diff --git a/heartbeat/IPaddr2 b/heartbeat/IPaddr2 index 79e19230f..b36426e6a 100755 --- a/heartbeat/IPaddr2 +++ b/heartbeat/IPaddr2 @@ -1,889 +1,889 @@ #!/bin/sh # # $Id: IPaddr2.in,v 1.24 2006/08/09 13:01:54 lars Exp $ # # OCF Resource Agent compliant IPaddr2 script. # # Based on work by Tuomo Soini, ported to the OCF RA API by Lars # Marowsky-Brée. Implements Cluster Alias IP functionality too. # # Cluster Alias IP cleanup, fixes and testing by Michael Schwartzkopff # # # Copyright (c) 2003 Tuomo Soini # Copyright (c) 2004-2006 SUSE LINUX AG, Lars Marowsky-Brée # All Rights Reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License # along with this program; if not, write the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. # # # TODO: # - There ought to be an ocf_run_cmd function which does all logging, # timeout handling etc for us # - Make this the standard IP address agent on Linux; the other # platforms simply should ignore the additional parameters OR can use # the legacy heartbeat resource script... # - Check LVS <-> clusterip incompatibilities. # # OCF parameters are as below # OCF_RESKEY_ip # OCF_RESKEY_broadcast # OCF_RESKEY_nic # OCF_RESKEY_cidr_netmask # OCF_RESKEY_iflabel # OCF_RESKEY_mac # OCF_RESKEY_clusterip_hash # OCF_RESKEY_arp_interval # OCF_RESKEY_arp_count # OCF_RESKEY_arp_bg # OCF_RESKEY_arp_mac # # OCF_RESKEY_CRM_meta_clone # OCF_RESKEY_CRM_meta_clone_max ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs # Defaults OCF_RESKEY_lvs_support_default=false OCF_RESKEY_clusterip_hash_default="sourceip-sourceport" OCF_RESKEY_unique_clone_address_default=false OCF_RESKEY_arp_interval_default=200 OCF_RESKEY_arp_count_default=5 OCF_RESKEY_arp_bg_default=true OCF_RESKEY_arp_mac_default="ffffffffffff" : ${OCF_RESKEY_lvs_support=${OCF_RESKEY_lvs_support_default}} : ${OCF_RESKEY_clusterip_hash=${OCF_RESKEY_clusterip_hash_default}} : ${OCF_RESKEY_unique_clone_address=${OCF_RESKEY_unique_clone_address_default}} : ${OCF_RESKEY_arp_interval=${OCF_RESKEY_arp_interval_default}} : ${OCF_RESKEY_arp_count=${OCF_RESKEY_arp_count_default}} : ${OCF_RESKEY_arp_bg=${OCF_RESKEY_arp_bg_default}} : ${OCF_RESKEY_arp_mac=${OCF_RESKEY_arp_mac_default}} ####################################################################### SENDARP=$HA_BIN/send_arp FINDIF=$HA_BIN/findif VLDIR=$HA_RSCTMP SENDARPPIDDIR=$HA_RSCTMP CIP_lockfile=$HA_RSCTMP/IPaddr2-CIP-${OCF_RESKEY_ip} ####################################################################### meta_data() { cat < 1.0 This Linux-specific resource manages IP alias IP addresses. It can add an IP alias, or remove one. In addition, it can implement Cluster Alias IP functionality if invoked as a clone resource. Manages virtual IPv4 addresses (Linux specific version) The IPv4 address to be configured in dotted quad notation, for example "192.168.1.1". IPv4 address The base network interface on which the IP address will be brought online. If left empty, the script will try and determine this from the routing table. Do NOT specify an alias interface in the form eth0:1 or anything here; rather, specify the base interface only. Prerequisite: There must be at least one static IP address, which is not managed by the cluster, assigned to the network interface. If you can not assign any static IP address on the interface, modify this kernel parameter: sysctl -w net.ipv4.conf.all.promote_secondaries=1 (or per device) Network interface The netmask for the interface in CIDR format (e.g., 24 and not 255.255.255.0) If unspecified, the script will also try to determine this from the routing table. CIDR netmask Broadcast address associated with the IP. If left empty, the script will determine this from the netmask. Broadcast address You can specify an additional label for your IP address here. This label is appended to your interface name. If a label is specified in nic name, this parameter has no effect. Interface label Enable support for LVS Direct Routing configurations. In case a IP address is stopped, only move it to the loopback device to allow the local node to continue to service requests, but no longer advertise it on the network. Enable support for LVS DR Set the interface MAC address explicitly. Currently only used in case of the Cluster IP Alias. Leave empty to chose automatically. Cluster IP MAC address Specify the hashing algorithm used for the Cluster IP functionality. Cluster IP hashing function If true, add the clone ID to the supplied value of ip to create a unique address to manage Create a unique address for cloned instances Specify the interval between unsolicited ARP packets in milliseconds. ARP packet interval in ms Number of unsolicited ARP packets to send. ARP packet count Whether or not to send the arp packets in the background. ARP from background -MAC address to send the ARP packets too. +MAC address to send the ARP packets to. You really shouldn't be touching this. ARP MAC Flush the routing table on stop. This is for applications which use the cluster IP address and which run on the same physical host that the IP address lives on. The Linux kernel may force that application to take a shortcut to the local loopback interface, instead of the interface the address is really bound to. Under those circumstances, an application may, somewhat unexpectedly, continue to use connections for some time even after the IP address is deconfigured. Set this parameter in order to immediately disable said shortcut when the IP address goes away. Flush kernel routing table on stop END exit $OCF_SUCCESS } ip_init() { local rc if [ X`uname -s` != "XLinux" ]; then ocf_log err "IPaddr2 only supported Linux." exit $OCF_ERR_INSTALLED fi if [ X"$OCF_RESKEY_ip" = "X" ]; then ocf_log err "IP address (the ip parameter) is mandatory" exit $OCF_ERR_CONFIGURED fi if case $__OCF_ACTION in start|stop) ocf_is_root;; *) true;; esac then : YAY! else ocf_log err "You must be root for $__OCF_ACTION operation." exit $OCF_ERR_PERM fi BASEIP="$OCF_RESKEY_ip" BRDCAST="$OCF_RESKEY_broadcast" NIC="$OCF_RESKEY_nic" # Note: We had a version out there for a while which used # netmask instead of cidr_netmask. Don't remove this aliasing code! if [ ! -z "$OCF_RESKEY_netmask" -a -z "$OCF_RESKEY_cidr_netmask" ] then OCF_RESKEY_cidr_netmask=$OCF_RESKEY_netmask export OCF_RESKEY_cidr_netmask fi NETMASK="$OCF_RESKEY_cidr_netmask" IFLABEL="$OCF_RESKEY_iflabel" IF_MAC="$OCF_RESKEY_mac" IP_INC_GLOBAL=${OCF_RESKEY_CRM_meta_clone_max:-1} IP_INC_NO=`expr ${OCF_RESKEY_CRM_meta_clone:-0} + 1` if ocf_is_true ${OCF_RESKEY_lvs_support} && [ $IP_INC_GLOBAL -gt 1 ]; then ocf_log err "LVS and load sharing do not go together well" exit $OCF_ERR_CONFIGURED fi if ocf_is_decimal "$IP_INC_GLOBAL" && [ $IP_INC_GLOBAL -gt 0 ]; then : else ocf_log err "Invalid OCF_RESKEY_incarnations_max_global [$IP_INC_GLOBAL], should be positive integer" exit $OCF_ERR_CONFIGURED fi # $FINDIF takes its parameters from the environment # NICINFO=`$FINDIF -C` rc=$? if [ $rc -eq 0 ] then NICINFO=`echo $NICINFO | sed -e 's/netmask\ //;s/broadcast\ //'` NIC=`echo "$NICINFO" | cut -d" " -f1` NETMASK=`echo "$NICINFO" | cut -d" " -f2` BRDCAST=`echo "$NICINFO" | cut -d" " -f3` else # findif couldn't find the interface if ocf_is_probe; then ocf_log info "[$FINDIF -C] failed" exit $OCF_NOT_RUNNING elif [ "$__OCF_ACTION" = stop ]; then ocf_log warn "[$FINDIF -C] failed" exit $OCF_SUCCESS else ocf_log err "[$FINDIF -C] failed" exit $rc fi fi SENDARPPIDFILE="$SENDARPPIDDIR/send_arp-$OCF_RESKEY_ip" case $NIC in *:*) IFLABEL=$NIC NIC=`echo $NIC | sed 's/:.*//'` ;; *) if [ -n "$IFLABEL" ]; then IFLABEL=${NIC}:${IFLABEL} fi ;; esac if [ "$IP_INC_GLOBAL" -gt 1 ] && ! ocf_is_true "$OCF_RESKEY_unique_clone_address"; then IP_CIP="yes" IP_CIP_HASH="${OCF_RESKEY_clusterip_hash}" if [ -z "$IF_MAC" ]; then # Choose a MAC # 1. Concatenate some input together # 2. This doesn't need to be a cryptographically # secure hash. # 3. Drop everything after the first 6 octets (12 chars) # 4. Delimit the octets with ':' # 5. Make sure the first octet is odd, # so the result is a multicast MAC IF_MAC=`echo $OCF_RESKEY_ip $NETMASK $BRDCAST | \ md5sum | \ sed -e 's#\(............\).*#\1#' \ -e 's#..#&:#g; s#:$##' \ -e 's#^\(.\)[02468aAcCeE]#\11#'` fi IP_CIP_FILE="/proc/net/ipt_CLUSTERIP/$OCF_RESKEY_ip" fi } # # Find out which interface serves the given IP address # The argument is an IP address, and its output # is an interface name (e.g., "eth0"). # find_interface() { # # List interfaces but exclude FreeS/WAN ipsecN virtual interfaces # local iface=`$IP2UTIL -o -f inet addr show | grep "\ $OCF_RESKEY_ip/$NETMASK" \ | cut -d ' ' -f2 | grep -v '^ipsec[0-9][0-9]*$'` echo $iface return 0 } # # Delete an interface # delete_interface () { ipaddr="$1" iface="$2" netmask="$3" CMD="$IP2UTIL -f inet addr delete $ipaddr/$netmask dev $iface" ocf_run $CMD || return $OCF_ERR_GENERIC if ocf_is_true $OCF_RESKEY_flush_routes; then ocf_run $IP2UTIL route flush cache fi return $OCF_SUCCESS } # # Add an interface # add_interface () { local cmd msg ipaddr netmask broadcast iface label ipaddr="$1" netmask="$2" broadcast="$3" iface="$4" label="$5" cmd="$IP2UTIL -f inet addr add $ipaddr/$netmask brd $broadcast dev $iface" msg="Adding IPv4 address $ipaddr/$netmask with broadcast address $broadcast to device $iface" if [ ! -z "$label" ]; then cmd="$cmd label $label" msg="${msg} (with label $label)" fi ocf_log info "$msg" ocf_run $cmd || return $OCF_ERR_GENERIC msg="Bringing device $iface up" cmd="$IP2UTIL link set $iface up" ocf_log info "$msg" ocf_run $cmd || return $OCF_ERR_GENERIC return $OCF_SUCCESS } # # Delete a route # delete_route () { prefix="$1" iface="$2" CMD="$IP2UTIL route delete $prefix dev $iface" ocf_log info "$CMD" $CMD return $? } # On Linux systems the (hidden) loopback interface may # conflict with the requested IP address. If so, this # unoriginal code will remove the offending loopback address # and save it in VLDIR so it can be added back in later # when the IPaddr is released. # # TODO: This is very ugly and should be controlled by an additional # instance parameter. Or even: multi-state, with the IP only being # "active" on the master!? # remove_conflicting_loopback() { ipaddr="$1" netmask="$2" broadcast="$3" ifname="$4" ocf_log info "Removing conflicting loopback $ifname." if echo "$ipaddr $netmask $broadcast $ifname" > "$VLDIR/$ipaddr" then : Saved loopback information in $VLDIR/$ipaddr else ocf_log err "Could not save conflicting loopback $ifname." \ "it will not be restored." fi