Halfface - Recent changes [en-gb]

Uto

Ekaanbj — Tue, 08 Sep 2026 18:57:01 GMT

Purifying water.

← Older revision		Revision as of 18:57, 8 September 2026
(One intermediate revision by the same user not shown)
Line 26:		Line 26:
	6 kg sand		6 kg sand
	50l aktivt kol calgi		50l aktivt kol calgi
			=hydrofor=
			Gävle Galvan AB
			h150
			Maj 2003

	=Vänsviken Vägsamfällighet=		=Vänsviken Vägsamfällighet=
	Vänsviken 13		Vänsviken 13
Line 94:		Line 99:
	=eko-matic=		=eko-matic=
	http://www.konva-center.com/		http://www.konva-center.com/
	By saw dust		Buy saw dust
	Finvids väg 2		Finvids väg 2
	UPPLANDS VÄSBY		UPPLANDS VÄSBY

Openstack

Ekaanbj — Thu, 03 Sep 2026 13:45:29 GMT

listerners and l7policy

@@ Line 164: / Line 164: @@
 Maintenance mode
   openstack loadbalancer l7policy set --enable cdae695d-04fe-41e7-b927-88b5f32b9ed8
 =view limits=

Megacli

Ekaanbj — Thu, 03 Sep 2026 11:40:39 GMT

Replace broken disk.

← Older revision		Revision as of 11:40, 3 September 2026
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	MegaCli64 -PDList -aALL -NoLog \| grep -E 'Enclosure\|Slot\|Firmware'		MegaCli64 -PDList -aALL -NoLog \| grep -E 'Enclosure\|Slot\|Firmware'
	MegaCli64 -PDRbld -ShowProg -physdrv[252:2] -aALL -NoLog		MegaCli64 -PDRbld -ShowProg -physdrv[252:2] -aALL -NoLog
			=Follow status of rebuild(you have to figure out the number of the new disk)=
			while true ; do echo $(TZ=Europe/Stockholm date '+%F %H:%M:%S %Z') $(MegaCli64 -PDRbld -ShowProg -PhysDrv [0:8] -a0 \| grep Enclosure) ; sleep 60 ; done

	=Enclosure information.=		=Enclosure information.=
	MegaCli64 -EncInfo -aALL		MegaCli64 -EncInfo -aALL

Openshift

Ekaanbj — Fri, 28 Aug 2026 12:01:34 GMT

install rpm in toolbox

← Older revision		Revision as of 12:01, 28 August 2026
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	toolbox rm --force <container>		toolbox rm --force <container>
	==install rpm in toolbox==		==install rpm in toolbox==
			<pre>
	rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm		rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
	dnf download iotop-c		dnf download iotop-c
	rpm -i iotop-c-1.31-2.el9.x86_64.rpm		rpm -i iotop-c-1.31-2.el9.x86_64.rpm
			</pre>
	CoreOS10		CoreOS10
	<pre>		<pre>

Kvm

Ekaanbj — Fri, 28 Aug 2026 09:49:08 GMT

stop running vm:s

← Older revision		Revision as of 09:49, 28 August 2026
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	=stop running vm:s=		=stop running vm:s=
	virsh list --state-running --name \| grep -v ^$ \| while read VM ; do virsh shutdown $VM ; done		virsh list --state-running --name \| grep -v ^$ \| while read VM ; do virsh shutdown $VM ; done
			Pulling cord
			virsh destroy <vm>

	=execute command via agent=		=execute command via agent=

Openshift

Ekaanbj — Fri, 28 Aug 2026 07:29:15 GMT

NodeMemoryMajorPagesFaults

← Older revision		Revision as of 07:29, 28 August 2026
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	oc_prometheus_query 'rate(node_vmstat_pgmajfault{job="node-exporter"}[5m])' \| jq -r '.data.result[]\|[.metric.instance, .value.[1]]\|@tsv' \| sort \| column_tab		oc_prometheus_query 'rate(node_vmstat_pgmajfault{job="node-exporter"}[5m])' \| jq -r '.data.result[]\|[.metric.instance, .value.[1]]\|@tsv' \| sort \| column_tab
	# to see what is causing major		# to see what is causing major
	tput rmam ; while true ; do ps -eo pid,maj_flt,cmd --sort=-maj_flt \| cut -c -$(tput cols) \| head ; sleep 1 ; done		tput rmam ; while true ; do ps -eo pid,maj_flt,cmd --sort=-maj_flt \| cut -c -$(tput cols) \| head ; sleep 1 ; done ; tput smam
	</pre>		</pre>

