697 lines
20 KiB
Bash
697 lines
20 KiB
Bash
# We built on top of tiny-cloud
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. /lib/tiny-cloud/common
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IMDS_ENDPOINT="169.254.169.254"
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. /lib/tiny-cloud/cloud/"$CLOUD"/imds
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_imds() {
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wget --quiet --timeout 1 --output-document - \
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--header "$(_imds_header)" \
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"http://$IMDS_ENDPOINT/$IMDS_URI/$1$IMDS_QUERY"
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}
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# Todo: This should go into a yaml file
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query_imds() {
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MAC=$(_imds meta-data/mac)
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AVAILABILITY_ZONE=$(_imds meta-data/placement/availability-zone)
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REGION=$(echo ${AVAILABILITY_ZONE} | sed "s/[a-z]$//")
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INSTANCE_ID=$(_imds meta-data/instance-id)
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cat <<EOF >> /var/lib/cloud/meta-data
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AVAILABILITY_ZONE=$AVAILABILITY_ZONE
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REGION=$REGION
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INSTANCE_ID=$INSTANCE_ID
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IP_ADDRESS=$(_imds meta-data/local-ipv4)
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PUBLIC_IP_ADDRESS=$(_imds meta-data/public-ipv4 || true)
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DEFAULT_GW_INTERFACE=$(ip -o route get 8.8.8.8 | awk '{print $5}')
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MAC=$MAC
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VPC_CIDR_RANGE=$(_imds meta-data/network/interfaces/macs/${MAC}/vpc-ipv4-cidr-block)
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SUBNET=$(_imds meta-data/network/interfaces/macs/${MAC}/subnet-ipv4-cidr-block)
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_META_HOSTNAME=$(_imds meta-data/hostname)
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DOMAIN_NAME=\${_META_HOSTNAME#*.}
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AWS_ACCOUNT_ID=$(_imds meta-data/network/interfaces/macs/${MAC}/owner-id)
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INSTANCE_LIFE_CYCLE=$(_imds meta-data/instance-life-cycle)
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INSTANCE_TYPE=$(_imds meta-data/instance-type)
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EOF
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}
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# Todo: This should go into a yaml file
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get_tags() {
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# via metadata AWS restricts tags to NOT have " " or "/" ;-(
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# Replace all /:.- with _ for valid variable names
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for key in $(_imds meta-data/tags/instance); do
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value="$(_imds meta-data/tags/instance/$key)"
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key=$(echo ${key//[\/:.-]/_} | tr '[:lower:]' '[:upper:]')
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echo "$key=\"$value\"" >> /var/lib/cloud/meta-data
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done
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#while read _key value; do
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# key=$(echo ${_key//[\/:.-]/_} | tr '[:lower:]' '[:upper:]')
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# echo "$key=\"$value\"" >> /var/lib/cloud/meta-data
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#done < <(aws ec2 describe-tags --filters "Name=resource-id,Values=${INSTANCE_ID}" --query 'Tags[*].[Key,Value]' --region $REGION --output text)
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}
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# extract user-data args and cloud meta-data into /var/lib/cloud/meta-data
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get_meta_data() {
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if [ ! -f /var/lib/cloud/meta-data ]; then
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echo '#!/bin/bash' > /var/lib/cloud/meta-data
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query_imds
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get_tags
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fi
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if [ ! -f /etc/cloudbender.conf ]; then
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bash /var/lib/cloud/user-data extract_parameters
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fi
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}
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import_meta_data() {
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. /etc/cloudbender.conf
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. /var/lib/cloud/meta-data
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export AWS_DEFAULT_REGION=$REGION
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export AWS_DEFAULT_OUTPUT=text
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# some basic logic
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if [ "$DEBUG" == "None" -o "$DEBUG" == "False" ]; then
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unset DEBUG
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LAUNCH_HOOK="CloudBenderLaunchHook"
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fi
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# Workaround for current CFN ASG_<parameter> hack
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_key=$(echo $AWS_CLOUDFORMATION_LOGICAL_ID | tr '[:lower:]' '[:upper:]')
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[ -n "$(eval echo \$${_key}_CUSTOMHOSTNAME)" ] && CUSTOMHOSTNAME="$(eval echo \$${_key}_CUSTOMHOSTNAME)"
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[ -n "$(eval echo \$${_key}_VOLUMES)" ] && VOLUMES="$(eval echo \$${_key}_VOLUMES)"
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return 0
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}
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# setup_instance, various OS tweaks impossible to do via AMI baking
