Bug#718507: apache2.2-common: apache2 failure to start on boot when binding to IPv6 address
Package: apache2.2-common
Version: 2.2.22-13
Severity: normal
Tags: ipv6
Reported to upstream as requested in Ubuntu bug 1207384: https://bugs.launchpad.net/bugs/1207384
Apache fails to start on boot when attempting to bind to an IPv6 address. boot.log shows the following (IP changed for privacy purposes):
(99)Cannot assign requested address: make_sock: could not bind to address [2001:db8::1]:80
no listening sockets available, shutting down
Unable to open logs
Action 'start' failed.
The Apache error log may have more information.
* Starting web server apache2 [fail]
Starting manually (apachectl start) after boot starts the daemon as expected.
Here is the inet6 section of my /etc/network/interfaces. Again, IPs removed for privacy. The post-up/pre-down route directives are required to access my provider's network:
iface eth0 inet6 static
address 2001:db8::1
netmask 64
up /sbin/ifconfig eth0 inet6 add 2001:db8::2/64
down /sbin/ifconfig eth0 inet6 del 2001:db8::2/64
post-up /sbin/ip -f inet6 route add 2001:db8::ff:ff:ff:ff dev eth0
post-up /sbin/ip -f inet6 route add default via 2001:db8::ff:ff:ff:ff
pre-down /sbin/ip -f inet6 route del default via 2001:db8::ff:ff:ff:ff
pre-down /sbin/ip -f inet6 route del 2001:db8::ff:ff:ff:ff dev eth0
Doing a little bit of research, it appears apache is trying to bind to an IP in the tentative state. (source: http://pyro.eu.org/how-to/micro/nginx-cannot-assign-requested-address-ipv6.txt).
Adding the while loop shown on at that URL to /etc/network/interfaces did not help; however, adding it to the beginning of /etc/init.d/apache2 resolved the issue. Suggest implementing something similar as a fix; have /etc/init.d/apache2 check for IPs in the tentative state and sleep until resolved.
-- Package-specific info:
List of enabled modules from 'apache2 -M':
alias auth_basic authn_file authz_default authz_groupfile
authz_host authz_user autoindex cgid deflate dir env mime
negotiation reqtimeout setenvif status
-- System Information:
Debian Release: 7.1
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages apache2.2-common depends on:
ii apache2-utils 2.2.22-13
ii apache2.2-bin 2.2.22-13
ii lsb-base 4.1+Debian8+deb7u1
ii mime-support 3.52-1
ii perl 5.14.2-21
ii procps 1:3.3.3-3
Versions of packages apache2.2-common recommends:
ii ssl-cert 1.0.32
Versions of packages apache2.2-common suggests:
ii apache2-doc 2.2.22-13
pn apache2-suexec | apache2-suexec-custom <none>
ii w3m [www-browser] 0.5.3-8
Versions of packages apache2.2-common is related to:
pn apache2-mpm-event <none>
pn apache2-mpm-itk <none>
pn apache2-mpm-prefork <none>
ii apache2-mpm-worker 2.2.22-13
-- Configuration Files:
/etc/apache2/ports.conf changed:
NameVirtualHost 198.100.152.164:80
Listen 198.100.152.164:80
NameVirtualHost [2607:5300:60:bae:2::1]:80
Listen [2607:5300:60:bae:2::1]:80
<IfModule mod_ssl.c>
# If you add NameVirtualHost *:443 here, you will also have to change
# the VirtualHost statement in /etc/apache2/sites-available/default-ssl
# to <VirtualHost *:443>
# Server Name Indication for SSL named virtual hosts is currently not
# supported by MSIE on Windows XP.
Listen 443
</IfModule>
<IfModule mod_gnutls.c>
Listen 443
</IfModule>
/etc/apache2/sites-available/default changed:
<VirtualHost 198.100.152.164:80 [2607:5300:60:bae:2::1]:80>
ServerName kevin.ourparadisefalls.com
ServerAdmin webmaster@localhost
DocumentRoot /var/www
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all
</Directory>
ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
/etc/init.d/apache2 changed:
while ip -6 addr show tentative | grep . > /dev/null ; do sleep 1 ; done
set -e
SCRIPTNAME="${0##*/}"
SCRIPTNAME="${SCRIPTNAME##[KS][0-9][0-9]}"
if [ -n "$APACHE_CONFDIR" ] ; then
if [ "${APACHE_CONFDIR##/etc/apache2-}" != "${APACHE_CONFDIR}" ] ; then
DIR_SUFFIX="${APACHE_CONFDIR##/etc/apache2-}"
else
DIR_SUFFIX=
fi
elif [ "${SCRIPTNAME##apache2-}" != "$SCRIPTNAME" ] ; then
DIR_SUFFIX="-${SCRIPTNAME##apache2-}"
APACHE_CONFDIR=/etc/apache2$DIR_SUFFIX
else
DIR_SUFFIX=
APACHE_CONFDIR=/etc/apache2
fi
if [ -z "$APACHE_ENVVARS" ] ; then
APACHE_ENVVARS=$APACHE_CONFDIR/envvars
fi
export APACHE_CONFDIR APACHE_ENVVARS
ENV="env -i LANG=C PATH=/usr/local/bin:/usr/bin:/bin"
if [ "$APACHE_CONFDIR" != /etc/apache2 ] ; then
ENV="$ENV APACHE_CONFDIR=$APACHE_CONFDIR"
fi
if [ "$APACHE_ENVVARS" != "$APACHE_CONFDIR/envvars" ] ; then
ENV="$ENV APACHE_ENVVARS=$APACHE_ENVVARS"
fi
HTCACHECLEAN_RUN=auto
HTCACHECLEAN_MODE=daemon
HTCACHECLEAN_SIZE=300M
HTCACHECLEAN_DAEMON_INTERVAL=120
HTCACHECLEAN_PATH=/var/cache/apache2$DIR_SUFFIX/mod_disk_cache
HTCACHECLEAN_OPTIONS=""
APACHE_HTTPD=$(. $APACHE_ENVVARS && echo $APACHE_HTTPD)
if [ -z "$APACHE_HTTPD" ] ; then
APACHE_HTTPD=/usr/sbin/apache2
fi
if [ ! -x $APACHE_HTTPD ] ; then
echo "No apache MPM package installed"
exit 0
fi
. /lib/lsb/init-functions
test -f /etc/default/rcS && . /etc/default/rcS
if [ -f /etc/default/apache2$DIR_SUFFIX ] ; then
. /etc/default/apache2$DIR_SUFFIX
elif [ -f /etc/default/apache2 ] ; then
. /etc/default/apache2
fi
APACHE2CTL="$ENV /usr/sbin/apache2ctl"
HTCACHECLEAN="$ENV /usr/sbin/htcacheclean"
PIDFILE=$(. $APACHE_ENVVARS && echo $APACHE_PID_FILE)
if [ -z "$PIDFILE" ] ; then
echo ERROR: APACHE_PID_FILE needs to be defined in $APACHE_ENVVARS >&2
exit 2
fi
check_htcacheclean() {
[ "$HTCACHECLEAN_MODE" = "daemon" ] || return 1
[ "$HTCACHECLEAN_RUN" = "yes" ] && return 0
MODSDIR=$(. $APACHE_ENVVARS && echo $APACHE_MODS_ENABLED)
[ "$HTCACHECLEAN_RUN" = "auto" \
-a -e ${MODSDIR:-$APACHE_CONFDIR/mods-enabled}/disk_cache.load ] && \
return 0
return 1
}
start_htcacheclean() {
if [ ! -d "$HTCACHECLEAN_PATH" ] ; then
echo "... directory $HTCACHECLEAN_PATH does not exist!" >&2
return 1
fi
$HTCACHECLEAN $HTCACHECLEAN_OPTIONS -d$HTCACHECLEAN_DAEMON_INTERVAL \
-i -p$HTCACHECLEAN_PATH -l$HTCACHECLEAN_SIZE
}
stop_htcacheclean() {
pkill -P 1 -f "htcacheclean.* -p$HTCACHECLEAN_PATH " 2> /dev/null || echo ...not running
}
pidof_apache() {
# if there is actually an apache2 process whose pid is in PIDFILE,
# print it and return 0.
if [ -e "$PIDFILE" ]; then
if pidof apache2 | tr ' ' '\n' | grep -w $(cat $PIDFILE); then
return 0
fi
fi
return 1
}
apache_stop() {
if $APACHE2CTL configtest > /dev/null 2>&1; then
# if the config is ok than we just stop normaly
$APACHE2CTL stop 2>&1 | grep -v 'not running' >&2 || true
else
# if we are here something is broken and we need to try
# to exit as nice and clean as possible
PID=$(pidof_apache) || true
if [ "${PID}" ]; then
# in this case it is everything nice and dandy and we kill apache2
echo
log_warning_msg "The apache2$DIR_SUFFIX configtest failed, so we are trying to kill it manually. This is almost certainly suboptimal, so please make sure your system is working as you'd expect now!"