Commands

Ekaanbj — Thu, 27 Aug 2026 12:38:54 GMT

tput

← Older revision		Revision as of 12:38, 27 August 2026
Line 3,397:		Line 3,397:

	=tput=		=tput=
	No line wraps		No line wraps (tput smam return to normal)
	tput rmam		tput rmam
	Line wraps		Line wraps

Openshift

Ekaanbj — Wed, 26 Aug 2026 07:28:33 GMT

load

← Older revision		Revision as of 07:28, 26 August 2026
(9 intermediate revisions by the same user not shown)
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	rpm -i iotop-c-1.31-2.el9.x86_64.rpm		rpm -i iotop-c-1.31-2.el9.x86_64.rpm
	CoreOS10		CoreOS10
	dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-10.noarch.rpm --transient --nogpgcheck		<pre>
	dnf install -y ncdu iotop --disablerepo="*" --enablerepo=baseos,epel --transient		dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-10.noarch.rpm --transient --nogpgcheck
			dnf install -y ncdu iotop --disablerepo="*" --enablerepo=baseos,epel --transient
			</pre>
			Fedora
			<pre>
			dnf install -y https://mirrors.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
			</pre>

	=oc get route -A=		=oc get route -A=
Line 1,084:		Line 1,090:
	=run oc when on node=		=run oc when on node=
	oc get pod -n openshift-monitoring --kubeconfig=/var/lib/kubelet/kubeconfig		oc get pod -n openshift-monitoring --kubeconfig=/var/lib/kubelet/kubeconfig
			=Restart etcd=
			restart etcd. Rename file. Wait for etcd to stop. Then rename back to see etcd start again.
			mv /etc/kubernetes/manifests/etcd-pod.yaml{,.bak}

	=etcdctl=		=etcdctl=
Line 1,369:		Line 1,378:
	==load==		==load==
	Load 1 graph		Load 1 graph
	instance:node_load1_per_cpu:ratio{job="node-exporter~~", cluster="~~"} != 0		instance:node_load1_per_cpu:ratio{job="node-exporter"} != 0

	==usage for pvc==		==usage for pvc==
	kubelet_volume_stats_used_bytes		kubelet_volume_stats_used_bytes
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	aws --endpoint-url "https://localhost:10443" --no-verify-ssl s3		aws --endpoint-url "https://localhost:10443" --no-verify-ssl s3
	=NodeMemoryMajorPagesFaults=		=NodeMemoryMajorPagesFaults=
	~~Metrics value to look for to get~~ "~~problem~~" ~~node~~		<pre>
	rate(node_vmstat_pgmajfault{job="node-exporter"}[5m])		# NodeMemoryMajorPagesFaults
	~~Figure out which node creates iowait~~.		rate(node_vmstat_pgmajfault{job="node-exporter"}[5m])
	~~create toolbox and run iotop~~ to ~~figure out which~~ pid ~~writes to disk.~~		oc_prometheus_query 'rate(node_vmstat_pgmajfault{job="node-exporter"}[5m])' \| jq -r '.data.result[]\|[.metric.instance, .value.[1]]\|@tsv' \| sort \| column_tab
			# to see what is causing major
			tput rmam ; while true ; do ps -eo pid,maj_flt,cmd --sort=-maj_flt \| cut -c -$(tput cols) \| head ; sleep 1 ; done
			</pre>

Commands

Ekaanbj — Mon, 24 Aug 2026 08:00:47 GMT

iotop

← Older revision		Revision as of 08:00, 24 August 2026
Line 1,325:		Line 1,325:
	iotop with dates for output to logfile.		iotop with dates for output to logfile.
	DATE=$(date '+%Y-%m-%d %H:%M:%S %Z') ; sudo iotop -kbon1 \| head -2 \| while read i ; do echo $DATE $i ; done		DATE=$(date '+%Y-%m-%d %H:%M:%S %Z') ; sudo iotop -kbon1 \| head -2 \| while read i ; do echo $DATE $i ; done
			iotop -o -d 1

