From 4fc86317c8a6000ca8fb4bf36b1b02c3dab71c4b Mon Sep 17 00:00:00 2001
From: Tony Murray <murraytony@gmail.com>
Date: Mon, 11 Jul 2022 23:59:28 -0500
Subject: [PATCH] rrdcached sidecar/included.

---
 Dockerfile                                 |  5 ++-
 examples/compose/docker-compose.yml        | 27 +++++++++++++
 rootfs/etc/cont-init.d/03-config.sh        |  5 +++
 rootfs/etc/cont-init.d/09-svc-rrdcached.sh | 44 ++++++++++++++++++++++
 4 files changed, 79 insertions(+), 2 deletions(-)
 create mode 100644 rootfs/etc/cont-init.d/09-svc-rrdcached.sh

diff --git a/Dockerfile b/Dockerfile
index cc7c510..e55fbd9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -60,6 +60,7 @@ RUN apk --update --no-cache add \
     python3 \
     py3-pip \
     rrdtool \
+    rrdtool-cached \
     runit \
     shadow \
     syslog-ng=3.30.1-r4 \
@@ -109,7 +110,7 @@ RUN apk --update --no-cache add -t build-dependencies \
     linux-headers \
     musl-dev \
     python3-dev \
-  && git clone --branch ${LIBRENMS_VERSION} https://github.com/librenms/librenms.git . \
+  && git clone --depth 1 --branch ${LIBRENMS_VERSION} https://github.com/librenms/librenms.git . \
   && pip3 install --ignore-installed -r requirements.txt --upgrade \
   && COMPOSER_CACHE_DIR="/tmp" composer install --no-dev --no-interaction --no-ansi \
   && mkdir config.d \
@@ -129,7 +130,7 @@ RUN apk --update --no-cache add -t build-dependencies \
 
 COPY rootfs /
 
-EXPOSE 8000 514 514/udp 162 162/udp
+EXPOSE 8000 42217 514 514/udp 162 162/udp
 VOLUME [ "/data" ]
 
 ENTRYPOINT [ "/init" ]
diff --git a/examples/compose/docker-compose.yml b/examples/compose/docker-compose.yml
index 6ae9b2d..d95abdf 100644
--- a/examples/compose/docker-compose.yml
+++ b/examples/compose/docker-compose.yml
@@ -61,6 +61,7 @@ services:
       - "DB_USER=${MYSQL_USER}"
       - "DB_PASSWORD=${MYSQL_PASSWORD}"
       - "DB_TIMEOUT=60"
+      - "RRDCACHED_SERVER=rrdcached:42217"
       - "REDIS_HOST=redis"
       - "REDIS_PORT=6379"
       - "REDIS_DB=0"
@@ -89,6 +90,7 @@ services:
       - "DB_USER=${MYSQL_USER}"
       - "DB_PASSWORD=${MYSQL_PASSWORD}"
       - "DB_TIMEOUT=60"
+      - "RRDCACHED_SERVER=rrdcached:42217"
       - "DISPATCHER_NODE_ID=dispatcher1"
       - "REDIS_HOST=redis"
       - "REDIS_PORT=6379"
@@ -162,3 +164,28 @@ services:
       - "DB_TIMEOUT=60"
       - "SIDECAR_SNMPTRAPD=1"
     restart: always
+
+  rrdcached:
+    image: librenms/librenms:latest
+    container_name: librenms_rrdcached
+    hostname: librenms-rrdcached
+    cap_add:
+      - NET_ADMIN
+      - NET_RAW
+    depends_on:
+      - librenms
+    ports:
+      - target: 42217
+        published: 42217
+        protocol: tcp
+    volumes:
+      - "./librenms:/data"
+    env_file:
+      - "./librenms.env"
+    environment:
+      - "TZ=${TZ}"
+      - "PUID=${PUID}"
+      - "PGID=${PGID}"
+      - "SIDECAR_RRDCACHED=1"
+      - "RRDCACHED_SERVER=rrdcached:42217"
+    restart: always
diff --git a/rootfs/etc/cont-init.d/03-config.sh b/rootfs/etc/cont-init.d/03-config.sh
index 6c732f1..249e9b0 100644
--- a/rootfs/etc/cont-init.d/03-config.sh
+++ b/rootfs/etc/cont-init.d/03-config.sh
@@ -33,6 +33,7 @@ LISTEN_IPV6=${LISTEN_IPV6:-true}
 REAL_IP_FROM=${REAL_IP_FROM:-"0.0.0.0/32"}
 REAL_IP_HEADER=${REAL_IP_HEADER:-"X-Forwarded-For"}
 LOG_IP_VAR=${LOG_IP_VAR:-remote_addr}
+STANDALONE=${STANDALONE:-0}
 
 MEMCACHED_PORT=${MEMCACHED_PORT:-11211}
 
@@ -172,6 +173,10 @@ EOL
 fi
 
 # Config : RRDcached
+if [ -n "${STANDALONE}" ]; then
+RRDCACHED_SERVER="127.0.0.1:42217"
+fi
+
 if [ -n "${RRDCACHED_SERVER}" ]; then
     cat > ${LIBRENMS_PATH}/config.d/rrdcached.php <<EOL
 <?php
diff --git a/rootfs/etc/cont-init.d/09-svc-rrdcached.sh b/rootfs/etc/cont-init.d/09-svc-rrdcached.sh
new file mode 100644
index 0000000..627e3e1
--- /dev/null
+++ b/rootfs/etc/cont-init.d/09-svc-rrdcached.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/with-contenv sh
+
+STANDALONE=${STANDALONE:-0}
+SIDECAR_RRDCACHED=${SIDECAR_RRDCACHED:-0}
+
+# Continue only if sidecar rrdcached container
+if [ "$STANDALONE" == "1" ]; then
+  echo "Configuring rrdcached in stand-alone mode"
+elif [ "$SIDECAR_RRDCACHED" != "1" ]; then
+  exit 0
+else
+  echo ">>"
+  echo ">> Sidecar rrdcached container detected"
+  echo ">>"
+fi
+
+RRDCACHED_WRITE_TIMEOUT=${RRDCACHED_WRITE_TIMEOUT:-1800}
+RRDCACHED_WRITE_JITTER=${RRDCACHED_WRITE_JITTER:-1800}
+RRDCACHED_WRITE_THREADS=${RRDCACHED_WRITE_THREADS:-4}
+RRDCACHED_FLUSH_INTERVAL=${RRDCACHED_FLUSH_INTERVAL:-3600}
+
+mkdir -p /data/rrdcached /var/lib/rrdcached /run/rrdcached
+chown -R librenms. /data/rrdcached /run/rrdcached
+
+# Create service
+mkdir -p /etc/services.d/rrdcached
+cat > /etc/services.d/rrdcached/run <<EOL
+#!/usr/bin/execlineb -P
+with-contenv
+/usr/sbin/rrdcached \
+ -g -B -R -F \
+ -w ${RRDCACHED_WRITE_TIMEOUT} \
+ -z ${RRDCACHED_WRITE_JITTER} \
+ -f ${RRDCACHED_FLUSH_INTERVAL} \
+ -t ${RRDCACHED_WRITE_THREADS} \
+ -U librenms -G librenms \
+ -p /run/rrdcached/rrdcached.pid \
+ -j /var/lib/rrdcached/journal/ \
+ -V LOG_DEBUG \
+ -l 0:42217 \
+ -b /data/rrd/
+EOL
+chmod +x /etc/services.d/rrdcached/run
+