In a previous mail, I reported some errors with IPv6addr assigning IPv6 to the loopback interface.
I've developed a RA that is able to manage an IPv6 in the main loopback interface of most linux systems: "lo". I put here the code, but you can also found it here: http://pastebin.com/rsqz83V3 http://ral-arturo.blogspot.com/2011/10/ipv6addrlo-asignando-ipv6-interfaz-de.html #!/bin/bash # # OCF Resource Agent compliant resource script. # Arturo Borrero <aborr...@cica.es> || October 2011 # # Based on the anything RA. # # GPLv3 Licensed. You can read the license in # http://www.gnu.org/licenses/gpl-3.0.html # # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat} . ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs # Custom vars: IFCONFIG_BIN="/sbin/ifconfig" GREP_BIN="grep" IFACE="lo" process=$OCF_RESOURCE_INSTANCE ipv6addr=$OCF_RESKEY_ipv6addr cidr_netmask=$OCF_RESKEY_cidr_netmask pidfile=$OCF_RESKEY_pidfile ; [ -z "$pidfile" ] && pidfile=${HA_VARRUN}IPv6addrLO_${process}.pid logfile=$OCF_RESKEY_logfile ; [ -z "$logfile" ] && logfile="/var/log/syslog" errlogfile=$OCF_RESKEY_errlogfile ; [ -z "$errlogfile" ] && errlogfile="/var/log/syslog" validate_ipv6(){ ocf_log debug "Validating IPv6 addr: [\"$1\"]." echo "$1" | $GREP_BIN -E "^\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}))|:)))(%.+)?\s*$" > /dev/null if [ $? -eq 0 ] then # the ipv6 is valid ocf_log debug "IPv6 addr: [\"$1\"] is valid." return 1 fi # the ipv6 is invalid ocf_log err "IPv6 addr: [\"$1\"] is not valid." return 0 } validate_cidr(){ ocf_log debug "Validating cidr: \"$1\"." if [ $1 -lt 129 ] then if [ $1 -gt 0 ] then # the cidr is valid ocf_log debug "Cidr: \"$1\" is valid." return 1 fi fi ocf_log err "Cidr: \"$1\" is not valid." return 0 } iface_has_ipv6() { ocf_log debug "Checking if iface \"$IFACE\" has the ipv6 [\"$ipv6addr\"]." if [ ! -z $1 ] then $IFCONFIG_BIN $IFACE | $GREP_BIN $1 2> /dev/null > /dev/null if [ $? -eq 0 ] then # the iface has the IPv6 ocf_log info "The iface \"$IFACE\" has the ipv6 [\"$ipv6addr\"]." return 1 fi ocf_log info "The iface \"$IFACE\" does not have the ipv6 [\"$ipv6addr\"]." fi return 0 } IPv6addrLO_status() { # Will check that the system has the ipv6 saved in the pidfile if [ -r $pidfile ] then ocf_log debug "STATUS: The pidfile \"$pidfile\" exists." validate_ipv6 `cat $pidfile | awk -F'/' '{print $1}'` if [ $? -eq 1 ] then # the ipv6 stored in pidfile is valid, then check if the system has that ip iface_has_ipv6 `cat $pidfile` if [ $? -eq 1 ] then ocf_log info "The iface \"$IFACE\" has the IPv6 \"[`cat $pidfile`]\" stored in \"$pidfile\"." return $OCF_RUNNING else ocf_log err "When checking status, the iface \"$IFACE\" has nor the IPv6 of the \"$pidfile\" nor \"$ipv6addr\"." return $OCF_ERR_GENERIC fi else ocf_log err "The ipv6addr in \"$pidfile\" is not valid: [\"`cat $pidfile`\"]." return $OCF_ERR_GENERIC fi fi ocf_log debug "The pidfile \"$pidfile\" don't exists." return $OCF_NOT_RUNNING } IPv6addrLO_start() { if ! IPv6addrLO_status then # First, validate the input parameteres, ipv6addr and cidr_netmaks validate_ipv6 $ipv6addr if [ $? -ne 1 ] then ocf_log err "$process: The ipv6 addr: \"$ipv6addr\" is not a valid one." return $OCF_ERR_GENERIC fi validate_cidr $cidr_netmask if [ $? -ne 1 ] then ocf_log err "$process: The cidr netmask \"$cidr_netmask\" is not valid." return $OCF_ERR_GENERIC fi # Before assign the ip, check if we already have that ip # because maybe we had a sudden reboot and the ipv6 is still on lo. iface_has_ipv6 $ipv6addr if [ $? -eq 1 ] then # we have the IPv6addr on loopback ocf_log info "The iface \"$IFACE\" had the IPv6 addr [\"$ipv6addr/$cidr_netmask\"], don't assigning again." touch $pidfile if [ $? -ne 0 ] then ocf_log war "Could not create the pidfile \"$pidfile\"." fi echo "$ipv6addr/$cidr_netmask" > $pidfile if [ $? -ne 0 ] then ocf_log err "Failed to manage the new pidfile for \"$ipv6addr/\$cidr_netmask\"." fi else # we don't have the IPv6addr on loopback ocf_log info "Starting $process" # Doing different depending on what logfile we have. if [ -n "$logfile" -a -n "$errlogfile" ] then # We have logfile and errlogfile, so redirect STDOUT und STDERR to different files $IFCONFIG_BIN $IFACE add $ipv6addr/$cidr_netmask >> $logfile 2>> $errlogfile