Peter Corless PeterCorless
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| ws.register_handler("echo", [] (input_stream<char>& in, | |
| output_stream<char>& out) { | |
| return repeat([&in, &out]() { | |
| return in.read().then([&out](temporary_buffer<char> f) { | |
| std::cerr << "f.size(): " << f.size() << "\n"; | |
| if (f.empty()) { | |
| return make_ready_future<stop_iteration>(stop_iteration::yes); | |
| } else { | |
| return out.write(std::move(f)).then([&out]() { | |
| return out.flush().then([] { |
PeterCorless
/ alternator-slow-query-logging.txt
Created
August 4, 2022 05:28
ScyllaDB Alternator Slow Query Logging
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| cqlsh> select parameters, duration from system_traces.node_slow_log where start_time=b7a44589-8711-11eb-8053-14c6c5faf955; | |
| parameters | duration | |
| ---------------------------------------------------------------------------------------------+---------- | |
| {'alternator_op': 'DeleteTable', 'query': '{"TableName": "alternator_Test_1615979572905"}'} | 75732 | |
| [{ | |
| 'start_time': 'b7d42b37-a661-11eb-a391-3d2009e69e44', | |
| 'node_ip': '127.0.0.1', | |
| 'shard': '0', | |
| 'command': '{"TableName": "Pets", "Key": {"p": {"S": "dog"}}}', |
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| sctool repair -K system* --name system_auth --dry-run --cron '1 2 3 4 5' | |
| NOTICE: dry run mode, repair is not scheduled | |
| Cron: 1 2 3 4 5 (At 02:01 AM, on day 3 of the month, and on Friday, only in April) | |
| Tz: America/New_York | |
| Data Centers: | |
| - dc1 | |
| - dc2 |
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| sctool status -c test-cluster | |
| Datacenter: eu-west | |
| ╭────┬────────────┬────────────┬──────────┬────────────────┬──────────┬──────┬──────────┬────────┬──────────┬──────────────────────────────────────╮ | |
| │ │ Alternator │ CQL │ REST │ Address │ Uptime │ CPUs │ Memory │ Scylla │ Agent │ Host ID │ | |
| ├────┼────────────┼────────────┼──────────┼────────────────┼──────────┼──────┼──────────┼────────┼──────────┼──────────────────────────────────────┤ | |
| │ UN │ UP (12ms) │ DOWN (0ms) │ UP (3ms) │ 192.168.100.11 │ 1h32m35s │ 4 │ 31.11GiB │ 4.2.1 │ 2.5.0 │ 1edbfd5b-4b1c-4bb0-afab-d69fd25db6af │ | |
| │ UN │ UP (8ms) │ UP (3ms) │ UP (5ms) │ 192.168.100.12 │ 1h32m35s │ 4 │ 31.11GiB │ 4.2.1 │ 2.5.0 │ 0c0999a2-c879-4e69-9924-1641c8487bd5 │ | |
| │ UN │ UP (10ms) │ UP (8ms) │ UP (1ms) │ 192.168.100.13 │ 1h32m35s │ 4 │ 31.11GiB │ 4.2.1 │ 2.5.0 │ 73e9818e-ed8d-4ea8-89e4-cf485dfd4ebe │ | |
| ╰────┴────────────┴────────────┴──────────┴────────────────┴──────────┴──────┴─ |
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| $ sctool status | |
| Cluster: test (77472fd3-a85f-4c8e-bdf5-6c17696ab975) | |
| Datacenter: dc1 | |
| ╭────┬────────────┬──────────┬──────────┬────────────────┬──────────┬──────┬──────────┬────────┬──────────┬──────────────────────────────────────╮ | |
| │ │ Alternator │ CQL │ REST │ Address │ Uptime │ CPUs │ Memory │ Scylla │ Agent │ Host ID │ | |
| ├────┼────────────┼──────────┼──────────┼────────────────┼──────────┼──────┼──────────┼────────┼──────────┼──────────────────────────────────────┤ | |
| │ UN │ UP (13ms) │ UP (5ms) │ UP (2ms) │ 192.168.100.11 │ 7h26m34s │ 4 │ 31.12GiB │ 4.2.1 │ Snapshot │ 3827c1d1-b300-4093-9839-0cf01f1b9346 │ | |
| │ UN │ UP (9ms) │ UP (3ms) │ UP (2ms) │ 192.168.100.12 │ 7h26m34s │ 4 │ 31.12GiB │ 4.2.1 │ Snapshot │ a4f20c78-0a64-490c-b7f4-f52a62667ff8 │ | |
| │ UN │ UP (14ms) │ UP (4ms) │ UP (2ms) │ 192.168.100.13 │ 7h26m34s │ 4 │ 31.12GiB │ 4.2.1 │ Snapshot │ ffa39462-d3f1-46d9-875c-ef89044e951e │ | |
| ╰────┴────────────┴──────────┴──────────┴──────────────── |
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| $ sctool suspend -c prod | |
| $ sctool task list | |
| Cluster: prod (097351fe-3c28-4f13-bbac-213981513968) | |
| ╭─────────────────────────────────────────────────────────────┬─────────────────┬───────────────────────────────────────────┬─────────╮ | |
| │ Task │ Arguments │ Next run │ Status │ | |
| ├─────────────────────────────────────────────────────────────┼─────────────────┼───────────────────────────────────────────┼─────────┤ | |
| │ healthcheck/b657ed84-0451-4c0c-ac4c-dacd704c1ff7 │ │ 29 Mar 21 13:39:05 CEST (+15s) │ DONE │ | |
| │ healthcheck_alternator/7046049b-6ea8-4a58-9d60-c6c241354681 │ │ 29 Mar 21 13:39:05 CEST (+15s) │ DONE │ | |
| │ healthcheck_rest/0303dda3-f417-4997-8d81-6a4936d6be56 │ │ 29 Mar 21 13:39:20 CEST (+1m) │ DONE │ | |
| │ repair/7ddaa89e-d6ae-4292-8d6b-1ab8fa13d39b │ │ [SUSPENDED] 30 Mar 21 00:00:0 |
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| try (Cluster cluster = Cluster.builder().addContactPoint(source).build(); | |
| Session session = cluster.connect()) { |
PeterCorless
/ cqlsh-select-from-system-status.sh
Created
December 29, 2020 18:51
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| cqlsh> SELECT * from system.status; | |
| peer | dc | host_id | load | owns | status | tokens | up | |
| -----------+-------------+--------------------------------------+-------------+------+--------+--------+------ | |
| 127.0.0.1 | datacenter1 | cf58dfca-c221-4b4a-a67a-414d4be5bb33 | 1.18745e+08 | 1 | NORMAL | 256 | True |
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| Status: DONE | |
| Start time: 12 Nov 20 13:17:26 CET | |
| End time: 12 Nov 20 13:21:11 CET | |
| Duration: 3m45s | |
| Progress: 100% | |
| Datacenters: | |
| - dc1 | |
| - dc2 | |
| ╭───────────────┬────────┬──────────┬──────────╮ |
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| > sctool task list Cluster: cluster1 (7313fda0-6ebd-4513-8af0-67ac8e30077b) | |
| ╭───────────────────────────────────────────────────────┬────────────────────────────────────────────────────────────┬───────────────────────────────┬─────────╮ | |
| │ Task │ Arguments │ Next run │ Status │ | |
| ├───────────────────────────────────────────────────────┼────────────────────────────────────────────────────────────┼───────────────────────────────┼─────────┤ | |
| │ healthcheck/ba29df86-6f31-4984-a2ba-a3855290f00d │ │ 12 May 20 13:15:47 UTC (+15s) │ DONE │ | |
| │ healthcheck_rest/dcb6cd6a-f66c-4493-824d-43599dc83519 │ │ 12 May 20 14:08:47 UTC (+1h) │ DONE │ | |
| │ backup/001ce624-9ac2-4076-a502-ec99d01effe4 │ -L s3:backup-bucket --retention 7 --rate-limit 50 │ 13 May 20 13:15:18 UTC ( |
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