2 # main autocluster script
4 # Copyright (C) Andrew Tridgell 2008
5 # Copyright (C) Martin Schwenke 2008
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, see <http://www.gnu.org/licenses/>.
20 ##BEGIN-INSTALLDIR-MAGIC##
21 # There are better ways of doing this but not if you still want to be
22 # able to run straight out of a git tree. :-)
26 autocluster=$(which "$0")
28 if [ -L "$autocluster" ] ; then
29 autocluster=$(readlink "$autocluster")
31 installdir=$(dirname "$autocluster")
32 ##END-INSTALLDIR-MAGIC##
39 Usage: autocluster [OPTION] ... <COMMAND>
41 -c <file> specify config file (default is "config")
42 -e <expr> execute <expr> and exit
43 -E <expr> execute <expr> and continue
44 -x enable script debugging
45 --dump dump config settings and exit
47 configuration options:
55 base [ create | boot ] ...
57 cluster [ build | destroy | create | update_hosts | boot | setup ] ...
62 create cluster [ CLUSTERNAME ]
65 create node CLUSTERNAME IP_OFFSET
66 (re)create a single cluster node
69 mount a qemu disk on mnt/
72 unmount a qemu disk from mnt/
80 ###############################
83 if [ "$no_sanity" = 1 ] ; then
84 fill_text 0 "WARNING: $*" >&2
86 fill_text 0 "ERROR: $*" >&2
93 echo "######################################################################"
94 printf "# %-66s #\n" "$*"
95 echo "######################################################################"
105 local tmpfile=$(mktemp)
107 cat <<EOF >"$tmpfile"
108 spawn tail -n 10000 -f $file
109 expect -timeout $timeout -re "$msg"
116 if ! grep -E "$msg" "$file" > /dev/null; then
117 echo "Failed to find \"$msg\" in \"$file\""
124 ###############################
126 # Indirectly call a function named by ${1}_${2}
128 local func="$1" ; shift
129 local type="$1" ; shift
131 local f="${func}_${type}"
132 if type -t "$f" >/dev/null && ! type -P "$f" >/dev/null ; then
136 if type -t "$f" >/dev/null && ! type -P "$f" >/dev/null ; then
139 die "No function defined for \"${func}\" \"${type}\""
144 # Note that this will work if you pass "call_func f" because the first
145 # element of the node tuple is the node type. Nice... :-)
150 "$@" $(IFS=: ; echo $n)
154 node_is_ctdb_node_DEFAULT ()
159 hack_one_node_with ()
161 local filter="$1" ; shift
170 local item="${node_type}:${ip_offset}${name:+:}${name}${ctdb_node:+:}${ctdb_node}"
171 nodes="${nodes}${nodes:+ }${item}"
174 # This also gets used for non-filtering iteration.
175 hack_all_nodes_with ()
180 for_each_node hack_one_node_with "$filter"
189 eval "$hook_var=\"${!hook_var}${!hook_var:+ }${new_hook}\""
198 for i in ${!hook_var} ; do
203 # Use with care, since this may clear some autocluster defaults.!
208 eval "$hook_var=\"\""
211 ##############################
213 # These hooks are intended to customise the value of $DISK. They have
214 # access to 1 argument ("base", "system", "shared") and the variables
215 # $VIRTBASE, $CLUSTER, $BASENAME (for "base"), $NAME (for "system"),
216 # $SHARED_DISK_NUM (for "shared"). A hook must be deterministic and
217 # should not be stateful, since they can be called multiple times for
221 create_node_DEFAULT ()
228 echo "Creating node \"$name\" (of type \"${type}\")"
230 create_node_COMMON "$name" "$ip_offset" "$type"
233 # common node creation stuff
234 create_node_COMMON ()
239 local template_file="${4:-$NODE_TEMPLATE}"
241 if [ "$SYSTEM_DISK_FORMAT" != "qcow2" -a "$BASE_FORMAT" = "qcow2" ] ; then
242 die "Error: if BASE_FORMAT is \"qcow2\" then SYSTEM_DISK_FORMAT must also be \"qcow2\"."
245 local IPNUM=$(($FIRSTIP + $ip_offset))
248 # Determine base image name. We use $DISK temporarily to allow
249 # the path to be hacked.
250 local DISK="${VIRTBASE}/${BASENAME}.${BASE_FORMAT}"
251 if [ "$BASE_PER_NODE_TYPE" = "yes" ] ; then
252 DISK="${VIRTBASE}/${BASENAME}-${type}.${BASE_FORMAT}"
254 run_hooks hack_disk_hooks "base"
255 local base_disk="$DISK"
257 # Determine the system disk image name.
