Commit `dfbcb970a3`

dfbcb970a33ff6ff1d731c12f41a073da8bbd1b0

parent: dfd79e9c40

Verified · cmc ci/build: success ci/test: success ci/vuln: success

cmc <hello@cleberg.net> · 2026-09-02 03:57 UTC

deploy: resumable copies, and a runner drop-in that cannot starve the host

Deploys stalled at 1% whenever the runner was in the e2e suite: sixty
daemon instances on a VPS sized for one, with nothing holding the
build back, and a plain scp that threw the transfer away on a stall.

install.sh and make deploy-runner copy with rsync --partial --inplace
-z, so a stalled transfer resumes and the binary is compressed on the
wire; install.sh falls back to scp -C where the host has no rsync.

deploy/gitbay-runner.override.conf is a systemd drop-in with Nice=10,
CPUWeight=30 and IOWeight=30, installed by make deploy-runner under
gitbay-runner.service.d. The runner's unit itself was written by hand
on the host and is not in the repository; a drop-in fits whatever it
says.

Layout: unified · split

Makefile +4 −1

		@@ -71,9 +71,12 @@ deploy-runner: preflight
71	71	@echo "==> building $(RUNNER_BIN)"
72	72	$(CROSS) go build -trimpath -ldflags='$(LDFLAGS)' -o $(RUNNER_BIN) ./cmd/gitbay-runner
73	73	@echo "==> pushing runner to $(HOST)"
74		scp -P $(PORT) $(RUNNER_BIN) root@$(HOST):/usr/local/bin/gitbay-runner.new
	74	rsync --partial --inplace -z -e "ssh -p $(PORT)" $(RUNNER_BIN) root@$(HOST):/usr/local/bin/gitbay-runner.new
	75	ssh -p $(PORT) root@$(HOST) 'mkdir -p /etc/systemd/system/gitbay-runner.service.d'
	76	rsync -z -e "ssh -p $(PORT)" deploy/gitbay-runner.override.conf root@$(HOST):/etc/systemd/system/gitbay-runner.service.d/override.conf
75	77	ssh -p $(PORT) root@$(HOST) 'set -eu; \
76	78	chmod 755 /usr/local/bin/gitbay-runner.new; \
77	79	mv /usr/local/bin/gitbay-runner.new /usr/local/bin/gitbay-runner; \
	80	systemctl daemon-reload; \
78	81	systemctl restart gitbay-runner; \
79	82	systemctl --no-pager --lines=3 status gitbay-runner'

deploy/gitbay-runner.override.conf added +11

		@@ -0,0 +1,11 @@
	1	# Drop-in for gitbay-runner.service, installed by `make deploy-runner` to
	2	# /etc/systemd/system/gitbay-runner.service.d/override.conf.
	3	#
	4	# A build must never starve the host: the e2e suite alone starts sixty
	5	# daemon instances, and with nothing holding it back a deploy's scp on
	6	# the admin sshd stalled at 1%. Lower CPU and IO weight keep sshd,
	7	# gitbayd and the backup timers responsive while a build runs.
	8	[Service]
	9	Nice=10
	10	CPUWeight=30
	11	IOWeight=30

deploy/install.sh +7 −1

		@@ -8,7 +8,13 @@ bin=dist/gitbayd-linux-amd64
8	8
9	9	[ -f "$bin" ] \|\| { echo "build first: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o $bin ./cmd/gitbayd" >&2; exit 1; }
10	10
11		scp -P "$port" "$bin" "root@$host:/usr/local/bin/gitbayd.new"
	11	# rsync resumes a transfer the host's load stalled and compresses the
	12	# binary on the wire; scp -C is the fallback where the host has no rsync.
	13	if ssh -p "$port" "root@$host" 'command -v rsync >/dev/null'; then
	14	rsync --partial --inplace -z -e "ssh -p $port" "$bin" "root@$host:/usr/local/bin/gitbayd.new"
	15	else
	16	scp -C -P "$port" "$bin" "root@$host:/usr/local/bin/gitbayd.new"
	17	fi
12	18	ssh -p "$port" "root@$host" '
13	19	set -eu
14	20	chmod 755 /usr/local/bin/gitbayd.new

Commit dfbcb970a3

Commit `dfbcb970a3`