else if [ -n "$logfile" ] then # We only have logfile so redirect STDOUT and STDERR to the same file $IFCONFIG_BIN $IFACE add $ipv6addr/$cidr_netmask >> $logfile 2>&1 else # We have neither logfile nor errlogfile, so we're not going to redirect anything $IFCONFIG_BIN $IFACE add $ipv6addr/$cidr_netmask fi fi echo "$ipv6addr/$cidr_netmask" > $pidfile fi # Check what happened here. if IPv6addrLO_status then ocf_log info "$process: Started successfully." return $OCF_SUCCESS else ocf_log err "$process: Could not be started: ipv6addr[\"$ipv6addr\"] cidr_netmask[\"$cidr_netmask\"]." return $OCF_ERR_GENERIC fi else # If already running, consider start successful ocf_log debug "$process: is already running" return $OCF_SUCCESS fi } IPv6addrLO_stop() { ocf_log debug "$process: Running STOP function." if [ -n "$OCF_RESKEY_stop_timeout" ] then stop_timeout=$OCF_RESKEY_stop_timeout elif [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then # Allow 2/3 of the action timeout for the orderly shutdown # (The origin unit is ms, hence the conversion) stop_timeout=$((OCF_RESKEY_CRM_meta_timeout/1500)) else stop_timeout=10 fi if IPv6addrLO_status then $IFCONFIG_BIN $IFACE del `cat $pidfile` i=0 while [ $i -lt $stop_timeout ] do if ! IPv6addrLO_status then rm -f $pidfile return $OCF_SUCCESS fi sleep 1 i=`expr $i + 1` done ocf_log warn "Stop failed. Trying again." $IFCONFIG_BIN $IFACE del `cat $pidfile` rm -f $pidfile if ! IPv6addrLO_status then ocf_log warn "Stop success." return $OCF_SUCCESS else ocf_log err "Failed to stop." return $OCF_ERR_GENERIC fi else # was not running, so stop can be considered successful $ICONFIG_BIN $IFACE del `cat $pidfile` rm -f $pidfile return $OCF_SUCCESS fi } IPv6addrLO_monitor() { IPv6addrLO_status ret=$? if [ $ret -eq $OCF_SUCCESS ] then if [ -n "$OCF_RESKEY_monitor_hook" ]; then eval "$OCF_RESKEY_monitor_hook" if [ $? -ne $OCF_SUCCESS ]; then return ${OCF_ERR_GENERIC} fi return $OCF_SUCCESS else true fi else return $ret fi } IPv6addrLO_validate() { ocf_log debug "IPv6addrLO validating: args:[\"$*\"]" if [ -x $IFCONFIG_BIN ] then ocf_log debug "Binary \"$IFCONFIG_BIN\" exist and is executable." return $OCF_SUCCESS else ocf_log err "Binary \"$IFCONFIG_BIN\" does not exist or isn't executable." return $OCF_ERR_INSTALLED fi ocf_log err "Error while validating." return $OCF_ERR_GENERIC } IPv6addrLO_meta(){ cat <<END <?xml version="1.0"?> <!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> <resource-agent name="IPv6addrLO"> <version>0.1</version> <longdesc lang="en"> OCF RA to manage IPv6addr on loopback interface Linux </longdesc> <shortdesc lang="en">IPv6 addr on loopback linux</shortdesc> <parameters> <parameter name="ipv6addr" required="1"> <longdesc lang="en"> The ipv6 addr to asign to the loopback interface. </longdesc> <shortdesc lang="en">Ipv6 addr to the loopback interface.</shortdesc> <content type="string" default=""/> </parameter> <parameter name="cidr_netmask" required="1"> <longdesc lang="en"> The cidr netmask of the ipv6 addr. </longdesc> <shortdesc lang="en">netmask of the ipv6 addr.</shortdesc> <content type="string" default="128"/> </parameter> <parameter name="logfile" required="0"> <longdesc lang="en"> File to write STDOUT to </longdesc> <shortdesc lang="en">File to write STDOUT to</shortdesc> <content type="string" /> </parameter> <parameter name="errlogfile" required="0"> <longdesc lang="en"> File to write STDERR to </longdesc> <shortdesc lang="en">File to write STDERR to</shortdesc> <content type="string" /> </parameter> </parameters> <actions> <action name="start" timeout="20s" /> <action name="stop" timeout="20s" /> <action name="monitor" depth="0" timeout="20s" interval="10" /> <action name="meta-data" timeout="5" /> <action name="validate-all" timeout="5" /> </actions> </resource-agent> END exit 0 } case "$1" in meta-data|metadata|meta_data|meta) IPv6addrLO_meta ;; start) IPv6addrLO_start ;; stop) IPv6addrLO_stop ;; monitor) IPv6addrLO_monitor ;; validate-all) IPv6addrLO_validate ;; *) ocf_log err "$0 was called with unsupported arguments:" exit $OCF_ERR_UNIMPLEMENTED ;; esac -- /* Arturo Borrero Gonzalez || cer.i...@linuxmail.org */ /* Use debian gnu/linux! Best OS ever! */
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