In CentOS wget does not exist by default. And when it is not there, the or logic does not work as wanted. (#309)

Bugfix: module init-snippet-attach-ebs-volume

In CentOS `wget` does not exist by default. And when it is not there, the or logic does not work as wanted.

Author: Magicloud

CHANGELOG.md

@@ -9,6 +9,33 @@
 
 ### Examples
 
+# v0.9.14
+
+### Summary
+
+New modules and function extendings.
+
+### Modules
+
+* dlm-lifecycle-policy: Merge dlm-lifecycle-iam-role.
+
+* init-snippet-install-docker-yum: CentOS script to install docker/docker-compose.
+
+* init-snippet-attach-ebs-volume: Working on CentOS now. Generates required device name now despite Linux differences.
+
+* single-node-asg: Output the attached EBS Name tag for DLM to match.
+
+* rds: RDS database.
+
+* s3-remote-state: fix for #286.
+
+* asg: add protect_from_scale_in and suspended_processes attrs.
+
+### Examples
+
+* No changes
+
+
 # v0.9.13
 
 ### Summary

modules/init-snippet-attach-ebs-volume/snippet.tpl

@@ -2,24 +2,33 @@
 ${init_prefix}
 export AWS_DEFAULT_REGION=${region}
 VOLUME_ID=${volume_id}
-INSTANCE_ID="$(wget -O- http://169.254.169.254/latest/meta-data/instance-id || curl http://169.254.169.254/latest/meta-data/instance-id)"
-echo "${log_prefix} will attach $${VOLUME_ID} via the AWS API in ${region}"
-while ! aws ec2 attach-volume                     \
+if which wget; then
+  INSTANCE_ID="$(wget -O- http://169.254.169.254/latest/meta-data/instance-id)"
+elif which curl; then
+  INSTANCE_ID="$(curl http://169.254.169.254/latest/meta-data/instance-id)"
+fi
+
+if [ "x$${INSTANCE_ID}" == "x" ]; then
+  echo 'OS not functioning'
+else
+  echo "${log_prefix} will attach $${VOLUME_ID} via the AWS API in ${region}"
+  while ! aws ec2 attach-volume                     \
           --volume-id "$${VOLUME_ID}"     \
           --instance-id "$${INSTANCE_ID}" \
           --device '${device_path}'; do
-  echo "Attaching command failed to run. Retrying."
-  sleep '${wait_interval}'
-done
-echo "${log_prefix} $${VOLUME_ID} attached."
-
-vol_id="$(echo "$${VOLUME_ID}" | tr -d '-')"
-while [ ! -e /dev/disk/by-id/*-Amazon_Elastic_Block_Store_$${vol_id} ]; do
-  sleep '${wait_interval}' 
-done
-
-dev_id="$(ls /dev/disk/by-id/*-Amazon_Elastic_Block_Store_$${vol_id} | head -1)"
-dev_name="/dev/$(readlink "$${dev_id}" | tr / '\n' | tail -1)"
-[ "$${dev_name}" == "${device_path}" ] || ln -s "$${dev_name}" "${device_path}"
+    echo "Attaching command failed to run. Retrying."
+    sleep '${wait_interval}'
+  done
+  echo "${log_prefix} $${VOLUME_ID} attached."
+  
+  vol_id="$(echo "$${VOLUME_ID}" | tr -d '-')"
+  while [ ! -e /dev/disk/by-id/*-Amazon_Elastic_Block_Store_$${vol_id} ]; do
+    sleep '${wait_interval}' 
+  done
+  
+  dev_id="$(ls /dev/disk/by-id/*-Amazon_Elastic_Block_Store_$${vol_id} | head -1)"
+  dev_name="/dev/$(readlink "$${dev_id}" | tr / '\n' | tail -1)"
+  [ "$${dev_name}" == "${device_path}" ] || ln -s "$${dev_name}" "${device_path}"
+fi
 
 ${init_suffix}