	=ip=		=ip=

Openshift

Ekaanbj — Mon, 24 Aug 2026 07:11:08 GMT

install rpm in toolbox

← Older revision		Revision as of 07:11, 24 August 2026
(4 intermediate revisions by the same user not shown)
Line 344:		Line 344:
	==Connect to node==		==Connect to node==
	oc debug node/<node>		oc debug node/<node>
			chroot /host
	export SHELL=/bin/bash		export SHELL=/bin/bash

	==Create container==		==Create container==
	toolbox create		toolbox create
Line 351:		Line 353:
	==Remove container==		==Remove container==
	toolbox rm --force <container>		toolbox rm --force <container>
			==install rpm in toolbox==
			rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
			dnf download iotop-c
			rpm -i iotop-c-1.31-2.el9.x86_64.rpm
			CoreOS10
			dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-10.noarch.rpm --transient --nogpgcheck
			dnf install -y ncdu iotop --disablerepo="*" --enablerepo=baseos,epel --transient

	=oc get route -A=		=oc get route -A=
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	crictl exec -it <container-id> etcdctl endpoint status --write-out=table		crictl exec -it <container-id> etcdctl endpoint status --write-out=table
	=etcd defrag=		=etcd defrag=
	# Does this exist		<pre>
	oc get cm etcd-disable-defrag -n openshift-etcd-operator		# Does this exist
	# Which etcd member is master. Run defrag on master last.		oc get cm etcd-disable-defrag -n openshift-etcd-operator
	oc_etcd_leader		# Which etcd member is master. Run defrag on master last.
	# Defrag		oc_etcd_leader
	unset ETCDCTL_ENDPOINTS && etcdctl --command-timeout=30s --endpoints=https://localhost:2379 defrag		# Defrag
	# Size on disk		unset ETCDCTL_ENDPOINTS && etcdctl --command-timeout=30s --endpoints=https://localhost:2379 defrag
	oc_prometheus_query etcd_mvcc_db_total_size_in_use_in_bytes \| jq -r '.data.result[]\|[.metric.pod,.value[1]]\|@tsv' \| sort		# Size on disk
	# Actual size		oc_prometheus_query etcd_mvcc_db_total_size_in_use_in_bytes \| jq -r '.data.result[]\|[.metric.pod,.value[1]]\|@tsv' \| sort
	oc_prometheus_query etcd_mvcc_db_total_size_in_bytes \| jq -r '.data.result[]\|[.metric.pod,.value[1]]\|@tsv' \| sort		# Actual size
	# able to save.		oc_prometheus_query etcd_mvcc_db_total_size_in_bytes \| jq -r '.data.result[]\|[.metric.pod,.value[1]]\|@tsv' \| sort
	oc_prometheus_query '(etcd_mvcc_db_total_size_in_bytes - etcd_mvcc_db_total_size_in_use_in_bytes)/1024/1024' \| jq -r '.data.result[]\|[.metric.pod,.value[1]]\|@tsv' \| sort		# able to save.
			oc_prometheus_query '(etcd_mvcc_db_total_size_in_bytes - etcd_mvcc_db_total_size_in_use_in_bytes)/1024/1024' \| jq -r '.data.result[]\|[.metric.pod,.value[1]]\|@tsv' \| sort
			</pre>

	=etcd compactation=		=etcd compactation=
	while read i ; do echo '#' $i ; oc logs -n openshift-etcd $i --tail=20 \| grep compaction \| tail -1; oc logs -n openshift-etcd $i --tail=-1 \| grep defrag \| tail -1 ; done <<< "$(oc get pods -n openshift-etcd -l etcd -o name)"		while read i ; do echo '#' $i ; oc logs -n openshift-etcd $i --tail=20 \| grep compaction \| tail -1; oc logs -n openshift-etcd $i --tail=-1 \| grep defrag \| tail -1 ; done <<< "$(oc get pods -n openshift-etcd -l etcd -o name)"

Icinga2

Ekaanbj — Thu, 20 Aug 2026 07:35:50 GMT

nagios client config

← Older revision		Revision as of 07:35, 20 August 2026
Line 65:		Line 65:
	/etc/nagios/nrpe.cfg		/etc/nagios/nrpe.cfg
	/etc/nagios/nrpe.d/binero.cfg		/etc/nagios/nrpe.d/binero.cfg
			==What does service check contain==
			grep -r "zeek-last-block" /var/lib/icinga2/api/packages/director/

