如何在不丢失现有数据的情况下重启 fabric composer？

Question

我已经在我的本地尝试过 "carauction-network" 示例。但是当我使用 "startFabric.sh" 文件启动网络时，它正在删除 Couch DB 并再次创建 Couch DB，因为这个旧数据正在丢失。请建议我们如何在不清理数据的情况下启动结构服务器。

Answer 1

fabric-dev-servers 下的 startFabric.sh（以前称为 fabric-tools）不仅仅是启动 Fabric - 它会删除现有的 Fabric Container 并重新创建新的 Container来自 Docker 图片。这样做的影响是您会从 Fabric 中丢失所有数据和业务网络。除了 PeerAdmin@hlfv1 之外的所有业务网络卡现在都没有用了。

如果您想在创建 Fabric 后停止并启动它，请按照以下命令保留您的业务网络和数据：

切换到 docker-compose.yml 文件所在的目录（例如 /home/<user>/fabric-tools/fabric-scripts/hlfv1/composer）
运行 docker-compose stop 顶部织物容器
运行 docker-compose start 从中断处重新开始。

在使用 docker-compose 命令之前，必须位于正确的文件夹中。

版本更新

使用 Composer v0.20.x（对于 Fabric 1.2）文件夹的 names/version 已更改：

/home/<user>/fabric-dev-servers/fabric-scripts/hlfv12/composer

使用 Composer v0.19.x（较旧，对于 Fabric v1.1）文件夹 names/versions 已更改：

/home/<user>/fabric-dev-servers/fabric-scripts/hlfv11/composer

Answer 2

在 fabric-dev-server/fabric-scripts/hlfv11 中编辑你 startFabric.sh，如下所示

#!/bin/bash

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Exit on first error, print all commands.
set -e

Usage() {
    echo ""
    echo "Usage: ./startFabric.sh [-d || --dev]"
    echo ""
    echo "Options:"
    echo -e "\t-d or --dev: (Optional) enable fabric development mode"
    echo ""
    echo "Example: ./startFabric.sh"
    echo ""
    exit 1
}

Parse_Arguments() {
    while [ $# -gt 0 ]; do
        case  in
            --help)
                HELPINFO=true
                ;;
            --dev | -d)
                FABRIC_DEV_MODE=true
                ;;
        esac
        shift
    done
}

Parse_Arguments $@

if [ "${HELPINFO}" == "true" ]; then
    Usage
fi

#Detect architecture
ARCH=`uname -m`

# Grab the current directory
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

if [ "${FABRIC_DEV_MODE}" == "true" ]; then
    DOCKER_FILE="${DIR}"/composer/docker-compose-dev.yml
else
    DOCKER_FILE="${DIR}"/composer/docker-compose.yml
fi

ARCH=$ARCH docker-compose -f "${DOCKER_FILE}" stop
ARCH=$ARCH docker-compose -f "${DOCKER_FILE}" up -d

# wait for Hyperledger Fabric to start
# incase of errors when running later commands, issue export FABRIC_START_TIMEOUT=<larger number>
echo "sleeping for ${FABRIC_START_TIMEOUT} seconds to wait for fabric to complete start up"
sleep ${FABRIC_START_TIMEOUT}

# Create the channel
#docker exec peer0.org1.example.com peer channel create -o orderer.example.com:7050 -c composerchannel -f /etc/hyperledger/configtx/composer-channel.tx

# Join peer0.org1.example.com to the channel.
#docker exec -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin@org1.example.com/msp" peer0.org1.example.com peer channel join -b composerchannel.block

if [ "${FABRIC_DEV_MODE}" == "true" ]; then
    echo "Fabric Network started in chaincode development mode"
fi

Answer 3

为了扩展 R Thatcher 的解决方案，如果您有权访问 bash shell，那么您可以将此脚本放在您的 fabric-dev-server 文件夹中。它将按照上述步骤重新启动网络，而不会丢失您的数据。简单地 cd 到正确的目录和运行s docker-compose stop & docker-compose start。在重新启动以恢复网络后，运行也可以正常工作。

#!/bin/bash
cd ./fabric-scripts/hlfv1/composer
docker-compose stop
docker-compose start

看似微不足道，并没有给讨论增加多少，但节省了时间。

如何在不丢失现有数据的情况下重启 fabric composer？

How to restart the fabric composer without losing the existing data?

hyperledger-composer