Fix permissions of etcd binaries (#47)

and make it possible to specify ScalyrRegion and ScalyrAccountKey

Dockerfile

@@ -22,11 +22,17 @@ RUN export DEBIAN_FRONTEND=noninteractive \
 ## Install etcd
 
 ARG ETCDVERSION_PREV=3.0.17
-RUN curl -L https://github.com/coreos/etcd/releases/download/v${ETCDVERSION_PREV}/etcd-v${ETCDVERSION_PREV}-linux-amd64.tar.gz | tar xz -C /bin --xform='s/$/.old/x' --strip=1 --wildcards --no-anchored etcd
+RUN curl -L https://github.com/coreos/etcd/releases/download/v${ETCDVERSION_PREV}/etcd-v${ETCDVERSION_PREV}-linux-amd64.tar.gz \
+        | tar xz -C /bin --xform='s/$/.old/x' --strip=1 --wildcards --no-anchored etcd \
+    && chown root:root /bin/etcd.old \
+    && chmod +x /bin/etcd.old
 
 ARG ETCDVERSION=3.1.10
 ENV ETCDVERSION=$ETCDVERSION
-RUN curl -L https://github.com/coreos/etcd/releases/download/v${ETCDVERSION}/etcd-v${ETCDVERSION}-linux-amd64.tar.gz | tar xz -C /bin --strip=1 --wildcards --no-anchored etcd etcdctl
+RUN curl -L https://github.com/coreos/etcd/releases/download/v${ETCDVERSION}/etcd-v${ETCDVERSION}-linux-amd64.tar.gz \
+        | tar xz -C /bin --strip=1 --wildcards --no-anchored etcd etcdctl \
+    && chown root:root /bin/etcd /bin/etcdctl \
+    && chmod +x /bin/etcd /bin/etcdctl
 
 COPY etcd.py /bin/etcd.py
 COPY scm-source.json /scm-source.json

etcd-cluster.yaml

@@ -23,7 +23,8 @@ SenzaComponents:
           filesystem: tmpfs
           erase_on_boot: false
           options: size=1024m
-      appdynamics_application: 'etcd-cluster-{{Arguments.version}}'
+      scalyr_region: '{{Arguments.ScalyrRegion}}'
+      scalyr_account_key: '{{Arguments.ScalyrAccountKey}}'
     Type: Senza::TaupageAutoScalingGroup
     AutoScaling:
       Minimum: 5
@@ -35,6 +36,12 @@ SenzaInfo:
       Description: AWS Hosted Zone to work with
   - DockerImage:
       Description: Docker image of etcd-cluster.
+  - ScalyrAccountKey:
+      Description: Key for writing logs to scalyr
+      Default: ''
+  - ScalyrRegion:
+      Description: Scalyr region
+      Default: 'eu'
   StackName: etcd-cluster
 Resources:
   EtcdSecurityGroup: