Costa's Wiki - User contributions [en]

Prometheus TSDB

2026-10-02T15:05:18Z

Costa:

;Oldest record in Prometheus
cd /home/costa/data/prometheus-data ;grep -r minTime --include meta.json | awk '{print $3}' | sort | head -n1 | rev| cut -c5- | rev | { read gmt ; date -d "@$gmt" ; }

snapshot https://gist.github.com/ksingh7/d5e4414d92241e0802e59fa4c585b98b

How to drop and delete metrics in Prometheus https://faun.pub/how-to-drop-and-delete-metrics-in-prometheus-7f5e6911fb33

;Find all unused metrics
mimirtool installation
curl -L -o mimirtool https://github.com/grafana/mimir/releases/latest/download/mimirtool-linux-amd64
chmod +x mimirtool
sudo mv mimirtool /usr/local/bin/mimirtool

Grafana token
glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a

curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"
mimirtool analyze prometheus --address=http://10.0.0.200:30900
jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

Delete unused metrics
<e.g.> curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
n=1 ; for i in `cat unused_metrics.txt`; do echo "$((n++)) $i" ; curl -X POST -g 'http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]='$i ; done
curl -XPOST 'http://10.0.0.200:30900/api/v1/admin/tsdb/clean_tombstones'

For reverse proxy:
<pre>
curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" \
http://10.0.0.200/grafana/api/dashboards/home

mimirtool analyze grafana \
--address=http://10.0.0.200/grafana \
--key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"

mimirtool analyze prometheus \
--address=http://10.0.0.200/prometheus

jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

# Delete unused metrics

curl -X POST -g 'http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total'
n=1 ; for i in $(cat unused_metrics.txt); do echo "$((n++)) $i" ; curl -X POST -g "http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=$i" ; done
curl -X POST http://10.0.0.200/prometheus/api/v1/admin/tsdb/clean_tombstones
</pre>

Prometheus TSDB

2026-10-02T15:04:17Z

Costa:

;Oldest record in Prometheus
cd /home/costa/data/prometheus-data ;grep -r minTime --include meta.json | awk '{print $3}' | sort | head -n1 | rev| cut -c5- | rev | { read gmt ; date -d "@$gmt" ; }

snapshot https://gist.github.com/ksingh7/d5e4414d92241e0802e59fa4c585b98b

How to drop and delete metrics in Prometheus https://faun.pub/how-to-drop-and-delete-metrics-in-prometheus-7f5e6911fb33

;Find all unused metrics
mimirtool installation
curl -L -o mimirtool https://github.com/grafana/mimir/releases/latest/download/mimirtool-linux-amd64
chmod +x mimirtool
sudo mv mimirtool /usr/local/bin/mimirtool

Grafana token
glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a

curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"
mimirtool analyze prometheus --address=http://10.0.0.200:30900
jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

Delete unused metrics
<e.g.> curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
n=1 ; for i in `cat unused_metrics.txt`; do echo "$((n++)) $i" ; curl -X POST -g 'http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]='$i ; done
curl -XPOST 'http://10.0.0.200:30900/api/v1/admin/tsdb/clean_tombstones'

For reverse proxy:
<pre>
curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" \
http://10.0.0.200/grafana/api/dashboards/home

mimirtool analyze grafana \
--address=http://10.0.0.200/grafana \
--key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"

mimirtool analyze prometheus \
--address=http://10.0.0.200/prometheus

jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

# Delete unused metrics

curl -X POST -g 'http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total'

n=1 ; for i in $(cat unused_metrics.txt); do echo "$((n++)) $i" ; curl -X POST -g "http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=$i" ; done

curl -X POST http://10.0.0.200/prometheus/api/v1/admin/tsdb/clean_tombstones
</pre>

Prometheus TSDB

2026-10-02T15:01:30Z

Costa:

;Oldest record in Prometheus
cd /home/costa/data/prometheus-data ;grep -r minTime --include meta.json | awk '{print $3}' | sort | head -n1 | rev| cut -c5- | rev | { read gmt ; date -d "@$gmt" ; }

snapshot https://gist.github.com/ksingh7/d5e4414d92241e0802e59fa4c585b98b

How to drop and delete metrics in Prometheus https://faun.pub/how-to-drop-and-delete-metrics-in-prometheus-7f5e6911fb33

;Find all unused metrics
mimirtool installation
curl -L -o mimirtool https://github.com/grafana/mimir/releases/latest/download/mimirtool-linux-amd64
chmod +x mimirtool
sudo mv mimirtool /usr/local/bin/mimirtool

Grafana token
glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a

curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"
mimirtool analyze prometheus --address=http://10.0.0.200:30900
jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

Delete unused metrics
<e.g.> curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
n=1 ; for i in `cat unused_metrics.txt`; do echo "$((n++)) $i" ; curl -X POST -g 'http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]='$i ; done
curl -XPOST 'http://10.0.0.200:30900/api/v1/admin/tsdb/clean_tombstones'

For reverse proxy:
<pre>
curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" \
http://10.0.0.200/grafana/api/dashboards/home

mimirtool analyze grafana \
--address=http://10.0.0.200/grafana \
--key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"

mimirtool analyze prometheus \
--address=http://10.0.0.200/prometheus

jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

# Delete unused metrics

curl -X POST -g 'http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total'

n=1
for i in $(cat unused_metrics.txt); do
echo "$((n++)) $i"
curl -X POST -g "http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=$i"
done

curl -X POST http://10.0.0.200/prometheus/api/v1/admin/tsdb/clean_tombstones
</pre>

Prometheus TSDB

2026-10-02T14:51:23Z

Costa:

;Oldest record in Prometheus
cd /home/costa/data/prometheus-data ;grep -r minTime --include meta.json | awk '{print $3}' | sort | head -n1 | rev| cut -c5- | rev | { read gmt ; date -d "@$gmt" ; }

snapshot https://gist.github.com/ksingh7/d5e4414d92241e0802e59fa4c585b98b

How to drop and delete metrics in Prometheus https://faun.pub/how-to-drop-and-delete-metrics-in-prometheus-7f5e6911fb33

;Find all unused metrics
mimirtool installation
curl -L -o mimirtool https://github.com/grafana/mimir/releases/latest/download/mimirtool-linux-amd64
chmod +x mimirtool
sudo mv mimirtool /usr/local/bin/mimirtool

Grafana token
glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a

curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"
mimirtool analyze prometheus --address=http://10.0.0.200:30900
jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

Delete unused metrics
<e.g.> curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
n=1 ; for i in `cat unused_metrics.txt`; do echo "$((n++)) $i" ; curl -X POST -g 'http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]='$i ; done
curl -XPOST 'http://10.0.0.200:30900/api/v1/admin/tsdb/clean_tombstones'

For reverse proxy:
curl -H "Authorization: Bearer glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a" \
http://10.0.0.200/grafana/api/dashboards/home

mimirtool analyze grafana \
--address=http://10.0.0.200/grafana \
--key="glsa_20cNpxZw8mXIqebza9wk7jcFKm3KfZFk_2efbc31a"

mimirtool analyze prometheus \
--address=http://10.0.0.200/prometheus

jq -r ".in_use_metric_counts[].metric" prometheus-metrics.json | sort > used_metrics.txt
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

# Delete unused metrics
curl -X POST -g 'http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total'

n=1
for i in $(cat unused_metrics.txt); do
echo "$((n++)) $i"
curl -X POST -g "http://10.0.0.200/prometheus/api/v1/admin/tsdb/delete_series?match[]=$i"
done

curl -X POST http://10.0.0.200/prometheus/api/v1/admin/tsdb/clean_tombstones

HOT

2026-05-20T21:59:52Z

Costa: Created page with "Helpdesk *6910 HOT Net 0535003000"

Helpdesk
*6910

HOT Net
0535003000

Main Page

2026-05-20T21:58:37Z

Costa:

Admin:tostertoster
=== [[Wiki Formatting]] ===

=== Kubernetes ===
* [[VirtualBox management]]
* [[Enforced pod delete]]
* [[Enforced stuck namespace delete]]
* [[New cluster deployment]]
* [[A script to list all the K8s SVC DNS records]]
* [[Log level setup]]
* [[Edit docker image]]
* [[Reset Kubernetes Certificate]]
* [[Reset kube config]]
* [[Move images to local registry]]
* [[Some pods log level setup]]

=== Zoneminder ===
* [[Camera list]]

=== Databases ===
* [[InfluxDB]]
* [[Prometheus TSDB]]

=== [[Linux]] ===

=== Kafka ===
* [[How to change the number of replicas of a Kafka topic]]

=== [[Home Assistant]] ===

=== QNAP ===
* [[snmpd restart]]
* [https://laim.scot/blog/mediawiki-qnap-docker Configure MediaWiki on QNAP with Docker]

=== [[SIM cards]] ===

=== [[Git]] ===

=== Windows ===
* [[No password login]]
* [[Disable no password login]]
* [[How to Disable Specific Windows Key Shortcut in Windows]]
* [[Allow Hibernate]]

=== [[HOT]] ===

Main Page

2026-05-20T21:58:08Z

Costa:

Linux

2026-03-25T08:23:55Z

Costa:

;Copy directories without content
<pre>
rsync -av -f"+ */" -f"- *" "$source" "$target"
</pre>
;Find files
find /path/to/dir -type f -name "*" -newermt 2013-02-07 ! -newermt 2013-02-08
find $HOME/projects -type f -name "*.py" -newermt 2013-02-07 ! -newermt 2013-02-08 -print
find $HOME/projects -type f -name "*.py" -newermt 2013-02-07 ! -newermt 2013-02-08 -ls
;Delete Files older Than
<pre>
find /var/log -name "*.log" -type f -mtime +30 -delete
find /var/log -type d -mtime +30 -exec rm -rf {} \;
</pre>
;How to print a file, excluding comments and blank lines, using grep
<pre>grep -v '^$\|^#\|^\s*\#' filename | grep -v "^[[:space:]]*$" | more
grep -v "^[[:space:]]*$\|^ *#" filename
</pre>
;bash operations with file with spaces in name
IFS=$(echo -en "\n\b"); for i in $(ls -d */ | cut -f1 -d'/'); do echo $i; done
IFS=$(echo -en "\n\b"); for i in $(ls -d */ | cut -f1 -d'/'); do echo "$i;"| tr -d '\r\n'; find $i -type f | wc -l; done
;ssh automation
ssh -i /usr/local/sbin/id_rsa -oStrictHostKeyChecking=no ansible@10.0.0.26 'upsc qnapups'
-i RSA key, -o add to known host automatically
; ls with full path
ls -dl $PWD/*

;Set date of directories by latest file inside
IFS=$(echo -en "\n\b"); for d in */ ; do T=`ls -alt --time-style="+%Y%m%d0101.10" $d | tail -1 | awk '{print $6}'`; touch -t $T $d; done

;Частотный анализ букв в именах файлов
ls | awk '{for (i=1 ; i<=NF ; i++) array[$i]++ } END{ for (char in array) print char,array[char]}' FS="" | sort -k2 -n

;Find and replace characters in file name
for file in `IFS=$(echo -en "\n\b"); find . -name "*[+]*" `; do mv -v $file $(echo $file | sed -e 's/+//g'); done

;Rename bulk of files by template
for file in *_AV1.mkv; do mv "$file" "${file%_AV1.mkv}.av1"; done

;[[Audiofile operations]]
;[[Photo file operations]]
;[[LVM operations]]
;[[SSL Certificate with SAN]]
;[[SSL Certificate signed by your own CA]]
;[[SD card partition recovery]]
;[[How to recreate a wiped /boot filesystem in Ubuntu]]

Some pods log level setup

2026-02-13T11:42:31Z

Costa:

kubernetes-dashboard loglevel
containers:
- args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
- --v=4

dashboard-metrics-scraper loglevel
spec:
template:
spec:
containers:
- name: dashboard-metrics-scraper
args:
- --log-level=debug

calico-node loglevel
containers:
- env:
- name: FELIX_LOGSEVERITYSCREEN
value: "Debug" # Change "Info" to "Debug", "Warning", etc.
name: calico-node

prometheus pod loglevel
containers:
- name: prometheus
image: prom/prometheus:latest
args:
- "--config.file=/etc/prometheus/prometheus.yml"
- "--storage.path=/var/lib/prometheus"
- "--log.level=debug" # Add this argument

influxdb pod loglevel
env:
- name: INFLUXD_LOG_LEVEL
value: debug

Some pods log level setup

2026-02-13T11:36:54Z

Costa:

Some pods log level setup

2026-02-13T11:01:04Z

Costa:

Some pods log level setup

2026-02-13T10:52:15Z

Costa: Created page with "kubernetes-dashboard loglevel containers: - args: - --auto-generate-certificates - --namespace=kubernetes-dashboard - --v=4 dashboard-metrics-scraper loglevel spec: template: spec: containers: - name: dashboard-metrics-scraper args: - --log-level=debug"

Main Page

2026-02-13T10:49:13Z

Costa: /* Kubernetes */

Enforced stuck namespace delete

2025-10-29T23:26:32Z

Costa: Created page with " kubectl get ns sas-vault -ojson |jq '.spec.finalizers = []' | kubectl replace --raw "/api/v1/namespaces/sas-vault/finalize" -f -"

kubectl get ns sas-vault -ojson |jq '.spec.finalizers = []' | kubectl replace --raw "/api/v1/namespaces/sas-vault/finalize" -f -

Main Page

2025-10-29T23:25:06Z

Costa: /* Kubernetes */

Admin:tostertoster
=== [[Wiki Formatting]] ===

=== Kubernetes ===
* [[VirtualBox management]]
* [[Enforced pod delete]]
* [[Enforced stuck namespace delete]]
* [[New cluster deployment]]
* [[A script to list all the K8s SVC DNS records]]
* [[Log level setup]]
* [[Edit docker image]]
* [[Reset Kubernetes Certificate]]
* [[Reset kube config]]
* [[Move images to local registry]]

=== Zoneminder ===
* [[Camera list]]

=== Databases ===
* [[InfluxDB]]
* [[Prometheus TSDB]]

=== [[Linux]] ===

=== Kafka ===
* [[How to change the number of replicas of a Kafka topic]]

=== [[Home Assistant]] ===

=== QNAP ===
* [[snmpd restart]]
* [https://laim.scot/blog/mediawiki-qnap-docker Configure MediaWiki on QNAP with Docker]

=== [[SIM cards]] ===

=== [[Git]] ===

=== Windows ===
* [[No password login]]
* [[Disable no password login]]
* [[How to Disable Specific Windows Key Shortcut in Windows]]
* [[Allow Hibernate]]

Enforced namespace delete

2025-10-29T23:23:39Z

Costa: Created page with " kubectl get ns sas-vault -ojson |jq '.spec.finalizers = []' | kubectl replace --raw "/api/v1/namespaces/sas-vault/finalize" -f -"

kubectl get ns sas-vault -ojson |jq '.spec.finalizers = []' | kubectl replace --raw "/api/v1/namespaces/sas-vault/finalize" -f -

Main Page

2025-10-29T23:21:40Z

Costa: /* Kubernetes */

Admin:tostertoster
=== [[Wiki Formatting]] ===

=== Kubernetes ===
* [[VirtualBox management]]
* [[Enforced pod delete]]
* [[Enforced namespace delete]]
* [[New cluster deployment]]
* [[A script to list all the K8s SVC DNS records]]
* [[Log level setup]]
* [[Edit docker image]]
* [[Reset Kubernetes Certificate]]
* [[Reset kube config]]
* [[Move images to local registry]]

=== Zoneminder ===
* [[Camera list]]

