added loki, prometheus, promtail, statist

prometheus/Dockerfile

@@ -0,0 +1,8 @@
+FROM centos:7
+RUN yum update -y && yum clean all
+RUN curl -O -L "https://github.com/prometheus/prometheus/releases/download/v2.25.0/prometheus-2.25.0.linux-amd64.tar.gz" && tar -xf prometheus-2.25.0.linux-amd64.tar.gz -C / && mv /prometheus-2.25.0.linux-amd64 /prometheus && rm prometheus-2.25.0.linux-amd64.tar.gz && cd /prometheus && chmod a+x "prometheus"
+COPY config.yaml /prometheus
+COPY docker-entrypoint.sh /
+RUN chmod +x /docker-entrypoint.sh
+ENTRYPOINT ["/docker-entrypoint.sh"]
+CMD ["/prometheus/prometheus","--config.file=/prometheus/config.yaml"]

prometheus/config.yaml

@@ -0,0 +1,19 @@
+global:
+  scrape_interval:     15s # By default, scrape targets every 15 seconds.
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  external_labels:
+    monitor: 'codelab-monitor'
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: 5s
+
+    static_configs:
+      - targets: ['localhost:9090']

prometheus/docker-entrypoint.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+
+if [[ (! -z "${PROMETHEUS_DAEMON_USER}" ) && ( "${PROMETHEUS_DAEMON_USER}" != "root"  ) ]]; then
+	useradd -r -s /bin/false $PROMETHEUS_DAEMON_USER
+	if [[ ! -z "${PROMETHEUS_DAEMON_USER_UID}" ]]; then
+		usermod -u $PROMETHEUS_DAEMON_USER_UID $PROMETHEUS_DAEMON_USER
+	fi
+	if [[ ! -z "${PROMETHEUS_DAEMON_USER_GID}" ]]; then
+		groupmod -g $PROMETHEUS_DAEMON_USER_GID $PROMETHEUS_DAEMON_USER
+	fi
+fi
+
+echo "Chowning Data"
+if [[ ! -z "${PROMETHEUS_DAEMON_USER}" ]]; then
+	chown -R $(id -u ${PROMETHEUS_DAEMON_USER}):$(id -g ${PROMETHEUS_DAEMON_USER}) /prometheus
+else
+	chown -R $(id -u):$(id -g) /prometheus
+fi
+
+
+if [[ ! -z "${PROMETHEUS_DAEMON_USER}" ]]; then
+	runuser -u ${PROMETHEUS_DAEMON_USER} -- $@
+else
+	$@	
+fi