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01e1c5345a
In case you have different roles for the same user on multiple clusters,
ON CLUSTER query can help to overcome some limitations.
Consider the following example:
- cluster_with_data, dev_user (readonly=2)
- stage_cluster, dev_user (readonly=0)
So when you will execute the following query from stage_cluster, it will
be successfully executed, since ON CLUSTER queries has different system
profile:
DROP DATABASE default ON CLUSTER cluster_with_data
This is not 100% safe, but at least something.
Note, that right now only ON CLUSTER query it self is supported, but
separate clusters are not (i.e. GRANT CLUSTER some_cluster_name TO
default), since right now grants sticked to database+.
v2: on_cluster_queries_require_cluster_grant
v3: fix test and process flags as bit mask
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
32 lines
1.4 KiB
Bash
Executable File
32 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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# shellcheck source=../shell_config.sh
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. "$CURDIR"/../shell_config.sh
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function cleanup()
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{
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$CLICKHOUSE_CLIENT -nmq "
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DROP USER IF EXISTS with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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DROP USER IF EXISTS without_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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DROP DATABASE IF EXISTS db_with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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"
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}
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cleanup
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trap cleanup EXIT
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$CLICKHOUSE_CLIENT -nmq "
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CREATE USER with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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CREATE USER without_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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GRANT CLUSTER, CREATE ON *.* TO with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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GRANT CREATE ON *.* TO without_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME;
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"
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echo "with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME"
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$CLICKHOUSE_CLIENT --user "with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME" -q "CREATE DATABASE IF NOT EXISTS db_with_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME ON CLUSTER test_shard_localhost" >/dev/null
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echo "without_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME"
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$CLICKHOUSE_CLIENT --user "without_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME" -q "CREATE DATABASE IF NOT EXISTS db_without_on_cluster_$CLICKHOUSE_TEST_UNIQUE_NAME ON CLUSTER test_shard_localhost" |& {
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grep -m1 -F -o "Not enough privileges. To execute this query it's necessary to have grant CLUSTER ON *.*. (ACCESS_DENIED)"
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}
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