Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Duplicate
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2.5.19
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None
Description
Situation is a local cluster of 2 nodes, 2 mxs nodes with configured with keepalived, and an external skysql instance.
external db is connecting to maxscales vip via a binlog router
┌─────────────────────┬────────────────────────────────────────────────────────────────────────┐
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│ Service │ Replication-Proxy │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Router │ binlogrouter │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ State │ Started │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Started At │ Tue Sep 6 16:11:38 2022 │ |
├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Current Connections │ 0 │ |
├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Total Connections │ 190653 │ |
├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Max Connections │ 3 │ |
├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Cluster │ MariaDB-Monitor │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Servers │ │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Services │ │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Filters │ │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Parameters │ { │
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│ │ "auth_all_servers": false, │ |
│ │ "cluster": "MariaDB-Monitor", │ |
│ │ "connection_keepalive": 300, │ |
│ │ "connection_timeout": 0, │ |
│ │ "datadir": "/var/lib/maxscale/binlogs/", │ |
│ │ "enable_root_user": false, │ |
│ │ "expire_log_duration": 172800000, │ |
│ │ "expire_log_minimum_files": 16, │ |
│ │ "localhost_match_wildcard_host": true, │ |
│ │ "log_auth_warnings": true, │ |
│ │ "max_connections": 0, │ |
│ │ "net_timeout": 10000, │ |
│ │ "net_write_timeout": 0, │ |
│ │ "password": "*****", │ |
│ │ "purge_poll_timeout": 120000, │ |
│ │ "purge_startup_delay": 120000, │ |
│ │ "rank": "primary", │ |
│ │ "retain_last_statements": -1, │ |
│ │ "router_options": null, │ |
│ │ "select_master": true, │ |
│ │ "server_id": 109019485, │ |
│ │ "session_trace": false, │ |
│ │ "session_track_trx_state": false, │ |
│ │ "strip_db_esc": true, │ |
│ │ "targets": null, │ |
│ │ "user": "maxscale", │ |
│ │ "version_string": null │ |
│ │ } │
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├─────────────────────┼────────────────────────────────────────────────────────────────────────┤
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│ Router Diagnostics │ { │
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│ │ "current_binlog": "/var/lib/maxscale/binlogs//mariadb-bin.000313", │ |
│ │ "gtid_io_pos": "0-2-10323413", │ |
│ │ "master_config": { │ |
│ │ "host": "10.90.194.27", │ |
│ │ "port": 3306, │ |
│ │ "ssl": false, │ |
│ │ "user": "maxscale" │ |
│ │ } │
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│ │ } │
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└─────────────────────┴────────────────────────────────────────────────────────────────────────┘
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When replication is enabled these errors spam.
2022-10-07 19:45:19 error : Write to Client DCB 10.15.1.115 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:49:14 error : Write to Client DCB 10.15.1.115 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:58:44 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:58:46 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:58:49 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:58:53 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:58:55 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:59:04 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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2022-10-07 19:59:07 error : Write to Client DCB 10.15.1.111 in state DCB::State::POLLING failed: 104, Connection reset by peer
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Cause is a spike in CPU usage on the database and overall slowness in the DB.
Attachments
Issue Links
- duplicates
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- Closed
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