Shardlarda, replikalarda ClickHouse qanday sozlangan?

ClickHouse uchun sharding va replikatsiya konfiguratsiyasida odatda config.xml va users.xml fayllaridagi sozlamalar ishlatiladi. Shardlar uchun alohida klasterlar server manzillarini ko'rsatib belgilanadi, va replikalar uchun ZooKeeper sozlanadi, bu replikalar o'rtasida koordinatsiya va ma'lumotlarni sinxronlashtirishni ta'minlaydi.

Ikki shard serveri va replikalar bilan klaster konfiguratsiyasining misoli:

<remote_servers>
    <klaster_nomi>
        <shard>
            <replika>
                <host>shard1-replica1-host</host>
                <port>9000</port>
            </replika>
            <replika>
                <host>shard1-replica2-host</host>
                <port>9000</port>
            </replika>
        </shard>
        <shard>
            <replika>
                <host>shard2-replica1-host</host>
                <port>9000</port>
            </replika>
            <replika>
                <host>shard2-replica2-host</host>
                <port>9000</port>
            </replika>
        </shard>
    </klaster_nomi>
</remote_servers>

<zookeeper>
    <node>
        <host>zookeeper1</host>
        <port>2181</port>
    </node>
    <node>
        <host>zookeeper2</host>
        <port>2181</port>
    </node>
</zookeeper>

Shu tarzda, har bir shard bir nechta replikaga ega bo'lib, ular ZooKeeper orqali sinxronlashtiriladi. Jadvalarda ReplicatedMergeTree motoridan foydalaniladi, ZooKeeperdagi yo'l va replikaning nomi bilan, bu esa muvofiqlik va nosozliklarga chidamlilikni ta'minlaydi.