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kubernetes/cluster/aws/util.sh
Brendan Burns 637cd57a25 Merge pull request #6606 from gust1n/aws-existing-vpc 
AWS: Improving getting existing VPC and subnet
2015-04-27 11:11:25 -07:00

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#!/bin/bash
# Copyright 2014 Google Inc. All rights reserved.
#
# 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.
# A library of helper functions and constant for the local config.
# Use the config file specified in $KUBE_CONFIG_FILE, or default to
# config-default.sh.
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
source "${KUBE_ROOT}/cluster/aws/${KUBE_CONFIG_FILE-"config-default.sh"}"
source "${KUBE_ROOT}/cluster/common.sh"
# This removes the final character in bash (somehow)
AWS_REGION=${ZONE%?}
export AWS_DEFAULT_REGION=${AWS_REGION}
AWS_CMD="aws --output json ec2"
AWS_ELB_CMD="aws --output json elb"
INTERNAL_IP_BASE=172.20.0
MASTER_IP_SUFFIX=.9
MASTER_INTERNAL_IP=${INTERNAL_IP_BASE}${MASTER_IP_SUFFIX}
function json_val {
python -c 'import json,sys;obj=json.load(sys.stdin);print obj'$1''
}
# TODO (ayurchuk) Refactor the get_* functions to use filters
# TODO (bburns) Parameterize this for multiple cluster per project
function get_vpc_id {
$AWS_CMD --output text describe-vpcs \
--filters Name=tag:Name,Values=kubernetes-vpc \
Name=tag:KubernetesCluster,Values=${CLUSTER_ID} \
--query Vpcs[].VpcId
}
function get_subnet_id {
python -c "import json,sys; lst = [str(subnet['SubnetId']) for subnet in json.load(sys.stdin)['Subnets'] if subnet['VpcId'] == '$1' and subnet['AvailabilityZone'] == '$2']; print ''.join(lst)"
}
function get_cidr {
python -c "import json,sys; lst = [str(subnet['CidrBlock']) for subnet in json.load(sys.stdin)['Subnets'] if subnet['VpcId'] == '$1' and subnet['AvailabilityZone'] == '$2']; print ''.join(lst)"
}
function get_igw_id {
python -c "import json,sys; lst = [str(igw['InternetGatewayId']) for igw in json.load(sys.stdin)['InternetGateways'] for attachment in igw['Attachments'] if attachment['VpcId'] == '$1']; print ''.join(lst)"
}
function get_route_table_id {
python -c "import json,sys; lst = [str(route_table['RouteTableId']) for route_table in json.load(sys.stdin)['RouteTables'] if route_table['VpcId'] == '$1']; print ''.join(lst)"
}
function get_elbs_in_vpc {
# ELB doesn't seem to be on the same platform as the rest of AWS; doesn't support filtering
$AWS_ELB_CMD describe-load-balancers | \
python -c "import json,sys; lst = [str(lb['LoadBalancerName']) for lb in json.load(sys.stdin)['LoadBalancerDescriptions'] if lb['VPCId'] == '$1']; print '\n'.join(lst)"
}
function expect_instance_states {
python -c "import json,sys; lst = [str(instance['InstanceId']) for reservation in json.load(sys.stdin)['Reservations'] for instance in reservation['Instances'] if instance['State']['Name'] != '$1']; print ' '.join(lst)"
}
function get_instance_public_ip {
local tagName=$1
$AWS_CMD --output text describe-instances \