258 DISK="${VIRTBASE}/${CLUSTER}/${NAME}.${SYSTEM_DISK_FORMAT}"
259 run_hooks hack_disk_hooks "system"
262 if [ "$DISK_FOLLOW_SYMLINKS" = "yes" -a -L "$DISK" ] ; then
263 di=$(readlink "$DISK")
266 local di_dirname="${di%/*}"
267 mkdir -p "$di_dirname"
269 case "$SYSTEM_DISK_FORMAT" in
271 echo "Creating the disk..."
272 qemu-img create -b "$base_disk" -f qcow2 "$di"
273 create_node_configure_image "$DISK" "$type"
276 echo "Creating the disk..."
277 cp -v --sparse=always "$base_disk" "$di"
278 create_node_configure_image "$DISK" "$type"
281 echo "Creating the disk..."
282 cp -v --reflink=always "$base_disk" "$di"
283 create_node_configure_image "$DISK" "$type"
286 echo "Creating the disk (using mmclone)..."
287 local base_snap="${base_disk}.snap"
288 [ -f "$base_snap" ] || mmclone snap "$base_disk" "$base_snap"
289 mmclone copy "$base_snap" "$di"
290 create_node_configure_image "$DISK" "$type"
293 echo "Skipping disk image creation as requested"
296 die "Error: unknown SYSTEM_DISK_FORMAT=\"${SYSTEM_DISK_FORMAT}\"."
299 # Pull the UUID for this node out of the map.
300 UUID=$(awk "\$1 == $ip_offset {print \$2}" $uuid_map)
304 echo "Creating $NAME.xml"
305 substitute_vars $template_file tmp/$NAME.xml
307 # install the XML file
308 $VIRSH undefine $NAME > /dev/null 2>&1 || true
309 $VIRSH define tmp/$NAME.xml
312 create_node_configure_image ()
317 diskimage mount "$disk"
322 hack_network_map_hooks=""
324 # Uses: CLUSTER, NAME, NETWORKS, FIRSTIP, ip_offset
327 network_map="tmp/network_map.$NAME"
329 if [ -n "$CLUSTER" ] ; then
330 local md5=$(echo "$CLUSTER" | md5sum)
331 local nh=$(printf "%02x" $ip_offset)
332 local mac_prefix="02:${md5:0:2}:${md5:2:2}:00:${nh}:"
334 local mac_prefix="02:42:42:00:00:"
339 for n in $NETWORKS ; do
340 local ch=$(printf "%02x" $count)
341 local mac="${mac_prefix}${ch}"
344 local ip_bits="$1" ; shift
345 local dev="$1" ; shift
348 local net="${ip_bits%/*}"
349 local netname="acnet_${net//./_}"
351 local ip="${net%.*}.${IPNUM}"
352 local mask="255.255.255.0"
354 # This can be used to override the variables in the echo
355 # statement below. The hook can use any other variables
356 # available in this function.
357 run_hooks hack_network_map_hooks
359 echo "${netname} ${dev} ${ip} ${mask} ${mac} ${opts}"
360 count=$(($count + 1))
364 ##############################
368 # Expand out any abbreviations in NODES.
377 for i in ${ips//,/ } ; do
378 ns="${ns}${ns:+ }${t}:${i}"
383 for i in $(seq ${ips/-/ }) ; do
384 ns="${ns}${ns:+ }${t}:${i}"
388 ns="${ns}${ns:+ }${n}"
393 # Check IP addresses for duplicates.
395 # This function doesn't modify anything...
398 [ "${ip_offsets/${ip_offset}}" != "$ip_offsets" ] && \
399 die "Duplicate IP offset in NODES - ${node_type}:${ip_offset}"
400 ip_offsets="${ip_offsets}${ip_offset}:"
402 hack_all_nodes_with get_ip_offset
404 # Determine node names and whether they're in the CTDB cluster
405 declare -A node_count
406 _get_name_ctdb_node ()
408 local count=$((${node_count[$node_type]:-0} + 1))
409 node_count[$node_type]=$count
411 fmt=$(call_func node_name_format "$node_type") || \
412 die "Node type \"${node_type}\" not defined!!!"
