ETCD 集群备份与恢复
echo "=== 查看数据 ==="
docker exec -it etcd_etcd3_1 etcdctl --endpoints=http://192.168.100.91:32379 get "" --from-key
docker exec -it etcd_etcd3_1 etcdctl --endpoints=http://192.168.100.91:32379 get '/test' --prefix
docker exec -it etcd_etcd3_1 etcdctl --endpoints=http://192.168.100.91:32379 get '/test' --prefix --keys-only
etcdctl get "" --from-key --keys-only // 查看备份文件中的数据
etcdctl get '/apisix' --prefix --keys-only // 查看备份文件中的数据
echo ""
echo "=== 备份与恢复测试 ==="
docker exec etcd_etcd3_1 etcdctl --write-out=table snapshot status /bitnami/etcd/data/etcd_backup.db
echo "=== 备份目标数据 ==="
docker exec etcd_etcd3_1 etcdctl --endpoints=http://localhost:2379 snapshot save /bitnami/etcd/etcd_backup.db
echo "=== 导出备份数据 ==="
docker cp etcd_etcd3_1:/bitnami/etcd/data/etcd_backup.db /tmp/etcd_backup/
echo "=== 查看备份数据 ==="
docker exec etcd_etcd3_1 etcdctl --write-out=table snapshot status /bitnami/etcd/etcd_backup.db
echo "=== 关闭集群（如果已经启动） ==="
docker-compose -f 1/docker-compose.yml down
docker-compose -f 2/docker-compose.yml down
docker-compose -f 3/docker-compose.yml down
echo "=== 移出旧数据 ==="
mv 2/data2 bak2
mv 1/data1 bak1
mv 3/data3 bak3
echo "=== 使用临时容器处理数据，三个节点依次生成数据 ==="
docker run --rm \
-v /tmp/etcd_backup:/backup \
-v /etcd_cluster/2/data2:/var/etcd \
quay.io/coreos/etcd:v3.5.12 \
etcdutl snapshot restore /backup/etcd_backup.db \
--name etcd-2 \
--data-dir /var/etcd \
--initial-advertise-peer-urls http://192.168.100.91:2390 \
--initial-cluster "etcd-1=http://192.168.100.91:2380,etcd-2=http://192.168.100.91:2390,etcd-3=http://192.168.100.91:2370" \
--initial-cluster-token etcd-cluster
docker run --rm \
-v /tmp/etcd_backup:/backup \
-v /etcd_cluster/1/data1:/var/etcd \
quay.io/coreos/etcd:v3.5.12 \
etcdutl snapshot restore /backup/etcd_backup.db \
--name etcd-1 \
--data-dir /var/etcd \
--initial-advertise-peer-urls http://192.168.100.91:2380 \
--initial-cluster "etcd-1=http://192.168.100.91:2380,etcd-2=http://192.168.100.91:2390,etcd-3=http://192.168.100.91:2370" \
--initial-cluster-token etcd-cluster
docker run --rm \
-v /tmp/etcd_backup:/backup \
-v /etcd_cluster/3/data3:/var/etcd \
quay.io/coreos/etcd:v3.5.12 \
etcdutl snapshot restore /backup/etcd_backup.db \
--name etcd-3 \
--data-dir /var/etcd \
--initial-advertise-peer-urls http://192.168.100.91:2370 \
--initial-cluster "etcd-1=http://192.168.100.91:2380,etcd-2=http://192.168.100.91:2390,etcd-3=http://192.168.100.91:2370" \
--initial-cluster-token etcd-cluster
echo "=== 启动集群 ==="
docker-compose -f 1/docker-compose.yml up -d
docker-compose -f 2/docker-compose.yml up -d
docker-compose -f 3/docker-compose.yml up -d
echo "=== 检查集群状态 ==="
docker exec -it etcd-s1 etcdctl --endpoints=http://192.168.100.91:2379,http://192.168.100.91:2369,http://192.168.100.91:2389 endpoint status -w table
echo "=== 测试数据写入同步 ==="
echo "在节点1写入数据..."
docker exec etcd-s1 etcdctl --endpoints=http://192.168.100.91:2379 put cluster_test "etcd-s1"
echo "从节点2读取数据..."
docker exec etcd-s2 etcdctl --endpoints=http://192.168.100.91:2369 get cluster_test
echo "从节点3读取数据..."
docker exec etcd-s3 etcdctl --endpoints=http://192.168.100.91:2389 get cluster_test
echo "查看数据"
docker exec -it etcd-s1 etcdctl --endpoints=http://192.168.100.91:32379 get '/test' --prefix --keys-only