--filters Name=tag:Name,Values=${tagName} \
Name=instance-state-name,Values=running \
Name=tag:KubernetesCluster,Values=${CLUSTER_ID} \
--query Reservations[].Instances[].NetworkInterfaces[0].Association.PublicIp
}
function detect-master () {
KUBE_MASTER=${MASTER_NAME}
if [[ -z "${KUBE_MASTER_IP-}" ]]; then
KUBE_MASTER_IP=$(get_instance_public_ip $MASTER_NAME)
fi
if [[ -z "${KUBE_MASTER_IP-}" ]]; then
echo "Could not detect Kubernetes master node. Make sure you've launched a cluster with 'kube-up.sh'"
exit 1
fi
echo "Using master: $KUBE_MASTER (external IP: $KUBE_MASTER_IP)"
}
function detect-minions () {
KUBE_MINION_IP_ADDRESSES=()
for (( i=0; i<${#MINION_NAMES[@]}; i++)); do
local minion_ip=$(get_instance_public_ip ${MINION_NAMES[$i]})
echo "Found ${MINION_NAMES[$i]} at ${minion_ip}"
KUBE_MINION_IP_ADDRESSES+=("${minion_ip}")
done
if [[ -z "$KUBE_MINION_IP_ADDRESSES" ]]; then
echo "Could not detect Kubernetes minion nodes. Make sure you've launched a cluster with 'kube-up.sh'"
exit 1
fi
}
# Detects the AMI to use (considering the region)
#
# Vars set:
# AWS_IMAGE
function detect-image () {
# This is the ubuntu 14.04 image for <region>, amd64, hvm:ebs-ssd
# See here: http://cloud-images.ubuntu.com/locator/ec2/ for other images
# This will need to be updated from time to time as amis are deprecated
if [[ -z "${AWS_IMAGE-}" ]]; then
case "${AWS_REGION}" in
ap-northeast-1)
AWS_IMAGE=ami-93876e93
;;
ap-southeast-1)
AWS_IMAGE=ami-66546234
;;
eu-central-1)
AWS_IMAGE=ami-e2a694ff
;;
eu-west-1)
AWS_IMAGE=ami-d7fd6ea0
;;
sa-east-1)
AWS_IMAGE=ami-a357eebe
;;
us-east-1)
AWS_IMAGE=ami-6089d208
;;
us-west-1)
AWS_IMAGE=ami-cf7d998b
;;
cn-north-1)
AWS_IMAGE=ami-d436a4ed
;;
us-gov-west-1)
AWS_IMAGE=ami-01523322
;;
ap-southeast-2)
AWS_IMAGE=ami-cd4e3ff7
;;
us-west-2)
AWS_IMAGE=ami-3b14370b
;;
*)
echo "Please specify AWS_IMAGE directly (region not recognized)"
exit 1
esac
fi
}
# Verify prereqs
function verify-prereqs {
if [[ "$(which aws)" == "" ]]; then
echo "Can't find aws in PATH, please fix and retry."
exit 1
fi
}
# Create a temp dir that'll be deleted at the end of this bash session.
#
# Vars set:
# KUBE_TEMP
function ensure-temp-dir {
if [[ -z ${KUBE_TEMP-} ]]; then
KUBE_TEMP=$(mktemp -d -t kubernetes.XXXXXX)
trap 'rm -rf "${KUBE_TEMP}"' EXIT
fi
}
# Verify and find the various tar files that we are going to use on the server.
#
# Vars set:
# SERVER_BINARY_TAR
# SALT_TAR
function find-release-tars {
SERVER_BINARY_TAR="${KUBE_ROOT}/server/kubernetes-server-linux-amd64.tar.gz"
if [[ ! -f "$SERVER_BINARY_TAR" ]]; then
SERVER_BINARY_TAR="${KUBE_ROOT}/_output/release-tars/kubernetes-server-linux-amd64.tar.gz"
fi
if [[ ! -f "$SERVER_BINARY_TAR" ]]; then
echo "!!! Cannot find kubernetes-server-linux-amd64.tar.gz"
exit 1
fi
SALT_TAR="${KUBE_ROOT}/server/kubernetes-salt.tar.gz"
if [[ ! -f "$SALT_TAR" ]]; then
SALT_TAR="${KUBE_ROOT}/_output/release-tars/kubernetes-salt.tar.gz"
fi
if [[ ! -f "$SALT_TAR" ]]; then
echo "!!! Cannot find kubernetes-salt.tar.gz"
