77 lines
1.6 KiB
Markdown
77 lines
1.6 KiB
Markdown
# Bootstrapping the etcd Cluster
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Kubernetes components are stateless and store cluster state in [etcd](https://github.com/etcd-io/etcd). In this lab you will bootstrap a three node etcd cluster and configure it for high availability and secure remote access.
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## Prerequisites
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Copy `etcd` binaries and systemd unit files to the `server` instance:
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```bash
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scp \
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downloads/etcd-v3.4.27-linux-arm64.tar.gz \
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units/etcd.service \
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root@server:~/
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```
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The commands in this lab must be run on the `server` machine. Login to the `server` machine using the `ssh` command. Example:
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```bash
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ssh root@server
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```
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## Bootstrapping an etcd Cluster
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### Install the etcd Binaries
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Extract and install the `etcd` server and the `etcdctl` command line utility:
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```bash
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{
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tar -xvf etcd-v3.4.27-linux-arm64.tar.gz
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mv etcd-v3.4.27-linux-arm64/etcd* /usr/local/bin/
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}
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```
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### Configure the etcd Server
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```bash
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{
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mkdir -p /etc/etcd /var/lib/etcd
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chmod 700 /var/lib/etcd
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cp ca.crt kube-api-server.key kube-api-server.crt \
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/etc/etcd/
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}
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```
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Each etcd member must have a unique name within an etcd cluster. Set the etcd name to match the hostname of the current compute instance:
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Create the `etcd.service` systemd unit file:
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```bash
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mv etcd.service /etc/systemd/system/
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```
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### Start the etcd Server
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```bash
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{
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systemctl daemon-reload
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systemctl enable etcd
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systemctl start etcd
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}
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```
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## Verification
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List the etcd cluster members:
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```bash
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etcdctl member list
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```
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```text
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6702b0a34e2cfd39, started, controller, http://127.0.0.1:2380, http://127.0.0.1:2379, false
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```
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Next: [Bootstrapping the Kubernetes Control Plane](08-bootstrapping-kubernetes-controllers.md)
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