NBD setup - No such item
-
@florent i don't get
reconfigure ipsecond time, but backups still without nbd. -
@Tristis-Oris ok
What are the network accessible by the XO VM ? does it contains the NBD enabled network ? -
@florent as i say, XO only one interface it's same host interface where NBD is enabled.
-
@Tristis-Oris And you don't have message like
can't connect to nbd serverin the system log / Xo-server output ? -
@florent never seen such errors. At which step it should happens?
-
@Tristis-Oris when launching a backup, between the snapshot and the beginning of the the transfer. It should try to connect to the host(s) NBD server
-
@florent also , is there a firewall/network filtering between XO and the host ? the conneciton to the NBD server go through the port 10809
-
@florent is NBD server running at dom0?
for clear test: disabled nbd, removed all XO logs. Enabled NBD on host, changed XO interface to this one, run backup task with NBD > no one error at logs.
-
@Tristis-Oris yes the NBD server run in the dom0, one per host
-
@florent hm. Telnet to 10809 is refused even from dom0, to both backup interface and management.
We have no any additional firewalls at network. Host's iptable looks fine.What a name of service, to check if it running?
-
also add
filter = 'xo:backups:DeltaBackupWriter'to config.toml. Anyway no one error during backup. -
@Tristis-Oris I think it is built in in the xapi .
ss -tulpnon my host :
there is a xapi-nbd service
-
@florent looks fine.
also i add extra iptables rules, nothing changed.
iptables -A INPUT -p tcp --dport 10809 -m comment --comment "NBD" -j ACCEPT iptables -A OUTPUT -p tcp --dport 10809 -m comment --comment "NBD" -j ACCEPT -
@Tristis-Oris my iptable are
-P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT -N RH-Firewall-1-INPUT -N xapi_nbd_input_chain -N xapi_nbd_output_chain -A INPUT -p tcp -m tcp --dport 10809 -j xapi_nbd_input_chain -A INPUT -p gre -j ACCEPT -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A OUTPUT -p tcp -m tcp --sport 10809 -j xapi_nbd_output_chain -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp -m icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -i xenapi -p udp -m udp --dport 67 -j ACCEPT -A RH-Firewall-1-INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A RH-Firewall-1-INPUT -p udp -m conntrack --ctstate NEW -m udp --dport 694 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m conntrack --ctstate NEW -m tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m conntrack --ctstate NEW -m tcp --dport 80 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m conntrack --ctstate NEW -m tcp --dport 443 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 21064 -j ACCEPT -A RH-Firewall-1-INPUT -p udp -m multiport --dports 5404,5405 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited -A xapi_nbd_input_chain -i xenbr0 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT -A xapi_nbd_input_chain -j REJECT --reject-with icmp-port-unreachable -A xapi_nbd_output_chain -o xenbr0 -j RETURN -A xapi_nbd_output_chain -j REJECT --reject-with icmp-port-unreachablethere is already a line for nbd
-
@florent everything is default except NBD rule. looks similar.
Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 16 960 xapi_nbd_input_chain tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:10809 0 0 ACCEPT 47 -- * * 0.0.0.0/0 0.0.0.0/0 9872M 155T RH-Firewall-1-INPUT all -- * * 0.0.0.0/0 0.0.0.0/0 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:10809 /* NBD */ 0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:10809 /* NBD */ Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 RH-Firewall-1-INPUT all -- * * 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT 22M packets, 34G bytes) pkts bytes target prot opt in out source destination 0 0 xapi_nbd_output_chain tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spt:10809 4 240 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:10809 /* NBD */ 0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:10809 /* NBD */ Chain RH-Firewall-1-INPUT (2 references) pkts bytes target prot opt in out source destination 341M 9622G ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0 29 5104 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 icmptype 255 0 0 ACCEPT udp -- xenapi * 0.0.0.0/0 0.0.0.0/0 udp dpt:67 9530M 146T ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED 0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 ctstate NEW udp dpt:694 1 52 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:22 65232 3914K ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:80 488K 29M ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:443 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:21064 0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 multiport dports 5404,5405 588K 4800M REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain xapi_nbd_input_chain (1 references) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- xenbr0 * 0.0.0.0/0 0.0.0.0/0 ctstate NEW,ESTABLISHED 16 960 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain xapi_nbd_output_chain (1 references) pkts bytes target prot opt in out source destination 0 0 RETURN all -- * xenbr0 0.0.0.0/0 0.0.0.0/0 0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable -
after telnet request to 10809, rejected packages increased.
Chain xapi_nbd_input_chain (1 references) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- xenbr0 * 0.0.0.0/0 0.0.0.0/0 ctstate NEW,ESTABLISHED 17 1020 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable -
if i have no errors during backup, it means XO didn't try to use NBD?
but at begining of each NBD backup i got +1 to iptables rejected list.
-
@Tristis-Oris said in NBD setup - No such item:
but at begining of each NBD backup i got +1 to iptables rejected list.
I think there is something with the network configuration, but I am far out of my element here .
-
@florent is it any requirements for network\switch etc. Any layers outside of Xen.
-
@Tristis-Oris it hae to let the encrypted traffic flow through the 10809 port. XO will connect directly to the hosts through NBD, not only to the master
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login