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setup_instance() {
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# create machine-id to emulate systemd
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[ -f /etc/machine-id ] || uuidgen > /etc/machine-id
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# add and mount bpf file system
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add_once /etc/fstab "bpffs /sys/fs/bpf bpf rw,nosuid,nodev,noexec,relatime,mode=700 0 0"
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mount -a
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# Ensure certain mounts are shared to run containers later, eg. cilium, falco
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mount --make-shared /sys/fs/cgroup
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mount --make-shared /sys/fs/bpf
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mount --make-shared /sys
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add_once /etc/hosts "${IP_ADDRESS} ${_META_HOSTNAME} ${HOSTNAME}"
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# Set system wide default region for boto3
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echo "export AWS_DEFAULT_REGION=$REGION" > /etc/profile.d/aws.sh
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# workaround for dhcpcd / openresolv to omit search domain if equal to domain breaking DNS resolution of shortnames for eg. etcd and kube-apiserver
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add_once /etc/resolv.conf "search $DOMAIN_NAME"
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case "$CLOUD" in
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aws)
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setup_sns_alarms
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;;
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*)
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ewarn "Unsupported Cloud: $CLOUD"
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# return 1
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;;
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esac
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}
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################
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# IAM SSH KEYS #
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################
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configure_sshd() {
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# Change Listen port
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local port=${SSHPORT:-"22"}
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[ -w /etc/ssh/sshd_config ] && sed -i -e 's/^[\s#]*Port\s.*/Port '$port'/' /etc/ssh/sshd_config
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case "$CLOUD" in
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aws)
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# on AWS call IAM for allowed groups and actual keys
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local group=${SSHKEYIAMGROUP:-""}
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local role=${SSHKEYIAMROLE:-"arn:aws:iam::000000000000:role/Undefined"}
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[ $role == "arn:aws:iam::000000000000:role/Undefined" ] && role=""
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if [ -n "$group" ]; then
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# Configure SSHD
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sed -i -e 's,^[\s#]*AuthorizedKeysCommand\s.*,AuthorizedKeysCommand /usr/sbin/get_iam_sshkeys.py --user %u --group '$group' --iamRole "'$role'",' /etc/ssh/sshd_config
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sed -i -e 's,^[\s#]*AuthorizedKeysCommandUser\s.*,AuthorizedKeysCommandUser nobody,' /etc/ssh/sshd_config
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ebegin "added $group to SSH admin keys"
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fi
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;;
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*)
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ewarn "Unsupported Cloud: $CLOUD"
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# return 1
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;;
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esac
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}
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# Persist host keys
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# has to run before sshd starts up first time !
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persistent_sshd_hostkeys() {
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# Top level is artifact to be able to limit the SSM IAM permissions
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local ssm_path=$1
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local key_types="ecdsa ed25519 rsa"
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# try to get none existing host keys from SSM
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RET=0
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for key in $key_types; do
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if [ ! -f /etc/ssh/ssh_host_${key}_key.pub -a ! -f /etc/ssh/ssh_host_${key}_key ]; then
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(aws ssm get-parameters --names "${ssm_path}/host_${key}.tgz" --with-decryption --query 'Parameters[0].Value' | base64 -d | tar xzf - --directory=/ 1>/dev/null 2>&1) \
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&& log -t user-data info "Restored ssh_host_${key}_key from SSM" || RET=1
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fi
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done
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# Update keys if any key couldn't be restored from SSM
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if [ $RET -eq 1 ]; then
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# generate any missing keys
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ssh-keygen -A
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for key in $key_types; do
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if [ -r /etc/ssh/ssh_host_${key}_key -a -r /etc/ssh/ssh_host_${key}_key.pub ]; then
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(aws ssm put-parameter --name "${ssm_path}/host_${key}.tgz" --type SecureString --value \
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"$(tar czf - /etc/ssh/ssh_host_${key}_key /etc/ssh/ssh_host_${key}_key.pub | base64)" --overwrite) \
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&& log -t user-data info "Uploaded ssh_host_${key}_key to SSM"
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fi
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done
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fi
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}
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# either plain custom hostname or
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# - `unique:<format_string>` eg. `uniq:kube-worker-{:02}` -> kube-worker-01
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# - `myownip: <prefix>` eg. `myip: nodegroup-` -> nodegroup-1.2.3.4
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set_hostname() {
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local custom_hostname=$(echo $1 | awk -F. '{ print $1 }')
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if [ -n "$custom_hostname" ]; then
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if [[ "$custom_hostname" == unique:* ]]; then
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new_hostname=$(uniq_hostname.py $AWS_EC2LAUNCHTEMPLATE_ID $INSTANCE_ID ${custom_hostname##unique:})
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elif [[ "$custom_hostname" == myownip:* ]]; then
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local _ip=$(echo $IP_ADDRESS | sed -e 's/\./-/g')
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new_hostname=$(echo "${custom_hostname##myownip:}$_ip")
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else
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new_hostname=$custom_hostname
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fi
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FQDN="${new_hostname}.${DOMAIN_NAME}"
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echo ${new_hostname} > /etc/hostname
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hostname $new_hostname
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export HOSTNAME=$new_hostname
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# add new hostname to hosts
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add_once /etc/hosts "${IP_ADDRESS} ${FQDN} ${new_hostname}"
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log -t user-data info "Hostname updated to ${new_hostname}."
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# hup syslog to update loghost macro
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/etc/init.d/syslog-ng reload
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# update Route53 entry for VPC internal FQDN
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route53.py --fqdn $FQDN --record $IP_ADDRESS
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# update our Name Tag to FQDN or PrivateDNSName to allow easy indentification in the AWS UI
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aws ec2 create-tags --resources $INSTANCE_ID --tags Key=Name,Value=$FQDN
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else
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aws ec2 create-tags --resources $INSTANCE_ID --tags Key=Name,Value=${HOSTNAME}.${REGION}.compute.internal
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fi
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}
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# various early volume functions
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attach_ebs() {
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local volId="$1"
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local device="$2"
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local tries=30
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while true; do
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_json="$(aws ec2 describe-volumes --volume-ids $volId --region $REGION --output json)"
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rc=$?; [ $rc -ne 0 ] && return $rc
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vol_status=$(echo "$_json" | jq -r .Volumes[].State)
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attachedId=$(echo "$_json" | jq -r .Volumes[].Attachments[].InstanceId)
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[ "$attachedId" = "$INSTANCE_ID" ] && break
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if [ "$vol_status" = "available" ]; then
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aws ec2 attach-volume --volume-id "$volId" --instance-id "$INSTANCE_ID" --region "$REGION" --device "$device" > /dev/null
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rc=$?; [ $rc -ne 0 ] && return $rc
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break
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fi
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# if attached but not to us -> detach
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if [ "$vol_status" = "in-use" ]; then
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aws ec2 detach-volume --volume-id "$volId" --region "$REGION" --force
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rc=$?; [ $rc -ne 0 ] && return $rc
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fi
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((tries=tries-1))
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[ $tries -eq 0 ] && return 1
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sleep 5
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done
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}
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_parse_volume() {
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# Todo: proper checks once all is yaml
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# For now just replace ':'
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echo $1 | sed -e 's/:/ /g'
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}
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# mount optional remote volumes
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mount_volumes() {
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local volumes="$1"
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for vol in $volumes; do
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# Todo: check volume type and call matching func
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read volType volId volDevice volPath < <(_parse_volume $vol)
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[ "$volType" != "ebs" ] && { echo "Unknown volume type $volType"; break; }
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attach_ebs $volId $volDevice
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rc=$?
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[ $rc -ne 0 ] && { ewarn "error trying to attach $volId"; break; }
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# wait for the block device to become available
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while true; do
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mdev -s
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test -b $volDevice && break
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sleep 1
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done
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# check volume for existing filesystem
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type=$(file -Lbs $volDevice)
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if [[ "$type" =~ "XFS filesystem" ]]; then
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xfs_repair $volDevice >/dev/null 2>&1
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else
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mkfs.xfs -qf $volDevice >/dev/null
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fi
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# mount
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mkdir -p $volPath
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mount -t xfs -o noatime $volDevice $volPath
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ebegin "mounting $volDevice at $volPath"
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done
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}
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unmount_volumes() {
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local volumes="$1"
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for vol in $volumes; do
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read volType volId volDevice volPath < <(_parse_volume $vol)
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umount $volPath && aws ec2 detach-volume --volume-id "$volId" --instance-id $INSTANCE_ID --region $REGION > /dev/null
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done
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}
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# msg used for sns event, last one wins
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msg() { MSG="$@"; log -t user-data info "$@"; }
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# boolean flags
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is_enabled() {
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local flag=$(echo "$1" | tr '[:upper:]' '[:lower:]')
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[ "$flag" == 1 -o "$flag" == "true" ] && return 0
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[ "$flag" == 0 -o "$flag" == "false" -o -z "$flag" ] && return 1
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log -t user-data warn "Unknown value for boolean option: $flag - assuming False"
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return 1
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}
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# Generic retry command wrapper, incl. timeout of 30s
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# $1 = number of tries; 0 = forever
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# $2 = number of seconds to sleep between tries
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# $@ actual command
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retry() {
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local tries=$1
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local waitfor=$2
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shift 2
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while true; do
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# Only use timeout of $1 is an executable, call directly if function
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type -tf $1 >/dev/null && { timeout 30 $@ && return; } || { $@ && return; }
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((tries=tries-1)) || true
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[ $tries -eq 0 ] && return 1
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sleep $waitfor
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done
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}
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add_swap() {
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[ -f /.swapfile ] || { dd if=/dev/zero of=/.swapfile bs=1M count=$1 && chmod 600 /.swapfile && mkswap /.swapfile && swapon /.swapfile; }
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grep -q "/.swapfile" /etc/fstab || echo "/.swapfile none swap sw 0 0" >> /etc/fstab
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sysctl -w vm.swappiness=10
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}
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# Get SSM secure string base64 decoded
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# $0 SSM_PATH, value to stdout
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get_secret() {
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aws ssm get-parameter --name ${1,,} --with-decryption --query 'Parameter.Value' | base64 -d
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}
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# Store values as base64 on SSM
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# $0 SSM_PATH VALUE
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put_secret() {
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aws ssm put-parameter --name ${1,,} --type SecureString --value "$(echo "$2" | base64 -w0)" --overwrite
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}
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# Gets existing passphrase or creates new passphrase and stores it
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init_passphrase() {
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local _URL=$1
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local _PPFILE=$2
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# If secret already exists noop
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[ -f $_PPFILE ] && return 0
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get_secret $_URL > $_PPFILE && chmod 600 $_PPFILE || \
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{ xxd -l16 -p /dev/random > $_PPFILE; chmod 600 $_PPFILE; put_secret $_URL "$(cat $_PPFILE)"; }
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}
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asg_heartbeat() {
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[ -n "$LAUNCH_HOOK" ] && aws autoscaling record-lifecycle-action-heartbeat --instance-id $INSTANCE_ID --lifecycle-hook-name $LAUNCH_HOOK --auto-scaling-group-name $AWS_AUTOSCALING_GROUPNAME || true
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}
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setup_sns_alarms() {
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# store SNS message json template
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cat <<EOF > /var/lib/cloud/sns_alarm.json
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{
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"Source": "CloudBender",
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"AWSAccountId": "$AWS_ACCOUNT_ID",
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"Region": "$REGION",
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"Artifact": "$ARTIFACT",
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"Asg": "$AWS_AUTOSCALING_GROUPNAME",
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"Instance": "$INSTANCE_ID",
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"ip": "$IP_ADDRESS"
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}
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EOF
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cat <<'EOF' > /var/lib/cloud/sns_alarm.sh
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#!/bin/bash
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SUBJECT=$1
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MSG=$2
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LEVEL=${3:-Info}
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ATTACHMENT=${4:-""}
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EMOJI=${5:-""}
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EOF
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if [ -n "$ALARMSNSARN" ]; then
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cat <<EOF >> /var/lib/cloud/sns_alarm.sh
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jq -M --arg subject "\$SUBJECT" --arg level "\$LEVEL" --arg msg "\$MSG" --arg attachment "\$ATTACHMENT" --arg emoji "\$EMOJI" --arg hostname "\$HOSTNAME" '.Subject = \$subject | .Level = \$level | .Message = \$msg | .Attachment = \$attachment | .Emoji = \$emoji | .Hostname = \$hostname' < /var/lib/cloud/sns_alarm.json | sed -e 's/\\\\\\\\/\\\\/g' > /tmp/sns.json
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aws sns publish --region ${REGION} --target-arn $ALARMSNSARN --message file:///tmp/sns.json
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EOF
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fi
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chmod +x /var/lib/cloud/sns_alarm.sh
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}
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exit_trap() {
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set +e
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trap - ERR EXIT
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local ERR_CODE=$1
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local ERR_LINE="$2"
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local ERR_FUNC="$3"
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local ERR_CMD="$4"
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if [ $ERR_CODE -ne 0 ]; then
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CFN_STATUS="FAILURE"
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RESULT="ABANDON"
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else
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CFN_STATUS="SUCCESS"
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RESULT="CONTINUE"
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fi
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# Add SNS events on demand
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if [ -n "$ALARMSNSARN" ]; then
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if [ $ERR_CODE -ne 0 ]; then
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LEVEL="Error"
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SUBJECT="Error during cloud-init."