413 # printf behaves weirdly if given too many args for format, so
414 # "head" handles the case where there is no %d or similar for
416 name=$(printf "${fmt}" "$CLUSTER" $count | head -n 1)
417 ctdb_node=$(call_func node_is_ctdb_node "$node_type")
419 hack_all_nodes_with _get_name_ctdb_node
422 ##############################
424 sanity_check_cluster_name ()
426 [ -z "${CLUSTER//[A-Za-z0-9]}" ] || \
427 die "Cluster names should be restricted to the characters A-Za-z0-9. \
428 Some cluster filesystems have problems with other characters."
433 common_nodelist_hacking ()
435 # Rework the NODES list
438 # Build /etc/hosts and hack the names of the ctdb nodes
439 hosts_line_hack_name ()
443 local ip_addr="${NETWORK_PRIVATE_PREFIX}.$(($FIRSTIP + $ip_offset))"
445 # Primary name for CTDB nodes is <CLUSTER>n<num>
446 if [ "$ctdb_node" = 1 ] ; then
447 num_ctdb_nodes=$(($num_ctdb_nodes + 1))
448 sname="${CLUSTER}n${num_ctdb_nodes}"
449 hosts_line="$ip_addr ${sname}.${ld} ${name}.${ld} $name $sname"
452 hosts_line="$ip_addr ${name}.${ld} $name"
455 # This allows you to add a function to your configuration file
456 # to modify hostnames (and other aspects of nodes). This
457 # function can access/modify $name (the existing name),
458 # $node_type and $ctdb_node (1, if the node is a member of the
459 # CTDB cluster, 0 otherwise).
460 if [ -n "$HOSTNAME_HACKING_FUNCTION" ] ; then
461 local old_name="$name"
462 $HOSTNAME_HACKING_FUNCTION
463 if [ "$name" != "$old_name" ] ; then
464 hosts_line="$ip_addr ${name}.${ld} $name"
470 hosts_file="tmp/hosts.$CLUSTER"
472 local num_ctdb_nodes=0
473 local ld=$(echo $DOMAIN | tr A-Z a-z)
474 echo "# autocluster $CLUSTER"
475 hack_all_nodes_with hosts_line_hack_name
479 # Build /etc/ctdb/nodes
482 [ "$ctdb_node" = 1 ] || return 0
483 echo "${NETWORK_PRIVATE_PREFIX}.$(($FIRSTIP + $ip_offset))"
484 num_nodes=$(($num_nodes + 1))
486 nodes_file="tmp/nodes.$CLUSTER"
488 hack_all_nodes_with ctdb_nodes_line >$nodes_file
491 uuid_map="tmp/uuid_map.$CLUSTER"
494 echo "${ip_offset} $(uuidgen) ${node_type}"
496 hack_all_nodes_with uuid_map_line >$uuid_map
499 create_cluster_hooks=
500 cluster_created_hooks=
504 # Use $1. If not set then use value from configuration file.
505 CLUSTER="${1:-${CLUSTER}}"
506 announce "cluster create \"${CLUSTER}\""
507 [ -n "$CLUSTER" ] || die "\$CLUSTER not set"
509 sanity_check_cluster_name
511 mkdir -p $VIRTBASE/$CLUSTER $KVMLOG tmp
513 # Run hooks before doing anything else.