exit 1
fi
}
# Take the local tar files and upload them to S3. They will then be
# downloaded by the master as part of the start up script for the master.
#
# Assumed vars:
# SERVER_BINARY_TAR
# SALT_TAR
# Vars set:
# SERVER_BINARY_TAR_URL
# SALT_TAR_URL
function upload-server-tars() {
SERVER_BINARY_TAR_URL=
SALT_TAR_URL=
if [[ -z ${AWS_S3_BUCKET-} ]]; then
local project_hash=
local key=$(aws configure get aws_access_key_id)
if which md5 > /dev/null 2>&1; then
project_hash=$(md5 -q -s "${USER} ${key}")
else
project_hash=$(echo -n "${USER} ${key}" | md5sum | awk '{ print $1 }')
fi
AWS_S3_BUCKET="kubernetes-staging-${project_hash}"
fi
echo "Uploading to Amazon S3"
if ! aws s3 ls "s3://${AWS_S3_BUCKET}" > /dev/null 2>&1 ; then
echo "Creating ${AWS_S3_BUCKET}"
# Buckets must be globally uniquely named, so always create in a known region
# We default to us-east-1 because that's the canonical region for S3,
# and then the bucket is most-simply named (s3.amazonaws.com)
aws s3 mb "s3://${AWS_S3_BUCKET}" --region ${AWS_S3_REGION}
fi
local s3_bucket_location=$(aws --output text s3api get-bucket-location --bucket ${AWS_S3_BUCKET})
local s3_url_base=https://s3-${s3_bucket_location}.amazonaws.com
if [[ "${s3_bucket_location}" == "None" ]]; then
# "US Classic" does not follow the pattern
s3_url_base=https://s3.amazonaws.com
fi
local -r staging_path="devel"
echo "+++ Staging server tars to S3 Storage: ${AWS_S3_BUCKET}/${staging_path}"
local server_binary_path="${staging_path}/${SERVER_BINARY_TAR##*/}"
aws s3 cp "${SERVER_BINARY_TAR}" "s3://${AWS_S3_BUCKET}/${server_binary_path}"
aws s3api put-object-acl --bucket ${AWS_S3_BUCKET} --key "${server_binary_path}" --grant-read 'uri="http://acs.amazonaws.com/groups/global/AllUsers"'
SERVER_BINARY_TAR_URL="${s3_url_base}/${AWS_S3_BUCKET}/${server_binary_path}"
local salt_tar_path="${staging_path}/${SALT_TAR##*/}"
aws s3 cp "${SALT_TAR}" "s3://${AWS_S3_BUCKET}/${salt_tar_path}"
aws s3api put-object-acl --bucket ${AWS_S3_BUCKET} --key "${salt_tar_path}" --grant-read 'uri="http://acs.amazonaws.com/groups/global/AllUsers"'
SALT_TAR_URL="${s3_url_base}/${AWS_S3_BUCKET}/${salt_tar_path}"
}
# Ensure that we have a password created for validating to the master. Will
# read from kubeconfig for the current context if available.
#
# Assumed vars
# KUBE_ROOT
#
# Vars set:
# KUBE_USER
# KUBE_PASSWORD
function get-password {
get-kubeconfig-basicauth
if [[ -z "${KUBE_USER}" || -z "${KUBE_PASSWORD}" ]]; then
KUBE_USER=admin
KUBE_PASSWORD=$(python -c 'import string,random; print "".join(random.SystemRandom().choice(string.ascii_letters + string.digits) for _ in range(16))')
fi
}
# Adds a tag to an AWS resource
# usage: add-tag <resource-id> <tag-name> <tag-value>
function add-tag {
echo "Adding tag to ${1}: ${2}=${3}"
# We need to retry in case the resource isn't yet fully created
sleep 3
n=0
until [ $n -ge 5 ]; do
$AWS_CMD create-tags --resources ${1} --tags Key=${2},Value=${3} > $LOG && return
n=$[$n+1]
sleep 15
done
echo "Unable to add tag to AWS resource"
exit 1
}
# Creates the IAM profile, based on configuration files in templates/iam
function create-iam-profile {
local key=$1
local conf_dir=file://${KUBE_ROOT}/cluster/aws/templates/iam
echo "Creating IAM role: ${key}"
aws iam create-role --role-name ${key} --assume-role-policy-document ${conf_dir}/${key}-role.json > $LOG
echo "Creating IAM role-policy: ${key}"
aws iam put-role-policy --role-name ${key} --policy-name ${key} --policy-document ${conf_dir}/${key}-policy.json > $LOG
echo "Creating IAM instance-policy: ${key}"
aws iam create-instance-profile --instance-profile-name ${key} > $LOG
echo "Adding IAM role to instance-policy: ${key}"
aws iam add-role-to-instance-profile --instance-profile-name ${key} --role-name ${key} > $LOG
}
# Creates the IAM roles (if they do not already exist)
function ensure-iam-profiles {
aws iam get-instance-profile --instance-profile-name ${IAM_PROFILE_MASTER} || {
echo "Creating master IAM profile: ${IAM_PROFILE_MASTER}"
create-iam-profile ${IAM_PROFILE_MASTER}
}
aws iam get-instance-profile --instance-profile-name ${IAM_PROFILE_MINION} || {
echo "Creating minion IAM profile: ${IAM_PROFILE_MINION}"
create-iam-profile ${IAM_PROFILE_MINION}
}
}
# Wait for instance to be in running state
function wait-for-instance-running {
instance_id=$1
while true; do
instance_state=$($AWS_CMD describe-instances --instance-ids $instance_id | expect_instance_states running)
if [[ "$instance_state" == "" ]]; then
break
else
echo "Waiting for instance ${instance_id} to spawn"
echo "Sleeping for 3 seconds..."
sleep 3
fi
done
}
function kube-up {
find-release-tars
upload-server-tars
ensure-temp-dir
ensure-iam-profiles
get-password
python "${KUBE_ROOT}/third_party/htpasswd/htpasswd.py" \
-b -c "${KUBE_TEMP}/htpasswd" "$KUBE_USER" "$KUBE_PASSWORD"
local htpasswd
htpasswd=$(cat "${KUBE_TEMP}/htpasswd")
if [[ ! -f "$AWS_SSH_KEY" ]]; then
ssh-keygen -f "$AWS_SSH_KEY" -N ''
fi
detect-image
$AWS_CMD import-key-pair --key-name kubernetes --public-key-material "file://$AWS_SSH_KEY.pub" > $LOG 2>&1 || true
VPC_ID=$(get_vpc_id)
if [[ -z "$VPC_ID" ]]; then
echo "Creating vpc."
VPC_ID=$($AWS_CMD create-vpc --cidr-block $INTERNAL_IP_BASE.0/16 | json_val '["Vpc"]["VpcId"]')
$AWS_CMD modify-vpc-attribute --vpc-id $VPC_ID --enable-dns-support '{"Value": true}' > $LOG
$AWS_CMD modify-vpc-attribute --vpc-id $VPC_ID --enable-dns-hostnames '{"Value": true}' > $LOG
add-tag $VPC_ID Name kubernetes-vpc
add-tag $VPC_ID KubernetesCluster ${CLUSTER_ID}
fi
echo "Using VPC $VPC_ID"
SUBNET_ID=$($AWS_CMD describe-subnets | get_subnet_id $VPC_ID $ZONE)
if [[ -z "$SUBNET_ID" ]]; then
echo "Creating subnet."
SUBNET_ID=$($AWS_CMD create-subnet --cidr-block $INTERNAL_IP_BASE.0/24 --vpc-id $VPC_ID --availability-zone ${ZONE} | json_val '["Subnet"]["SubnetId"]')
else
EXISTING_CIDR=$($AWS_CMD describe-subnets | get_cidr $VPC_ID $ZONE)
echo "Using existing CIDR $EXISTING_CIDR"
INTERNAL_IP_BASE=${EXISTING_CIDR%.*}
MASTER_INTERNAL_IP=${INTERNAL_IP_BASE}${MASTER_IP_SUFFIX}
fi
echo "Using subnet $SUBNET_ID"
IGW_ID=$($AWS_CMD describe-internet-gateways | get_igw_id $VPC_ID)
if [[ -z "$IGW_ID" ]]; then
echo "Creating Internet Gateway."
IGW_ID=$($AWS_CMD create-internet-gateway | json_val '["InternetGateway"]["InternetGatewayId"]')
$AWS_CMD attach-internet-gateway --internet-gateway-id $IGW_ID --vpc-id $VPC_ID > $LOG
fi
echo "Using Internet Gateway $IGW_ID"
echo "Associating route table."
ROUTE_TABLE_ID=$($AWS_CMD describe-route-tables --filters Name=vpc-id,Values=$VPC_ID | json_val '["RouteTables"][0]["RouteTableId"]')
$AWS_CMD associate-route-table --route-table-id $ROUTE_TABLE_ID --subnet-id $SUBNET_ID > $LOG || true
echo "Configuring route table."
$AWS_CMD describe-route-tables --filters Name=vpc-id,Values=$VPC_ID > $LOG || true
echo "Adding route to route table."
$AWS_CMD create-route --route-table-id $ROUTE_TABLE_ID --destination-cidr-block 0.0.0.0/0 --gateway-id $IGW_ID > $LOG || true
echo "Using Route Table $ROUTE_TABLE_ID"
SEC_GROUP_ID=$($AWS_CMD --output text describe-security-groups \
--filters Name=vpc-id,Values=$VPC_ID \
Name=group-name,Values=kubernetes-sec-group \
--query SecurityGroups[].GroupId \
| tr "\t" "\n")
if [[ -z "$SEC_GROUP_ID" ]]; then
echo "Creating security group."
