However, as @maniankara asks, what about the created channels & chaincodes? Once I run docker-compose yml down & then up again (for instance if I needed to regenerate cryptomaterial), then suddenly all channels & chaincode needs to be re-installed again? If I run peer channel list the peers are not part of channels anymore....however, the artifacts are obviously still in the config folder.
So it seems this test network, the orderer, do not save its state?

Currently I just edited the bootstrap.sh to at least quickly bring up different containers, channels & chaincode. It is not ideal, but at least better than doing it all over again:

!/bin/sh

#

Copyright IBM Corp All Rights Reserved

#

SPDX-License-Identifier: Apache-2.0

#
export PATH=$GOPATH/src/github.com/hyperledger/fabric/build/bin:${PWD}/../bin:${PWD}:$PATH
export FABRIC_CFG_PATH=${PWD}
CHANNEL_NAME=allarewelcome

remove previous crypto material and config transactions

rm -fr config/*

rm -fr crypto-config/*

generate crypto material

cryptogen generate --config=./crypto-config.yaml

if [ "$?" -ne 0 ]; then

echo "Failed to generate crypto material..."

exit 1

fi

generate genesis block for orderer

configtxgen -profile OneOrgOrdererGenesis -outputBlock ./config/genesis.block
if [ "$?" -ne 0 ]; then
echo "Failed to generate orderer genesis block..."
exit 1
fi

generate channel configuration transaction

configtxgen -profile OneOrgChannel -outputCreateChannelTx ./config/allarewelcome.tx -channelID allarewelcome
if [ "$?" -ne 0 ]; then
echo "Failed to generate channel configuration transaction..."
exit 1
fi

generate anchor peer transaction

configtxgen -profile OneOrgChannel -outputAnchorPeersUpdate ./config/Org1MSPanchors.tx -channelID allarewelcome -asOrg Org1MSP
if [ "$?" -ne 0 ]; then
echo "Failed to generate anchor peer update for Org1MSP..."
exit 1
fi

sleep 5s

set -ev

don't rewrite paths for Windows Git Bash users

export MSYS_NO_PATHCONV=1

docker-compose -f docker-compose.yml down

docker-compose -f docker-compose.yml up -d zookeeper0.example.com zookeeper1.example.com zookeeper2.example.com kafka0.example.com kafka1.example.com

sleep 60s

docker-compose -f docker-compose.yml up -d Org1ca.example.com Org2ca.example.com orderer.example.com peer1.org1.example.com couchdbOrg1Peer1 couchdbOrg1Peer0 couchdbOrg2Peer0 couchdbOrg2Peer1 peer0.org1.example.com peer0.org2.example.com peer1.org2.example.com cli

wait for Hyperledger Fabric to start

incase of errors when running later commands, issue export FABRIC_START_TIMEOUT=

export FABRIC_START_TIMEOUT=10

echo ${FABRIC_START_TIMEOUT}

sleep ${FABRIC_START_TIMEOUT}

Create the channel

docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin@org1.example.com/msp" peer0.org1.example.com peer channel create -o orderer.example.com:7050 -c allarewelcome -f /etc/hyperledger/configtx/allarewelcome.tx

Join peer0.org1.example.com to the channel.

docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin@org1.example.com/msp" peer0.org1.example.com peer channel join -b allarewelcome.block

Peer1.org1 fetch genesis block from the channel before joining

docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin@org1.example.com/msp" peer1.org1.example.com peer channel fetch oldest allarewelcome.block -c allarewelcome --orderer orderer.example.com:7050

Join peer1.org1.example.com to the channel.

docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/etc/hyperledger/msp/users/Admin@org1.example.com/msp" peer1.org1.example.com peer channel join -b allarewelcome.block

Install chaincode for peer0.org1 version 1.1 through CLI

docker exec -e "CORE_PEER_ADDRESS=peer0.org1.example.com:7051" -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp" cli peer chaincode install -n ccForAll -v 1.1 -p github.com/sacc

Instantiate chaincode 1.1 on peer0.org1

docker exec -e "CORE_PEER_ADDRESS=peer0.org1.example.com:7051" -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp" cli peer chaincode instantiate -n ccForAll -v 1.1 -o orderer.example.com:7050 -C allarewelcome -c '{"Args":["Mach","50"]}' --policy "AND('Org1.peer', OR ('Org1.member'))"

Sleep 10 sec for cc to install

sleep 10s

Try to sign config block for Org2 to join network through CLI

docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp" -e "CORE_PEER_ADDRESS=peer0.org1.example.com:7051" cli peer channel signconfigtx -f org2submitReady.pb

Send config changes to rest of network for approval

docker exec -e "CORE_PEER_LOCALMSPID=Org1MSP" -e "CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp" -e "CORE_PEER_ADDRESS=peer0.org1.example.com:7051" cli peer channel update -f org2submitReady.pb -c allarewelcome -o orderer.example.com:7050

Fetch config block allarewelcome for Peer0.org2

docker exec -e "CORE_PEER_LOCALMSPID=Org2MSP" -e "CORE_PEER_ADDRESS=peer0.org2.example.com:7051" -e "CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp" cli peer channel fetch config Org2AddedConfig.pb -o orderer.example.com:7050 -c allarewelcome

Join channel allarewelcome for peer0.org2

docker exec -e "CORE_PEER_LOCALMSPID=Org2MSP" -e "CORE_PEER_ADDRESS=peer0.org2.example.com:7051" -e "CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp" cli peer channel join -b allarewelcome.block