# k3s etcd commands

## etcd

Setup etcdctl using the instructions at https://github.com/etcd-io/etcd/releases/tag/v3.4.13 (changed path to `/usr/local/bin`):

```
ETCD_VER=v3.4.13

# choose either URL
GOOGLE_URL=https://storage.googleapis.com/etcd
GITHUB_URL=https://github.com/etcd-io/etcd/releases/download
DOWNLOAD_URL=${GOOGLE_URL}

rm -f /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz
rm -rf /tmp/etcd-download-test && mkdir -p /tmp/etcd-download-test

curl -L ${DOWNLOAD_URL}/${ETCD_VER}/etcd-${ETCD_VER}-linux-amd64.tar.gz -o /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz
tar xzvf /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz -C /usr/local/bin --strip-components=1
rm -f /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz

etcd --version
etcdctl version
```

* `etcdctl check perf`

```
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl check perf
```

* `etcdctl endpoint status`

```
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl endpoint status --cluster --write-out=table
```

* `etcdctl endpoint health`

```
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl endpoint health --cluster --write-out=table
```

* `etcdctl alarm list`

```
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl alarm list
```

* `etcdctl compact`

```
rev=$(ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl endpoint status --write-out fields | grep Revision | cut -d: -f2)
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl compact $rev
```

* `etcdctl defrag`

```
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl defrag --cluster
```

* `etcdctl get`

```
ETCDCTL_ENDPOINTS='https://127.0.0.1:2379' ETCDCTL_CACERT='/var/lib/rancher/k3s/server/tls/etcd/server-ca.crt' ETCDCTL_CERT='/var/lib/rancher/k3s/server/tls/etcd/server-client.crt' ETCDCTL_KEY='/var/lib/rancher/k3s/server/tls/etcd/server-client.key' ETCDCTL_API=3 etcdctl get / --prefix --keys-only
```

* curl metrics

```
curl -L --cacert /var/lib/rancher/k3s/server/tls/etcd/server-ca.crt --cert /var/lib/rancher/k3s/server/tls/etcd/server-client.crt --key /var/lib/rancher/k3s/server/tls/etcd/server-client.key https://127.0.0.1:2379/metrics
```

* curl version

```
curl -L --cacert /var/lib/rancher/k3s/server/tls/etcd/server-ca.crt --cert /var/lib/rancher/k3s/server/tls/etcd/server-client.crt --key /var/lib/rancher/k3s/server/tls/etcd/server-client.key https://127.0.0.1:2379/version
```