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139 lines
3.9 KiB
Bash
Executable File
139 lines
3.9 KiB
Bash
Executable File
#!/bin/sh
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# Quick script to boot an instance from generated AMI. Intended to be invoked
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# from "alpine" directory.
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set -e
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JOINERS_COUNT=${JOINERS_COUNT:-1}
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METADATA="http://169.254.169.254/latest/meta-data"
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MANAGER_SG="docker-swarm-ingress"
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manager_sg_id()
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{
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aws ec2 describe-security-groups \
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--filter Name=group-name,Values=${MANAGER_SG} | jq -r .SecurityGroups[0].GroupId
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}
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attach_security_group()
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{
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MANAGER_SG_ID=$(manager_sg_id)
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if [ ${MANAGER_SG_ID} = "null" ]
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then
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CUR_INSTANCE_MAC=$(wget -qO- ${METADATA}/network/interfaces/macs)
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CUR_INSTANCE_VPC_CIDR=$(wget -qO- ${METADATA}/network/interfaces/macs/${CUR_INSTANCE_MAC}vpc-ipv4-cidr-block)
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MANAGER_SG_ID=$(aws ec2 create-security-group \
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--group-name ${MANAGER_SG} \
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--description "Allow inbound access to Docker API and for remote join node connection" | jq -r .GroupId)
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echo "Created security group ${MANAGER_SG_ID}"
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# Hack to wait for SG to be created before adding rules
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sleep 5
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# For Docker API
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aws ec2 authorize-security-group-ingress \
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--group-id ${MANAGER_SG_ID} \
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--protocol tcp \
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--port 2375 \
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--cidr ${CUR_INSTANCE_VPC_CIDR}
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# For Swarm join node connection
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aws ec2 authorize-security-group-ingress \
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--group-id ${MANAGER_SG_ID} \
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--protocol tcp \
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--port 4500 \
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--cidr ${CUR_INSTANCE_VPC_CIDR}
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fi
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aws ec2 modify-instance-attribute \
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--instance-id "$1" \
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--groups ${MANAGER_SG_ID}
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}
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poll_instance_log()
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{
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echo "Waiting for instance boot log to become available"
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INSTANCE_BOOT_LOG="null"
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while [ ${INSTANCE_BOOT_LOG} = "null" ]
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do
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INSTANCE_BOOT_LOG=$(aws ec2 get-console-output --instance-id "$1" | jq -r .Output)
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sleep 5
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done
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aws ec2 get-console-output --instance-id "$1" | jq -r .Output
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}
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OLD_INSTANCE_IDS=$(cat ./cloud/aws/instance_id.out | tr '\n' ' ')
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aws ec2 terminate-instances --instance-id ${OLD_INSTANCE_IDS} || true
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if [ ! -f ./cloud/aws/ami_id.out ]
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then
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echo "AMI ID to launch instance from not found"
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exit 1
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fi
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AMI_ID=$(cat ./cloud/aws/ami_id.out)
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echo "Using image ${AMI_ID}"
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MANAGER_INSTANCE_ID=$(aws ec2 run-instances \
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--image-id ${AMI_ID} \
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--instance-type t2.micro \
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--user-data file://./cloud/aws/manager-user-data.sh | jq -r .Instances[0].InstanceId)
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aws ec2 create-tags --resources ${MANAGER_INSTANCE_ID} --tags Key=Name,Value=$(whoami)-docker-swarm-manager
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echo "Running manager instance ${MANAGER_INSTANCE_ID}"
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# Deliberately truncate file here.
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echo ${MANAGER_INSTANCE_ID} >./cloud/aws/instance_id.out
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attach_security_group ${MANAGER_INSTANCE_ID}
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# User can set this variable to indicate they want a whole swarm.
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if [ ! -z "$JOIN_INSTANCES" ]
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then
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MANAGER_IP=$(aws ec2 describe-instances \
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--instance-id ${MANAGER_INSTANCE_ID} | jq -r .Reservations[0].Instances[0].NetworkInterfaces[0].PrivateIpAddresses[0].PrivateIpAddress)
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TMP_JOINER_USERDATA=/tmp/joiner-user-data-${MANAGER_INSTANCE_ID}.sh
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cat ./cloud/aws/joiner-user-data.sh | sed "s/{{MANAGER_IP}}/${MANAGER_IP}/" >${TMP_JOINER_USERDATA}
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JOINER_INSTANCE_IDS=$(aws ec2 run-instances \
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--image-id ${AMI_ID} \
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--instance-type t2.micro \
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--count ${JOINERS_COUNT} \
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--user-data file://${TMP_JOINER_USERDATA} | jq -r .Instances[].InstanceId)
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echo "Joining nodes:" ${JOINER_INSTANCE_IDS}
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NODE_NUMBER=0
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for ID in ${JOINER_INSTANCE_IDS}
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do
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echo "Tagging joiner instance #${NODE_NUMBER}: ${ID}"
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# For debugging purposes only. In "production" this SG should not be
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# attached to these instances.
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attach_security_group ${ID}
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# Do not truncate file here.
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echo ${ID} >>./cloud/aws/instance_id.out
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# TODO: Get list of ids and do this for each if applicable.
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aws ec2 create-tags --resources ${ID} --tags Key=Name,Value=$(whoami)-docker-swarm-joiner-${NODE_NUMBER}
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NODE_NUMBER=$((NODE_NUMBER+1))
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done
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exit
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fi
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echo "Waiting for manager to be running..."
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aws ec2 wait instance-running --instance-ids $(cat ./cloud/aws/instance_id.out | tr '\n' ' ')
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poll_instance_log ${MANAGER_INSTANCE_ID}
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