On 27.02.2018 09:36, zahra121 wrote: > Suppose I have a node which is a leader in SolrCloud. > > When I block this leader's SolrCloud and Zookeeper ports by the command > "firewall-cmd --remove-port=<SolrPort>/tcp --permanent", the leader does not > change automatically and this leader status remains active in solr admin UI. > > Thus, I decided to change the leader manually. I tried REBALANCELEADERS and > ADDROLE commands in solrCloud, however the leader did not change! > > How can I manually change the leader if the firewall blocks the SolrCloud > ports from being listened? >
From the manpage of firewall-cmd:
---------------------------------
--permanent
The permanent option --permanent can be used to set options
permanently. These changes are not effective immediately, only after
service restart/reload or system reboot. Without the --permanent option,
a change will only be part of the runtime configuration.
---------------------------------
So you should also apply it to the runtime configuration. Also note,
that this is a stateful firewall. So rules basically apply to connection
establishment. Changes in firewall rules probably do not interrupt
running connections. You should check that with tcpdump.
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