This article describes the issue of the following commit error being generated in the chassis cluster/VC:

warning: rcp failed(Unknown error: 0)
warning: srcpath=node0:/config/juniper.conf+.gz destpath=/var/tmp/juniper.conf+.gz mgmt_peer_name= <unknown>
warning: pull configuration failed, fallback to push configuration method

This KB is also applicable for EX4300-VC.

At times, when a commit is performed in the cluster/VC, the following error message may be generated :

{primary:node0}[edit]
root@SRX210 # commit
node0:
configuration check succeeds
node1:
warning: rcp failed(Unknown error: 0)
warning: srcpath=node0:/config/juniper.conf+.gz destpath=/var/tmp/juniper.conf+.gz mgmt_peer_name= <unknown>
warning: pull configuration failed, fallback to push configuration method
commit complete
node0:
commit complete

Please follow the steps below to resolve the issue :

• This could be due to CF space not being available on the particular node/FPC. Run the storage cleanup using the CLI :  request system storage cleanup  command to release the CF space on the particular node/FPC (which is node 1 in this example) :

In the case of VC :

> request session member 1
> request system storage cleanup

• If the issue persists, try restarting the mgd process on both the members.

> start shell user root
% ps -auwx | grep mgd
% kill -9 <pid>

• If restarting the mgd process doesn't resolve the issue, please try power-cycling the affected node/FPC.

2024 Mar 18: This KB also applies to EX4300 VC.

2025 Apr 10 : Added additional steps to resolve the issue.