=== Databases ===
* [[InfluxDB]]
* [[Prometheus TSDB]]

=== [[Linux]] ===

=== Kafka ===
* [[How to change the number of replicas of a Kafka topic]]

=== [[Home Assistant]] ===

=== QNAP ===
* [[snmpd restart]]
* [https://laim.scot/blog/mediawiki-qnap-docker Configure MediaWiki on QNAP with Docker]

=== [[SIM cards]] ===

=== [[Git]] ===

=== Windows ===
* [[No password login]]
* [[Disable no password login]]
* [[How to Disable Specific Windows Key Shortcut in Windows]]
* [[Allow Hibernate]]

Move images to local registry

2025-10-16T22:29:15Z

Costa: Created page with " docker pull <registry>/<image_name>:<tag> docker tag <source_image>:<source_tag> <target_registry>/<target_image_name>:<target_tag> docker push <registry>/<image_name>:<tag>"

docker pull <registry>/<image_name>:<tag>

docker tag <source_image>:<source_tag> <target_registry>/<target_image_name>:<target_tag>

docker push <registry>/<image_name>:<tag>

Main Page

2025-10-16T22:27:32Z

Costa: /* Kubernetes */

Admin:tostertoster
=== [[Wiki Formatting]] ===

=== Kubernetes ===
* [[VirtualBox management]]
* [[Enforced pod delete]]
* [[New cluster deployment]]
* [[A script to list all the K8s SVC DNS records]]
* [[Log level setup]]
* [[Edit docker image]]
* [[Reset Kubernetes Certificate]]
* [[Reset kube config]]
* [[Move images to local registry]]

=== Zoneminder ===
* [[Camera list]]

=== Databases ===
* [[InfluxDB]]
* [[Prometheus TSDB]]

=== [[Linux]] ===

=== Kafka ===
* [[How to change the number of replicas of a Kafka topic]]

=== [[Home Assistant]] ===

=== QNAP ===
* [[snmpd restart]]
* [https://laim.scot/blog/mediawiki-qnap-docker Configure MediaWiki on QNAP with Docker]

=== [[SIM cards]] ===

=== [[Git]] ===

=== Windows ===
* [[No password login]]
* [[Disable no password login]]
* [[How to Disable Specific Windows Key Shortcut in Windows]]
* [[Allow Hibernate]]

How to recreate a wiped /boot filesystem in Ubuntu

2025-09-10T13:28:47Z

Costa: Created page with "If you have a working system, you can just skip part 1 to 5. Boot up a Ubuntu live-cd macthing the version you are using. Mount your normal system partition. X is the drive letter. Y is the partition number: sudo mount /dev/sdXY /mnt Only if you have a separate boot partition (where sdYY is the /boot partition designation): sudo mount /dev/sdYY /mnt/boot Mount the critical virtual filesystems. for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; don..."

If you have a working system, you can just skip part 1 to 5.

Boot up a Ubuntu live-cd macthing the version you are using.

Mount your normal system partition. X is the drive letter. Y is the partition number:
sudo mount /dev/sdXY /mnt

Only if you have a separate boot partition (where sdYY is the /boot partition designation):
sudo mount /dev/sdYY /mnt/boot

Mount the critical virtual filesystems.
for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done

Chroot into your normal system device:
sudo chroot /mnt

Reinstall GRUB 2 (substitute the correct device with sda, sdb, etc. Do not specify a partition number):
grub-install --recheck /dev/sdX

Install ubuntu kernel (Internet is required)
apt-get install --reinstall linux-image-$(uname -r)

Recreate the GRUB 2 menu file (grub.cfg)
update-grub

Exit chroot:
CTRL-D on keyboard
sudo reboot

Linux

2025-09-10T13:27:15Z

Costa:

;Copy directories without content
<pre>
rsync -av -f"+ */" -f"- *" "$source" "$target"
</pre>
;Find files
find /path/to/dir -type f -name "*" -newermt 2013-02-07 ! -newermt 2013-02-08
find $HOME/projects -type f -name "*.py" -newermt 2013-02-07 ! -newermt 2013-02-08 -print
find $HOME/projects -type f -name "*.py" -newermt 2013-02-07 ! -newermt 2013-02-08 -ls
;Delete Files older Than
<pre>
find /var/log -name "*.log" -type f -mtime +30 -delete
find /var/log -type d -mtime +30 -exec rm -rf {} \;
</pre>
;How to print a file, excluding comments and blank lines, using grep
<pre>grep -v '^$\|^#\|^\s*\#' filename | grep -v "^[[:space:]]*$" | more
grep -v "^[[:space:]]*$\|^ *#" filename
</pre>
;bash operations with file with spaces in name
IFS=$(echo -en "\n\b"); for i in $(ls -d */ | cut -f1 -d'/'); do echo $i; done
IFS=$(echo -en "\n\b"); for i in $(ls -d */ | cut -f1 -d'/'); do echo "$i;"| tr -d '\r\n'; find $i -type f | wc -l; done
;ssh automation
ssh -i /usr/local/sbin/id_rsa -oStrictHostKeyChecking=no ansible@10.0.0.26 'upsc qnapups'
-i RSA key, -o add to known host automatically
; ls with full path
ls -dl $PWD/*

;Set date of directories by latest file inside
IFS=$(echo -en "\n\b"); for d in */ ; do T=`ls -alt --time-style="+%Y%m%d0101.10" $d | tail -1 | awk '{print $6}'`; touch -t $T $d; done

;Частотный анализ букв в именах файлов
ls | awk '{for (i=1 ; i<=NF ; i++) array[$i]++ } END{ for (char in array) print char,array[char]}' FS="" | sort -k2 -n

;Find and replace characters in file name
for file in `IFS=$(echo -en "\n\b"); find . -name "*[+]*" `; do mv -v $file $(echo $file | sed -e 's/+//g'); done

;[[Audiofile operations]]
;[[Photo file operations]]
;[[LVM operations]]
;[[SSL Certificate with SAN]]
;[[SSL Certificate signed by your own CA]]
;[[SD card partition recovery]]
;[[How to recreate a wiped /boot filesystem in Ubuntu]]

Reset kube config

2025-09-08T14:40:04Z

Costa: Created page with " mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config"

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

Main Page

2025-09-08T14:39:40Z

Costa: /* Kubernetes */

Admin:tostertoster
=== [[Wiki Formatting]] ===

=== Kubernetes ===
* [[VirtualBox management]]
* [[Enforced pod delete]]
* [[New cluster deployment]]
* [[A script to list all the K8s SVC DNS records]]
* [[Log level setup]]
* [[Edit docker image]]
* [[Reset Kubernetes Certificate]]
* [[Reset kube config]]

=== Zoneminder ===
* [[Camera list]]

=== Databases ===
* [[InfluxDB]]
* [[Prometheus TSDB]]

=== [[Linux]] ===

=== Kafka ===
* [[How to change the number of replicas of a Kafka topic]]

=== [[Home Assistant]] ===

=== QNAP ===
* [[snmpd restart]]
* [https://laim.scot/blog/mediawiki-qnap-docker Configure MediaWiki on QNAP with Docker]

=== [[SIM cards]] ===

=== [[Git]] ===

=== Windows ===
* [[No password login]]
* [[Disable no password login]]
* [[How to Disable Specific Windows Key Shortcut in Windows]]
* [[Allow Hibernate]]

New cluster deployment

2025-09-08T06:10:30Z

Costa:

;Kubespray

[https://github.com/kubernetes-sigs/kubespray Github Kubespray]

[https://schoolofdevops.github.io/ultimate-kubernetes-bootcamp/cluster_setup_kubespray/ High Available Kubernetes Cluster Setup using Kubespray]

[https://dev.to/admantium/kubernetes-installation-tutorial-kubespray-46ek Kubernetes Installation Tutorial: Kubespray]

