修改etcd配置文件
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@ -28,13 +28,9 @@ $ sudo mv etcd-v3.1.4-linux-amd64/etcd* /root/local/bin
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## 创建 etcd 的 systemd unit 文件
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## 创建 etcd 的 systemd unit 文件
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注意替换 `ETCD_NAME` 和 `INTERNAL_IP` 变量的值;
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注意替换IP地址为你自己的etcd集群的主机IP。
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``` bash
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``` bash
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$ export ETCD_NAME=sz-pg-oam-docker-test-001.tendcloud.com
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$ export INTERNAL_IP=172.20.0.113
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$ sudo mkdir -p /var/lib/etcd /var/lib/etcd
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$ cat > etcd.service <<EOF
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[Unit]
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[Unit]
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Description=Etcd Server
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Description=Etcd Server
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After=network.target
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After=network.target
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@ -46,38 +42,54 @@ Documentation=https://github.com/coreos
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Type=notify
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Type=notify
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WorkingDirectory=/var/lib/etcd/
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WorkingDirectory=/var/lib/etcd/
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EnvironmentFile=-/etc/etcd/etcd.conf
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EnvironmentFile=-/etc/etcd/etcd.conf
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ExecStart=/root/local/bin/etcd \\
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ExecStart=/usr/bin/etcd \
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--name ${ETCD_NAME} \\
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--name ${ETCD_NAME} \
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--cert-file=/etc/kubernetes/ssl/kubernetes.pem \\
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--cert-file=/etc/kubernetes/ssl/kubernetes.pem \
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--key-file=/etc/kubernetes/ssl/kubernetes-key.pem \\
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--key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
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--peer-cert-file=/etc/kubernetes/ssl/kubernetes.pem \\
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--peer-cert-file=/etc/kubernetes/ssl/kubernetes.pem \
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--peer-key-file=/etc/kubernetes/ssl/kubernetes-key.pem \\
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--peer-key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
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--trusted-ca-file=/etc/kubernetes/ssl/ca.pem \\
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--trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
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--peer-trusted-ca-file=/etc/kubernetes/ssl/ca.pem \\
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--peer-trusted-ca-file=/etc/kubernetes/ssl/ca.pem \
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--initial-advertise-peer-urls https://${INTERNAL_IP}:2380 \\
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--initial-advertise-peer-urls ${ETCD_INITIAL_ADVERTISE_PEER_URLS} \
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--listen-peer-urls https://${INTERNAL_IP}:2380 \\
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--listen-peer-urls ${ETCD_LISTEN_PEER_URLS} \
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--listen-client-urls https://${INTERNAL_IP}:2379,https://127.0.0.1:2379 \\
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--listen-client-urls ${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \
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--advertise-client-urls https://${INTERNAL_IP}:2379 \\
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--advertise-client-urls ${ETCD_ADVERTISE_CLIENT_URLS} \
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--initial-cluster-token etcd-cluster-0 \\
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--initial-cluster-token ${ETCD_INITIAL_CLUSTER_TOKEN} \
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--initial-cluster sz-pg-oam-docker-test-001.tendcloud.com=https://172.20.0.113:2380,sz-pg-oam-docker-test-002.tendcloud.com=https://172.20.0.114:2380,sz-pg-oam-docker-test-003.tendcloud.com=https://172.20.0.115:2380 \\
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--initial-cluster infra1=https://172.20.0.113:2380,infra2=https://172.20.0.114:2380,infra3=https://172.20.0.115:2380 \
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--initial-cluster-state new \\
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--initial-cluster-state new \
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--data-dir=/var/lib/etcd
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--data-dir=${ETCD_DATA_DIR}
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Restart=on-failure
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Restart=on-failure
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RestartSec=5
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RestartSec=5
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LimitNOFILE=65536
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LimitNOFILE=65536
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[Install]
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[Install]
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WantedBy=multi-user.target
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WantedBy=multi-user.target
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EOF
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```
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```
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+ 指定 `etcd` 的工作目录为 `/var/lib/etcd`,数据目录为 `/var/lib/etcd`,需在启动服务前创建这两个目录;
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+ 指定 `etcd` 的工作目录为 `/var/lib/etcd`,数据目录为 `/var/lib/etcd`,需在启动服务前创建这两个目录;
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+ 为了保证通信安全,需要指定 etcd 的公私钥(cert-file和key-file)、Peers 通信的公私钥和 CA 证书(peer-cert-file、peer-key-file、peer-trusted-ca-file)、客户端的CA证书(trusted-ca-file);
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+ 为了保证通信安全,需要指定 etcd 的公私钥(cert-file和key-file)、Peers 通信的公私钥和 CA 证书(peer-cert-file、peer-key-file、peer-trusted-ca-file)、客户端的CA证书(trusted-ca-file);
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+ 创建 `kubernetes.pem` 证书时使用的 `kubernetes-csr.json` 文件的 `hosts` 字段**包含所有 etcd 节点的 INTERNAL_IP**,否则证书校验会出错;
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+ 创建 `kubernetes.pem` 证书时使用的 `kubernetes-csr.json` 文件的 `hosts` 字段**包含所有 etcd 节点的IP**,否则证书校验会出错;
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+ `--initial-cluster-state` 值为 `new` 时,`--name` 的参数值必须位于 `--initial-cluster` 列表中;
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+ `--initial-cluster-state` 值为 `new` 时,`--name` 的参数值必须位于 `--initial-cluster` 列表中;
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完整 unit 文件见:[etcd.service](./systemd/etcd.service)
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完整 unit 文件见:[etcd.service](./systemd/etcd.service)
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环境变量配置文件`/etc/etcd/etcd.conf`。
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```ini
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# [member]
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ETCD_NAME=infra1
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ETCD_DATA_DIR="/var/lib/etcd"
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ETCD_LISTEN_PEER_URLS="https://172.20.0.113:2380"
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ETCD_LISTEN_CLIENT_URLS="https://172.20.0.113:2379"
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#[cluster]
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ETCD_INITIAL_ADVERTISE_PEER_URLS="https://172.20.0.113:2380"
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ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
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ETCD_ADVERTISE_CLIENT_URLS="https://172.20.0.113:2379"
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```
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这是172.20.0.113节点的配置,其他两个etcd节点只要将上面的IP地址改成相应节点的IP地址即可。
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## 启动 etcd 服务
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## 启动 etcd 服务
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``` bash
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``` bash
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