Costa's Wiki - User contributions [en]

LVM operations

2025-08-28T15:21:44Z

10.0.0.200:

== create LV ==
1. create disk partition (fdisk)
2. pvcreate /dev/sdb1
3. lvmdiskscan , pvdisplay , pvscan(to check)
4. vgcreate vg_newlvm /dev/sdb1
vgcreate vg_newlvm /dev/sdb1 /dev/sdc1
5. lvcreate --name centos7_newvol -l 100%FREE vg_newlvm
lvcreate -L 15G vg_newlvm
lvcreate -l 50%VG -n centos7_newvol vg_newlvm
6. lvdisplay (to check)
7. mkfs.ext4 /dev/vg_newlvm/centos7_newvol

==resize LV ==

1. Identify the Volume Group
vgs
2. Extend the Volume Group
vgextend myvolume /dev/sda2
3. Check
vgs , vgdisplay
4. Extend the Logical Volume
lvextend -l +100%FREE /dev/myvg/myvolume
Note: You can also extend the file system size using single lvextnd command by adding -r at end, example is shown below
lvextend -l +100%FREE /dev/myvg/myvolume -r
5. Extend the filesystem
xfs_growfs /dev/myvg/myvolume

==disable/delete LV ==
1. Delete the entry of the mount point from the /etc/fstab :
# cat /etc/fstab
...
/dev/mapper/datavg-testlv /data01 ext4 defaults 0 0
...
2. Unmount the mount point :
# umount /data01

3. Disable lvm :
# lvchange -an /dev/datavg/testlv

4. Delete lvm volume :
# lvremove /dev/datavg/testlv

5. Disable volume group :
# vgchange -an datavg

6. Delete volume group :
# vgremove datavg

7. Delete physical Volumes being used for the volume group “datavg” :
# pvremove /dev/sdb /dev/sdc

==mount LVM from external disk ==

Make sure lvm2 is installed:

$ sudo yum install lvm2
Load the necessary module(s) as root:

$ sudo modprobe dm-mod
Scan your system for LVM volumes and identify in the output the volume group name that has your Fedora volume (mine proved to be VolGroup00):

$ sudo vgscan
Activate the volume:

$ sudo vgchange -ay VolGroup00
Find the logical volume that has your Fedora root filesystem (mine proved to be LogVol00):

$ sudo lvs
Create a mount point for that volume:

$ sudo mkdir /mnt/fcroot
Mount it:

$ sudo mount /dev/VolGroup00/LogVol00 /mnt/fcroot -o ro,user
You're done, navigate to /mnt/fcroot and copy the files and paste somewhere else.

Note: In case of bad sectors on the disk, one can prevent journaling with the option noload.

How to change the number of replicas of a Kafka topic

2025-08-05T18:41:17Z

10.0.0.200: /* 1. Specify the extra replicas in a custom reassignment json file */

===1. Specify the extra replicas in a custom reassignment json file===
For example, you could create ''increase-replication-factor.json'' and put this content in it:

{"version":1,
"partitions":[
{"topic":"telegraf","partition":0,"replicas":[0,1,2]},
{"topic":"telegraf","partition":1,"replicas":[1,2,0]},
{"topic":"telegraf","partition":2,"replicas":[2,0,1]}
]}

===2. Use the file with the --execute option of the kafka-reassign-partitions tool===
[or kafka-reassign-partitions.sh - depending on the kafka package]

For example:

$ ./kafka-reassign-partitions.sh --bootstrap-server kafka.kafka:9092 --reassignment-json-file increase-replication-factor.json --execute

===3. Verify the replication factor with the kafka-topics tool===
[or kafka-topics.sh - depending on the kafka package]

bash-5.0# ./kafka-topics.sh --bootstrap-server kafka.kafka:9092 --topic telegraf --describe
Topic: telegraf TopicId: O4smIJNBRyqmm0z2CwunNA PartitionCount: 3 ReplicationFactor: 1 Configs:
cleanup.policy=delete,segment.bytes=5242880,retention.ms=43200000,message.timestamp.type=LogAppendTime,retention.bytes=-1,delete.retention.ms=43200000
Topic: telegraf Partition: 0 Leader: 0 Replicas: 0,1 Isr: 0 Adding Replicas: 1 Removing Replicas:
Topic: telegraf Partition: 1 Leader: 1 Replicas: 1,2 Isr: 1 Adding Replicas: 2 Removing Replicas:
Topic: telegraf Partition: 2 Leader: 2 Replicas: 2,0 Isr: 2 Adding Replicas: 0 Removing Replicas:
bash-5.0# ./kafka-topics.sh --bootstrap-server kafka.kafka:9092 --topic telegraf --describe
Topic: telegraf TopicId: O4smIJNBRyqmm0z2CwunNA PartitionCount: 3 ReplicationFactor: 2 Configs:
cleanup.policy=delete,segment.bytes=5242880,retention.ms=43200000,message.timestamp.type=LogAppendTime,retention.bytes=-1,delete.retention.ms=43200000
Topic: telegraf Partition: 0 Leader: 0 Replicas: 0,1 Isr: 0,1
Topic: telegraf Partition: 1 Leader: 1 Replicas: 1,2 Isr: 1,2
Topic: telegraf Partition: 2 Leader: 2 Replicas: 2,0 Isr: 2,0
bash-5.0#

See also: [https://kafka.apache.org/documentation/#basic_ops_increase_replication_factor the part of the official documentation that describes how to increase the replication factor].

Reset Kubernetes Certificate

2025-06-06T20:13:08Z

10.0.0.200:

sudo kubeadm certs check-expiration
sudo kubeadm init phase kubelet-finalize all
sudo kubeadm certs renew all
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

Choosing certificate validity period

kubeadm allows you to choose the validity period of CA and leaf certificates. That can be done by using the certificateValidityPeriod and caCertificateValidityPeriod fields of the kubeadm configuration:

apiVersion: kubeadm.k8s.io/v1beta4

kind: ClusterConfiguration

certificateValidityPeriod: 8760h # Default: 365 days × 24 hours = 1 year

caCertificateValidityPeriod: 87600h # Default: 365 days × 24 hours * 10 = 10 years

The values of the fields follow the accepted format for Go's time.Duration values, with the longest supported unit being h (hours).

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-certs/

Reset Kubernetes Certificate

2025-06-06T20:06:08Z

10.0.0.200: Created page with " sudo kubeadm certs check-expiration sudo kubeadm init phase kubelet-finalize all sudo kubeadm certs renew all sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sud..."

Main Page

2025-06-06T20:05:40Z

10.0.0.200: /* 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]]

=== 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]]

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

=== [[Git]] ===

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

Snmpd restart

2025-05-08T17:25:08Z

10.0.0.200:

ps -T | grep snmpd
kill -9 XXXX
# kill -9 $(ps -T | grep snmpd |grep -v "grep" | awk '{print $1}')
/usr/local/bin/snmpd -c /etc/config/snmpd.conf -p 161

Main Page

2025-04-05T21:41:19Z

10.0.0.200:

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]]

=== 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]]

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

=== [[Git]] ===

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

Snmpd restart

2025-04-05T21:40:38Z

10.0.0.200: Created page with " ps -T | grep snmpd kill -9 XXXX /usr/local/bin/snmpd -c /etc/config/snmpd.conf -p 161"

ps -T | grep snmpd
kill -9 XXXX
/usr/local/bin/snmpd -c /etc/config/snmpd.conf -p 161

Main Page

2025-04-05T21:39:53Z

10.0.0.200:

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]]

=== 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]]

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

=== [[Git]] ===

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

Main Page

2025-04-05T21:39:34Z

10.0.0.200:

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]]

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

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

=== [[Linux]] ===

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

=== Home Assistant ===
* [[snmpd restart]]

=== [[QNAP]] ===

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

=== [[Git]] ===

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

Main Page

2025-04-05T21:38:41Z

10.0.0.200:

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]]

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

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

=== [[Linux]] ===

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

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

=== [[QNAP]] ===

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

=== [[Git]] ===

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

Git

2025-03-23T07:15:35Z

10.0.0.200:

git init
git remote add origin https://gitlab.com/costa6/kubespray.git
git branch -M main
git add busybox chronograf crontab dashboard dashboard.yaml elk elk-cluster grafana homeassistant influxdb jmx-exporter kafka kube-apiserver-audit.conf kubespray local-path-storage.yaml mosquitto mysql nginx prometheus prometheus_get_latest.sh telegraf test wiki
git rm --cached kubespray -f
git status
git commit -m "kubespray instance"
git push -uf origin main

Prometheus TSDB

2025-03-23T06:22:44Z

10.0.0.200:

;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
Grafana token
eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=

curl -H "Authorization: Bearer eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0="
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
curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
for i in `cat unused_metrics.txt`; do 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'

Allow Hibernate

2025-03-03T19:03:16Z

10.0.0.200: Created page with "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..."

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:

Main Page

2025-03-03T19:01:03Z

10.0.0.200: /* Windows */

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]]

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

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

=== [[Linux]] ===

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

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

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

=== [[Git]] ===

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

Prometheus TSDB

2025-01-09T14:29:28Z

10.0.0.200:

;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
Grafana token
eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=

curl -H "Authorization: Bearer eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0="
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
curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
for i in `cat unused_metrics.txt`; do 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'

Prometheus TSDB

2025-01-09T14:28:40Z

10.0.0.200:

Edit docker image

2024-08-14T18:26:17Z

10.0.0.200: Created page with " # Run an existing image docker run -dt existing_image # See that it's running docker ps # CONTAINER ID IMAGE COMMAND CREATED STATUS..."

# Run an existing image
docker run -dt existing_image

# See that it's running
docker ps
# CONTAINER ID IMAGE COMMAND CREATED STATUS
# c7e6409a22bf existing-image "R" 6 minutes ago Up 6 minutes

# Shell into it
docker exec -it c7e6409a22bf bash

# Make a new directory for demonstration purposes
# (note that this is inside the existing image)
mkdir NEWDIRECTORY

# Open another terminal tab/window, and save the running container you modified
docker commit c7e6409a22bf 10.0.0.26:49154/my-new-image:stable

# Inspect to ensure it saved correctly
docker image ls
# REPOSITORY TAG IMAGE ID CREATED SIZE
# existing-image latest a7dde5d84fe5 7 minutes ago 888MB
# my-new-image latest d57fd15d5a95 2 minutes ago 888MB

docker push 10.0.0.26:49154/my-new-image:stable

Main Page

2024-08-14T18:21:09Z

10.0.0.200: /* 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]]

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

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

=== [[Linux]] ===

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

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

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

=== [[Git]] ===

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

Prometheus TSDB

2024-07-26T21:38:16Z

10.0.0.200:

;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
Grafana token
eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=

curl -H "Authorization: Bearer eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0="
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
curl -X POST -g http://10.0.0.200:30900/api/v1/admin/tsdb/delete_series?match[]=workqueue_adds_total
for i in `cat unused_metrics.txt`; do 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'

Prometheus TSDB

2024-07-26T21:32:17Z

10.0.0.200:

Prometheus TSDB

2024-07-26T21:30:49Z

10.0.0.200:

Prometheus TSDB

2024-07-26T21:23:08Z

10.0.0.200:

Prometheus TSDB

2024-07-26T21:12:06Z

10.0.0.200:

Prometheus TSDB

2024-07-26T21:10:07Z

10.0.0.200:

;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
Grafana token
eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=

curl -H "Authorization: Bearer eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0=" http://10.0.0.200:30725/api/dashboards/home

mimirtool analyze grafana --address=http://10.0.0.200:30725 --key="eyJrIjoibzQ4R3I5Mm9FcUMwOFZPNzdpWEtnNEl5ZU1IVkYyUG4iLCJuIjoibWltaXItdG9rZW4iLCJpZCI6MX0="
mimirtool analyze prometheus --address=http://10.0.0.200:30900
jq -r ".additional_metric_counts[].metric" prometheus-metrics.json | sort > unused_metrics.txt

Prometheus TSDB

2024-07-26T20:41:11Z

10.0.0.200:

Prometheus TSDB

2024-07-26T20:38:04Z

10.0.0.200:

Git

2024-07-21T15:55:11Z

10.0.0.200: Created page with " git init git remote add origin https://gitlab.com/costa6/kubespray.git git branch -M main git add busybox chronograf crontab dashboard dashboard.yaml elk elk-cluster graf..."

git init
git remote add origin https://gitlab.com/costa6/kubespray.git
git branch -M main
git add busybox chronograf crontab dashboard dashboard.yaml elk elk-cluster grafana homeassistant influxdb kafka kube-apiserver-audit.conf kubespray local-path-storage.yaml mosquitto mysql nginx prometheus prometheus_get_latest.sh telegraf test wiki
git rm --cached kubespray -f
git status
git commit -m "kubespray instance"
git push -uf origin main

Main Page

2024-07-21T15:51:44Z

10.0.0.200:

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]]

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

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

=== [[Linux]] ===

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

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

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

=== [[Git]] ===

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

SIM cards

2024-07-18T06:56:41Z

10.0.0.200:

* [https://www.simcard.co.il/golan-telecom/ Golan Telecom APN setting]
* [https://www.al-galgalim.co.il/catalog.php?op=cat&id=439 SIM for cars]

Home Assistant

2024-07-18T06:51:36Z

10.0.0.200:

* [https://community.home-assistant.io/t/custom-component-tp-link-router-integration/638647 Custom Component TP-Link Router Integration]
* [https://github.com/tenable/upnp_info uPnP Info]

SIM cards

2024-07-18T06:50:24Z

10.0.0.200: Created page with "* [https://www.simcard.co.il/golan-telecom/ Golan Telecom APN setting]"

