mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-30 04:33:00 +02:00
Joachim Wiberg
1dcbea52b9
On any change to a container network interface we should schedule a restart of the container to activate the changes. This code triggers also at boot, when applying the whole startup-config, which initctl handles by queuing any create/touch events for services. This patch depends on the two previous commtis backporing fixes to Finit's initctl tool and an upgrade of the k8s-logger. Fixes #375 Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
638 lines
14 KiB
Bash
Executable File
638 lines
14 KiB
Bash
Executable File
#!/bin/sh
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all=""
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env=""
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port=""
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force=
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log()
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{
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logger -I $PPID -t container -p local1.notice -- "$*"
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}
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# Unpacks a given oci-archive.tar[.gz] in the current directory. Sanity
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# checks, at least one index.json in the top-level dir of the archive.
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# If there are more index files, this function does not handle them.
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unpack_archive()
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{
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image=$1
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name=$2
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# Supported transports for load and create
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case "$image" in
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oci:*) # Unpacked OCI image
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file=${image#oci:}
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;;
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oci-archive:*) # Packed OCI image, .tar or .tar.gz format
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file=${image#oci-archive:}
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;;
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*) # docker://*, docker-archive:*, or URL
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echo "$image"
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return 0
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;;
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esac
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if [ ! -e "$file" ]; then
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if [ -e "/var/lib/conatainers/oci/$file" ]; then
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file="/var/lib/conatainers/oci/$file"
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elif [ -e "/lib/oci/$file" ]; then
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file="/lib/oci/$file"
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else
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log "Error: cannot find OCI archive $file in search path."
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exit 1
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fi
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fi
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if [ -d "$file" ]; then
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index=$(find "$file" -name index.json)
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if [ -z "$index" ]; then
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log "Error: cannot find index.json in OCI image $file"
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exit 1
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fi
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else
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index=$(tar tf "$file" |grep index.json)
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if [ -z "$index" ]; then
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log "Error: invalid OCI archive, cannot find index.json in $file"
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exit 1
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fi
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[ -n "$quiet" ] || log "Extracting OCI archive $file ..."
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tar xf "$file" || (log "Error: failed unpacking $file in $(pwd)"; exit 1)
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fi
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dir=$(dirname "$index")
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[ -n "$quiet" ] || log "Loading OCI image $dir ..."
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podman load -qi "$dir" >/dev/null
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# Rename image from podman default $dir:latest
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if [ -n "$name" ]; then
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podman tag "$dir" "$name" >/dev/null
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podman rmi "$dir" >/dev/null
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else
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name=$dir
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fi
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echo "$name"
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}
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running()
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{
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run=$(podman inspect "$1" 2>/dev/null |jq .[].State.Running)
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[ "$run" = "true" ] && return 0
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return 1
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}
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# shellcheck disable=SC2086
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create()
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{
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name=$1
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image=$2
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shift 2
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if [ -z "$name" ] || [ -z "$image" ]; then
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echo "Usage:"
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echo " container create NAME IMAGE"
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exit 1
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fi
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# Unpack and load docker-archive/oci/oci-archive, returning image
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# name, or return docker:// URL for download.
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image=$(unpack_archive "$image")
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if [ -z "$logging" ]; then
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logging="--log-driver k8s-file --log-opt path=/run/containers/$name.fifo"
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fi
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args="$args --replace --quiet --cgroup-parent=containers $caps"
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args="$args --restart=$restart --systemd=false --tz=local $privileged"
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args="$args $ro $vol $mount $hostname $entrypoint $env $port $logging"
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pidfn=/run/container:${name}.pid
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[ -n "$quiet" ] || log "---------------------------------------"
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[ -n "$quiet" ] || log "Got name: $name image: $image"
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[ -n "$quiet" ] || log "Got networks: $network"
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if [ -n "$network" ]; then
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for net in $network; do
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args="$args --net=$net"
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done
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for srv in $dns; do
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args="$args --dns=$srv"
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done
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for domain in $search; do
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args="$args --dns-search=$domain"
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done
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else
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args="$args --network=none"
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fi
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# shellcheck disable=SC2048
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log "Calling podman create --name $name --conmon-pidfile=$pidfn $args $image $*"
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if podman create --name "$name" --conmon-pidfile="$pidfn" $args "$image" $*; then
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[ -n "$quiet" ] || log "Successfully created container $name from $image"
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rm -f "/run/containers/env/${name}.env"
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[ -n "$manual" ] || start "$name"
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exit 0
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fi
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log "Error: failed creating container $name, please check the configuration."
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exit 1
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}
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delete()
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{
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name=$1
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image=$2
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if [ -z "$name" ]; then
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echo "Usage:"
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echo " container delete NAME"
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exit 1
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fi
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podman rm -vif "$name" >/dev/null 2>&1
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[ -n "$quiet" ] || log "Container $name has been removed."
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}
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waitfor()
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{
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timeout=$2
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while [ ! -f "$1" ]; do
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_=$((timeout -= 1))
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if [ $timeout -le 0 ]; then
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log "Timeout waiting for $1, aborting!"
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exit 1
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fi
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sleep 1;
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done
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}
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start()
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{
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name=$1
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if running "$name"; then
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[ -n "$quiet" ] || echo "$name: already running."
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return
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fi
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initctl -bq cond set "container:$name"
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# Real work is done by wrap() courtesy of finit sysv emulation
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}
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stop()
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{
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name=$1
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if ! running "$name"; then
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[ -n "$quiet" ] || echo "$name: not running."
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return
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fi
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initctl -bq cond clr "container:$name"
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# Real work is done by wrap() courtesy of finit sysv emulation
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}
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wrap()
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{
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name=$1
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cmd=$2
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podman "$cmd" "$name"
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}
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# Removes network $1 from all containers
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netwrm()
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{
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net=$1
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for c in $(podman ps $all --format "{{.Names}}"); do
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for n in $(podman inspect "$c" |jq -r '.[].NetworkSettings.Networks | keys[]'); do
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if [ "$n" = "$net" ]; then
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podman network disconnect $force "$n" "$c" >/dev/null
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fi
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done
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done
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}
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# Schedule restart of (any) container using network $1 to activate network changes
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netrestart()
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{
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net=$1
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for c in $(podman ps $all --format "{{.Names}}"); do
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for n in $(podman inspect "$c" |jq -r '.[].NetworkSettings.Networks | keys[]'); do
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if [ "$n" = "$net" ]; then
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initctl -nbq touch "container@$c"
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fi
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done
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done
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}
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usage()
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{
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cat <<EOF
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usage:
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container [opt] cmd [arg]
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options:
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-a, --all Show all, of something
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--dns NAMESERVER Set nameserver(s) when creating a container
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--dns-search LIST Set host lookup search list when creating container
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--cap-add CAP Add capability to unprivileged container
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--cap-drop CAP Drop capability, for privileged containter
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-c, --creds USR[:PWD] Credentials to pass to curl -u for remote ops
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-d, --detach Detach a container started with 'run IMG [CMD]'
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-e, --env FILE Environment variables when creating container
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--entrypoint Disable container image's ENTRYPOINT, run cmd + arg
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-f, --force Force operation, e.g. remove
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-h, --help Show this help text
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--hostname NAME Set hostname when creating container
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--net NETWORK Network interface(s) when creating or finding container
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-l, --log-driver DRV Log driver to use
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--log-opt OPT Logging options to log driver
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--log-path PATH Path for k8s-file log pipe
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-m, --mount HOST:DEST Bind mount a read-only file inside a container
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--manual Do not start container automatically after creation
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-n, --name NAME Alternative way of supplying name to start/stop/restart
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--privileged Give container extended privileges
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-p, --publish PORT Publish ports when creating container
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Syntax: [[ip:][hostPort]:]containerPort[/protocol]
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-q, --quiet Quiet operation, called from confd
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-r, --restart POLICY One of "no", "always", or "on-failure:NUM"
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--read-only Do not create a writable layer
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-s, --simple Show output in simplified format
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-v, --volume NAME:PATH Create named volume mounted inside container on PATH
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commands:
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create NAME IMAGE NET Create container NAME using IMAGE with networks NET
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delete [network] NAME Remove container NAME or network NAME from all containers
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exec NAME CMD Run a command inside a container
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find [ifname PID] Find PID of container where '--net IFNAME' currently lives
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or, find the name of our IFNAME inside the container @PID
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help Show this help text
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list [image | oci] List names (only) of containers, images, or OCI archives
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load [NAME | URL] NM Load OCI tarball fileNAME or URL to image NM
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remove IMAGE Remove an (unused) container image
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restart [network] NAME Restart a (crashed) container or container(s) using network
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run NAME [CMD] Run a container interactively, with an optional command
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save IMAGE FILE Save a container image to an OCI tarball FILE[.tar.gz]
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shell Start a shell inside a container
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show [image | volume] Show containers, images, or volumes
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stat Show continuous stats about containers (Ctrl-C aborts)
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start [NAME] Start a container, see -n
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stop [NAME] Stop a container, see -n
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volume [prune] Prune unused volumes
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EOF
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}
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while [ "$1" != "" ]; do
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case $1 in
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-a | --all)
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all="-a"
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;;
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--cap-add)
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shift
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caps="$caps --cap-add=$1"
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;;
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--cap-drop)
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shift
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caps="$caps --cap-drop=$1"
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;;
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-c | --creds)
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shift
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creds="-u $1"
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;;
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-d | --detach)
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detach="-d"
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;;
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--dns)
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shift
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dns="$dns $1"
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;;
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--dns-search)
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shift
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search="$search $1"
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;;
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-e | --env)
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shift
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env="$env --env-file=$1"
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;;
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--entrypoint)
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entrypoint="--entrypoint=\"\""
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;;
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-f | --force)
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force="-f"
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;;
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-h | --help)
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usage
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exit 0
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;;
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--hostname)
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shift
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hostname="--hostname $1"
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;;
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-l | --log-driver)
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shift
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logging=" --log-driver=$1"
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;;
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--log-opt)
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shift
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logging="$logging --log-opt $1"
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;;
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--log-path)
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shift
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logging="$logging --log-opt path=$1"
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log_path="$1"
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;;
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-m | --mount)
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shift
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mount="--mount=$1"
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;;
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--manual)
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manual=true
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;;
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-n | --name)
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shift
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name="$1"
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;;
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--net)
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shift
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if [ -n "$network" ]; then
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network="$network $1"
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else
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network=$1
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fi
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;;
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--privileged)
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privileged="--privileged=true"
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;;
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-p | --publish)
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shift
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port="$port -p $1"
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;;
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-q | --quiet)
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quiet="-q"
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;;
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-r | --restart)
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shift
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restart=$1
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;;
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--read-only)
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ro="--read-only=true"
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;;
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-s | --simple)
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simple=true
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;;
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-v | --volume)
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shift
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vol="$vol -v $1"
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;;
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*)
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break
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;;
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esac
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shift
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done
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cmd=$1
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if [ -n "$cmd" ]; then
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shift
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fi
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case $cmd in
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# Does not work atm., cannot attach to TTY because
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# we monitor 'podman start -ai foo' with Finit.
