From 3edb48e45346aeeef7b9d73aa1cec4e9076957e4 Mon Sep 17 00:00:00 2001
From: Simon Cornet <simon.cornet@itcreation.nl>
Date: Tue, 22 Aug 2023 09:16:23 +0200
Subject: [PATCH] [Zabbix] Add simple Zabbix scripts

---
 Linux/zabbix/check_service.sh | 27 ++++++++++++++++++++++
 Linux/zabbix/cleanup_disk.sh  | 43 +++++++++++++++++++++++++++++++++++
 Linux/zabbix/cleanup_swap.sh  | 10 ++++++++
 3 files changed, 80 insertions(+)
 create mode 100755 Linux/zabbix/check_service.sh
 create mode 100644 Linux/zabbix/cleanup_disk.sh
 create mode 100644 Linux/zabbix/cleanup_swap.sh

diff --git a/Linux/zabbix/check_service.sh b/Linux/zabbix/check_service.sh
new file mode 100755
index 0000000..05545a6
--- /dev/null
+++ b/Linux/zabbix/check_service.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# Find service name from argument
+monitorService=$1
+
+# Check if $monitorService is empty
+if [ -z "$monitorService" ]; then
+  read -p "Please pass me the service name: " monitorService
+fi
+
+
+# Define the check_service function
+function check_service {
+
+  # Check if the service is active and report so
+  if systemctl is-active --quiet $monitorService; then
+    echo "$monitorService is running"
+
+  # If the service is not running, exit with an error.
+  else
+    echo "$monitorService is not running"
+    exit 1
+  fi
+}
+
+# Excecute the check_service function
+check_service
diff --git a/Linux/zabbix/cleanup_disk.sh b/Linux/zabbix/cleanup_disk.sh
new file mode 100644
index 0000000..fa23e86
--- /dev/null
+++ b/Linux/zabbix/cleanup_disk.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+# Prune container images
+if [ -x "$(command -v docker)" ]; then
+  echo "Pruning using Docker"
+  sudo docker image prune -af
+
+elif [ -x "$(command -v podman)" ]; then
+  echo "Pruning using Podman"
+  sudo podman image prune -af
+
+else
+  echo "No container images to prune"
+fi
+
+
+# Remove all disabled snaps
+if [ -x "$(command -v snap)" ]; then
+  echo "Remove all deactivated snaps"
+  sudo snap list --all | \
+    awk '/disabled/{print $1, $3}' | \
+    while read snapname revision; do \
+      sudo snap remove "$snapname" --revision="$revision";
+    done
+else
+  echo "No snaps found"
+fi
+
+
+# Flush and rotate all logs
+if [ -x "$(command -v journalctl)" ]; then
+  echo "Vacuuming logs using journalctl"
+  sudo journalctl \
+    --flush \
+    --rotate \
+    --vacuum-time=1s
+else
+  echo "JournalCTL not found"
+fi
+
+# remove zipped logs
+echo "Delete zipped logs"
+sudo rm -rf /var/log/*.gz
diff --git a/Linux/zabbix/cleanup_swap.sh b/Linux/zabbix/cleanup_swap.sh
new file mode 100644
index 0000000..3dd30e5
--- /dev/null
+++ b/Linux/zabbix/cleanup_swap.sh
@@ -0,0 +1,10 @@
+# Clear swapusage
+free_memory=`free -m | awk 'NR==2{print $7}'`
+used_swap=`free -m | awk 'NR==3{print $3}'`
+
+if [ $free_memory -gt $used_swap ]; then
+  sudo swapoff -a && sudo swapon -a
+  echo "Swap usage cleared!"
+else
+  echo "Cannot clear swapusage, not enough memory!"
+fi2