* [https://www.simcard.co.il/golan-telecom/ Golan Telecom APN setting]

Main Page

2024-07-18T06:49:43Z

10.0.0.200:

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]]

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

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

=== [[Linux]] ===

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

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

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

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

Home Assistant

2024-07-18T06:39:16Z

10.0.0.200:

* [https://community.home-assistant.io/t/custom-component-tp-link-router-integration/638647 Custom Component TP-Link Router Integration]

Home Assistant

2024-07-18T06:35:03Z

10.0.0.200: Created page with "* [Custom Component] TP-Link Router Integration"

* [Custom Component] TP-Link Router Integration

Main Page

2024-07-18T06:34:14Z

10.0.0.200:

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]]

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

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

=== [[Linux]] ===

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

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

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

Main Page

2024-07-18T06:33:49Z

10.0.0.200:

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]]

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

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

=== [[Linux]] ===

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

=== Home Assistant ===

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

Prometheus TSDB

2024-07-02T19:14:33Z

10.0.0.200:

Prometheus TSDB

2024-07-02T19:09:45Z

10.0.0.200:

Prometheus TSDB

2024-06-25T06:51:03Z

10.0.0.200: Created page with ";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..."

;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" ; }

Linux

2024-06-25T06:50:51Z

10.0.0.200:

;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]]

Main Page

2024-06-25T06:50:30Z

10.0.0.200: /* Databases */

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]]

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

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

=== [[Linux]] ===

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

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

SD card partition recovery

2024-06-23T19:17:36Z

10.0.0.200:

Create an image of /dev/sdb called sdb.img
dd if=/dev/sdb of=sdb.img

Mount the dd disk image

Establish sector size. Establish where the partition starts
fdisk -l sdb.img

Calculate the offset
startsector*sectorsize
63*512=32256

Mount the disk image
losetup --offset 32256 /dev/loop0 sdb.img

Fix the partition in the disk image
Use the appropriate version of fsck and switches
e.g. fsck.reiserfs --fix-fixable /dev/loop0

Mount the partition in the disk image (optional)
mount /dev/loop0 /mnt/image

Also possible as
mount -oloop,offset=32256 sdb.img /mnt/image

Restore the disk image to a new physical drive (ensure it is unused and not mounted)
Unmount the partition, if mounted
umount /mnt

Unmount the disk image
losetup -d /dev/loop0

Restore the fsck'd disk image
dd if=sdb.img of=/dev/sdb

SD card partition recovery

2024-06-23T19:14:52Z

10.0.0.200: Created page with "Create an image of /dev/sdb called sdb.img dd if=/dev/sdb of=sdb.img Mount the dd disk image Establish sector size. Establish where the partition starts fdisk -l sdb.img..."

Create an image of /dev/sdb called sdb.img
dd if=/dev/sdb of=sdb.img

Mount the dd disk image

Establish sector size. Establish where the partition starts
fdisk -l sdb.img

Calculate the offset
startsector*sectorsize
63*512=32256

Mount the disk image
losetup --offset 32256 /dev/loop0 sdb.img

Fix the partition in the disk image
Use the appropriate version of fsck and switches
e.g. fsck.reiserfs --fix-fixable /dev/loop0

Mount the partition in the disk image (optional)
mount /dev/loop0 /mnt

Restore the disk image to a new physical drive (ensure it is unused and not mounted)
Unmount the partition, if mounted
umount /mnt

Unmount the disk image
losetup -d /dev/loop0

Restore the fsck'd disk image
dd if=sdb.img of=/dev/sdb

Linux

2024-06-23T19:10:20Z

10.0.0.200:

;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

;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" ; }

;[[Audiofile operations]]
;[[Photo file operations]]
;[[LVM operations]]
;[[SSL Certificate with SAN]]
;[[SSL Certificate signed by your own CA]]
;[[SD card partition recovery]]

Linux

2024-06-22T16:19:49Z

10.0.0.200:

;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

;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" ; }

;[[Audiofile operations]]
;[[Photo file operations]]
;[[LVM operations]]
;[[SSL Certificate with SAN]]
;[[SSL Certificate signed by your own CA]]

Main Page

2024-06-09T05:42:34Z

10.0.0.200:

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]]

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

=== Databases ===
* [[InfluxDB]]

=== [[Linux]] ===

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

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

Linux

2024-05-07T18:55:40Z

10.0.0.200:

Linux

2024-05-07T18:32:23Z

10.0.0.200:

;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]]

Linux

2024-05-07T18:26:04Z

10.0.0.200:

;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

;[[Audiofile operations]]
;[[Photo file operations]]
;[[LVM operations]]
;[[SSL Certificate with SAN]]
;[[SSL Certificate signed by your own CA]]