SEC_GROUP_ID=$($AWS_CMD create-security-group --group-name kubernetes-sec-group --description kubernetes-sec-group --vpc-id $VPC_ID | json_val '["GroupId"]')
$AWS_CMD authorize-security-group-ingress --group-id $SEC_GROUP_ID --protocol -1 --port all --cidr 0.0.0.0/0 > $LOG
fi
(
# We pipe this to the ami as a startup script in the user-data field. Requires a compatible ami
echo "#! /bin/bash"
echo "mkdir -p /var/cache/kubernetes-install"
echo "cd /var/cache/kubernetes-install"
echo "readonly SALT_MASTER='${MASTER_INTERNAL_IP}'"
echo "readonly INSTANCE_PREFIX='${INSTANCE_PREFIX}'"
echo "readonly NODE_INSTANCE_PREFIX='${INSTANCE_PREFIX}-minion'"
echo "readonly SERVER_BINARY_TAR_URL='${SERVER_BINARY_TAR_URL}'"
echo "readonly SALT_TAR_URL='${SALT_TAR_URL}'"
echo "readonly ZONE='${ZONE}'"
echo "readonly MASTER_HTPASSWD='${htpasswd}'"
echo "readonly PORTAL_NET='${PORTAL_NET}'"
echo "readonly ENABLE_CLUSTER_MONITORING='${ENABLE_CLUSTER_MONITORING:-false}'"
echo "readonly ENABLE_NODE_MONITORING='${ENABLE_NODE_MONITORING:-false}'"
echo "readonly ENABLE_CLUSTER_LOGGING='${ENABLE_CLUSTER_LOGGING:-false}'"
echo "readonly ENABLE_NODE_LOGGING='${ENABLE_NODE_LOGGING:-false}'"
echo "readonly LOGGING_DESTINATION='${LOGGING_DESTINATION:-}'"
echo "readonly ELASTICSEARCH_LOGGING_REPLICAS='${ELASTICSEARCH_LOGGING_REPLICAS:-}'"
echo "readonly ENABLE_CLUSTER_DNS='${ENABLE_CLUSTER_DNS:-false}'"
echo "readonly DNS_REPLICAS='${DNS_REPLICAS:-}'"
echo "readonly DNS_SERVER_IP='${DNS_SERVER_IP:-}'"
echo "readonly DNS_DOMAIN='${DNS_DOMAIN:-}'"
echo "readonly ADMISSION_CONTROL='${ADMISSION_CONTROL:-}'"
echo "readonly MASTER_IP_RANGE='${MASTER_IP_RANGE:-}'"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/common.sh"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/format-disks.sh"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/create-dynamic-salt-files.sh"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/download-release.sh"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/salt-master.sh"
) > "${KUBE_TEMP}/master-start.sh"
echo "Starting Master"
master_id=$($AWS_CMD run-instances \
--image-id $AWS_IMAGE \
--iam-instance-profile Name=$IAM_PROFILE_MASTER \
--instance-type $MASTER_SIZE \
--subnet-id $SUBNET_ID \
--private-ip-address $MASTER_INTERNAL_IP \
--key-name kubernetes \
--security-group-ids $SEC_GROUP_ID \
--associate-public-ip-address \
--user-data file://${KUBE_TEMP}/master-start.sh | json_val '["Instances"][0]["InstanceId"]')
add-tag $master_id Name $MASTER_NAME
add-tag $master_id Role $MASTER_TAG
add-tag $master_id KubernetesCluster ${CLUSTER_ID}
echo "Waiting for master to be ready"
local attempt=0
while true; do
echo -n Attempt "$(($attempt+1))" to check for master node
local ip=$(get_instance_public_ip $MASTER_NAME)
if [[ -z "${ip}" ]]; then
if (( attempt > 30 )); then
echo
echo -e "${color_red}master failed to start. Your cluster is unlikely" >&2
echo "to work correctly. Please run ./cluster/kube-down.sh and re-create the" >&2
echo -e "cluster. (sorry!)${color_norm}" >&2
exit 1
fi
else
KUBE_MASTER=${MASTER_NAME}
KUBE_MASTER_IP=${ip}
echo -e " ${color_green}[master running @${KUBE_MASTER_IP}]${color_norm}"
# We are not able to add a route to the instance until that instance is in "running" state.
wait-for-instance-running $master_id
sleep 10
$AWS_CMD create-route --route-table-id $ROUTE_TABLE_ID --destination-cidr-block ${MASTER_IP_RANGE} --instance-id $master_id > $LOG
break
fi
echo -e " ${color_yellow}[master not working yet]${color_norm}"
attempt=$(($attempt+1))
sleep 10
done
# We need the salt-master to be up for the minions to work
attempt=0
while true; do
echo -n Attempt "$(($attempt+1))" to check for salt-master
local output
output=$(ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" ubuntu@${KUBE_MASTER_IP} pgrep salt-master 2> $LOG) || output=""
if [[ -z "${output}" ]]; then
if (( attempt > 30 )); then
echo
echo -e "${color_red}salt-master failed to start on ${KUBE_MASTER_IP}. Your cluster is unlikely" >&2
echo "to work correctly. Please run ./cluster/kube-down.sh and re-create the" >&2
echo -e "cluster. (sorry!)${color_norm}" >&2
exit 1
fi
else
echo -e " ${color_green}[salt-master running]${color_norm}"
break
fi
echo -e " ${color_yellow}[salt-master not working yet]${color_norm}"
attempt=$(($attempt+1))
sleep 10
done
MINION_IDS=()
for (( i=0; i<${#MINION_NAMES[@]}; i++)); do
echo "Starting Minion (${MINION_NAMES[$i]})"
(
# We pipe this to the ami as a startup script in the user-data field. Requires a compatible ami
echo "#! /bin/bash"
echo "SALT_MASTER='${MASTER_INTERNAL_IP}'"
echo "MINION_IP_RANGE='${MINION_IP_RANGES[$i]}'"
echo "DOCKER_OPTS='${EXTRA_DOCKER_OPTS:-}'"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/format-disks.sh"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/salt-minion.sh"
) > "${KUBE_TEMP}/minion-start-${i}.sh"
minion_id=$($AWS_CMD run-instances \
--image-id $AWS_IMAGE \
--iam-instance-profile Name=$IAM_PROFILE_MINION \
--instance-type $MINION_SIZE \
--subnet-id $SUBNET_ID \
--private-ip-address $INTERNAL_IP_BASE.1${i} \
--key-name kubernetes \
--security-group-ids $SEC_GROUP_ID \
--associate-public-ip-address \
--user-data file://${KUBE_TEMP}/minion-start-${i}.sh | json_val '["Instances"][0]["InstanceId"]')
add-tag $minion_id Name ${MINION_NAMES[$i]}
add-tag $minion_id Role $MINION_TAG
add-tag $minion_id KubernetesCluster ${CLUSTER_ID}
MINION_IDS[$i]=$minion_id
done
# Add routes to minions
for (( i=0; i<${#MINION_NAMES[@]}; i++)); do
# We are not able to add a route to the instance until that instance is in "running" state.
# This is quite an ugly solution to this problem. In Bash 4 we could use assoc. arrays to do this for
# all instances at once but we can't be sure we are running Bash 4.
minion_id=${MINION_IDS[$i]}
wait-for-instance-running $minion_id
echo "Minion ${MINION_NAMES[$i]} running"
sleep 10
$AWS_CMD modify-instance-attribute --instance-id $minion_id --source-dest-check '{"Value": false}' > $LOG
$AWS_CMD create-route --route-table-id $ROUTE_TABLE_ID --destination-cidr-block ${MINION_IP_RANGES[$i]} --instance-id $minion_id > $LOG
done
FAIL=0
for job in `jobs -p`; do
wait $job || let "FAIL+=1"
done
if (( $FAIL != 0 )); then
echo "${FAIL} commands failed. Exiting."
exit 2
fi
detect-master > $LOG
detect-minions > $LOG
# Wait 3 minutes for cluster to come up. We hit it with a "highstate" after that to
# make sure that everything is well configured.
# TODO: Can we poll here?
echo "Waiting 3 minutes for cluster to settle"
local i
for (( i=0; i < 6*3; i++)); do
printf "."
sleep 10
done
echo "Re-running salt highstate"
ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" ubuntu@${KUBE_MASTER_IP} sudo salt '*' state.highstate > $LOG
echo "Waiting for cluster initialization."
echo
echo " This will continually check to see if the API for kubernetes is reachable."
echo " This might loop forever if there was some uncaught error during start"
echo " up."
echo
until $(curl --insecure --user ${KUBE_USER}:${KUBE_PASSWORD} --max-time 5 \
--fail --output $LOG --silent https://${KUBE_MASTER_IP}/api/v1beta1/pods); do
printf "."
sleep 2
done
echo "Kubernetes cluster created."
