
return 0
else
# Not a bond
case "$_iface" in
lo*)
# loopback is always working
return 0
;;
ib*)
# we don't know how to test ib links
return 0
;;
*)
ethtool "$_iface" | grep -q 'Link detected: yes' || {
# On some systems, this is not successful when a
# cable is plugged but the interface has not been
# brought up previously. Bring the interface up
# and try again...
ip link set "$_iface" up
ethtool "$_iface" | grep -q 'Link detected: yes' || {
echo "ERROR: No link on the public network interface ${_iface}"
return 1
}
}
return 0
;;
esac
fi
}
########################################################
# Simple counters
_ctdb_counter_common () {