x/openstack-resource-agents
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989c898fe2
openstack-resource-agents/ocf/nova-novnc
Martin Loschwitz 989c898fe2 Initial checkin of this repository
2012-08-29 01:15:24 +00:00

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#!/bin/sh
#
#
# OpenStack Nova VNC Console (nova-novncproxy)
#
# Description: Manages an OpenStack Nova VNC Console (nova-novncproxy) process as an HA resource
#
# Authors: Sébastien Han
# Mainly inspired by the Glance API resource agent written by Martin Gerhard Loschwitz from Hastexo: http://goo.gl/whLpr
#
# Support: openstack@lists.launchpad.net
# License: Apache Software License (ASL) 2.0
#
#
# See usage() function below for more details ...
#
# OCF instance parameters:
# OCF_RESKEY_binary
# OCF_RESKEY_config
# OCF_RESKEY_user
# OCF_RESKEY_pid
# OCF_RESKEY_monitor_binary
# OCF_RESKEY_console_port
# OCF_RESKEY_web
# OCF_RESKEY_additional_parameters
#######################################################################
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
#######################################################################
# Fill in some defaults if no values are specified
OCF_RESKEY_binary_default="nova-novncproxy"
OCF_RESKEY_config_default="/etc/nova/nova.conf"
OCF_RESKEY_user_default="nova"
OCF_RESKEY_pid_default="$HA_RSCTMP/$OCF_RESOURCE_INSTANCE.pid"
OCF_RESKEY_monitor_binary_default="netstat"
OCF_RESKEY_console_port_default="6080"
OCF_RESKEY_web_default="/usr/share/novnc/"
: ${OCF_RESKEY_binary=${OCF_RESKEY_binary_default}}
: ${OCF_RESKEY_config=${OCF_RESKEY_config_default}}
: ${OCF_RESKEY_user=${OCF_RESKEY_user_default}}
: ${OCF_RESKEY_pid=${OCF_RESKEY_pid_default}}
: ${OCF_RESKEY_monitor_binary=${OCF_RESKEY_monitor_binary_default}}
: ${OCF_RESKEY_console_port=${OCF_RESKEY_console_port_default}}
: ${OCF_RESKEY_web=${OCF_RESKEY_web_default}}
#######################################################################
usage() {
cat <<UEND
usage: $0 (start|stop|validate-all|meta-data|status|monitor)
$0 manages an OpenStack Nova VNC Console (nova-novncproxy) process as an HA resource
The 'start' operation starts the identity service.
The 'stop' operation stops the identity service.
The 'validate-all' operation reports whether the parameters are valid
The 'meta-data' operation reports this RA's meta-data information
The 'status' operation reports whether the identity service is running
The 'monitor' operation reports whether the identity service seems to be working
UEND
}
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="nova-novncproxy">
<version>1.0</version>
<longdesc lang="en">
Resource agent for the OpenStack Nova VNC Console Service (nova-novncproxy)
May manage a nova-novncproxy instance or a clone set that
creates a distributed nova-novncproxy cluster.
</longdesc>
<shortdesc lang="en">Manages the OpenStack Nova VNC Console (nova-novncproxy)</shortdesc>
<parameters>
<parameter name="binary" unique="0" required="0">
<longdesc lang="en">
Location of the OpenStack Nova VNC Console server binary (nova-novncproxy)
</longdesc>
<shortdesc lang="en">OpenStack Nova VNC Console server binary (nova-novncproxy)</shortdesc>
<content type="string" default="${OCF_RESKEY_binary_default}" />
</parameter>
<parameter name="config" unique="0" required="0">
<longdesc lang="en">
Location of the OpenStack Nova VNC Console (nova-novncproxy) configuration file
</longdesc>
<shortdesc lang="en">OpenStack Nova VNC Console (nova-novncproxy registry) config file</shortdesc>
<content type="string" default="${OCF_RESKEY_config_default}" />
</parameter>
<parameter name="user" unique="0" required="0">
<longdesc lang="en">
User running OpenStack Nova VNC Console (nova-novncproxy)
</longdesc>
<shortdesc lang="en">OpenStack Nova VNC Console (nova-novncproxy) user</shortdesc>
<content type="string" default="${OCF_RESKEY_user_default}" />
</parameter>
<parameter name="console_port" unique="0" required="0">
<longdesc lang="en">
VNC console type running: nova-novnc or nova-xvpvncproxy
</longdesc>
<shortdesc lang="en">OpenStack Nova VNC Console (nova-novncproxy) console type</shortdesc>
<content type="integer" default="${OCF_RESKEY_console_port_default}" />
</parameter>
<parameter name="web" unique="0" required="0">
<longdesc lang="en">
VNC console web URL
</longdesc>
<shortdesc lang="en">OpenStack Nova VNC Console (nova-novncproxy) web URL</shortdesc>
<content type="string" default="${OCF_RESKEY_web_default}" />
</parameter>
<parameter name="pid" unique="0" required="0">
<longdesc lang="en">
The pid file to use for this OpenStack Nova VNC Console (nova-novncproxy) instance
</longdesc>
<shortdesc lang="en">OpenStack Nova VNC Console (nova-novncproxy) pid file</shortdesc>
<content type="string" default="${OCF_RESKEY_pid_default}" />
</parameter>
<parameter name="additional_parameters" unique="0" required="0">
<longdesc lang="en">
Additional parameters to pass on to the OpenStack Nova VNC Console (nova-novncproxy)
</longdesc>
<shortdesc lang="en">Additional parameters for nova-novncproxy</shortdesc>
<content type="string" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="10" />
<action name="stop" timeout="10" />
<action name="status" timeout="10" />
<action name="monitor" timeout="5" interval="10" />
<action name="validate-all" timeout="5" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
END
}
#######################################################################
# Functions invoked by resource manager actions
nova_vnc_console_validate() {
local rc
check_binary $OCF_RESKEY_binary
# A config file on shared storage that is not available
# during probes is OK.
if [ ! -f $OCF_RESKEY_config ]; then
if ! ocf_is_probe; then
ocf_log err "Config $OCF_RESKEY_config doesn't exist"
return $OCF_ERR_INSTALLED
fi
ocf_log_warn "Config $OCF_RESKEY_config not available during a probe"
fi
getent passwd $OCF_RESKEY_user >/dev/null 2>&1
rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "User $OCF_RESKEY_user doesn't exist"
return $OCF_ERR_INSTALLED
fi
true
}
nova_vnc_console_status() {
local pid
local rc
if [ ! -f $OCF_RESKEY_pid ]; then
ocf_log info "OpenStack Nova VNC Console (nova-novncproxy) is not running"
return $OCF_NOT_RUNNING
else
pid=`cat $OCF_RESKEY_pid`
fi
ocf_run -warn kill -s 0 $pid
rc=$?
if [ $rc -eq 0 ]; then
return $OCF_SUCCESS
else
ocf_log info "Old PID file found, but OpenStack Nova VNC Console (nova-novncproxy) is not running"
return $OCF_NOT_RUNNING
fi
}
nova_vnc_console_monitor() {
local rc
local token
nova_vnc_console_status
rc=$?
# If status returned anything but success, return that immediately
if [ $rc -ne $OCF_SUCCESS ]; then
return $rc
fi
# Check whether we are supposed to monitor by logging into nova-novncproxy
# and do it if that's the case.
if ! check_binary $OCF_RESKEY_monitor_binary; then
ocf_log warn "$OCF_RESKEY_monitor_binary missing, can not monitor!"
else
VNC_LIST_CHECK=`$OCF_RESKEY_monitor_binary -a | grep "$OCF_RESKEY_console_port" | grep -q "LISTEN"`
fi
rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "Nova VNC Console doesn't seem to listen on his default port: $rc"
return $OCF_NOT_RUNNING
fi
ocf_log debug "OpenStack Nova VNC Console (nova-novncproxy) monitor succeeded"
return $OCF_SUCCESS
}
nova_vnc_console_start() {
local rc
nova_vnc_console_status
rc=$?
if [ $rc -eq $OCF_SUCCESS ]; then
ocf_log info "OpenStack Nova VNC Console (nova-novncproxy) already running"
return $OCF_SUCCESS
fi
# run the actual nova-novncproxy daemon. Don't use ocf_run as we're sending the tool's output
# straight to /dev/null anyway and using ocf_run would break stdout-redirection here.
su ${OCF_RESKEY_user} -s /bin/sh -c "${OCF_RESKEY_binary} --flagfile=$OCF_RESKEY_config --web /usr/share/novnc/ \
$OCF_RESKEY_additional_parameters"' >> /dev/null 2>&1 & echo $!' > $OCF_RESKEY_pid
# Spin waiting for the server to come up.
# Let the CRM/LRM time us out if required
while true; do
nova_vnc_console_monitor
rc=$?
[ $rc -eq $OCF_SUCCESS ] && break
if [ $rc -ne $OCF_NOT_RUNNING ]; then
ocf_log err "OpenStack Nova VNC Console (nova-novncproxy) start failed"
exit $OCF_ERR_GENERIC
fi
sleep 1
done
ocf_log info "OpenStack Nova VNC Console (nova-novncproxy) started"
return $OCF_SUCCESS
}
nova_vnc_console_stop() {
local rc
local pid
nova_vnc_console_status
rc=$?
if [ $rc -eq $OCF_NOT_RUNNING ]; then
ocf_log info "OpenStack Nova VNC Console (nova-novncproxy) already stopped"
return $OCF_SUCCESS
fi
# Try SIGTERM
pid=`cat $OCF_RESKEY_pid`
ocf_run kill -s TERM $pid
rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "OpenStack Nova VNC Console (nova-novncproxy) couldn't be stopped"
exit $OCF_ERR_GENERIC
fi
# stop waiting
shutdown_timeout=15
if [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then
shutdown_timeout=$((($OCF_RESKEY_CRM_meta_timeout/1000)-5))
fi
count=0
while [ $count -lt $shutdown_timeout ]; do
nova_vnc_console_status
rc=$?
if [ $rc -eq $OCF_NOT_RUNNING ]; then
break
fi
count=`expr $count + 1`
sleep 1
ocf_log debug "OpenStack Nova VNC Console (nova-novncproxy) still hasn't stopped yet. Waiting ..."
done
nova_vnc_console_status
rc=$?
if [ $rc -ne $OCF_NOT_RUNNING ]; then
# SIGTERM didn't help either, try SIGKILL
ocf_log info "OpenStack Nova VNC Console (nova-novncproxy) failed to stop after ${shutdown_timeout}s \
using SIGTERM. Trying SIGKILL ..."
ocf_run kill -s KILL $pid
fi
ocf_log info "OpenStack Nova VNC Console (nova-novncproxy) stopped"
rm -f $OCF_RESKEY_pid
return $OCF_SUCCESS
}
#######################################################################
case "$1" in
meta-data) meta_data
exit $OCF_SUCCESS;;
usage|help) usage
exit $OCF_SUCCESS;;
esac
# Anything except meta-data and help must pass validation
nova_vnc_console_validate || exit $?
# What kind of method was invoked?
case "$1" in
start) nova_vnc_console_start;;
stop) nova_vnc_console_stop;;
status) nova_vnc_console_status;;
monitor) nova_vnc_console_monitor;;
validate-all) ;;
*) usage
exit $OCF_ERR_UNIMPLEMENTED;;
esac
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