First network in hyperledger

I am trying to work on my first network in Hyperledger Fabric. Using the following documentation http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html

I have completed the setup till http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html#create-join-channel

but when I run the

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls $CORE_PEER_TLS_ENABLED --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem

I got error as

Error: Got unexpected status: BAD_REQUEST

Searching for the issue i came across http://hyperledgerdocs.readthedocs.io/en/latest/asset_trouble.html

Hence I've tried to use a new channel name as given(old channel name=mychannel), I've tried below cmds

CORE_PEER_COMMITTER_LEDGER_ORDERER=orderer:7050 peer channel create -c myc1

CORE_PEER_COMMITTER_LEDGER_ORDERER=orderer.example.com:7050 peer channel create -c myc1

CORE_PEER_COMMITTER_LEDGER_ORDERER=172.18.0.2:7050 peer channel create -c myc1

For all the three I am getting error

Error: Ordering service endpoint is not valid or missing Usage: peer channel create [flags]

Also I've tried to skip it assuming the channel is already created. hence ran

peer channel join -b ./mychannel.block

But got

Error: proposal failed (err: rpc error: code = Unknown desc = chaincode error (status: 500, message: Cannot create ledger from genesis block, due to LedgerID already exists))

My OS is Ubuntu 16.04

docker ps Kindly help

Let's try to make sure you run thru all the steps as outlined in docs.

First of all you need to edit your docker-compose-cli.yaml file the cli section to comment out line responsible to run automatic flow of channel creation and join:
```
command: /bin/bash -c './scripts/script.sh ${CHANNEL_NAME}; sleep $TIMEOUT'
```

E.g.

# command: /bin/bash -c './scripts/script.sh ${CHANNEL_NAME}; sleep $TIMEOUT'

Next export channel name you are working with:

export CHANNEL_NAME=mychannel
Start the network (use default timeout of 60s):

CHANNEL_NAME=$CHANNEL_NAME docker-compose -f docker-compose-cli.yaml up -d
Enter the cli container:

docker exec -it cli bash
Export environmental variables:

export CHANNEL_NAME=mychannel

Create the channel:

peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls $CORE_PEER_TLS_ENABLED --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem