a5e57879ab
- Overrode uwsgi default configs to improve stability and performance. - Increased mas number of worker processes to increase capacity and performance. - Enabled uwsgi cheaper subsystem to scale worker processes dynamically. - Uplifted uwsgi to the latest release to bring bug fixes and improvements since 2018. Upgraded uwsgi to bring in bug fixes since 2018. For background information for this change please see: https://uwsgi-docs.readthedocs.io/en/latest/ThingsToKnow.html Change-Id: If067e9786e9dbbd39ef832dea6f51aa5523af4d7
79 lines
3.6 KiB
Bash
79 lines
3.6 KiB
Bash
#!/bin/bash
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#
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# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -e
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if [ "$1" = 'server' ]; then
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set -x
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PORT=${PORT:-9000}
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HTTP_TIMEOUT=${HTTP_TIMEOUT:-600}
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# Number of uWSGI workers to handle API request
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SHIPYARD_API_WORKERS=${SHIPYARD_API_WORKERS:-"16"}
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#Threads per worker
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SHIPYARD_API_THREADS=${SHIPYARD_API_THREADS:-"1"}
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# use uwsgi cheaper-busyness plugin for dynamic worker scaling
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SHIPYARD_API_CHEAPER_ALGO=${SHIPYARD_API_CHEAPER_ALGO:-"busyness"}
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# Minimum number of workers allowed
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SHIPYARD_API_CHEAPER=${SHIPYARD_API_CHEAPER:-"4"}
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# Number of workers created at startup
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SHIPYARD_API_CHEAPER_INITIAL=${SHIPYARD_API_CHEAPER_INITIAL:-"8"}
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# How many workers to spawn each time
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SHIPYARD_API_CHEAPER_STEP=${SHIPYARD_API_CHEAPER_STEP:-"4"}
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# Length of a busyness cycle in seconds
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SHIPYARD_API_CHEAPER_OVERLOAD=${SHIPYARD_API_CHEAPER_OVERLOAD:-"1"}
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# How many cycles to wait before killing workers due to low load
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SHIPYARD_API_CHEAPER_BUSYNESS_MULTIPLIER=${SHIPYARD_API_CHEAPER_BUSYNESS_MULTIPLIER:-"60"}
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# Below this threshold, kill workers (if stable for multiplier cycles)
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SHIPYARD_API_CHEAPER_BUSYNESS_MIN=${SHIPYARD_API_CHEAPER_BUSYNESS_MIN:-"20"}
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# Above this threshold, spawn new workers
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SHIPYARD_API_CHEAPER_BUSYNESS_MAX=${SHIPYARD_API_CHEAPER_BUSYNESS_MAX:-"75"}
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# Spawn emergency workers if more than this many requests are waiting in the queue
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SHIPYARD_API_CHEAPER_BUSYNESS_BACKLOG_ALERT=${SHIPYARD_API_CHEAPER_BUSYNESS_BACKLOG_ALERT:-"40"}
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# How many emergegency workers to create if there are too many requests in the queue
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SHIPYARD_API_CHEAPER_BUSYNESS_BACKLOG_STEP=${SHIPYARD_API_CHEAPER_BUSYNESS_BACKLOG_STEP:-"1"}
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# Start shipyard application
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# for more info about these default overrides please read
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# https://uwsgi-docs.readthedocs.io/en/latest/ThingsToKnow.html
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exec uwsgi \
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--http :${PORT} \
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--paste config:/etc/shipyard/api-paste.ini \
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--enable-threads \
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-L \
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--pyargv "--config-file /etc/shipyard/shipyard.conf" \
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--threads ${SHIPYARD_API_THREADS} \
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--workers ${SHIPYARD_API_WORKERS} \
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--http-timeout ${HTTP_TIMEOUT} \
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--strict \
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--master \
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--vacuum \
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--single-interpreter \
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--die-on-term \
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--need-app \
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--cheaper-algo ${SHIPYARD_API_CHEAPER_ALGO} \
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--cheaper ${SHIPYARD_API_CHEAPER} \
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--cheaper-initial ${SHIPYARD_API_CHEAPER_INITIAL} \
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--cheaper-step ${SHIPYARD_API_CHEAPER_STEP} \
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--cheaper-overload ${SHIPYARD_API_CHEAPER_OVERLOAD} \
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--cheaper-busyness-multiplier ${SHIPYARD_API_CHEAPER_BUSYNESS_MULTIPLIER} \
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--cheaper-busyness-min ${SHIPYARD_API_CHEAPER_BUSYNESS_MIN} \
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--cheaper-busyness-max ${SHIPYARD_API_CHEAPER_BUSYNESS_MAX} \
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--cheaper-busyness-backlog-alert ${SHIPYARD_API_CHEAPER_BUSYNESS_BACKLOG_ALERT} \
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--cheaper-busyness-backlog-step ${SHIPYARD_API_CHEAPER_BUSYNESS_BACKLOG_STEP}
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else
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CMD="shipyard"
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# Execute shipyard command
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exec ${CMD} $@
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fi
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