514 run_hooks create_cluster_hooks
516 common_nodelist_hacking
518 for_each_node call_func create_node
520 echo "Cluster $CLUSTER created"
523 run_hooks cluster_created_hooks
526 cluster_created_hosts_message ()
528 echo "You may want to add this to your /etc/hosts file:"
532 register_hook cluster_created_hooks cluster_created_hosts_message
536 announce "cluster destroy \"${CLUSTER}\""
537 [ -n "$CLUSTER" ] || die "\$CLUSTER not set"
539 vircmd destroy "$CLUSTER" || true
542 cluster_update_hosts ()
544 announce "cluster update_hosts \"${CLUSTER}\""
545 [ -n "$CLUSTER" ] || die "\$CLUSTER not set"
547 [ -n "$hosts_file" ] || hosts_file="tmp/hosts.${CLUSTER}"
548 [ -r "$hosts_file" ] || die "Missing hosts file \"${hosts_file}\""
550 local pat="# autocluster ${CLUSTER}\$|[[:space:]]${CLUSTER}(n|base)[[:digit:]]+"
552 local t="/etc/hosts.${CLUSTER}"
553 grep -E "$pat" /etc/hosts >"$t" || true
554 if diff -B "$t" "$hosts_file" >/dev/null ; then
559 local old=/etc/hosts.old.autocluster
561 local new=/etc/hosts.new
562 grep -Ev "$pat" "$old" |
563 cat -s - "$hosts_file" >"$new"
567 echo "Made these changes to /etc/hosts:"
568 diff -u "$old" /etc/hosts || true
573 [ -n "$CLUSTER_PATTERN" ] || CLUSTER_PATTERN="$CLUSTER"
574 announce "cluster boot \"${CLUSTER_PATTERN}\""
575 [ -n "$CLUSTER_PATTERN" ] || die "\$CLUSTER_PATTERN not set"
577 vircmd start "$CLUSTER_PATTERN"
579 local nodes=$(vircmd dominfo "$CLUSTER_PATTERN" 2>/dev/null | \
580 sed -n -e 's/Name: *//p')
585 waitfor "${KVMLOG}/serial.$i" "login:" 300 || {
586 vircmd destroy "$CLUSTER_PATTERN"
587 die "Failed to create cluster"
591 # Move past the last line of log output
595 cluster_setup_tasks_DEFAULT ()
599 # By default nodes have no tasks
601 install_packages) echo "" ;;
602 setup_clusterfs) echo "" ;;
603 setup_node) echo "" ;;
604 setup_cluster) echo "" ;;
610 announce "cluster setup \"${CLUSTER}\""
611 [ -n "$CLUSTER" ] || die "\$CLUSTER not set"
613 local ssh="ssh -o StrictHostKeyChecking=no"
614 local setup_clusterfs_done=false
615 local setup_cluster_done=false
617 _cluster_setup_do_stage ()
625 local tasks=$(call_func cluster_setup_tasks "$type" "$stage")
627 if [ -n "$tasks" ] ; then
628 # These tasks are only done on 1 node
631 if $setup_clusterfs_done ; then
634 setup_clusterfs_done=true
638 if $setup_cluster_done ; then
641 setup_cluster_done=true
646 $ssh "$name" "./scripts/${stage}.sh" $tasks
651 local stages="install_packages setup_clusterfs setup_node setup_cluster"
653 for stage in $stages ; do
654 for_each_node _cluster_setup_do_stage "$stage"
661 local single_node_ip_offset="$2"
663 sanity_check_cluster_name
665 mkdir -p $VIRTBASE/$CLUSTER $KVMLOG tmp
667 common_nodelist_hacking
670 set -- $(IFS=: ; echo $n)
671 [ $single_node_ip_offset -eq $2 ] || continue
672 call_func create_node "$@"
674 echo "Requested node created"
676 echo "You may want to update your /etc/hosts file:"
683 ###############################
684 # test the proxy setup
686 export http_proxy=$WEBPROXY
687 wget -O /dev/null $INSTALL_SERVER || \
688 die "Your WEBPROXY setting \"$WEBPROXY\" is not working"
694 kickstart_floppy_create_hooks=
696 guess_install_network ()
698 # Figure out IP address to use during base install. Default to
699 # the IP address of the 1st (private) network. If a gateway is
700 # specified then use the IP address associated with it.
703 local netname dev ip mask mac opts
704 while read netname dev ip mask mac opts; do
709 INSTALL_GW="${o#gw=}"
710 INSTALL_IP="${ip}${FIRSTIP}"
713 [ -n "$INSTALL_IP" ] || INSTALL_IP="$ip"
720 local NAME="$BASENAME"
721 local DISK="${VIRTBASE}/${NAME}.${BASE_FORMAT}"
722 run_hooks hack_disk_hooks "base"
726 echo "Testing WEBPROXY $WEBPROXY"
730 if [ "$DISK_FOLLOW_SYMLINKS" = "yes" -a -L "$DISK" ] ; then
731 di=$(readlink "$DISK")
734 local di_dirname="${di%/*}"
735 mkdir -p "$di_dirname"
737 echo "Creating the disk"
738 qemu-img create -f $BASE_FORMAT "$di" $DISKSIZE
741 mkdir -p mnt tmp tmp/ISO
747 guess_install_network
749 echo "Creating kickstart file from template"
750 substitute_vars "$KICKSTART" "tmp/ks.cfg"
752 # $ISO gets $ISO_DIR prepended if it doesn't start with a leading '/'.
