ARGUMENTS = “$TEMPLATE -m -p 5 -u”
COMMAND = “/var/lib/one/remotes/hooks/ft/host_error.rb”
NAME = “host_error”
STATE = “ERROR”
REMOTE = “no”
RESOURCE = HOST
TYPE = state
/var/lib/one/remotes/hooks/ft
I’ve comment the line “echo ““Fence host not configured, please edit ft/fence_host.sh”” && exit 1” and added the fence action to the last line:
fence_ilo -a $FENCE_IP -l oneadmin -p -o
Can anyone tell me did I configure something wrong? I’ve searched on both OpenNebula site and the forum but there is no topic about how to configure the FENCE_IP .
Any help will be very appriciated.
Hi, I use this script with FENCE_IP on each host in template.
#!/bin/bash
# -------------------------------------------------------------------------- #
# Copyright 2002-2019, OpenNebula Project, OpenNebula Systems #
# #
# 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. #
#--------------------------------------------------------------------------- #
##############################################################################
# WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!
#
# This script needs to be modified to enable fencing of the host. By default it
# will fail, as the first line is 'exit 1'. You will need to remove it.
#
# In order to perform the fencing, you will probably need to install a fencing
# utility. They are typically found in: fence-agents-all (CentOS) and fence-
# agents (Ubuntu). They come with many utilities: fence_ilo, fence_ipmilan,
# fence_apc, etc...
#
# To call the fencing utility, you will need to pass some parameters, which are
# typically the iLO IP of the host, etc. We recommend you enter this information
# in the host's template, and pick it up using the xpath example below. AS AN
# EXAMPLE (only an example) the script below expects that you have defined a
# parameter called FENCE_IP in the Host's template, and it will rely on that to
# call the fencing mechanism. You should customize this to your needs. It is
# perfectly OK to discard the code below and use a different mechanism, like
# storing the information required to perform the fencing in a separate CMDB,
# etc. However, you will probably need to get the host's NAME, which should be
# done as shown below.
#
# WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!
#############################################################################
# @param $1 the host information in base64
# @return 0 on success. Make sure this script does not return 0 if it fails.
#-------------------------------------------------------------------------------
# Get host parameters with XPATH
#-------------------------------------------------------------------------------
if [ -z "$ONE_LOCATION" ]; then
XPATH=/var/lib/one/remotes/datastore/xpath.rb
else
XPATH=$ONE_LOCATION/var/remotes/datastore/xpath.rb
fi
if [ ! -x "$XPATH" ]; then
echo "XPATH not found: $XPATH"
exit 1
fi
XPATH="${XPATH} -b $1"
unset i j XPATH_ELEMENTS
while IFS= read -r -d '' element; do
XPATH_ELEMENTS[i++]="$element"
done < <($XPATH /HOST/ID \
/HOST/NAME \
/HOST/TEMPLATE/FENCE_IP )
HOST_ID="${XPATH_ELEMENTS[j++]}"
NAME="${XPATH_ELEMENTS[j++]}"
FENCE_IP="${XPATH_ELEMENTS[j++]}"
echo "Host $HOST_ID $NAME: State Error!" | mail -s "$HOST_ID $NAME Error!" admin@feldhost.cz
#-------------------------------------------------------------------------------
# Fence
#-------------------------------------------------------------------------------
if [ -z "$FENCE_IP" ]; then
echo "Fence ip not found"
exit 1
fi
# Example:
# fence_ilo -a $FENCE_IP -l <username> -p <password>
You can test and debug this by “VM Reschedule” function in opennebula. You need to have host in same cluster with sufficient resources to handle VM.
