mirror of
https://github.com/balena-os/balena-supervisor.git
synced 2024-12-18 13:26:26 +00:00
3c6e9dd209
The refactor simplifies the implementation and ensures that locks per app can only be held by one supervisor task at the time. Change-type: patch
86 lines
3.3 KiB
Bash
Executable File
86 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
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set -o errexit
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# Mounts boot, state, & data partitions from balenaOS.
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source ./mount-partitions.sh
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# If the legacy /tmp/resin-supervisor exists on the host, a container might
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# already be using to take an update lock, so we symlink it to the new
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# location so that the supervisor can see it
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[ -d "${ROOT_MOUNTPOINT}"/tmp/resin-supervisor ] &&
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([ -d "${ROOT_MOUNTPOINT}"/tmp/balena-supervisor ] || ln -s ./resin-supervisor "${ROOT_MOUNTPOINT}"/tmp/balena-supervisor)
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# Otherwise, if the lockfiles directory doesn't exist
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[ -d "${ROOT_MOUNTPOINT}"/tmp/balena-supervisor ] ||
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mkdir -p "${ROOT_MOUNTPOINT}"/tmp/balena-supervisor
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# If DOCKER_ROOT isn't set then default it
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DOCKER_LIB_PATH="/var/lib/docker"
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if [ -z "${DOCKER_ROOT}" ]; then
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DOCKER_ROOT="${ROOT_MOUNTPOINT}${DOCKER_LIB_PATH}"
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fi
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# Mount the DOCKER_ROOT path equivalent in the container fs
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# this is necessary as long as the supervisor still has support
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# for rsync deltas
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if [ ! -d "${DOCKER_LIB_PATH}" ]; then
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ln -s "${DOCKER_ROOT}" "${DOCKER_LIB_PATH}"
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fi
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# Include self-signed CAs, should they exist
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if [ -n "${BALENA_ROOT_CA}" ]; then
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if [ ! -e '/etc/ssl/certs/balenaRootCA.pem' ]; then
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echo "${BALENA_ROOT_CA}" >/etc/ssl/certs/balenaRootCA.pem
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# Include the balenaRootCA in the system store for services like Docker
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mkdir -p /usr/local/share/ca-certificates
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echo "${BALENA_ROOT_CA}" >/usr/local/share/ca-certificates/balenaRootCA.crt
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update-ca-certificates
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fi
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fi
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# Setup necessary directories for journalctl
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# NOTE: this won't be necessary once the supervisor can update
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# itself, as using the label io.balena.features.journal-logs will
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# achieve the same objective
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if { [ ! -d /run/log/journal ] || [ -L /run/log/journal ]; } && [ -s "${STATE_MOUNTPOINT}"/machine-id ]; then
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# Only enter here if the directory does not exist or the location exists and is a symlink
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# (note that test -d /symlink-to-dir will return true)
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# Create the directory
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mkdir -p /run/log
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# Override the local machine-id
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ln -sf "${ROOT_MOUNTPOINT}"/etc/machine-id /etc/machine-id
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# Remove the original link if it exists to avoid creating deep links
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[ -L /run/log/journal ] && rm /run/log/journal
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# If using persistent logging, the host will the journal under `/var/log/journal`
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# otherwise it will have it under /run/log/journal
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[ -d "${ROOT_MOUNTPOINT}/run/log/journal/$(cat /etc/machine-id)" ] && ln -sf "${ROOT_MOUNTPOINT}"/run/log/journal /run/log/journal
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[ -d "${ROOT_MOUNTPOINT}/var/log/journal/$(cat /etc/machine-id)" ] && ln -sf "${ROOT_MOUNTPOINT}"/var/log/journal /run/log/journal
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fi
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# Mount the host kernel module path onto the expected location
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# We need to do this as busybox doesn't support using a custom location
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if [ ! -d /lib/modules ]; then
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ln -s "${ROOT_MOUNTPOINT}"/lib/modules /lib/modules
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fi
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# Now load the ip6_tables kernel module, so we can do
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# filtering on ipv6 addresses. Don't fail here if the
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# modprobe fails, as this can either be that the module is
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# already loaded or that the kernel module isn't present. In
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# the former case, this is fine for runtime, and in the
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# latter it means that the supervisor will fail later on, so
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# not a problem.
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modprobe ip6_tables || true
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if [ "${LIVEPUSH}" = "1" ]; then
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exec npx nodemon --watch src --watch typings --ignore tests -e js,ts,json \
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--exec node -r ts-node/register/transpile-only src/app.ts
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else
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exec node /usr/src/app/dist/app.js
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fi
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