755 (*) ISO="${ISO_DIR}/${ISO}"
758 echo "Creating kickstart floppy"
759 dd if=/dev/zero of=tmp/floppy.img bs=1024 count=1440
760 mkdosfs -n KICKSTART tmp/floppy.img
761 mount -o loop -t msdos tmp/floppy.img mnt
763 mount -o loop,ro $ISO tmp/ISO
765 echo "Setting up bootloader"
766 cp tmp/ISO/isolinux/isolinux.bin tmp
767 cp tmp/ISO/isolinux/vmlinuz tmp
768 cp tmp/ISO/isolinux/initrd.img tmp
770 run_hooks kickstart_floppy_create_hooks
777 substitute_vars $INSTALL_TEMPLATE tmp/$NAME.xml
779 rm -f $KVMLOG/serial.$NAME
781 # boot the install CD
782 $VIRSH create tmp/$NAME.xml
784 echo "Waiting for install to start"
787 # wait for the install to finish
788 if ! waitfor $KVMLOG/serial.$NAME "$KS_DONE_MESSAGE" $CREATE_BASE_TIMEOUT ; then
790 die "Failed to create base image ${DISK} after waiting for ${CREATE_BASE_TIMEOUT} seconds.
791 You may need to increase the value of CREATE_BASE_TIMEOUT.
792 Alternatively, the install might have completed but KS_DONE_MESSAGE
793 (currently \"${KS_DONE_MESSAGE}\")
794 may not have matched anything at the end of the kickstart output."
802 Install finished, base image $DISK created
805 chcon -t virt_content_t $DISK
807 To ensure that this image does not change
809 Note that the root password has been set to $ROOTPASSWORD
814 ###############################
821 DISK="${VIRTBASE}/${NAME}.${BASE_FORMAT}"
829 diskimage mount $DISK
835 echo "Creating $NAME.xml"
836 substitute_vars $BOOT_TEMPLATE tmp/$NAME.xml
838 # boot the base system
839 $VIRSH create tmp/$NAME.xml
842 ######################################################################
844 # Updating a disk image...
850 call_func diskimage_"$func" "$SYSTEM_DISK_ACCESS_METHOD" "$@"
853 # setup the files from $BASE_TEMPLATES/, substituting any variables
854 # based on the config
855 copy_base_dir_substitute_templates ()
859 local d="$BASE_TEMPLATES/$dir"
860 [ -d "$d" ] || return 0
863 for f in $(cd "$d" && find . \! -name '*~' \( -type d -name .svn -prune -o -print \) ) ; do
864 f="${f#./}" # remove leading "./" for clarity
865 if [ -d "$d/$f" ]; then
866 # Don't chmod existing directory
867 if diskimage is_directory "/$f" ; then
870 diskimage mkdir_p "/$f"
873 diskimage substitute_vars "$d/$f" "/$f"
875 diskimage chmod_reference "$d/$f" "/$f"
881 setup_base_ssh_keys ()
883 # this is needed as git doesn't store file permissions other
885 # Note that we protect the wildcards from the local shell.
886 diskimage chmod 600 "/etc/ssh/*key" "/root/.ssh/*"
887 diskimage chmod 700 "/etc/ssh" "/root/.ssh" "/root"
888 if [ -r "$HOME/.ssh/id_rsa.pub" ]; then
889 echo "Adding $HOME/.ssh/id_rsa.pub to ssh authorized_keys"
890 diskimage append_text_file "$HOME/.ssh/id_rsa.pub" "/root/.ssh/authorized_keys"
892 if [ -r "$HOME/.ssh/id_dsa.pub" ]; then
893 echo "Adding $HOME/.ssh/id_dsa.pub to ssh authorized_keys"
894 diskimage append_text_file "$HOME/.ssh/id_dsa.pub" "/root/.ssh/authorized_keys"
898 register_hook setup_base_hooks setup_base_ssh_keys
900 setup_base_grub_conf ()
902 echo "Adjusting grub.conf"
903 local o="$EXTRA_KERNEL_OPTIONS" # For readability.
904 local grub_configs="/boot/grub/grub.conf"
905 if ! diskimage is_file "$grub_configs" ; then
906 grub_configs="/etc/default/grub /boot/grub2/grub.cfg"
909 for c in $grub_configs ; do
911 -e "s/console=ttyS0,19200/console=ttyS0,115200/" \
912 -e "s/ console=tty1//" -e "s/ rhgb/ norhgb/" \
913 -e "s/ nodmraid//" -e "s/ nompath//" \
914 -e "s/quiet/noapic divider=10${o:+ }${o}/g"
918 register_hook setup_base_hooks setup_base_grub_conf
925 echo "Copy base files"
926 copy_base_dir_substitute_templates "all"
927 if [ -n "$type" ] ; then
928 copy_base_dir_substitute_templates "$type"
931 run_hooks setup_base_hooks
934 # setup various networking components
937 # This avoids doing anything when we're called from boot_base().