delete_interface "$ipaddr" "$ifname" "$netmask" # Forcibly remove the route (if it exists) to the loopback. delete_route "$ipaddr" "$ifname" } # # On Linux systems the (hidden) loopback interface may # need to be restored if it has been taken down previously # by remove_conflicting_loopback() # restore_loopback() { ipaddr="$1" if [ -s "$VLDIR/$ipaddr" ]; then ifinfo=`cat "$VLDIR/$ipaddr"` ocf_log info "Restoring loopback IP Address " \ "$ifinfo." add_interface $ifinfo rm -f "$VLDIR/$ipaddr" fi } # # Run send_arp to note peers about new mac address # run_send_arp() { ARGS="-i $OCF_RESKEY_arp_interval -r $OCF_RESKEY_arp_count -p $SENDARPPIDFILE $NIC $OCF_RESKEY_ip auto not_used not_used" if [ "x$IP_CIP" = "xyes" ] ; then if [ x = "x$IF_MAC" ] ; then MY_MAC=auto else MY_MAC=`echo ${IF_MAC} | sed -e 's/://g'` fi ARGS="-i $OCF_RESKEY_arp_interval -r $OCF_RESKEY_arp_count -p $SENDARPPIDFILE $NIC $OCF_RESKEY_ip $MY_MAC not_used not_used" fi ocf_log info "$SENDARP $ARGS" if ocf_is_true $OCF_RESKEY_arp_bg; then ($SENDARP $ARGS || ocf_log err "Could not send gratuitous arps" &) >&2 else $SENDARP $ARGS || ocf_log err "Could not send gratuitous arps" fi } # # Run ipoibarping to note peers about new Infiniband address # run_send_ib_arp() { ARGS="-q -c $OCF_RESKEY_arp_count -U -I $NIC $OCF_RESKEY_ip" ocf_log info "ipoibarping $ARGS" if ocf_is_true $OCF_RESKEY_arp_bg; then (ipoibarping $ARGS || ocf_log err "Could not send gratuitous arps" &) >&2 else ipoibarping $ARGS || ocf_log err "Could not send gratuitous arps" fi } # Do we already serve this IP address? # # returns: # ok = served (for CIP: + hash bucket) # partial = served and no hash bucket (CIP only) # partial2 = served and no CIP iptables rule # no = nothing # ip_served() { if [ -z "$NIC" ]; then # no nic found or specified echo "no" return 0 fi cur_nic="`find_interface $OCF_RESKEY_ip`" if [ -z "$cur_nic" ]; then echo "no" return 0 fi if [ -z "$IP_CIP" ]; then case $cur_nic in lo*) if ocf_is_true ${OCF_RESKEY_lvs_support}; then echo "no" return 0 fi ;; esac echo "ok" return 0 fi # Special handling for the CIP: if [ ! -e $IP_CIP_FILE ]; then echo "partial2" return 0 fi if egrep -q "(^|,)${IP_INC_NO}(,|$)" $IP_CIP_FILE ; then echo "ok" return 0 else echo "partial" return 0 fi exit $OCF_ERR_GENERIC } ####################################################################### ip_usage() { cat <$IP_CIP_FILE fi if [ "$ip_status" = "no" ]; then if ocf_is_true ${OCF_RESKEY_lvs_support}; then case `find_interface $OCF_RESKEY_ip` in lo*) remove_conflicting_loopback $OCF_RESKEY_ip 32 255.255.255.255 lo ;; esac fi add_interface $OCF_RESKEY_ip $NETMASK $BRDCAST $NIC $IFLABEL if [ $? -ne 0 ]; then ocf_log err "$CMD failed." exit $OCF_ERR_GENERIC fi fi case $NIC in lo*) : no need to run send_arp on loopback ;; ib*) run_send_ib_arp ;; *) if [ -x $SENDARP ]; then run_send_arp fi ;; esac exit $OCF_SUCCESS } ip_stop() { local ip_del_if="yes" if [ -n "$IP_CIP" ]; then # Cluster IPs need special processing when the last bucket # is removed from the node... take a lock to make sure only one # process executes that code ocf_take_lock $CIP_lockfile ocf_release_lock_on_exit $CIP_lockfile fi if [ -f "$SENDARPPIDFILE" ] ; then kill `cat "$SENDARPPIDFILE"` if [ $? -ne 0 ]; then ocf_log warn "Could not kill previously running send_arp for $OCF_RESKEY_ip" else ocf_log info "killed previously running send_arp for $OCF_RESKEY_ip" rm -f "$SENDARPPIDFILE" fi fi local ip_status=`ip_served` ocf_log info "IP status = $ip_status, IP_CIP=$IP_CIP" if [ $ip_status = "no" ]; then : Requested interface not in use exit $OCF_SUCCESS fi if [ -n "$IP_CIP" ] && [ $ip_status != "partial2" ]; then if [ $ip_status = "partial" ]; then exit $OCF_SUCCESS fi echo "-$IP_INC_NO" >$IP_CIP_FILE if [ "x$(cat $IP_CIP_FILE)" = "x" ]; then ocf_log info $OCF_RESKEY_ip, $IP_CIP_HASH i=1 while [ $i -le $IP_INC_GLOBAL ]; do ocf_log info $i $IPTABLES -D INPUT -d $OCF_RESKEY_ip -i $NIC -j CLUSTERIP \ --new \ --clustermac $IF_MAC \ --total-nodes $IP_INC_GLOBAL \ --local-node $i \ --hashmode $IP_CIP_HASH i=`expr $i + 1` done else ip_del_if="no" fi fi if [ "$ip_del_if" = "yes" ]; then delete_interface $OCF_RESKEY_ip $NIC $NETMASK if [ $? -ne 0 ]; then exit $OCF_ERR_GENERIC fi if ocf_is_true ${OCF_RESKEY_lvs_support}; then restore_loopback "$OCF_RESKEY_ip" fi fi exit $OCF_SUCCESS } ip_monitor() { # TODO: Implement more elaborate monitoring like checking for # interface health maybe via a daemon like FailSafe etc... local ip_status=`ip_served` case $ip_status in ok) return $OCF_SUCCESS ;; partial|no|partial2) exit $OCF_NOT_RUNNING ;; *) # Errors on this interface? return $OCF_ERR_GENERIC ;; esac } ip_validate() { check_binary $IP2UTIL IP_CIP= ip_init case "$NIC" in ib*) check_binary ipoibarping ;; esac if [ -n "$IP_CIP" ]; then check_binary $IPTABLES check_binary $MODPROBE fi # $BASEIP, $NETMASK, $NIC , $IP_INC_GLOBAL, and $BRDCAST have been checked within ip_init, # do not bother here. if ocf_is_true "$OCF_RESKEY_unique_clone_address" && ! ocf_is_true "$OCF_RESKEY_CRM_meta_globally_unique"; then ocf_log err "unique_clone_address makes sense only with meta globally_unique set" exit $OCF_ERR_CONFIGURED fi if ocf_is_decimal "$OCF_RESKEY_arp_interval" && [ $OCF_RESKEY_arp_interval -gt 0 ]; then : else ocf_log err "Invalid OCF_RESKEY_arp_interval [$OCF_RESKEY_arp_interval]" exit $OCF_ERR_CONFIGURED fi if ocf_is_decimal "$OCF_RESKEY_arp_count" && [ $OCF_RESKEY_arp_count -gt 0 ]; then : else ocf_log err "Invalid OCF_RESKEY_arp_count [$OCF_RESKEY_arp_count]" exit $OCF_ERR_CONFIGURED fi if [ -n "$IP_CIP" ]; then local valid=1 case $IP_CIP_HASH in sourceip|sourceip-sourceport|sourceip-sourceport-destport) ;; *) ocf_log err "Invalid OCF_RESKEY_clusterip_hash [$IP_CIP_HASH]" exit $OCF_ERR_CONFIGURED ;; esac if ocf_is_true ${OCF_RESKEY_lvs_support}; then ecf_log err "LVS and load sharing not advised to try" exit $OCF_ERR_CONFIGURED fi case $IF_MAC in [0-9a-zA-Z][13579bBdDfF][!0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][!0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][!0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][!0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][!0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z]) ;; *) valid=0 ;; esac if [ $valid -eq 0 ]; then ocf_log err "Invalid IF_MAC [$IF_MAC]" exit $OCF_ERR_CONFIGURED fi fi } if ocf_is_true "$OCF_RESKEY_unique_clone_address"; then prefix=`echo $OCF_RESKEY_ip | awk -F. '{print $1"."$2"."$3}'` suffix=`echo $OCF_RESKEY_ip | awk -F. '{print $4}'` suffix=`expr ${OCF_RESKEY_CRM_meta_clone:-0} + $suffix` OCF_RESKEY_ip="$prefix.$suffix" fi case $__OCF_ACTION in meta-data) meta_data ;; usage|help) ip_usage exit $OCF_SUCCESS ;; esac ip_validate case $__OCF_ACTION in start) ip_start ;; stop) ip_stop ;; status) ip_status=`ip_served` if [ $ip_status = "ok" ]; then echo "running" exit $OCF_SUCCESS else echo "stopped" exit $OCF_NOT_RUNNING fi ;; monitor) ip_monitor ;; validate-all) ;; *) ip_usage exit $OCF_ERR_UNIMPLEMENTED ;; esac