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connection node_2;
connection node_1;
# Lets first see that we can access wsrep schema tables
# Node1
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT COUNT(*) AS EXPECT_1 from mysql.wsrep_cluster;
EXPECT_1
1
SELECT COUNT(*) AS EXPECT_2 FROM mysql.wsrep_cluster_members;
EXPECT_2
2
connection node_2;
# Node2
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_cluster;
EXPECT_1
1
SELECT COUNT(*) AS EXPECT_2 FROM mysql.wsrep_cluster_members;
EXPECT_2
2
connection node_1;
SET GLOBAL wsrep_provider_options = 'pc.ignore_sb=true';
SET GLOBAL wsrep_provider_options = 'pc.weight=2';
connection node_2;
# Desync and disconnect node_2
SET @@global.wsrep_desync = 1;
SET SESSION wsrep_dirty_reads=1;
SET SESSION wsrep_sync_wait=0;
SET GLOBAL wsrep_provider_options = 'gmcast.isolate=1';
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_status';
VARIABLE_VALUE
non-Primary
connection node_1;
# Waiting until node_2 is not part of cluster anymore
# Verify that we can access wsrep schema tables
# Node1
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_cluster;
EXPECT_1
1
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_cluster_members;
EXPECT_1
1
connection node_2;
# Node2
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_cluster;
EXPECT_1
1
SELECT COUNT(*) AS EXPECT_2 FROM mysql.wsrep_cluster_members;
EXPECT_2
2
connection node_2;
# Reconnect node_2 back to cluster
SET GLOBAL wsrep_provider_options = 'gmcast.isolate=0';
SET wsrep_dirty_reads=0;
SHOW STATUS LIKE 'wsrep_desync_count';
Variable_name Value
wsrep_desync_count 0
SET @@global.wsrep_desync = 0;
CALL mtr.add_suppression("WSREP: Protocol violation\\. JOIN message sender .+ ?is not in state transfer \\(SYNCED\\)\\. Message ignored\\.");
connection node_1;
# Wait until both nodes are back to cluster
SET GLOBAL wsrep_provider_options = 'pc.ignore_sb=false';
SET GLOBAL wsrep_provider_options = 'pc.weight=1';
# Verify that we can access wsrep schema tables
# Node1
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_cluster;
EXPECT_1
1
SELECT COUNT(*) AS EXPECT_2 FROM mysql.wsrep_cluster_members;
EXPECT_2
2
connection node_2;
# Node2
SELECT COUNT(*) AS EXPECT_0 FROM mysql.wsrep_streaming_log;
EXPECT_0
0
SELECT COUNT(*) AS EXPECT_1 FROM mysql.wsrep_cluster;
EXPECT_1
1
SELECT COUNT(*) AS EXPECT_2 FROM mysql.wsrep_cluster_members;
EXPECT_2
2
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