938 if [ -z "$hosts_file" ] ; then
939 echo "Skipping network-related setup"
943 echo "Setting up networks"
944 diskimage append_text_file "$hosts_file" "/etc/hosts"
946 echo "Setting up /etc/ctdb/nodes"
947 diskimage mkdir_p "/etc/ctdb"
948 diskimage put "$nodes_file" "/etc/ctdb/nodes"
950 [ "$WEBPROXY" = "" ] || {
951 diskimage append_text "export http_proxy=$WEBPROXY" "/etc/bashrc"
954 if [ -n "$NFSSHARE" -a -n "$NFS_MOUNTPOINT" ] ; then
955 echo "Enabling nfs mount of $NFSSHARE"
956 diskimage mkdir_p "$NFS_MOUNTPOINT"
957 diskimage append_text "$NFSSHARE $NFS_MOUNTPOINT nfs nfsvers=3,intr 0 0" "/etc/fstab"
960 diskimage mkdir_p "/etc/yum.repos.d"
961 echo '@@@YUM_TEMPLATE@@@' | diskimage substitute_vars - "/etc/yum.repos.d/autocluster.repo"
963 diskimage rm_rf "/etc/udev/rules.d/70-persistent-net.rules"
965 echo "Setting up network interfaces: "
966 local netname dev ip mask mac opts
967 while read netname dev ip mask mac opts; do
980 diskimage put - "/etc/sysconfig/network-scripts/ifcfg-${dev}"
990 # This goes to 70-persistent-net.rules
992 # Generated by autocluster
993 SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="${mac}", ATTR{type}=="1", KERNEL=="eth*", NAME="${dev}"
996 done <"$network_map" |
997 diskimage put - "/etc/udev/rules.d/70-persistent-net.rules"
1000 register_hook setup_base_hooks setup_network
1003 [ -z "$TIMEZONE" ] && {
1004 [ -r /etc/timezone ] && {
1005 TIMEZONE=`cat /etc/timezone`
1007 [ -r /etc/sysconfig/clock ] && {
1008 . /etc/sysconfig/clock
1011 TIMEZONE="${TIMEZONE// /_}"
1013 [ -n "$TIMEZONE" ] || \
1014 die "Unable to determine TIMEZONE - please set in config"
1017 # substite a set of variables of the form @@XX@@ for the shell
1018 # variables $XX in a file.
1020 # Indirect variables @@@XX@@@ (3 ats) specify that the variable should
1021 # contain a filename whose contents are substituted, with variable
1022 # substitution applied to those contents. If filename starts with '|'
1023 # it is a command instead - however, quoting is extremely fragile.
1024 substitute_vars() {(
1025 infile="${1:-/dev/null}" # if empty then default to /dev/null
1026 outfile="$2" # optional
1029 cat "$infile" >"$tmp_out"
1031 # Handle any indirects by looping until nothing changes.
1032 # However, only handle 10 levels of recursion.
1035 if ! _substitute_vars "$tmp_out" "@@@" ; then
1037 die "Failed to expand template $infile"
1040 # No old version of file means no changes made.
1041 if [ ! -f "${tmp_out}.old" ] ; then
1045 rm -f "${tmp_out}.old"
1047 count=$(($count + 1))
1048 if [ $count -ge 10 ] ; then
1050 die "Recursion too deep in $infile - only 10 levels allowed!"
1054 # Now regular variables.
1055 if ! _substitute_vars "$tmp_out" "@@" ; then
1057 die "Failed to expand template $infile"
1059 rm -f "${tmp_out}.old"
1061 if [ -n "$outfile" ] ; then
1062 mv "$tmp_out" "$outfile"
1070 # Delimiter @@ means to substitute contents of variable.
1071 # Delimiter @@@ means to substitute contents of file named by variable.
1072 # @@@ supports leading '|' in variable value, which means to excute a
1074 _substitute_vars() {(
1076 delimiter="${2:-@@}"
1078 # Get the list of variables used in the template. The grep
1079 # gets rid of any blank lines and lines with extraneous '@'s
1080 # next to template substitutions.
