From 1bf04d98725ca39aa122c07bb6194a406a934c62 Mon Sep 17 00:00:00 2001
From: Francesco Minnocci <ad17fmin@uwcad.it>
Date: Sun, 24 Dec 2023 16:49:47 +0100
Subject: [PATCH] feat: add scripts to get stats from master node

---
 backend/scripts/cpu.sh     | 6 ++++++
 backend/scripts/memory.sh  | 6 ++++++
 backend/scripts/network.sh | 6 ++++++
 backend/scripts/storage.sh | 6 ++++++
 backend/scripts/uptime.sh  | 6 ++++++
 5 files changed, 30 insertions(+)
 create mode 100644 backend/scripts/cpu.sh
 create mode 100644 backend/scripts/memory.sh
 create mode 100644 backend/scripts/network.sh
 create mode 100644 backend/scripts/storage.sh
 create mode 100644 backend/scripts/uptime.sh

diff --git a/backend/scripts/cpu.sh b/backend/scripts/cpu.sh
new file mode 100644
index 0000000..a1b45b0
--- /dev/null
+++ b/backend/scripts/cpu.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Returns CPU percentages of all machines in the cluster
+# Example output: steffe3 3.5
+
+parallel --nonall --slf /home/rock/macchine.txt top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | sed "s/^/100 - /" | bc
diff --git a/backend/scripts/memory.sh b/backend/scripts/memory.sh
new file mode 100644
index 0000000..779b90c
--- /dev/null
+++ b/backend/scripts/memory.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Returns used and total memory (in MB) of all machines in the cluster
+# Example output: steffe1 141 3814
+
+parallel --nonall --slf /home/rock/macchine.txt 'echo $HOSTNAME $(free -m | awk '\''/Mem/{print $3" "$2}'\'')'
diff --git a/backend/scripts/network.sh b/backend/scripts/network.sh
new file mode 100644
index 0000000..424315f
--- /dev/null
+++ b/backend/scripts/network.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Returns received and transmitted bytes of all machines in the cluster
+# Example output: steffe14 3581663131 3305835017
+
+parallel --nonall --slf /home/rock/macchine.txt 'echo $HOSTNAME $(cat /sys/class/net/[e]*/statistics/{r,t}x_bytes)'
diff --git a/backend/scripts/storage.sh b/backend/scripts/storage.sh
new file mode 100644
index 0000000..d29397f
--- /dev/null
+++ b/backend/scripts/storage.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Returns used and free disk space of all machines in the cluster
+# Example output: steffe8 9.2G 47G
+
+parallel --nonall --slf /home/rock/macchine.txt 'echo $HOSTNAME $(df -Ph | grep mmcblk0p5 | awk '\''{print $3" "$4}'\'')'
diff --git a/backend/scripts/uptime.sh b/backend/scripts/uptime.sh
new file mode 100644
index 0000000..68ca2df
--- /dev/null
+++ b/backend/scripts/uptime.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Returns Unix uptime, in seconds, of all machines in the cluster
+# Example output: steffe1 1656959
+
+parallel --nonall --slf /home/rock/macchine.txt 'echo $HOSTNAME $(cut -f1 -d. /proc/uptime)'