OneLiner commands that helped me on some scenarios
k get --all-namespaces all -o go-template='{{range .items}}{{if .spec.template}}{{$namespace := .metadata.namespace}}{{$instance := index .spec.template.metadata.labels "app.kubernetes.io/instance"}}{{if .spec.template.spec}}{{range .spec.template.spec.containers}}{{if .env}}{{range .env}}{{$namespace}}:{{$instance}}:{{.name}}={{.value}}{{"\n"}}{{end}}{{end}}{{end}}{{end}}{{end}}{{end}}' | sort | uniq > k8s.envI know this looks a little complex. Here's the multiline version of the go template:
{{range .items}}
{{if .spec.template}}
{{$namespace := .metadata.namespace}}
{{$instance := index .spec.template.metadata.labels "app.kubernetes.io/instance"}}
{{if .spec.template.spec}}
{{range .spec.template.spec.containers}}
{{if .env}}
{{range .env}}
{{$namespace}}:{{$instance}}:{{.name}}={{.value}}{{"\n"}}
{{end}}
{{end}}
{{end}}
{{end}}
{{end}}
{{end}}kubectl get pods --all-namespaces | grep Evicted | awk {'print $1" " $2'} | while read ln; do kubectl delete pod -n $ln; donekubectl get pods --all-namespaces | grep Terminating | awk {'print $1" " $2'} | while read ln; do kubectl delete pod --grace-period=0 --force -n $ln; donefunction scrollToBottom() {
window.scrollTo(0, document.body.scrollHeight);
}
setInterval(scrollToBottom, 100)you need to add this function to your Profile.ps1 (more info)
function nugetip ([Parameter(ValueFromRemainingArguments=$true)][string[]]$packages) {
Foreach ($package in $packages) {
install-package $package
}
}cat /etc/passwd | grep -Ev "^#" | cut -d: -f6 | xargs -I {} sh -c 'file={}/.ssh/authorized_keys; if [ -f $file ]; then echo -n {} && echo ":" && cat $file | grep . && echo; fi'thanks to this page. I've just added http_code to it
curl -o /dev/null -s <url> -w "`date +%Y-%m-%dT%H:%M:%S`\ncode: %{http_code}\nlookup: %{time_namelookup}\nconnect: %{time_connect}\nappconnect: %{time_appconnect}\npretransfer: %{time_pretransfer}\nredirect: %{time_redirect}\nstarttransfer: %{time_starttransfer}\ntotal: %{time_total}\n------------------------------\n"- access from source host to both hosts
- stable network on the host that runs this script to the source host
you can setup ssh-agent, then ssh into the source hosts and run this script
- you must fill
target_host,lvm_group, andlvm_namevariables before running it (it's fillable and not a argument so you doable check before running it)
run this on the source host
#!/bin/sh
target_host=""
lvm_group=""
lvm_name=""
if [[ ! -z $target_host ]] && [[ ! -z $lvm_group ]] && [[ ! -z $lvm_name ]]; then
lvm_path="/dev/$lvm_group/$lvm_name"
lvm_size=$(lvs $lvm_path -o LV_SIZE --noheadings --units g | xargs)
read -p "copying $lvm_path with size of $lvm_size to $target_host. is it ok? (y/n) " -n 1 -r
echo # (optional) move to a new line
if [[ $REPLY =~ ^[Yy]$ ]]; then
echo "creating volume on target"
ssh $target_host lvcreate -n $lvm_name $lvm_group -L $lvm_size
echo "activating volume"
lvchange -a y $lvm_path
echo "moving volume to the target"
dd if=$lvm_path bs=4M | ssh $target_host dd of=$lvm_path bs=4M
fi
else
echo "you must fill target_host, lvm_group, and lvm_name variables"
fi
on osx, /etc/passwd is incomplete. you need to use dscacheutil -q user | grep dir | cut -d" " -f2 for getting home directory of users instead. so on osx the command will be this:
dscacheutil -q user | grep dir | cut -d" " -f2 | xargs -I {} sh -c 'file={}/.ssh/authorized_keys; if [ -f $file ]; then printf {} && echo ":" && cat $file | grep . && echo; fi'add it to tasks section of your ansible playbook or to the tasks of your role
- name: install docker-compose
get_url:
dest: /usr/local/bin/docker-compose
url: https://github.com/docker/compose/releases/latest/download/docker-compose-{{ansible_system}}-{{ansible_userspace_architecture}}
mode: 755
- name: bash completion
get_url:
dest: /etc/bash_completion.d/docker-compose
url: https://raw.githubusercontent.com/docker/compose/master/contrib/completion/bash/docker-compose
mode: 755
sunstone doesn't include ram, cpu and hdd on the list page and I needed it for detailed host stats, so here it is.
- onevm access
- jq
sudo wget https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64 -O /usr/local/bin/jq sudo chmod +x /usr/local/bin/jq
- yq
pip install yq
#!/bin/bash
set -e
echo "downloading vm info"
for id in `onevm list | cut -d' ' -f4 | grep .`; do
onevm show $id --xml > $id.xml;
done
echo "merging vm infos"
echo "<VMS>" > vms
cat *.xml >> vms
echo "</VMS>" >> vms
rm *.xml
echo "extracting stats"
cat vms | xq '[.VMS.VM[] | { id: .ID, name: .NAME, cpu: (.TEMPLATE.CPU | tonumber), memory: ((.TEMPLATE.MEMORY | tonumber) / 1024), disk: ((.TEMPLATE.DISK.SIZE | tonumber) / 1024), hostname: (.HISTORY_RECORDS.HISTORY | if type != "array" then [.] else . end | last).HOSTNAME}]' > data.json
rm vms
cat data.json | jq -r '(.[0] | keys_unsorted) as $keys | $keys, map([.[ $keys[] ]])[] | @csv' > data.csv
rm data.json