Configure AAI HA Proxy to distribute the load to multiple AAI service replicas. Added some useful tools for custom image of aai haproxy

Issue-ID: AAI-3588

Signed-off-by: Rommel Pawar <rommel.pawar@bell.ca>
Change-Id: Ibab655238c915c83b8a5b4a29cd5a4c1a3f19a0b

2 files changed, 20 insertions, 7 deletions

diff --git a/aai-common-docker/aai-haproxy-image/src/main/docker/Dockerfile b/aai-common-docker/aai-haproxy-image/src/main/docker/Dockerfile
index 3e04c92c..1508abca 100644
--- a/aai-common-docker/aai-haproxy-image/src/main/docker/Dockerfile
+++ b/aai-common-docker/aai-haproxy-image/src/main/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM haproxy:1.7.10-alpine
+FROM haproxy:2.4.13-alpine
 
 # For building the image in a proxy environment if necessary
 ARG HTTP_PROXY
@@ -9,14 +9,17 @@ ENV HTTPS_PROXY  ${HTTPS_PROXY}
 ENV http_proxy   ${HTTP_PROXY}
 ENV https_proxy  ${HTTPS_PROXY}
 
+# Added to execute commands which required root permission
+USER root
+
 RUN apk add --no-cache \
     ca-certificates \
     curl \
+    bash \
+    socat \
     openssl \
     shadow \
     util-linux && \
-    groupadd haproxy -g 1000 && \
-    adduser -u 1000 -S -D -G haproxy -s /bin/bash haproxy && \
     chown -R haproxy:haproxy /usr/local/etc/haproxy
 
 RUN mkdir -p /etc/ssl/certs/ && mkdir -p /etc/ssl/private
@@ -26,7 +29,15 @@ COPY --chown=haproxy docker-entrypoint.sh /docker-entrypoint.sh
 COPY --chown=haproxy resolvers.conf /usr/local/etc/haproxy/resolvers.conf
 COPY --chown=haproxy haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg
 
-RUN chmod +x /docker-entrypoint.sh
+# Changing group and group permission to allow haproxy user to execute sed comamnd ot change files
+RUN chgrp haproxy /usr/local/etc/haproxy; \
+    chgrp haproxy /docker-entrypoint.sh /usr/local/etc/haproxy/haproxy.cfg /usr/local/etc/haproxy/resolvers.conf
+
+RUN chmod +x /docker-entrypoint.sh; \
+    chmod g+wx /usr/local/etc/haproxy; \
+    chmod g+w /docker-entrypoint.sh /usr/local/etc/haproxy/haproxy.cfg /usr/local/etc/haproxy/resolvers.conf
+
+# Reverting to haproxy use to not run the pod with root permissions
 USER haproxy
 
 ENTRYPOINT [ "/docker-entrypoint.sh" ]
diff --git a/aai-common-docker/aai-haproxy-image/src/main/docker/docker-entrypoint.sh b/aai-common-docker/aai-haproxy-image/src/main/docker/docker-entrypoint.sh
index a56eea95..a8e521f1 100644
--- a/aai-common-docker/aai-haproxy-image/src/main/docker/docker-entrypoint.sh
+++ b/aai-common-docker/aai-haproxy-image/src/main/docker/docker-entrypoint.sh
@@ -14,9 +14,11 @@ sed -i 's/${ONAP_NAMESERVER_CLUSTER_IP}/'${NAMESERVER_IP}'/g' /usr/local/etc/hap
 }
 
 if [ "$1" = 'haproxy' ]; then
-    # if the user wants "haproxy", let's use "haproxy-systemd-wrapper" instead so we can have proper reloadability implemented by upstream
-    shift # "haproxy"
-    set -- "$(which haproxy-systemd-wrapper)" -p /usr/local/etc/haproxy/haproxy.pid "$@"
+	shift # "haproxy"
+	# if the user wants "haproxy", let's add a couple useful flags
+	#   -W  -- "master-worker mode" (similar to the old "haproxy-systemd-wrapper"; allows for reload via "SIGUSR2")
+	#   -db -- disables background mode
+	set -- haproxy -W -db "$@"
 fi
 
 exec "$@"