1081 VARS=$(sed -n -e "s#[^@]*${delimiter}\([A-Z0-9_][A-Z0-9_]*\)${delimiter}[^@]*#\1\n#gp" "$tmp_out" |
1082 grep '^[A-Z0-9_][A-Z0-9_]*$' |
1087 # variable variables are fun .....
1090 die "No substitution given for ${delimiter}$v${delimiter} in $infile"
1094 if [ "$delimiter" = "@@@" ] ; then
1096 c="${f#|}" # Is is a command, signified by a leading '|'?
1097 if [ "$c" = "$f" ] ; then
1098 # No leading '|', cat file.
1102 die "Could not substitute contents of file $f"
1105 # Leading '|', execute command.
1106 # Quoting problems here - using eval "$c" doesn't help.
1110 die "Could not execute command $c"
1115 # escape some pesky chars
1116 # This first one can be too slow if done using a bash
1117 # variable pattern subsitution.
1118 s=$(echo -n "$s" | tr '\n' '\001' | sed -e 's/\o001/\\n/g')
1121 echo "s#${delimiter}${v}${delimiter}#${s}#g"
1124 # Get the in-place sed to make a backup of the old file.
1125 # Remove the backup if it is the same as the resulting file -
1126 # this acts as a flag to the caller that no changes were made.
1127 sed -i.old -f $tmp "$tmp_out"
1128 if cmp -s "${tmp_out}.old" "$tmp_out" ; then
1129 rm -f "${tmp_out}.old"
1136 which $1 > /dev/null || die "Please install $1 to continue"
1139 # Set a variable if it isn't already set. This allows environment
1140 # variables to override default config settings.
1145 [ "${!v+x}" ] || eval "$v=\"$e\""
1151 for i in "${installdir}/config.d/"*.defconf ; do
1156 # Print the list of config variables defined in config.d/.
1157 get_config_options () {( # sub-shell for local declaration of defconf()
1159 defconf() { options="$options $1" ; }
1164 # Produce a list of long options, suitable for use with getopt, that
1165 # represent the config variables defined in config.d/.
1166 getopt_config_options () {
1167 local x=$(get_config_options | tr 'A-Z_' 'a-z-')
1171 # Unconditionally set the config variable associated with the given
1173 setconf_longopt () {
1177 local v=$(echo "${longopt#--}" | tr 'a-z-' 'A-Z_')
1178 # unset so defconf will set it
1183 # Dump all of the current config variables.
1186 for o in $(get_config_options) ; do
1187 echo "${o}=\"${!o}\""
1192 # $COLUMNS is set in interactive bash shells. It probably isn't set
1193 # in this shell, so let's set it if it isn't.
1194 : ${COLUMNS:=$(stty size 2>/dev/null | sed -e 's@.* @@')}
1198 # Print text assuming it starts after other text in $startcol and
1199 # needs to wrap before $COLUMNS - 2. Subsequent lines start at $startcol.
1200 # Long "words" will extend past $COLUMNS - 2.
1205 local width=$(($COLUMNS - 2 - $startcol))
1206 [ $width -lt 0 ] && width=$((78 - $startcol))
1211 if [ $startcol -gt 0 ] ; then
1212 padding=$(printf "\n%${startcol}s" " ")
1218 while [ -n "$text" ] ; do
1221 # If we already have output then arrange padding on the next line.
1222 [ -n "$out" ] && out="${out}${padding}"
1224 # Break the text at $width.
1225 out="${out}${text:0:${width}}"
1226 text="${text:${width}}"
1228 # If we have left over text then the line break may be ugly,
1229 # so let's check and try to break it on a space.
1230 if [ -n "$text" ] ; then
1231 # The 'x's stop us producing a special character like '(',
1232 # ')' or '!'. Yuck - there must be a better way.
1233 if [ "x${text:0:1}" != "x " -a "x${text: -1:1}" != "x " ] ; then
1234 # We didn't break on a space. Arrange for the
1235 # beginning of the broken "word" to appear on the next
1236 # line but not if it will make us loop infinitely.
1237 if [ "${orig}" != "${out##* }${text}" ] ; then
1238 text="${out##* }${text}"
1241 # Hmmm, doing that would make us loop, so add the
1242 # rest of the word from the remainder of the text
1243 # to this line and let it extend past $COLUMNS - 2.
1244 out="${out}${text%% *}"
1245 if [ "${text# *}" != "$text" ] ; then
1246 # Remember the text after the next space for next time.
1249 # No text after next space.
1254 # We broke on a space. If it will be at the beginning
1255 # of the next line then remove it.