# TODO use token instead of kube_auth
export KUBE_CERT="/tmp/$RANDOM-kubecfg.crt"
export KUBE_KEY="/tmp/$RANDOM-kubecfg.key"
export CA_CERT="/tmp/$RANDOM-kubernetes.ca.crt"
export CONTEXT="aws_${INSTANCE_PREFIX}"
local kubectl="${KUBE_ROOT}/cluster/kubectl.sh"
# TODO: generate ADMIN (and KUBELET) tokens and put those in the master's
# config file. Distribute the same way the htpasswd is done.
(
umask 077
ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" "ubuntu@${KUBE_MASTER_IP}" sudo cat /srv/kubernetes/kubecfg.crt >"${KUBE_CERT}" 2>"$LOG"
ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" "ubuntu@${KUBE_MASTER_IP}" sudo cat /srv/kubernetes/kubecfg.key >"${KUBE_KEY}" 2>"$LOG"
ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" "ubuntu@${KUBE_MASTER_IP}" sudo cat /srv/kubernetes/ca.crt >"${CA_CERT}" 2>"$LOG"
create-kubeconfig
)
echo "Sanity checking cluster..."
sleep 5
# Don't bail on errors, we want to be able to print some info.
set +e
# Basic sanity checking
local rc # Capture return code without exiting because of errexit bash option
for (( i=0; i<${#MINION_NAMES[@]}; i++)); do
# Make sure docker is installed and working.
local attempt=0
while true; do
local minion_name=${MINION_NAMES[$i]}
local minion_ip=${KUBE_MINION_IP_ADDRESSES[$i]}
echo -n Attempt "$(($attempt+1))" to check Docker on node "${minion_name} @ ${minion_ip}" ...
local output=$(ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" ubuntu@$minion_ip sudo docker ps -a 2>/dev/null)
if [[ -z "${output}" ]]; then
if (( attempt > 9 )); then
echo
echo -e "${color_red}Docker failed to install on node ${minion_name}. Your cluster is unlikely" >&2
echo "to work correctly. Please run ./cluster/kube-down.sh and re-create the" >&2
echo -e "cluster. (sorry!)${color_norm}" >&2
exit 1
fi
# TODO: Reintroduce this (where does this container come from?)
# elif [[ "${output}" != *"kubernetes/pause"* ]]; then
# if (( attempt > 9 )); then
# echo
# echo -e "${color_red}Failed to observe kubernetes/pause on node ${minion_name}. Your cluster is unlikely" >&2
# echo "to work correctly. Please run ./cluster/kube-down.sh and re-create the" >&2
# echo -e "cluster. (sorry!)${color_norm}" >&2
# exit 1
# fi
else
echo -e " ${color_green}[working]${color_norm}"
break
fi
echo -e " ${color_yellow}[not working yet]${color_norm}"
# Start Docker, in case it failed to start.
ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" ubuntu@$minion_ip sudo service docker start > $LOG 2>&1
attempt=$(($attempt+1))
sleep 30
done
done
echo
echo -e "${color_green}Kubernetes cluster is running. The master is running at:"
echo
echo -e "${color_yellow} https://${KUBE_MASTER_IP}"
echo
echo -e "${color_green}The user name and password to use is located in ${KUBECONFIG}.${color_norm}"
echo
}
function kube-down {
local vpc_id=$(get_vpc_id)
if [[ -n "${vpc_id}" ]]; then
local elb_ids=$(get_elbs_in_vpc ${vpc_id})
if [[ -n "${elb_ids}" ]]; then
echo "Deleting ELBs in: ${vpc_id}"
for elb_id in ${elb_ids}; do
$AWS_ELB_CMD delete-load-balancer --load-balancer-name=${elb_id}
done
echo "Waiting for ELBs to be deleted"
while true; do
elb_ids=$(get_elbs_in_vpc ${vpc_id})
if [[ -z "$elb_ids" ]]; then
echo "All ELBs deleted"
break
else
echo "ELBs not yet deleted: $elb_ids"
echo "Sleeping for 3 seconds..."
sleep 3
fi
done
fi
echo "Deleting instances in VPC: ${vpc_id}"
instance_ids=$($AWS_CMD --output text describe-instances \
--filters Name=vpc-id,Values=${vpc_id} \
Name=tag:KubernetesCluster,Values=${CLUSTER_ID} \
--query Reservations[].Instances[].InstanceId)
if [[ -n "${instance_ids}" ]]; then
$AWS_CMD terminate-instances --instance-ids ${instance_ids} > $LOG
echo "Waiting for instances to be deleted"
while true; do
local instance_states=$($AWS_CMD describe-instances --instance-ids ${instance_ids} | expect_instance_states terminated)
if [[ -z "${instance_states}" ]]; then
echo "All instances deleted"
break
else
echo "Instances not yet deleted: ${instance_states}"
echo "Sleeping for 3 seconds..."