;No Kubernetes config

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

;Ansible sudo

$ vim group_vars/all/all.yaml
ansible_connection: ssh
ansible_ssh_user: rafael
ansible_ssh_pass: password123
ansible_become_pass: password123

;Kubespray reset

ansible-playbook -i inventory/remko/hosts.yaml reset.yml --become --become-user=root
ansible-playbook -i inventory/remko/hosts.yaml cluster.yml --become --become-user=root

; Bypassing authentication for the local Kubernetes Cluster Dashboard

https://medium.com/@tejaswi.goudru/disable-authentication-https-in-kubernetes-dashboard-2fada478ce91

;How To Access Kubernetes Dashboard Externally

https://www.thegeekdiary.com/how-to-access-kubernetes-dashboard-externally/

;How to install Prometheus Node Exporter on Ubuntu 20.04

https://ourcodeworld.com/articles/read/1686/how-to-install-prometheus-node-exporter-on-ubuntu-2004

; Prometheus storage size management

https://prometheus.io/docs/prometheus/latest/storage/

;Set up and run Filebeat

https://www.elastic.co/guide/en/beats/filebeat/7.17/setup-repositories.html

;Prevent from filebeat to logging to /var/messages

https://discuss.elastic.co/t/prevent-from-filebeat-to-logging-to-var-messages/223773

;Docker flooding syslog with run-docker-runtime logs

https://stackoverflow.com/questions/63622619/docker-flooding-syslog-with-run-docker-runtime-logs

; Insecure local registry
..inventory/my-cluster/group_vars/all/containerd.yml

containerd_insecure_registries:
# "localhost": "http://127.0.0.1"
# "172.19.16.11:5000": "http://172.19.16.11:5000"
"10.0.0.26:49154": "http://10.0.0.26:49154"

;Edit docker image

https://phoenixnap.com/kb/how-to-commit-changes-to-docker-image

;Docker crontab

https://github.com/willfarrell/docker-crontab

File:DisabledHotkeys.png

2025-09-04T10:53:57Z

Costa: Costa uploaded a new version of File:DisabledHotkeys.png

File:DisabledHotkeys.png

2025-09-04T10:45:37Z

Costa: Costa uploaded a new version of File:DisabledHotkeys.png

SIM cards

2025-09-04T10:37:18Z

Costa:

* [https://www.youtube.com/watch?v=jpcmkYlnh2g Golan Telecom APN setting]
* [https://www.al-galgalim.co.il/catalog.php?op=cat&id=439 SIM for cars]

Main Page

2025-09-04T10:35:41Z

Costa: /* QNAP */

Admin:tostertoster
=== [[Wiki Formatting]] ===

=== Kubernetes ===
* [[VirtualBox management]]
* [[Enforced pod delete]]
* [[New cluster deployment]]
* [[A script to list all the K8s SVC DNS records]]
* [[Log level setup]]
* [[Edit docker image]]
* [[Reset Kubernetes Certificate]]

=== Zoneminder ===
* [[Camera list]]

=== Databases ===
* [[InfluxDB]]
* [[Prometheus TSDB]]

=== [[Linux]] ===

=== Kafka ===
* [[How to change the number of replicas of a Kafka topic]]

=== [[Home Assistant]] ===

=== QNAP ===
* [[snmpd restart]]
* [https://laim.scot/blog/mediawiki-qnap-docker Configure MediaWiki on QNAP with Docker]

=== [[SIM cards]] ===

=== [[Git]] ===

=== Windows ===
* [[No password login]]
* [[Disable no password login]]
* [[How to Disable Specific Windows Key Shortcut in Windows]]
* [[Allow Hibernate]]

File:KqMqG.png

2025-03-03T19:33:48Z

Costa:

Allow Hibernate

2025-03-03T19:27:12Z

Costa:

1. From cmd
powercfg.exe /hibernate off (as Administrator)

2. From GUI
Go to Control Panel → Hardware and Sound → Power Options (you can also type Power Options in the Windows search)
* Click on Choose what the power buttons do
* Click on Change settings that are currently unavailable
* Check this checkbox:
[[file:KqMqG.png]]