Commands

Ekaanbj — Tue, 18 Aug 2026 13:18:38 GMT

flock

← Older revision		Revision as of 13:18, 18 August 2026
(One intermediate revision by the same user not shown)
Line 1,006:		Line 1,006:
	=flock=		=flock=
	used to use cript that only used 1 time concurrently.		used to use cript that only used 1 time concurrently.
	flock		crontab -l
			* * * * * /usr/bin/flock -n /tmp/pg_processlist_active_log.lock /home/abjorklund_sysadmin/bin/pg_processlist_active_log

	=fmt=		=fmt=
Line 1,760:		Line 1,761:
	MP4Box -add file1.mp4 -add file2.mp4 output.mp4		MP4Box -add file1.mp4 -add file2.mp4 output.mp4
	=mpv=		=mpv=
	Video player. Enable hardware ~~accelleration~~.		==Video player. Enable hardware acceleration.==
	# Install packages.		# Install packages.
	dnf install intel-media-driver libva libva-utils gstreamer1-vaapi ffmpeg intel-gpu-tools mesa-dri-drivers mpv		dnf install intel-media-driver libva libva-utils gstreamer1-vaapi ffmpeg intel-gpu-tools mesa-dri-drivers mpv
Line 1,771:		Line 1,772:
	# Look at browser.		# Look at browser.
	chrome://gpu/		chrome://gpu/
			==view stream==
			mpv -fs --no-cache --untimed --no-demuxer-thread https://halfface.se/uto

	=mpstat=		=mpstat=

Openstack

Ekaanbj — Wed, 12 Aug 2026 11:12:52 GMT

create snapshot

← Older revision		Revision as of 11:12, 12 August 2026
Line 254:		Line 254:
	openstack volume backup list		openstack volume backup list
	=create snapshot=		=create snapshot=
	SERVER=<server> openstack server image create --name "backup-${SERVER}-$(date_file)" ${SERVER}		export SERVER=<server> ; openstack server image create --name "backup-${SERVER}-$(date_file)" ${SERVER}

	=volume snapshot=		=volume snapshot=
	openstack volume snapshot list		openstack volume snapshot list

Openshift

Ekaanbj — Tue, 11 Aug 2026 15:23:47 GMT

work with oc without login

← Older revision		Revision as of 15:23, 11 August 2026
(4 intermediate revisions by the same user not shown)
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	==crictl logs==		==crictl logs==
	crictl logs		crictl logs
			==clean disk==
			# Remove containers that are exited
			crictl rm $(crictl ps --state Exited -q)
			# remove NotReady pods
			crictl rmp $(crictl pods -q -s NotReady)
			# remove all images
			crictl rmi -q

	=nsenter=		=nsenter=
Line 334:		Line 341:
	ssh $node		ssh $node
	toolbox		toolbox
	=rm toolbox=		=toolbox=
			==Connect to node==
			oc debug node/<node>
			export SHELL=/bin/bash
			==Create container==
			toolbox create
			==Enter toolbox==
			toolbox enter
			==Remove container==
	toolbox rm --force <container>		toolbox rm --force <container>

Line 1,048:		Line 1,063:
	=work with oc without login=		=work with oc without login=
	export KUBECONFIG=/var/lib/kubelet/kubeconfig		export KUBECONFIG=/var/lib/kubelet/kubeconfig
			export KUBECONFIG=/etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/localhost-recovery.kubeconfig
	if on bootstrap node.		if on bootstrap node.
	export KUBECONFIG=/etc/kubernetes/kubeconfig		export KUBECONFIG=/etc/kubernetes/kubeconfig
Line 2,948:		Line 2,964:
	export AWS_SECRET_ACCESS_KEY=$(oc get secret noobaa-admin -n openshift-storage -o json \| jq -r '.data.AWS_SECRET_ACCESS_KEY\|@base64d')		export AWS_SECRET_ACCESS_KEY=$(oc get secret noobaa-admin -n openshift-storage -o json \| jq -r '.data.AWS_SECRET_ACCESS_KEY\|@base64d')
	aws --endpoint-url "https://localhost:10443" --no-verify-ssl s3		aws --endpoint-url "https://localhost:10443" --no-verify-ssl s3
			=NodeMemoryMajorPagesFaults=
			Metrics value to look for to get "problem" node
			rate(node_vmstat_pgmajfault{job="node-exporter"}[5m])
			Figure out which node creates iowait.
			create toolbox and run iotop to figure out which pid writes to disk.