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if [ $ERR_LINE -ne 1 ]; then
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MSG="$ERR_CMD failed in $ERR_FUNC at $ERR_LINE. Return: $ERR_CODE"
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ATTACHMENT="$(pr -tn $0 | tail -n+$((ERR_LINE - 3)) | head -n7)"
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else
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MSG="$ERR_CMD"
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fi
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if [ -n "$DEBUG" ]; then
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SUBJECT="$SUBJECT Instance kept running for debug."
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else
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SUBJECT="$SUBJECT Instance terminated by ASG lifecycle hook."
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fi
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else
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LEVEL="Info"
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SUBJECT="ZDT Alpine Instance launched."
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fi
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if [ -z "${DISABLECLOUDBENDERSNSSCALINGEVENTS}" ] || [ "$LEVEL" != "Info" ]; then
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/var/lib/cloud/sns_alarm.sh "$SUBJECT" "$MSG" "$LEVEL" "$ATTACHMENT"
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fi
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# Disable scaling events during shutdown
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[ -n "${DISABLECLOUDBENDERSNSSCALINGEVENTS}" ] && echo "DISABLE_SCALING_EVENTS=1" >> /etc/cloudbender.conf
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fi
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[ -n "$LAUNCH_HOOK" ] && aws autoscaling complete-lifecycle-action --lifecycle-action-result $RESULT --instance-id $INSTANCE_ID --lifecycle-hook-name $LAUNCH_HOOK --auto-scaling-group-name ${AWS_AUTOSCALING_GROUPNAME} || true
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if [ -n "${AWS_CLOUDFORMATION_LOGICAL_ID}" ]; then
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aws cloudformation signal-resource --stack-name ${AWS_CLOUDFORMATION_STACK_NAME} --logical-resource-id ${AWS_CLOUDFORMATION_LOGICAL_ID} --unique-id ${INSTANCE_ID} --status ${CFN_STATUS}
|
|
fi
|
|
|
|
# timestamp being done
|
|
end_uptime=$(awk '{print $1}' < /proc/uptime)
|
|
log -t user-data info "Exiting user-data. Duration: $(echo "$end_uptime-$start_uptime" | bc) seconds"
|
|
|
|
# Shutdown / poweroff if we ran into error and not DEBUG
|
|
[ $ERR_CODE -ne 0 -a -z "$DEBUG" ] && poweroff
|
|
|
|
exit 0
|
|
}
|
|
|
|
### S3 based locking
|
|
MUTEX=mutex
|
|
MUTEX_OWNER=$HOSTNAME
|
|
MUTEX_TIMEOUT=600
|
|
|
|
release_lock() {
|
|
local S3LOCK=$1
|
|
|
|
rm -f $MUTEX
|
|
aws s3 rm $S3LOCK
|
|
}
|
|
|
|
# Lock not timed out and we own it: 0
|
|
# Lock not timed out and someone else owns it: 1
|
|
# Lock timed out: 2
|
|
verify_lock() {
|
|
local S3LOCK=$1
|
|
|
|
aws s3 cp $S3LOCK $MUTEX
|
|
_host=$(grep "MUTEX_OWNER=" $MUTEX | sed -e 's/MUTEX_OWNER=//')
|
|
_time=$(grep "MUTEX_TIME=" $MUTEX | sed -e 's/MUTEX_TIME=//')
|
|
|
|
# Check for timestamp and timeout
|
|
let timepassed=$(date -u +%s)-$_time
|
|
[ $timepassed -gt $MUTEX_TIMEOUT ] && return 2
|
|
|
|
[ "$_host" == "$MUTEX_OWNER" ] && return 0
|
|
return 1
|
|
}
|
|
|
|
aquire_lock() {
|
|
local S3LOCK=$1
|
|
|
|
echo "MUTEX_OWNER=${MUTEX_OWNER}" > $MUTEX
|
|
echo "MUTEX_TIME=$(date -u +%s)" >> $MUTEX
|
|
aws s3 cp $MUTEX $S3LOCK
|
|
|
|
# verify we actually got the lock
|
|
sleep 2
|
|
verify_lock $S3LOCK
|
|
}
|
|
|
|
check_lock() {
|
|
local S3LOCK=$1
|
|
|
|
aws s3 ls $S3LOCK && rc=$? || rc=$?
|
|
|
|
# No LOCK ? -> get it !
|
|
if [ $rc -ne 0 ]; then
|
|
aquire_lock $S3LOCK
|
|
|
|
else
|
|
verify_lock $S3LOCK && rc=$? || rc=$?
|
|
|
|
# Lock timeout -> we get it
|
|
if [ $rc -eq 2 ]; then
|
|
aquire_lock $S3LOCK
|
|
|
|
# we already own it
|
|
elif [ $rc -eq 0 ]; then
|
|
return 0
|
|
|
|
# someone else has a valid lock
|
|
else
|
|
return 1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# All things networking
|
|
enable_ip_forwarding() {
|
|
modprobe nf_conntrack
|
|
|
|
cat <<EOF > /etc/sysctl.d/40-ip-forward.conf
|
|
net.ipv4.ip_forward=1
|
|
net.ipv4.ip_local_port_range = 1024 65535
|
|
net.ipv4.conf.all.send_redirects=0
|
|
net.ipv4.conf.all.rp_filter = 1
|
|
net.ipv4.conf.all.accept_redirects = 0
|
|
net.ipv6.conf.default.forwarding = 1
|
|
net.ipv6.conf.all.forwarding = 1
|
|
net.netfilter.nf_conntrack_max = 524288
|
|
EOF
|
|
sysctl -p /etc/sysctl.d/40-ip-forward.conf
|
|
}
|
|
|
|
enable_iptables() {
|
|
rc-update add iptables
|
|
/etc/init.d/iptables save
|
|
}
|
|
|
|
|
|
register_service_dns() {
|
|
if [ -n "$DNSZONE" -a -n "$SERVICENAME" ]; then
|
|
_IP=${PUBLIC_IP_ADDRESS:-$IP_ADDRESS}
|
|
[ -n "SERVICEPRIVATE" ] && _IP=$IP_ADDRESS
|
|
route53.py --fqdn "${SERVICENAME}.${DNSZONE}" --record $_IP
|
|
|
|
# Register shutdown hook to remove DNS entry on terminate
|
|
cat <<EOF >> /etc/local.d/route53.stop
|
|
echo "Deleting Route53 record for ${SERVICENAME}.${DNSZONE}" >> /tmp/shutdown.log
|
|
route53.py --delete --fqdn "${SERVICENAME}.${DNSZONE}" --record ${PUBLIC_IP_ADDRESS:-$IP_ADDRESS}
|
|
EOF
|
|
chmod +x /etc/local.d/route53.stop
|
|
|
|
# Short cut our public IP to private one to allow talking to our own service name
|
|
add_once /etc/hosts "${IP_ADDRESS} ${SERVICENAME}.${DNSZONE}"
|
|
fi
|
|
}
|
|
|
|
|
|
# associate EIP
|
|
# return 0 if we attached an EIP
|
|
# return 1 if we the public IP did NOT change or other error
|
|
associate_eip() {
|
|
local instance_id=$1
|
|
local eip=$(echo $2 | sed -e 's/\/32//' | grep -E -o "(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)") || true
|
|
local current_instance
|
|
|
|
if [ -n "$eip" ]; then
|
|
if [ "$eip" != "0.0.0.0" ]; then
|
|
read eip_alloc_id eip_assoc_id current_instance < <(aws ec2 describe-addresses --public-ips $eip --query 'Addresses[*].[AllocationId,AssociationId,InstanceId]' || true)
|
|
|
|
# If we already own and have the EIP attached -> done
|
|
[ "$instance_id" == "$current_instance" ] && return
|
|
|
|
if [ ! -z "$eip_alloc_id" ]; then
|
|
if [[ "$eip_assoc_id" =~ ^eipassoc- ]]; then
|
|
log -t user-data info "EIP $eip already associated via Association ID ${eip_assoc_id}. Disassociating."
|
|
retry 3 10 aws ec2 disassociate-address --association-id $eip_assoc_id
|
|
fi
|
|
|
|
log -t user-data info "Associating Elastic IP $eip via Allocation ID $eip_alloc_id with Instance $instance_id"
|
|
aws ec2 associate-address --no-allow-reassociation --instance-id $instance_id --allocation-id $eip_alloc_id
|
|
return
|
|
|
|
else
|
|
log -t user-data warn "Elastic IP $eip address not found."
|
|
fi
|
|
else
|
|
log -t user-data info "0.0.0.0 requested, keeping AWS assigned IP."
|
|
fi
|
|
else
|
|
log -t user-data debug "Invalid or no ElasticIP defined. Skip"
|
|
fi
|
|
|
|
return 1
|
|
}
|
|
|
|
|
|
|
|
|
|
# Accept incoming traffic for everything
|
|
disable_source_dest_check() {
|
|
aws ec2 modify-instance-attribute --instance-id ${INSTANCE_ID} --source-dest-check "{\"Value\": false}"
|
|
}
|
|
|
|
|
|
# Register ourself at route tables
|
|
register_routes() {
|
|
local rtb_id_list="$1"
|
|
local route_cidr="$2"
|
|
|
|
for cidr in ${route_cidr//,/ }; do
|
|
if [ "$cidr" != "$VPC_CIDR_RANGE" ]; then
|
|
for rt in ${rtb_id_list//,/ }; do
|
|
if [[ "$rt" =~ ^rtb-[a-f0-9]*$ ]]; then
|
|
aws ec2 create-route --route-table-id $rt --destination-cidr-block "${cidr}" --instance-id ${INSTANCE_ID} || \
|
|
aws ec2 replace-route --route-table-id $rt --destination-cidr-block "${cidr}" --instance-id ${INSTANCE_ID}
|
|
else
|
|
log -t user-data warn "Invalid Route Table ID: $rt"
|
|
fi
|
|
done
|
|
fi
|
|
done
|
|
}
|
|
|
|
|
|
setup_nat() {
|
|
local mode=$1
|
|
|
|
# Masquerade all outgoing traffic
|
|
iptables -t nat -A POSTROUTING -o $DEFAULT_GW_INTERFACE -s ${VPC_CIDR_RANGE} -j MASQUERADE
|
|
}
|
|
|
|
|
|
setup_fluentbit() {
|
|
local key="cloudbender"
|
|
local host="$1"
|
|
|
|
if [[ "$host" =~ "@" ]]; then
|
|
key=${host%%@*}
|
|
host=${host##*@}
|
|
fi
|
|
|
|
# add some AWS metadata
|
|
cat <<EOF > /etc/fluent-bit/metadata.conf
|
|
[FILTER]
|
|
Name record_modifier
|
|
Match *
|
|
Record source.ip $IP_ADDRESS
|
|
Record source.instance_id $INSTANCE_ID
|
|
Record source.region $REGION
|
|
Record source.account $AWS_ACCOUNT_ID
|
|
Record source.conglomerate $CONGLOMERATE
|
|
Record source.artifact $ARTIFACT
|
|
EOF
|
|
|
|
# Configure output
|
|
cat <<EOF > /etc/fluent-bit/output.conf
|
|
[OUTPUT]
|
|
Match *
|
|
Name forward
|
|
Host $host
|
|
Port 24224
|
|
Shared_Key $key
|
|
tls on
|
|
Send_options true
|
|
Require_ack_response true
|
|
EOF
|
|
|
|
LOG_FILES=$LOGGING_FILES
|
|
|
|
## TODO:
|
|
# Add parameter parsing for custom logfile tailing
|
|
}
|