kill $PID
elif [ "$(pidof apache2)" ]; then
if [ "$VERBOSE" != no ]; then
echo " ... failed!"
echo "You may still have some apache2 processes running. There are"
echo "processes named 'apache2' which do not match your pid file,"
echo "and in the name of safety, we've left them alone. Please review"
echo "the situation by hand."
fi
return 1
fi
fi
}
apache_wait_stop() {
# running ?
PIDTMP=$(pidof_apache) || true
if kill -0 "${PIDTMP:-}" 2> /dev/null; then
PID=$PIDTMP
fi
apache_stop
# wait until really stopped
if [ -n "${PID:-}" ]; then
i=0
while kill -0 "${PID:-}" 2> /dev/null; do
if [ $i = '60' ]; then
break;
else
if [ $i = '0' ]; then
echo -n " ... waiting "
else
echo -n "."
fi
i=$(($i+1))
sleep 1
fi
done
fi
}
case $1 in
start)
log_daemon_msg "Starting web server" "apache2"
if $APACHE2CTL start; then
if check_htcacheclean ; then
log_progress_msg htcacheclean
start_htcacheclean || log_end_msg 1
fi
log_end_msg 0
else
log_end_msg 1
fi
;;
stop)
if check_htcacheclean ; then
log_daemon_msg "Stopping web server" "htcacheclean"
stop_htcacheclean
log_progress_msg "apache2"
else
log_daemon_msg "Stopping web server" "apache2"
fi
if apache_wait_stop; then
log_end_msg 0
else
log_end_msg 1
fi
;;
graceful-stop)
if check_htcacheclean ; then
log_daemon_msg "Stopping web server" "htcacheclean"
stop_htcacheclean
log_progress_msg "apache2"
else
log_daemon_msg "Stopping web server" "apache2"
fi
if $APACHE2CTL graceful-stop; then
log_end_msg 0
else
log_end_msg 1
fi
;;
reload | force-reload | graceful)
log_daemon_msg "Reloading web server config"
if pidof_apache > /dev/null ; then
log_progress_msg "apache2"
if ! $APACHE2CTL configtest > /dev/null 2>&1; then
log_end_msg 1
$APACHE2CTL configtest || true
exit 1
fi
if $APACHE2CTL graceful $2 ; then
log_end_msg 0
else
log_end_msg 1
fi
else
log_progress_msg "apache2 not running"
log_end_msg 0
fi
;;
restart)
if ! $APACHE2CTL configtest > /dev/null 2>&1; then
$APACHE2CTL configtest || true
log_end_msg 1
exit 1
fi
if check_htcacheclean ; then
log_daemon_msg "Restarting web server" "htcacheclean"
stop_htcacheclean
log_progress_msg apache2
else
log_daemon_msg "Restarting web server" "apache2"
fi
PID=$(pidof_apache) || true
if ! apache_wait_stop; then
log_end_msg 1 || true
fi
if $APACHE2CTL start; then
if check_htcacheclean ; then
start_htcacheclean || log_end_msg 1
fi
log_end_msg 0
else
log_end_msg 1
fi
;;
start-htcacheclean)
log_daemon_msg "Starting htcacheclean"
start_htcacheclean || log_end_msg 1
log_end_msg 0
;;
stop-htcacheclean)
log_daemon_msg "Stopping htcacheclean"
stop_htcacheclean
log_end_msg 0
;;
status)
PID=$(pidof_apache) || true
if [ -n "$PID" ]; then
echo "Apache2$DIR_SUFFIX is running (pid $PID)."
exit 0
else
echo "Apache2$DIR_SUFFIX is NOT running."
if [ -e "$PIDFILE" ]; then
exit 1
else
exit 3
fi
fi
;;
*)
log_success_msg "Usage: /etc/init.d/apache2$DIR_SUFFIX {start|stop|graceful-stop|restart|reload|force-reload|start-htcacheclean|stop-htcacheclean|status}"
exit 1
;;
esac
-- no debconf information
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