Fix import for Grafana v6.7.3 #8

README.md

@@ -46,6 +46,75 @@ This graph shows the fping\_rtt summary as "SmokePing"-like graph in Grafana:
          replacement: 127.0.0.1:9605  # The fping-exporter's real hostname:port.
    ```
 
+## Installation for CentOS 8
+1. Install Go on RHEL 8 using and set PATH :
+```
+[root@prometheus ~]# sudo yum module -y install go-toolset
+[root@prometheus ~]# vi ~/.bash_profile
+[root@prometheus ~]# export PATH=$PATH:/usr/bin/go
+[root@prometheus ~]# source ~/.bash_profile
+```
+2. Install fping on RHEL 8 using :
+```
+[root@prometheus ~]# yum install -y fping
+```
+3. Download and compile fping-exporter on RHEL 8 using :
+```
+[root@prometheus ~]# git clone https://github.com/schweikert/fping-exporter.git /tmp/fping-exporter
+[root@prometheus ~]# go build -o /tmp/fping-exporter
+[root@prometheus ~]# cp fping-exporter /usr/local/bin
+```
+4. Next, adjust the firewall as follows to allow external connections to the server via port 9605
+```
+[root@prometheus ~]# firewall-cmd --add-port=9605/tcp --permanent
+[root@prometheus ~]# firewall-cmd --reload
+```
+5. Creating a Systemd service file for fping-exporter (For us to manage fping-exporter as a service using systemd, we need to create a system file for it. So, create the file as shown and paste the content,)
+```
+[root@prometheus ~]# vi /etc/systemd/system/fping-exporter.service
+```
+
+```
+[Unit]
+Description=fping-exporter allows you to run measure network latency using fping and prometheus
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+User=root
+Group=root
+Type=simple
+CapabilityBoundingSet=CAP_NET_RAW
+AmbientCapabilities=CAP_NET_RAW
+
+# Application Options:
+#   -l, --listen=[HOST]:PORT    Listen address (default: :9605)
+#   -p, --period=SECS           Period in seconds, should match Prometheus scrape interval (default: 60)
+#   -f, --fping=PATH            Fping binary path (default: /usr/bin/fping)
+#   -c, --count=N               Number of pings to send at each period (default: 20)
+
+ExecStart=/usr/local/bin/fping-exporter \
+    -f /usr/sbin/fping \
+    -p 300 \
+    -c 5
+
+[Install]
+WantedBy=multi-user.target
+```
+6. For the changes to take effect, reload the systemctl :
+```
+[root@prometheus ~]# systemctl daemon-reload
+```
+7. Now start and enable fping-exporter to run on boot
+```
+[root@prometheus ~]# systemctl start fping-exporter
+[root@prometheus ~]# systemctl enable fping-exporter
+```
+8. Just to be certain that fping-exporter is running, run the command:
+```
+[root@prometheus ~]# systemctl status fping-exporter
+```
+
 ## Metrics
 
 fping-exporter produces the following metrics: