From 52764e5bedebfec4caed82df1d6cefbcaab11399 Mon Sep 17 00:00:00 2001
From: samuel-p <codes@samuel-philipp.de>
Date: Sun, 16 May 2021 00:27:56 +0200
Subject: [PATCH] updated node_exporter scripts

---
 README.md                        | 28 ++++++++++++++++++++++++++--
 login-notify.sh                  |  4 ++--
 node_dir_size_exporter.sh        |  8 --------
 node_exporter/active-sessions.sh |  9 +++++++++
 node_exporter/directory-size.sh  |  5 +++++
 5 files changed, 42 insertions(+), 12 deletions(-)
 delete mode 100644 node_dir_size_exporter.sh
 create mode 100644 node_exporter/active-sessions.sh
 create mode 100644 node_exporter/directory-size.sh

diff --git a/README.md b/README.md
index 885b154..7ec2b49 100644
--- a/README.md
+++ b/README.md
@@ -11,15 +11,24 @@ Some useful bash scripts.
 |[validate-remote-backup.sh](validate-remote-backup.sh)|Script to validate server side rsync command to use ssh force command|
 |[docker-compose-up-all.sh](docker-compose-up-all.sh)|Script to call `docker-compose up -d` on all subdirectories|
 |[docker-stack-deploy-all.sh](docker-stack-deploy-all.sh)|Script to call `docker stack deploy` on all subdirectories|
-|[node_dir_size_exporter.sh](node_dir_size_exporter.sh)|Script to call `du` on a given directory to export the size to prometheus|
+|[node_dir_size_exporter.sh](node_exporter/directory-size.sh)|Script to call `du` on a given directory to export the size to prometheus|
 |[update-notify.sh](update-notify.sh)|Script to call `apt` to check the host for new updates and notify in gotify|
 
+__node_exporter__
+
+|Script|Description|
+|---|---|
+|[active-sessions.sh](node_exporter/active-sessions.sh)|Script to export all active sessions to prometheus|
+|[directory-size.sh](node_exporter/directory-size.sh)|Script to export directory sizes to prometheus|
+
+
 ## Setup
 
 To set up all scripts in the current directory run this:
 
 ```
-curl https://git.sp-codes.de/samuel-p/awesome-scripts/raw/branch/master/setup.sh | bash -s healthcheck.sh login-notify.sh validate-remote-backup.sh docker-compose-up-all.sh docker-stack-deploy-all.sh node_dir_size_exporter.sh update-notify.sh
+curl https://git.sp-codes.de/samuel-p/awesome-scripts/raw/branch/master/setup.sh | bash -s healthcheck.sh login-notify.sh validate-remote-backup.sh docker-compose-up-all.sh docker-stack-deploy-all.sh update-notify.sh
+curl https://git.sp-codes.de/samuel-p/awesome-scripts/raw/branch/master/setup.sh | bash -s active-sessions.sh directory-size.sh
 ```
 
 ## Usage
@@ -41,3 +50,18 @@ Place a `.gotify` file in the same direction as the script and put the applicati
 ```
 session optional pam_exec.so seteuid /path/to/login-notify.sh
 ```
+
+### node_exporter
+
+Add the following in crontab:
+
+```
+*/5 * * * * /root/exporter/directory-size.sh "<your_dir_pattern>" "<your_key>" | sponge /path/to/textfiles/directory-size.prom
+* * * * * /root/exporter/active-sessions.sh | sponge /path/to/textfiles/active-sessions.prom
+```
+
+Add the `textfiles` dir as param to `node_exporter`:
+
+```
+node_exporter --collector.textfile.directory /path/to/textfiles ...
+```
diff --git a/login-notify.sh b/login-notify.sh
index 2c26a81..cbd2727 100644
--- a/login-notify.sh
+++ b/login-notify.sh
@@ -3,8 +3,8 @@
 GOTIFY_FILE=$(<~/.gotify)
 GOTIFY_TOKEN=${GOTIFY_FILE##*( )}
 HOST="$(hostname)"
-sender="SSH-Notification <notifications@sp-codes.de>"
-recipient="codes@samuel-philipp.de"
+sender="SSH-Notification <mail>"
+recipient="<mail>"
 subject="SSH Login: $PAM_USER from $PAM_RHOST on $HOST"
 message="User $PAM_USER logged in on $HOST from $PAM_RHOST at $(date)."
 
diff --git a/node_dir_size_exporter.sh b/node_dir_size_exporter.sh
deleted file mode 100644
index 7ee98e5..0000000
--- a/node_dir_size_exporter.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/bash
-
-DIR=$1
-KEY=$2
-FILE=$3
-
-du -bsx $DIR | sed "s/\([0-9]*\).*\/\(.*\)/node_dir_size{name=\"\2\",key=\"$KEY\"} \1/" > "$FILE$$"
-mv "$FILE$$" "$FILE"
diff --git a/node_exporter/active-sessions.sh b/node_exporter/active-sessions.sh
new file mode 100644
index 0000000..d5f68c6
--- /dev/null
+++ b/node_exporter/active-sessions.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+ALL_SESSIONS=$(who | wc -l)
+ROOT_SESSIONS=$(who | grep root | wc -l)
+
+echo "# HELP node_active_sessions active sessions by type."
+echo "# TYPE node_active_sessions gauge"
+echo "node_active_sessions{type=\"all\"} $ALL_SESSIONS"
+echo "node_active_sessions{type=\"root\"} $ROOT_SESSIONS"
diff --git a/node_exporter/directory-size.sh b/node_exporter/directory-size.sh
new file mode 100644
index 0000000..21da1ad
--- /dev/null
+++ b/node_exporter/directory-size.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+echo "# HELP node_directory_size_bytes Disk space used by some directories"
+echo "# TYPE node_directory_size_bytes gauge"
+du -bsx "$1" | sed "s/\([0-9]*\).*\/\(.*\)/node_directory_size_bytes{name=\"\2\",key=\"$2\"} \1/"