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Petr Michalec epcim

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epcim / k8s_job_replay.sh
Last active January 7, 2020 12:14
kubernetes job
kubectl get job -n sre kibana-config -o json | jq 'del(.spec.selector)' | jq 'del(.spec.template.metadata.labels)' | kubectl replace --force -f -
@epcim
epcim / kubernetes_pods_docker_disk_usage.md
Last active January 22, 2024 03:57
docker disk space introspection kubernetes docker overlay

identify big pods/containers

investigage big files

DST=/mnt
find /var/lib -type f -size +1G -exec ls -lh {} \; | tee  $DST/bigfiles_var_lib_$(date "+%H%M").log
find /var/lib -type f -size +1G -exec ls -lh {} \; | awk '{ print $5 ": " $9 }' | sort -rh > $DST/bigfiles_var_lib_$(date "+%H%M").sorted.log

misbehave processes

@epcim
epcim / hab clustered etcd
Created September 16, 2019 08:58
etcd habitat docker-compose hab
# See more: https://gist.github.com/epcim/80d2dda18e2b3022e4ab07f161f59823
# hab clustered etcd
## compose
cat <<EOF > docker-compose.yml
version: '3'
services:
etcd1:
@epcim
epcim / wait_for_http_200.sh
Created August 26, 2019 09:53 — forked from rgl/wait_for_http_200.sh
Wait for an HTTP endpoint to return 200 OK with Bash and curl
bash -c 'while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' localhost:9000)" != "200" ]]; do sleep 5; done'
# also check https://gist.github.com/rgl/c2ba64b7e2a5a04d1eb65983995dce76
@epcim
epcim / needle.sh
Last active June 18, 2019 20:05
split needle csplit
# example usage: to split yaml with multiple documents
needle() {
SUFFIX=${1##*.}
NEEDLE=${2:----}
csplit -b "%03d.$SUFFIX" -zsf $(basename $1 .$SUFFIX) $1 /$NEEDLE/+1 {*}
}
needle vega-objects.yaml
@epcim
epcim / gitlab-get-project.py
Created May 31, 2019 13:51
gitlab python
#!/bin/env python3
import gitlab
import sys
# private token or personal token authentication
gl = gitlab.Gitlab('https://gitlab.com/', private_token='******')
if len(sys.argv) > 1:
if sys.argv[1].find("/") > 0:
@epcim
epcim / habitat_systemd.md
Last active September 16, 2019 08:56
hab habitat hab-sup deployment etcd

Simple deployment script to install habitat container with the app as systemd service.

export ALT=500 # Prefix for all the service names/ports used (apply to habitat/ inner service service)
# cleanup
systemctl stop etcd-$ALT
sleep 3
rm -f /etc/systemd/system/etcd-$ALT.service /etc/default/etcd-$ALT*
rm -rf /srv/etcd-$ALT
@epcim
epcim / debian-live.sh
Created May 13, 2019 12:51
debian livecd netboot
# Create a Custom Debian Live Environment (CD or USB)
https://willhaley.com/blog/custom-debian-live-environment/
@epcim
epcim / update from line
Created May 1, 2019 14:00
sed
# rewrite part of the file from variable
sed -i "/^write_files:/{
s/write_files://g
r $NET_RULES
}" $CLOUD_CONFIG_FILE
@epcim
epcim / gitlab-issues.md
Created April 29, 2019 08:37
gitlab issues