25a49624c7
Due to how the nginx proxy implementation works, if an app has either many process types or many containers for a process type other than web, it is possible to see downtime on the web process due to the old web containers rotating out _before_ we reload the nginx config. The correct fix would be to use some sort of dns-based resolution for the nginx config, but pending that change, we reload nginx twice now - ugh - to avoid this.
70 lines
2.9 KiB
Bash
Executable File
70 lines
2.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eo pipefail
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[[ $DOKKU_TRACE ]] && set -x
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source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
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source "$PLUGIN_CORE_AVAILABLE_PATH/common/property-functions"
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source "$PLUGIN_AVAILABLE_PATH/checks/functions"
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main() {
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declare APP="$1" IMAGE_SOURCE_TYPE="$2" IMAGE="$3" IMAGE_TAG="$4" PROC_TYPE="$5" PROC_COUNT="$6"
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local CONTAINER_INDEX=1
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local image_vendor
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dokku_log_info1 "Deploying $PROC_TYPE (count=$PROC_COUNT)"
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DOKKU_CHECKS_DISABLED="$(is_app_proctype_checks_disabled "$APP" "$PROC_TYPE")"
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if [[ "$DOKKU_CHECKS_DISABLED" == "true" ]]; then
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dokku_log_verbose "Zero downtime is disabled, stopping currently running containers ($PROC_TYPE)"
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local cid proctype_oldids="$(get_app_running_container_ids "$APP" "$PROC_TYPE" 2>/dev/null)"
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for cid in $proctype_oldids; do
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dokku_log_verbose "Stopping $cid ($PROC_TYPE)"
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# Retire the containers to ensure they get removed
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plugn trigger scheduler-register-retired "$APP" "$cid" "$DOKKU_WAIT_TO_RETIRE"
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# Disable the container restart policy
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"$DOCKER_BIN" container update --restart=no "$cid" &>/dev/null || true
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# shellcheck disable=SC2086
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"$DOCKER_BIN" container stop $DOCKER_STOP_TIME_ARG "$cid" &>/dev/null
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done
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fi
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local PROCESS_TMP_FILE=$(mktemp "/tmp/dokku-${DOKKU_PID}-${FUNCNAME[0]}.XXXXXX")
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trap "rm -rf '$PROCESS_TMP_FILE' >/dev/null" RETURN INT TERM
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while [[ $CONTAINER_INDEX -le $PROC_COUNT ]]; do
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echo "$PLUGIN_AVAILABLE_PATH/scheduler-docker-local/bin/scheduler-deploy-process-container $APP $IMAGE_SOURCE_TYPE $IMAGE $IMAGE_TAG $PROC_TYPE $PROC_COUNT $CONTAINER_INDEX" >>"$PROCESS_TMP_FILE"
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CONTAINER_INDEX=$((CONTAINER_INDEX + 1))
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done
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INJECT_INIT_FLAG="$(fn-plugin-property-get "scheduler-docker-local" "$APP" "init-process" "")"
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if [[ -z "$INJECT_INIT_FLAG" ]]; then
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# special-case linuxserver.io images as those always use an s6-overlay
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image_vendor="$("$DOCKER_BIN" image inspect --format '{{ index .Config.Labels "org.opencontainers.image.vendor" }}' "$IMAGE")"
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if [[ "$image_vendor" == "linuxserver.io" ]]; then
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INJECT_INIT_FLAG="false"
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else
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INJECT_INIT_FLAG="true"
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fi
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fi
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PARALLEL_DEPLOY_COUNT="$(plugn trigger "app-json-process-deploy-parallelism" "$APP" "$PROC_TYPE")"
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DOKKU_CHECKS_DISABLED="$DOKKU_CHECKS_DISABLED" INJECT_INIT_FLAG="$INJECT_INIT_FLAG" parallel --will-cite --halt soon,fail=1 --jobs "$PARALLEL_DEPLOY_COUNT" --ungroup <"$PROCESS_TMP_FILE"
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plugn trigger scheduler-post-deploy-process "$APP" "$PROC_TYPE"
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# cleanup when we scale down
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if [[ "$PROC_COUNT" == 0 ]]; then
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local CONTAINER_IDX_OFFSET=0
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else
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local CONTAINER_IDX_OFFSET=$((PROC_COUNT + 1))
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fi
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local container_state_filetype
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for container_state_filetype in CONTAINER IP PORT; do
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cd "$DOKKU_ROOT/$APP"
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find . -maxdepth 1 -name "$container_state_filetype.$PROC_TYPE.*" -printf "%f\n" | sort -t . -k 3 -n | tail -n +$CONTAINER_IDX_OFFSET | xargs rm -f
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done
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}
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main "$@"
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