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This article focuses on "how to install and configure ETCD". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to install and configure ETCD.

Master: 192.168.56.101

Worker node1: 192.168.56.102

Worker node2: 192.168.56.103

Before installing K8s, manually install and configure etcd to download etcd

Https://github.com/etcd-io/etcd/releases/download/v3.2.30/etcd-v3.2.30-linux-amd64.tar.gz

Transfer to 3 nodes and decompress the package

Mkdir / opt/etcd/ {bin,cfg,ssl}-p

Tar-zxvf etcd-v3.2.30-linux-amd64.tar.gz-C. /

Mv etcd-v3.2.30-linux-amd64/ {etcd,etcdctl} / opt/etcd/bin/ master Node profile / opt/etcd/cfg/etcd

# [Member]

ETCD_NAME= "etcd-1"

ETCD_DATA_DIR= "/ var/lib/etcd/default.etcd"

ETCD_LISTEN_PEER_URLS= "https://192.168.56.101:2380"

ETCD_LISTEN_CLIENT_URLS= "https://192.168.56.101:2379"

# [Clustering]

ETCD_INITIAL_ADVERTISE_PEER_URLS= "https://192.168.56.101:2380"

ETCD_ADVERTISE_CLIENT_URLS= "https://192.168.56.101:2379"

ETCD_INITIAL_CLUSTER= "etcd-1= https://192.168.56.101:2380,etcd-2=https://192.168.56.102:2380,etcd-3=https://192.168.56.103:2380"

ETCD_INITIAL_CLUSTER_TOKEN= "etcd-cluster"

ETCD_INITIAL_CLUSTER_STATE= "new" Worker node1 Node profile / opt/etcd/cfg/etcd

# [Member]

ETCD_NAME= "etcd-2"

ETCD_DATA_DIR= "/ var/lib/etcd/default.etcd"

ETCD_LISTEN_PEER_URLS= "https://192.168.56.102:2380"

ETCD_LISTEN_CLIENT_URLS= "https://192.168.56.102:2379"

# [Clustering]

ETCD_INITIAL_ADVERTISE_PEER_URLS= "https://192.168.56.102:2380"

ETCD_ADVERTISE_CLIENT_URLS= "https://192.168.56.102:2379"

ETCD_INITIAL_CLUSTER= "etcd-1= https://192.168.56.101:2380,etcd-2=https://192.168.56.102:2380,etcd-3=https://192.168.56.103:2380"

ETCD_INITIAL_CLUSTER_TOKEN= "etcd-cluster"

ETCD_INITIAL_CLUSTER_STATE= "new" Worker node2 Node profile / opt/etcd/cfg/etcd

# [Member]

ETCD_NAME= "etcd-3"

ETCD_DATA_DIR= "/ var/lib/etcd/default.etcd"

ETCD_LISTEN_PEER_URLS= "https://192.168.56.103:2380"

ETCD_LISTEN_CLIENT_URLS= "https://192.168.56.103:2379"

# [Clustering]

ETCD_INITIAL_ADVERTISE_PEER_URLS= "https://192.168.56.103:2380"

ETCD_ADVERTISE_CLIENT_URLS= "https://192.168.56.103:2379"

ETCD_INITIAL_CLUSTER= "etcd-1= https://192.168.56.101:2380,etcd-2=https://192.168.56.102:2380,etcd-3=https://192.168.56.103:2380"

ETCD_INITIAL_CLUSTER_TOKEN= "etcd-cluster"

ETCD_INITIAL_CLUSTER_STATE= "new" master node, Worker node1, Worker node2 configuration file / usr/lib/systemd/system/etcd.service

[Unit]

Description=Etcd Server

After=network.target

After=network-online.target

Wants=network-online.target

[Service]

Type=notify

EnvironmentFile=/opt/etcd/cfg/etcd

ExecStart=/opt/etcd/bin/etcd\

-- name=$ {ETCD_NAME}\

-- data-dir=$ {ETCD_DATA_DIR}\

-- listen-peer-urls=$ {ETCD_LISTEN_PEER_URLS}\

-- listen-client-urls=$ {ETCD_LISTEN_CLIENT_URLS}, http://127.0.0.1:2379\

-- advertise-client-urls=$ {ETCD_ADVERTISE_CLIENT_URLS}\

-- initial-advertise-peer-urls=$ {ETCD_INITIAL_ADVERTISE_PEER_URLS}\

-- initial-cluster=$ {ETCD_INITIAL_CLUSTER}\

-- initial-cluster-token=$ {ETCD_INITIAL_CLUSTER_TOKEN}\

-- initial-cluster-state=new\

-- cert-file=/opt/etcd/ssl/server.pem\

-- key-file=/opt/etcd/ssl/server-key.pem\

-- peer-cert-file=/opt/etcd/ssl/server.pem\

-- peer-key-file=/opt/etcd/ssl/server-key.pem\

-- trusted-ca-file=/opt/etcd/ssl/ca.pem\

-- peer-trusted-ca-file=/opt/etcd/ssl/ca.pem

Restart=on-failure

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target copies the previously generated certificate to / opt/etcd/ssl

Cp ca*pem server*pem / opt/etcd/ssl boot and set boot

Systemctl start etcd

Systemctl enable etcd

Check the status of the cluster

/ opt/etcd/bin/etcdctl-ca-file=/opt/etcd/ssl/ca.pem-cert-file=/opt/etcd/ssl/server.pem-key-file=/opt/etcd/ssl/server-key.pem-endpoints= "https://192.168.56.101:2379,https://192.168.56.102:2379,https://192.168.56.103:2379" cluster-health

Member 181ffe2d394f445b is healthy: got healthy result from https://192.168.56.101:2379

Member 737ab8edec59b6e6 is healthy: got healthy result from https://192.168.56.102:2379

Member 87a3a196a794e8f0 is healthy: got healthy result from https://192.168.56.103:2379

Cluster is healthy

At this point, I believe you have a deeper understanding of "how to install and configure ETCD". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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