mirror of
https://github.com/weaveworks/scope.git
synced 2026-03-02 17:50:39 +00:00
133 lines
4.1 KiB
Bash
Executable File
133 lines
4.1 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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usage() {
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echo "Usage:"
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echo "scope launch [<peer> ...]"
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echo "scope stop"
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echo "scope command"
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echo
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echo "scope <peer> is of the form <ip_address_or_fqdn>[:<port>]"
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exit 1
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}
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SCRIPT_VERSION="(unreleased version)"
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if [ "$SCRIPT_VERSION" = "(unreleased version)" ] ; then
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IMAGE_VERSION=latest
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else
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IMAGE_VERSION=$SCRIPT_VERSION
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fi
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IMAGE_VERSION=${VERSION:-$IMAGE_VERSION}
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SCOPE_IMAGE_NAME=weaveworks/scope
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SCOPE_IMAGE=$SCOPE_IMAGE_NAME:$IMAGE_VERSION
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SCOPE_CONTAINER_NAME=weavescope
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IP_REGEXP="[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
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IP_ADDR_CMD="find /sys/class/net -type l | xargs -n1 basename | grep -vE 'docker|veth|lo' | \
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xargs -n1 ip addr show | grep inet | awk '{ print \$2 }' | grep -oE '$IP_REGEXP'"
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WEAVESCOPE_DOCKER_ARGS=${WEAVESCOPE_DOCKER_ARGS:-}
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[ $# -gt 0 ] || usage
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COMMAND=$1
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shift 1
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# - The image embeds the weave script & Docker 1.3.1 client
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# - Docker versions prior to 1.5.0 do not support --pid=host
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MIN_DOCKER_VERSION=1.5.0
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check_docker_version() {
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if ! DOCKER_VERSION=$(docker -v | sed -n 's%^Docker version \([0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}\).*$%\1%p') ||
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[ -z "$DOCKER_VERSION" ] ; then
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echo "ERROR: Unable to parse docker version" >&2
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exit 1
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fi
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DOCKER_VERSION_MAJOR=$(echo "$DOCKER_VERSION" | cut -d. -f 1)
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DOCKER_VERSION_MINOR=$(echo "$DOCKER_VERSION" | cut -d. -f 2)
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DOCKER_VERSION_PATCH=$(echo "$DOCKER_VERSION" | cut -d. -f 3)
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MIN_DOCKER_VERSION_MAJOR=$(echo "$MIN_DOCKER_VERSION" | cut -d. -f 1)
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MIN_DOCKER_VERSION_MINOR=$(echo "$MIN_DOCKER_VERSION" | cut -d. -f 2)
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MIN_DOCKER_VERSION_PATCH=$(echo "$MIN_DOCKER_VERSION" | cut -d. -f 3)
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if [ \( "$DOCKER_VERSION_MAJOR" -lt "$MIN_DOCKER_VERSION_MAJOR" \) -o \
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\( "$DOCKER_VERSION_MAJOR" -eq "$MIN_DOCKER_VERSION_MAJOR" -a \
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\( "$DOCKER_VERSION_MINOR" -lt "$MIN_DOCKER_VERSION_MINOR" -o \
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\( "$DOCKER_VERSION_MINOR" -eq "$MIN_DOCKER_VERSION_MINOR" -a \
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\( "$DOCKER_VERSION_PATCH" -lt "$MIN_DOCKER_VERSION_PATCH" \) \) \) \) ] ; then
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echo "ERROR: scope requires Docker version $MIN_DOCKER_VERSION or later; you are running $DOCKER_VERSION" >&2
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exit 1
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fi
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}
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# Check that a container named $1 with image $2 is not running
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check_not_running() {
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case $(docker inspect --format='{{.State.Running}} {{.Config.Image}}' $1 2>/dev/null) in
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"true $2")
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echo "$1 is already running." >&2
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exit 1
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;;
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"true $2:"*)
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echo "$1 is already running." >&2
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exit 1
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;;
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"false $2")
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docker rm $1 >/dev/null
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;;
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"false $2:"*)
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docker rm $1 >/dev/null
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;;
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true*)
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echo "Found another running container named '$1'. Aborting." >&2
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exit 1
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;;
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false*)
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echo "Found another container named '$1'. Aborting." >&2
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exit 1
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;;
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esac
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}
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launch_command() {
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echo docker run --privileged -d --name=$SCOPE_CONTAINER_NAME --net=host --pid=host \
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-v /var/run/docker.sock:/var/run/docker.sock \
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$WEAVESCOPE_DOCKER_ARGS $SCOPE_IMAGE --probe.docker true "$@"
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}
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check_docker_version
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case "$COMMAND" in
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command)
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launch_command "$@"
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;;
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launch)
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check_not_running $SCOPE_CONTAINER_NAME $SCOPE_IMAGE_NAME
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docker rm -f $SCOPE_CONTAINER_NAME >/dev/null 2>&1 || true
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CONTAINER=$($(launch_command "$@"))
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echo $CONTAINER
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if ! echo "$@" | grep -E "\-\-no\-app|\-\-service\-token" 1>/dev/null; then
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IP_ADDRS=$(docker run --rm --net=host --entrypoint /bin/sh $SCOPE_IMAGE -c "$IP_ADDR_CMD")
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echo "Weave Scope is reachable at the following URL(s):" >&2
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for ip in $IP_ADDRS; do
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echo " * http://$ip:4040/" >&2
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done
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fi
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;;
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stop)
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[ $# -eq 0 ] || usage
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if ! docker stop $SCOPE_CONTAINER_NAME >/dev/null 2>&1 ; then
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echo "Weave Scope is not running." >&2
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fi
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;;
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*)
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echo "Unknown scope command '$COMMAND'" >&2
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usage
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;;
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esac
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