added loki, prometheus, promtail, statist

promtail/Dockerfile

@@ -0,0 +1,7 @@
+FROM centos:7
+RUN yum update -y && yum install -y unzip && yum clean all
+RUN curl -O -L "https://github.com/grafana/loki/releases/download/v2.1.0/promtail-linux-amd64.zip" && unzip promtail-linux-amd64.zip -d /promtail && rm promtail-linux-amd64.zip && cd /promtail && chmod a+x "promtail-linux-amd64"
+COPY config.yaml /promtail
+COPY docker-entrypoint.sh /
+RUN chmod +x /docker-entrypoint.sh
+ENTRYPOINT ["/docker-entrypoint.sh"]

promtail/config.yaml

@@ -0,0 +1,18 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://localhost:3100/loki/api/v1/push
+
+scrape_configs:
+- job_name: system
+  static_configs:
+  - targets:
+      - localhost
+    labels:
+      job: varlogs
+      __path__: /var/log/*log

promtail/docker-entrypoint.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+
+if [[ (! -z "${PROMTAIL_DAEMON_USER}" ) && ( "${PROMTAIL_DAEMON_USER}" != "root"  ) ]]; then
+	useradd -r -s /bin/false $PROMTAIL_DAEMON_USER
+	if [[ ! -z "${PROMTAIL_DAEMON_USER_UID}" ]]; then
+		usermod -u $PROMTAIL_DAEMON_USER_UID $PROMTAIL_DAEMON_USER
+	fi
+	if [[ ! -z "${PROMTAIL_DAEMON_USER_GID}" ]]; then
+		groupmod -g $PROMTAIL_DAEMON_USER_GID $PROMTAIL_DAEMON_USER
+	fi
+fi
+
+echo "Chowning Data"
+if [[ ! -z "${PROMTAIL_DAEMON_USER}" ]]; then
+	chown -R $(id -u ${PROMTAIL_DAEMON_USER}):$(id -g ${PROMTAIL_DAEMON_USER}) /promtail
+else
+	chown -R $(id -u):$(id -g) /promtail
+fi
+
+
+if [[ ! -z "${PROMTAIL_DAEMON_USER}" ]]; then
+	runuser -u ${PROMTAIL_DAEMON_USER} -- /promtail/promtail-linux-amd64 -config.file=/promtail/config.yaml
+else
+	/promtail/promtail-linux-amd64 -config.file=/promtail/config.yaml	
+fi