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