diskimage-builder/diskimage_builder/elements/rax-nova-agent/install.d/10-nova-agent
Ian Wienand 97c01e48ed Move elements & lib relative to diskimage_builder package
Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).

The problem with this is that editable/development installs (pip -e)
do *not* install data_files.  Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.

data_files is really the wrong thing to use for what are essentially
assets of the program.  data_files install works well for things like
config-files, init.d files or dropping documentation files.

By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from.  In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].

We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.

Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.

I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.

Unfortunately, this has to move to work with setuptools.  You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.

[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do.  Essentially for us it's returning
__file__.

Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
2016-11-01 17:27:41 -07:00

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#!/bin/bash
# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
#
# See the License for the specific language governing permissions and
# limitations under the License.
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
cd /tmp/nova-agent
./installer.sh
cat > /etc/cloud/cloud.cfg.d/80_restart_network.cfg <<'EOF'
# Restart networking if it's got no IP. This is to catch if we're on RAX
# and the baked in dhcp config didn't work, but is now probably reconfigured
# by nova-agent
runcmd:
- ip addr show eth0 | grep inet || ( ifdown -a ; ifup -a )
EOF
case "$DISTRO_NAME" in
'ubuntu'|'debian')
# cloud-init / nova-agent sad panda hacks
cat > /etc/init/nova-agent.conf <<'EOF'
# nova-agent - start before cloud-init and hup network interfaces
start on starting cloud-init-local
task
console output
script
/etc/init.d/nova-agent start
sleep 13
ifdown -a
ifup -a
end script
EOF
cat > /etc/init/xe-linux-distribution.conf <<'EOF'
# xe-linux-distribution - start the xentools before nova-agent runs
start on starting nova-agent
task
console output
script
/etc/init.d/xe-linux-distribution start
sleep 2
end script
EOF
# stop nova-agent from starting twice since we start it from upstart now
update-rc.d -f nova-agent remove
update-rc.d -f xe-linux-distribution remove
# console fix for PV Ubuntus
cat > /etc/init/hvc0.conf <<'EOF'
# hvc0 - getty
#
# This service maintains a getty on hvc0 from the point the system is
# started until it is shut down again.
start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]
respawn
exec /sbin/getty -L 115200 hvc0 vt102
EOF
;;
'fedora'|'centos'|'centos7'|'opensuse')
cat > /usr/local/bin/run-nova-agent.sh <<'EOF'
#!/bin/bash
/etc/init.d/nova-agent start
sleep 13
ifdown -a
ifup -a
EOF
chmod 0755 /usr/local/bin/run-nova-agent.sh
cat > /usr/local/bin/run-xe-linux-distribution.sh <<'EOF'
#!/bin/bash
/etc/init.d/xe-linux-distribution start
sleep 2
EOF
chmod 0755 /usr/local/bin/run-xe-linux-distribution.sh
cat > /etc/systemd/system/nova-agent.service <<EOF
[Unit]
Description=Rackspace nova-agent
Before=cloud-init-local
Wants=cloud-init-local
[Service]
ExecStart=/usr/local/bin/run-nova-agent.sh
[Install]
WantedBy=multi-user.target
EOF
cat > /etc/systemd/system/xe-linux-distribution.service <<'EOF'
[Unit]
Description=xentools agent
Before=nova-agent
Wants=nova-agent
[Service]
ExecStart=/usr/local/bin/run-xe-linux-distribution.sh
[Install]
WantedBy=multi-user.target
EOF
# stop nova-agent from starting twice since we start it from systemd now
chkconfig nova-agent off
chkconfig xe-linux-distribution off
systemctl enable nova-agent
systemctl enable xe-linux-distribution
;;
esac