From 39210211f8a36060b4d58eff2ca88439653a3f4f Mon Sep 17 00:00:00 2001
From: techie2000
 <marcus.bullock@outlook.com–marcus.bullock@outlook.com–marcus.bullock@outlook.com–marcus.bullock@outlook.com>
Date: Fri, 9 Aug 2024 10:30:17 +0100
Subject: [PATCH] recognise the world is moving to journalctl

---
 36-diskstatus-journalctl              | 66 +++++++++++++++++++++++++++
 36-diskstatus => 36-diskstatus-syslog |  0
 README.md                             |  2 +-
 3 files changed, 67 insertions(+), 1 deletion(-)
 create mode 100755 36-diskstatus-journalctl
 rename 36-diskstatus => 36-diskstatus-syslog (100%)

diff --git a/36-diskstatus-journalctl b/36-diskstatus-journalctl
new file mode 100755
index 0000000..fc8d323
--- /dev/null
+++ b/36-diskstatus-journalctl
@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+
+# config
+MAX_TEMP=40
+# set column width
+COLUMNS=2
+# colors
+white="\e[39m"
+green="\e[1;32m"
+red="\e[1;31m"
+dim="\e[2m"
+undim="\e[0m"
+
+# disks to check
+disks=(sda sdb sdc sdd sde sdf sdg sdi)
+disknames=(sda sdb sdc sdd sde sdf sdg sdi)
+
+# hddtemp
+hddtemp_host=localhost
+hddtemp_port=7634
+
+# get all lines with smartd entries from journalctl
+lines=$(journalctl -u smartd --no-pager | grep -hiP 'smartd\[[[:digit:]]+\]:' | grep -iP "previous self-test")
+# use nc to query temps from hddtemp daemon
+hddtemp=$(timeout 0.01 nc $hddtemp_host $hddtemp_port | sed 's/|//m' | sed 's/||/ \n/g')
+
+out=""
+for i in "${!disks[@]}"; do
+    disk=${disks[$i]}
+    # use disknames if given
+    diskname=${disknames[$i]}
+    if [ -z "${diskname}" ]; then
+        diskname=$disk
+    fi
+    uuid=$(blkid -s UUID -o value "/dev/${disk}")
+    status=$( (grep "${uuid}" <<< "${lines}") | grep -m 1 -oP "previous self-test.*" | awk '{ print $4 " " $5 }')
+    temp=$( (grep "${disk}" <<< "${hddtemp}") | awk -F'|' '{ print $3 }')
+
+    # color green if temp <= MAX_TEMP, else red
+    if [[ "${temp}" -gt "${MAX_TEMP}" ]]; then
+        color=$red
+    else
+        color=$green
+    fi
+    # add "C" if temp is numeric
+    if [[ "$temp" =~ ^[0-9]+$ ]]; then
+        temp="${temp}C"
+    fi
+    # color green if status is "without error", else red
+    if [[ "${status}" == "without error" ]]; then
+        status_color=$green
+    else
+        status_color=$red
+    fi
+
+    # print temp & smartd error
+    out+="${diskname}:,${color}${temp}${undim} | ${status_color}${status}${undim},"
+    # insert \n every $COLUMNS column
+    if [ $((($i+1) % $COLUMNS)) -eq 0 ]; then
+        out+="\n"
+    fi
+done
+out+="\n"
+
+printf "\ndisk status:\n"
+printf "$out" | column -ts $',' | sed -e 's/^/  /'
\ No newline at end of file
diff --git a/36-diskstatus b/36-diskstatus-syslog
similarity index 100%
rename from 36-diskstatus
rename to 36-diskstatus-syslog
diff --git a/README.md b/README.md
index 5d34a9e..2894163 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ option set to `yes` in your sshd config.
 The duplicate files are different versions of the same, use either one of them. E.g. `30-zpool-simple`
 will not print usage bars.
 
-The script `36-smartd` greps syslog for smartd entries to read temperature and last self-test result.
+The script `36-smartd` greps syslog/journctl for smartd entries to read temperature and last self-test result.
 You have to enable smartd monitoring & run regular self-tests for it to display anything.
 
 If you use `50-fail2ban` you should comment out the `compress` option in `/etc/logrotate.d/fail2ban`,