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aws-vpc-move-ip.8790
aws-vpc-move-ip
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File aws-vpc-move-ip of Package aws-vpc-move-ip.8790
#!/bin/sh # # # OCF resource agent to move an IP address within a VPC in the AWS # # Copyright (c) 2017 Markus Guertler (SUSE) # Based on code of Adam Gandelman (GitHub ec2-resource-agents/elasticip) # All Rights Reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License # along with this program; if not, write the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. # ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs # Defaults OCF_RESKEY_awscli_default="/usr/bin/aws" OCF_RESKEY_profile_default="default" OCF_RESKEY_monapi_default="false" : ${OCF_RESKEY_awscli=${OCF_RESKEY_awscli_default}} : ${OCF_RESKEY_profile=${OCF_RESKEY_profile_default}} : ${OCF_RESKEY_monapi=${OCF_RESKEY_monapi_default}} ####################################################################### USAGE="usage: $0 {start|stop|status|meta-data}"; ############################################################################### ############################################################################### # # Functions # ############################################################################### metadata() { cat <<END <?xml version="1.0"?> <!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> <resource-agent name="aws-vpc-move-ip"> <version>2.0</version> <longdesc lang="en"> Resource Agent to move IP addresses within a VPC of the Amazon Webservices EC2 by changing an entry in an specific routing table </longdesc> <shortdesc lang="en">Move IP within a VPC of the AWS EC2</shortdesc> <parameters> <parameter name="awscli"> <longdesc lang="en"> Path to command line tools for AWS </longdesc> <shortdesc lang="en">Path to AWS CLI tools</shortdesc> <content type="string" default="${OCF_RESKEY_awscli_default}" /> </parameter> <parameter name="profile"> <longdesc lang="en"> Valid AWS CLI profile name (see ~/.aws/config and 'aws configure') </longdesc> <shortdesc lang="en">profile name</shortdesc> <content type="string" default="${OCF_RESKEY_profile_default}" /> </parameter> <parameter name="ip" required="1"> <longdesc lang="en"> VPC private IP address </longdesc> <shortdesc lang="en">VPC private IP</shortdesc> <content type="string" default="" /> </parameter> <parameter name="address"> <longdesc lang="en"> Deprecated IP address param. Use the ip param instead. </longdesc> <shortdesc lang="en">Deprecated VPC private IP Address</shortdesc> <content type="string" default="" /> </parameter> <parameter name="routing_table" required="1"> <longdesc lang="en"> Name of the routing table, where the route for the IP address should be changed, i.e. rtb-... </longdesc> <shortdesc lang="en">routing table name</shortdesc> <content type="string" default="" /> </parameter> <parameter name="interface" required="1"> <longdesc lang="en"> Name of the network interface, i.e. eth0 </longdesc> <shortdesc lang="en">network interface name</shortdesc> <content type="string" default="eth0" /> </parameter> <parameter name="monapi"> <longdesc lang="en"> Enable enhanced monitoring using AWS API calls to check route table entry </longdesc> <shortdesc lang="en">Enhanced Monitoring</shortdesc> <content type="boolean" default="${OCF_RESKEY_monapi_default}" /> </parameter> </parameters> <actions> <action name="start" timeout="180s" /> <action name="stop" timeout="180s" /> <action name="monitor" depth="0" timeout="30s" interval="60s" /> <action name="validate-all" timeout="5s" /> <action name="meta-data" timeout="5s" /> </actions> </resource-agent> END } ec2ip_set_address_param_compat(){ # Include backward compatibility for the deprecated address parameter if [ -z "$OCF_RESKEY_ip" ] && [ -n "$OCF_RESKEY_address" ]; then OCF_RESKEY_ip="$OCF_RESKEY_address" fi } ec2ip_validate() { for cmd in aws ip curl; do check_binary "$cmd" done if [ -z "$OCF_RESKEY_profile" ]; then ocf_exit_reason "profile parameter not set" return $OCF_ERR_CONFIGURED fi EC2_INSTANCE_ID="$(curl -s http://169.254.169.254/latest/meta-data/instance-id)" if [ -z "${EC2_INSTANCE_ID}" ]; then ocf_exit_reason "Instance ID not found. Is this a EC2 instance?" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } ec2ip_monitor() { if ocf_is_true ${OCF_RESKEY_monapi} || [ "$__OCF_ACTION" = "start" ] || ocf_is_probe; then ocf_log info "monitor: check routing table (API call)" cmd="$OCF_RESKEY_awscli --profile $OCF_RESKEY_profile --output text ec2 describe-route-tables --route-table-ids $OCF_RESKEY_routing_table" ocf_log debug "executing command: $cmd" ROUTE_TO_INSTANCE="$($cmd | grep $OCF_RESKEY_ip | awk '{ print $3 }')" if [ -z "$ROUTE_TO_INSTANCE" ]; then ROUTE_TO_INSTANCE="<unknown>" fi if [ "$EC2_INSTANCE_ID" != "$ROUTE_TO_INSTANCE" ];then ocf_log warn "not routed to this instance ($EC2_INSTANCE_ID) but to instance $ROUTE_TO_INSTANCE" return $OCF_NOT_RUNNING fi else ocf_log debug "monitor: Enhanced Monitoring disabled - omitting API call" fi cmd="ip addr show to $OCF_RESKEY_ip up" ocf_log debug "executing command: $cmd" RESULT=$($cmd | grep "$OCF_RESKEY_ip") if [ -z "$RESULT" ]; then ocf_log warn "IP $OCF_RESKEY_ip not assigned to running interface" return $OCF_NOT_RUNNING fi ocf_log debug "route in VPC and address assigned" return $OCF_SUCCESS } ec2ip_drop() { cmd="ip addr delete ${OCF_RESKEY_ip}/32 dev $OCF_RESKEY_interface" ocf_log debug "executing command: $cmd" $cmd rc=$? if [ "$rc" -gt 0 ]; then ocf_log warn "command failed, rc $rc" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } ec2ip_get_and_configure() { # Adjusting the routing table cmd="$OCF_RESKEY_awscli --profile $OCF_RESKEY_profile --output text ec2 replace-route --route-table-id $OCF_RESKEY_routing_table --destination-cidr-block ${OCF_RESKEY_ip}/32 --instance-id $EC2_INSTANCE_ID" ocf_log debug "executing command: $cmd" $cmd rc=$? if [ "$rc" != 0 ]; then ocf_log warn "command failed, rc: $rc" return $OCF_ERR_GENERIC fi # Reconfigure the local ip address ec2ip_drop ip addr add "${OCF_RESKEY_ip}/32" dev $OCF_RESKEY_interface rc=$? if [ $rc != 0 ]; then ocf_log warn "command failed, rc: $rc" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } ec2ip_stop() { ocf_log info "EC2: Bringing down IP address $OCF_RESKEY_ip" ec2ip_monitor if [ $? = $OCF_NOT_RUNNING ]; then ocf_log info "EC2: Address $OCF_RESKEY_ip already down" return $OCF_SUCCESS fi ec2ip_drop if [ $? != $OCF_SUCCESS ]; then return $OCF_ERR_GENERIC fi ec2ip_monitor if [ $? != $OCF_NOT_RUNNING ]; then ocf_log error "EC2: Couldn't bring down IP address $OCF_RESKEY_ip on interface $OCF_RESKEY_interface." return $OCF_ERR_GENERIC fi ocf_log info "EC2: Successfully brought down $OCF_RESKEY_ip" return $OCF_SUCCESS } ec2ip_start() { ocf_log info "EC2: Moving IP address $OCF_RESKEY_ip to this host by adjusting routing table $OCF_RESKEY_routing_table" ec2ip_monitor if [ $? = $OCF_SUCCESS ]; then ocf_log info "EC2: $OCF_RESKEY_ip already started" return $OCF_SUCCESS fi ocf_log info "EC2: Adjusting routing table and locally configuring IP address" ec2ip_get_and_configure rc=$? if [ $rc != $OCF_SUCCESS ]; then ocf_log error "Received $rc from 'aws'" return $OCF_ERR_GENERIC fi ec2ip_monitor if [ $? != $OCF_SUCCESS ]; then ocf_log error "EC2: IP address couldn't be configured on this host (IP: $OCF_RESKEY_ip, Interface: $OCF_RESKEY_interface)" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } ############################################################################### # # MAIN # ############################################################################### case $__OCF_ACTION in meta-data) metadata exit $OCF_SUCCESS ;; usage|help) echo $USAGE exit $OCF_SUCCESS ;; esac if ! ocf_is_root; then ocf_log err "You must be root for $__OCF_ACTION operation." exit $OCF_ERR_PERM fi ec2ip_set_address_param_compat ec2ip_validate case $__OCF_ACTION in start) ec2ip_start;; stop) ec2ip_stop;; monitor) ec2ip_monitor;; validate-all) exit $?;; *) echo $USAGE exit $OCF_ERR_UNIMPLEMENTED ;; esac
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