sleep 3
fi
done
fi
echo "Deleting VPC: ${vpc_id}"
default_sg_id=$($AWS_CMD --output text describe-security-groups \
--filters Name=vpc-id,Values=${vpc_id} Name=group-name,Values=default \
--query SecurityGroups[].GroupId \
| tr "\t" "\n")
sg_ids=$($AWS_CMD --output text describe-security-groups \
--filters Name=vpc-id,Values=${vpc_id} \
--query SecurityGroups[].GroupId \
| tr "\t" "\n")
for sg_id in ${sg_ids}; do
# EC2 doesn't let us delete the default security group
if [[ "${sg_id}" != "${default_sg_id}" ]]; then
$AWS_CMD delete-security-group --group-id ${sg_id} > $LOG
fi
done
subnet_ids=$($AWS_CMD --output text describe-subnets \
--filters Name=vpc-id,Values=${vpc_id} \
--query Subnets[].SubnetId \
| tr "\t" "\n")
for subnet_id in ${subnet_ids}; do
$AWS_CMD delete-subnet --subnet-id ${subnet_id} > $LOG
done
igw_ids=$($AWS_CMD --output text describe-internet-gateways \
--filters Name=attachment.vpc-id,Values=${vpc_id} \
--query InternetGateways[].InternetGatewayId \
| tr "\t" "\n")
for igw_id in ${igw_ids}; do
$AWS_CMD detach-internet-gateway --internet-gateway-id $igw_id --vpc-id $vpc_id > $LOG
$AWS_CMD delete-internet-gateway --internet-gateway-id $igw_id > $LOG
done
route_table_ids=$($AWS_CMD --output text describe-route-tables \
--filters Name=vpc-id,Values=$vpc_id \
Name=route.destination-cidr-block,Values=0.0.0.0/0 \
--query RouteTables[].RouteTableId \
| tr "\t" "\n")
for route_table_id in ${route_table_ids}; do
$AWS_CMD delete-route --route-table-id $route_table_id --destination-cidr-block 0.0.0.0/0 > $LOG
done
$AWS_CMD delete-vpc --vpc-id $vpc_id > $LOG
fi
}
# Update a kubernetes cluster with latest source
function kube-push {
detect-master
# Make sure we have the tar files staged on Google Storage
find-release-tars
upload-server-tars
(
echo "#! /bin/bash"
echo "mkdir -p /var/cache/kubernetes-install"
echo "cd /var/cache/kubernetes-install"
echo "readonly SERVER_BINARY_TAR_URL='${SERVER_BINARY_TAR_URL}'"
echo "readonly SALT_TAR_URL='${SALT_TAR_URL}'"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/common.sh"
grep -v "^#" "${KUBE_ROOT}/cluster/aws/templates/download-release.sh"
echo "echo Executing configuration"
echo "sudo salt '*' mine.update"
echo "sudo salt --force-color '*' state.highstate"
) | ssh -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" ubuntu@${KUBE_MASTER_IP} sudo bash
get-password
echo
echo "Kubernetes cluster is running. The master is running at:"
echo
echo " https://${KUBE_MASTER_IP}"
echo
}
# -----------------------------------------------------------------------------
# Cluster specific test helpers used from hack/e2e-test.sh
# Execute prior to running tests to build a release if required for env.
#
# Assumed Vars:
# KUBE_ROOT
function test-build-release {
# Make a release
"${KUBE_ROOT}/build/release.sh"
}
# Execute prior to running tests to initialize required structure. This is
# called from hack/e2e.go only when running -up (it is run after kube-up).
#
# Assumed vars:
# Variables from config.sh
function test-setup {
echo "test-setup complete"
}
# Execute after running tests to perform any required clean-up. This is called
# from hack/e2e.go
function test-teardown {
echo "Shutting down test cluster."
"${KUBE_ROOT}/cluster/kube-down.sh"
}
# SSH to a node by name ($1) and run a command ($2).
function ssh-to-node {
local node="$1"
local cmd="$2"
local ip=$(get_instance_public_ip ${node})
if [[ -z "$ip" ]]; then
echo "Could not detect IP for ${node}."
exit 1
fi
for try in $(seq 1 5); do
if ssh -oLogLevel=quiet -oStrictHostKeyChecking=no -i "${AWS_SSH_KEY}" ubuntu@${ip} "${cmd}"; then
break
fi
done
}
# Restart the kube-proxy on a node ($1)
function restart-kube-proxy {
ssh-to-node "$1" "sudo /etc/init.d/kube-proxy restart"
}
# Restart the kube-apiserver on a node ($1)
function restart-apiserver {
ssh-to-node "$1" "sudo /etc/init.d/kube-apiserver restart"
}
# Perform preparations required to run e2e tests
function prepare-e2e() {
# (AWS runs detect-project, I don't think we need to anything)
# Note: we can't print anything here, or else the test tools will break with the extra output
return
}
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