1264 # Display usage text, trying these approaches in order.
1265 # 1. See if it all fits on one line before $COLUMNS - 2.
1266 # 2. See if splitting before the default value and indenting it
1267 # to $startcol means that nothing passes $COLUMNS - 2.
1268 # 3. Treat the message and default value as a string and just us fill_text()
1270 usage_display_text () {
1275 local width=$(($COLUMNS - 2 - $startcol))
1276 [ $width -lt 0 ] && width=$((78 - $startcol))
1278 default="(default \"$default\")"
1280 if [ $((${#desc} + 1 + ${#default})) -le $width ] ; then
1281 echo "${desc} ${default}"
1283 local padding=$(printf "%${startcol}s" " ")
1285 if [ ${#desc} -lt $width -a ${#default} -lt $width ] ; then
1287 echo "${padding}${default}"
1289 fill_text $startcol "${desc} ${default}"
1294 # Display usage information for long config options.
1295 usage_smart_display () {( # sub-shell for local declaration of defconf()
1299 local local longopt=$(echo "$1" | tr 'A-Z_' 'a-z-')
1301 printf " --%-25s " "${longopt}=${3}"
1303 usage_display_text $startcol "$4" "$2"
1310 # Display usage information for long config options.
1311 usage_config_options (){
1312 usage_smart_display load_config
1322 actions="${actions}${actions:+ }$*"
1327 [ -n "$actions" ] || usage
1330 for a in $actions ; do
1335 ######################################################################
1339 ######################################################################
1343 ############################
1344 # parse command line options
1345 long_opts=$(getopt_config_options)
1346 getopt_output=$(getopt -n autocluster -o "c:e:E:xh" -l help,dump -l "$long_opts" -- "$@")
1347 [ $? != 0 ] && usage
1349 use_default_config=true
1351 # We do 2 passes of the options. The first time we just handle usage
1352 # and check whether -c is being used.
1353 eval set -- "$getopt_output"
1356 -c) shift 2 ; use_default_config=false ;;
1359 --) shift ; break ;;
1361 -h|--help) usage ;; # Usage should be shown here for real defaults.
1362 --*) shift 2 ;; # Assume other long opts are valid and take an arg.
1363 *) usage ;; # shouldn't happen, so this is reasonable.
1368 $use_default_config && [ -r "$config" ] && . "$config"
1370 eval set -- "$getopt_output"
1376 # force at least ./local_file to avoid accidental file
1378 . "$(dirname $2)/${b}"
1379 # If $CLUSTER is unset then try to base it on the filename
1380 if [ ! -n "$CLUSTER" ] ; then
1383 CLUSTER="${b%.autocluster}"
1388 -e) no_sanity=1 ; run_hooks post_config_hooks ; eval "$2" ; exit ;;
1389 -E) eval "$2" ; shift 2 ;;
1390 -x) set -x; shift ;;
1391 --dump) no_sanity=1 ; run_hooks post_config_hooks ; dump_config ;;
1392 --) shift ; break ;;
1393 -h|--help) usage ;; # Redundant.
1395 # Putting --opt1|opt2|... into a variable and having case
1396 # match against it as a pattern doesn't work. The | is
1397 # part of shell syntax, so we need to do this. Look away
1398 # now to stop your eyes from bleeding! :-)
1399 x=",${long_opts}" # Now each option is surrounded by , and :
1400 if [ "$x" != "${x#*,${1#--}:}" ] ; then
1401 # Our option, $1, surrounded by , and : was in $x, so is legal.
1402 setconf_longopt "$1" "$2"; shift 2
1407 *) usage ;; # shouldn't happen, so this is reasonable.
1411 run_hooks post_config_hooks
1417 echo ERROR: failed in function \"${FUNCNAME}\" at line ${LINENO} of ${BASH_SOURCE[0]} with code $es;
1420 # check for needed programs
1421 check_command expect
1423 [ $# -lt 1 ] && usage
1433 create|boot) actions_add "base_${t}" ;;
1444 destroy|create|update_hosts|boot|setup)
1445 actions_add "cluster_${t}" ;;
1447 for t in destroy create update_hosts boot setup ; do
1448 actions_add "cluster_${t}"
1462 [ $# != 0 ] && usage
1466 [ $# != 1 ] && usage
1470 [ $# != 2 ] && usage
1471 create_one_node "$1" "$2"
1479 [ $# != 1 ] && usage
1480 diskimage mount "$1"
1483 [ $# != 0 ] && usage