This utility can be used to configure an environment for a virtual
cluster. It sets up entries in /etc/hosts, creates the necessary
directory structure, and generates helper scripts.
Documentation for virtual clusters will come in a later patch.
---
.gitignore | 1 +
Makefile.am | 9 +++
tools/vcluster-setup.in | 167 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 177 insertions(+), 0 deletions(-)
create mode 100644 tools/vcluster-setup.in
diff --git a/.gitignore b/.gitignore
index 393495e..2571df7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -93,6 +93,7 @@
# tools
/tools/kvm-ifup
/tools/ensure-dirs
+/tools/vcluster-setup
# scripts
/scripts/gnt-backup
diff --git a/Makefile.am b/Makefile.am
index 0cd3cfa..e002f85 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -160,6 +160,7 @@ CLEANFILES = \
$(man_MANS) \
$(manhtml) \
tools/kvm-ifup \
+ tools/vcluster-setup
stamp-directories \
stamp-srclinks \
$(nodist_pkgpython_PYTHON) \
@@ -665,6 +666,9 @@ dist_tools_SCRIPTS = \
tools/xm-console-wrapper \
tools/master-ip-setup
+nodist_tools_SCRIPTS = \
+ tools/vcluster-setup
+
pkglib_python_scripts = \
daemons/import-export \
tools/check-cert-expired
@@ -706,6 +710,7 @@ EXTRA_DIST = \
$(pkglib_python_scripts) \
devel/upload.in \
tools/kvm-ifup.in \
+ tools/vcluster-setup.in \
$(docdot) \
$(docpng) \
$(docrst) \
@@ -1037,6 +1042,10 @@ devel/upload: devel/upload.in $(REPLACE_VARS_SED)
sed -f $(REPLACE_VARS_SED) < $< > $@
chmod u+x $@
+tools/vcluster-setup: tools/vcluster-setup.in $(REPLACE_VARS_SED)
+ sed -f $(REPLACE_VARS_SED) < $< > $@
+ chmod +x $@
+
daemons/%:: daemons/%.in $(REPLACE_VARS_SED)
sed -f $(REPLACE_VARS_SED) < $< > $@
chmod +x $@
diff --git a/tools/vcluster-setup.in b/tools/vcluster-setup.in
new file mode 100644
index 0000000..03bc572
--- /dev/null
+++ b/tools/vcluster-setup.in
@@ -0,0 +1,167 @@
+#!/bin/bash
+#
+
+# Copyright (C) 2012 Google Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+set -e -u -o pipefail
+
+readonly self=$(readlink -f $0)
+readonly ensure_dirs=@PKGLIBDIR@/ensure-dirs
+
+usage() {
+ echo "Usage: $0 <directory>"
+ #echo
+ #echo 'Options:'
+ #echo " -H Hostname"
+ #echo " -P Port (defaults to $default_port)"
+}
+
+# Variables for options
+nodecount=5
+networkprefix=192.0.2
+
+# Parse options
+while getopts :h opt; do
+ case "$opt" in
+ h)
+ usage
+ exit 0
+ ;;
+ \?)
+ echo "Invalid option: -$OPTARG" >&2
+ usage >&2
+ exit 1
+ ;;
+ :)
+ echo "Option -$OPTARG requires an argument" >&2
+ usage >&2
+ exit 1
+ ;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+if [[ "$#" != 1 ]]; then
+ usage
+ exit 1
+fi
+
+readonly rootdir=$1; shift
+
+if [[ ! -d "$rootdir" ]]; then
+ echo "Directory '$rootdir' does not exist!" >&2
+ exit 1
+fi
+
+node_hostname() {
+ local -r number="$1"
+
+ echo "node$((number + 1))"
+}
+
+node_ipaddr() {
+ local -r number="$1"
+
+ echo "$networkprefix.$((number + 10))"
+}
+
+setup_node() {
+ local -r number="$1"
+ local -r nodedir=$rootdir/$(node_hostname $number)
+
+ if [[ ! -d $nodedir ]]; then
+ mkdir $nodedir
+ fi
+
+ mkdir -vp \
+ $nodedir/etc/default \
+ $nodedir/var/lock\
+ $nodedir/var/{lib,log,run}/ganeti
+
+ GANETI_HOSTNAME=$(node_hostname $number) \
+ GANETI_ROOTDIR=$nodedir \
+ $ensure_dirs
+
+ local -r daemon_args="-b $(node_ipaddr $number)"
+
+ cat > $nodedir/etc/default/ganeti <<EOF
+ # Default settings for virtual node $i
+ NODED_ARGS='$daemon_args'
+ MASTERD_ARGS=''
+ RAPI_ARGS='$daemon_args'
+ CONFD_ARGS='$daemon_args'
+
+ export GANETI_ROOTDIR='$nodedir'
+ export GANETI_HOSTNAME='$(node_hostname $number)'
+EOF
+
+ cat > $nodedir/cmd <<EOF
+#!/bin/bash
+
+export GANETI_ROOTDIR='$nodedir'
+export GANETI_HOSTNAME='$(node_hostname $number)'
+
+bash -c "\$*"
+EOF
+ chmod +x $nodedir/cmd
+}
+
+setup_all_nodes() {
+ for ((i=0; i < nodecount; ++i)); do
+ setup_node $i
+ done
+}
+
+setup_etc_hosts() {
+ local -r tmpfile=/etc/hosts.vcluster.$$.$RANDOM
+ {
+ egrep -v "^$networkprefix.[[:digit:]]+[[:space:]]" /etc/hosts
+ echo "$networkprefix.1 cluster"
+ for ((i=0; i < nodecount; ++i)); do
+ echo "$(node_ipaddr $i) $(node_hostname $i)"
+ done
+ for ((i=1; i < 10; ++i)); do
+ echo "$networkprefix.$((i + 50)) instance$i"
+ done
+ } > $tmpfile && \
+ chmod 0644 $tmpfile && \
+ mv -v $tmpfile /etc/hosts
+}
+
+setup_network_interfaces() {
+ local ipaddr
+
+ #ip addr del "$networkprefix.1" dev eth0 || :
+ #ip addr add "$networkprefix.1" dev eth0
+
+ for ((i=0; i < nodecount; ++i)); do
+ ipaddr="$(node_ipaddr $i)/32"
+ ip addr del "$ipaddr" dev eth0 || :
+ ip addr add "$ipaddr" dev eth0
+ done
+}
+
+#set -x
+setup_all_nodes
+setup_etc_hosts
+setup_network_interfaces
+
+exit 0
+
+# vim: set sw=2 sts=2 et :
--
1.7.6
