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Chris Kim Oats87

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@Oats87
Oats87 / centos-node-prep.sh
Created October 8, 2019 20:25
fdisk /dev/sdb
mkdir /var/lib/docker
echo $(blkid /dev/sdb1 | awk '{print $2}' | sed -e 's/"//g') /var/lib/docker ext4 defaults 0 0 >> /etc/fstab
sed -i 's/\/dev\/mapper\/centos-swap/#\/dev\/mapper\/centos-swap/g' /etc/fstab
mount -a
reboot
@Oats87
Oats87 / active-rancher-controller.sh
Created December 13, 2019 18:09
kubectl get configmap -n kube-system cattle-controllers -o json | jq -r '.metadata.annotations["control-plane.alpha.kubernetes.io/leader"]' | jq -r ".holderIdentity"
@Oats87
Oats87 / find-hung-resources
Created January 6, 2020 23:59
etcdctl get / --prefix --endpoints=${ETCDCTL_ENDPOINTS} --keys-only | grep ${NAMESPACE}
@Oats87
Oats87 / gist:ef581310361cdc328dbaa4c1c8913980
Created February 18, 2020 21:49
delete states
for i in $(kubectl get state -n hobbyfarm | awk '{print $1}' | grep -v "NAME"); do kubectl -n hobbyfarm patch state $i -p '{"metadata":{"finalizers": []}}' --type=merge; done
@Oats87
Oats87 / seal.sh
Last active July 31, 2020 23:26
#!/bin/sh
sed -i "/\b\UUID\b/d" /etc/sysconfig/network-scripts/ifcfg-ens192
rm -vf /etc/ssh/ssh_host_*
systemctl stop systemd-journald.socket
find /var/log -type f -exec rm {} \;
rm -rf /var/log/journal/*
rm /root/.bash_history; history -c
systemctl poweroff
@Oats87
Oats87 / push.sh
Created October 7, 2020 18:35
Requires skopeo and lots of disk space
#!/bin/bash
REPO=${REPO:-rancher}
IMAGE=${IMAGE:-rancher-agent}
TAG=${TAG:-v2.5.1-rc1}
DESTREPO=${DESTREPO:-oats87}
DESTIMAGE=${DESTIMAGE:-$IMAGE}
DESTTAG=${DESTTAG:-$TAG}
@Oats87
Oats87 / set-up-rke2-bin.sh
Created May 27, 2021 18:01
export KUBECONFIG=/etc/rancher/rke2/rke2.yaml; export PATH=$PATH:/var/lib/rancher/rke2/bin
@Oats87
Oats87 / gist:353b27d5a9d9230906d93bc9129be81e
Created August 27, 2021 18:09
crictl -r /var/run/k3s/containerd/containerd.sock exec -it $(crictl -r /var/run/k3s/containerd/containerd.sock ps | grep etcd | awk '{print $1}') /bin/bash
@Oats87
Oats87 / collect.sh
Created July 7, 2022 16:18
Collect pprof for Rancher in K8s
#!/bin/sh
for pod in $(kubectl get pods --no-headers -l app=rancher -n cattle-system | cut -d ' ' -f1); do
echo Collecting pprof information for $pod - this will take some time.
kubectl -n cattle-system exec $pod -c rancher -- curl -s http://localhost:6060/debug/pprof/profile -o profile;
kubectl -n cattle-system cp $pod:profile pprof-$pod-profile -c rancher;
kubectl -n cattle-system exec $pod -c rancher -- curl -s http://localhost:6060/debug/pprof/goroutine -o goroutine;
kubectl -n cattle-system cp $pod:goroutine pprof-$pod-goroutine -c rancher;
kubectl -n cattle-system exec $pod -c rancher -- curl -s http://localhost:6060/debug/pprof/heap -o heap;
kubectl -n cattle-system cp $pod:heap pprof-$pod-heap -c rancher;
kubectl -n cattle-system exec $pod -c rancher -- curl -s http://localhost:6060/debug/pprof/threadcreate -o threadcreate;
@Oats87
Oats87 / get-init-machine-for-cluster.sh
Created April 11, 2023 15:53
Get the init machine for a managed K3s/RKE2 cluster in Rancher. Requires jq
CLUSTER_NAME="CLUSTER-NAME"; kubectl get rkebootstrap -n fleet-default $(kubectl get secrets -n fleet-default --field-selector=type=rke.cattle.io/machine-plan -l cluster.x-k8s.io/cluster-name="$CLUSTER_NAME",rke.cattle.io/init-node=true -o json | jq -r '.items[0].metadata.ownerReferences[0].name') -o json | jq -r '.metadata.ownerReferences[0].name'