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# attach)
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# podman attach "$1"
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# ;;
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create)
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[ -n "$quiet" ] || log "Got create args: $*"
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create "$@"
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;;
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delete)
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cmd=$1
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name=$2
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if [ "$cmd" = "network" ] && [ -n "$name" ]; then
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netwrm "$name"
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else
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delete "$@"
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fi
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;;
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exec)
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podman exec -it "$@"
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;;
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find)
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cmd=$1
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pid=$2
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if [ "$cmd" = "ifname" ] && [ -n "$pid" ]; then
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nsenter -t "$pid" -n ip -d -j link | \
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jq --arg ifname "$network" -r '.[] | select(.ifalias==$ifname) | .ifname'
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else
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containers=$(podman ps $all --format "{{.Names}}")
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for c in $containers; do
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json=$(podman inspect "$c")
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nets=$(echo "$json" |jq -r '.[].NetworkSettings.Networks | keys[]' 2>/dev/null)
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for n in $nets; do
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if [ "$network" = "$n" ]; then
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pid=$(echo "$json" | jq .[].State.Pid)
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echo "$pid"
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exit 0
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fi
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done
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done
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fi
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;;
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help)
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usage
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;;
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load)
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url=$1
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name=$2
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# shellcheck disable=SC2086
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if echo "$url" | grep -q "://"; then
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file=$(basename "$url")
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curl -k $creds -Lo "$file" "$url"
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else
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file="$url"
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fi
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# shellcheck disable=SC2086
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name=$(unpack_archive "$file" $name)
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# Show resulting image(s) matching $name
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if [ -n "$name" ]; then
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podman images -n "$name"
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else
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exit 1
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fi
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;;
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ls | list)
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cmd=$1
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[ -n "$cmd" ] && shift
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case $cmd in
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image*)
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podman images $all --format "{{.Repository}}:{{.Tag}}"
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;;
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oci)
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find /lib/oci /var/lib/containers/oci -type f 2>/dev/null
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;;
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*)
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podman ps $all --format "{{.Names}}"
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;;
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esac
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;;
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pull)
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podman pull "$@"
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;;
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remove)
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podman rmi $all $force -i "$1"
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;;
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run)
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img=$1
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cmd=$2
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[ -n "$port" ] || port="-P"
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if [ -n "$cmd" ]; then
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shift 2
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[ -n "$detach" ] || echo "Starting $img ENTRYPOINT $cmd :: use Ctrl-p Ctrl-q to detach"
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podman run -it --rm $detach $port --entrypoint="$cmd" "$img" "$@"
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else
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[ -n "$detach" ] || echo "Starting $img :: use Ctrl-p Ctrl-q to detach"
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podman run -it --rm $detach $port "$img"
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fi
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;;
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save)
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name=$1
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file=$2
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if echo "$file" | grep -q ".gz"; then
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file=${file%%.gz}
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gzip=true
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fi
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if ! echo "$file" | grep -q ".tar"; then
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file=${file}.tar
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gzip=true
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fi
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podman save -o "$file" "$name"
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if [ -s "$file" ] && [ -n "$gzip" ]; then
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gzip "$file"
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fi
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;;
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shell)
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podman exec -it "$1" sh -l
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;;
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show)
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cmd=$1
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[ -n "$cmd" ] && shift
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case $cmd in
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image*)
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if [ -n "$simple" ]; then
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podman images $all --format "{{.Names}} {{.Size}}" \
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| sed 's/\[\(.*\)\] /\1 /g' \
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| awk '{ printf "%-60s %s %s\n", $1, $2, $3}'
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else
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podman images $all
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fi
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;;
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volume*)
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printf "%-20s CONTAINER\n" "VOLUME"
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for v in $(podman volume ls --format "{{.Name}}"); do
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printf "%-20s" "$v"
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podman ps -a --filter volume="$v" --format '{{.Names}}' | sed 's/^/ /'
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done
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;;
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*)
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if [ -n "$simple" ]; then
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podman ps $all --format "{{.ID}} {{.Names}} {{.Image}}" \
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| awk '{ printf "%s %-30s %s\n", $1, $2, $3}'
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else
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podman ps $all
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fi
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;;
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esac
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;;
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start)
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|
if [ -n "$name" ]; then
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wrap "$name" start
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elif [ -n "$1" ]; then
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start "$1"
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else
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usage
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exit 1
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fi
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;;
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restart)
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if [ -n "$name" ]; then
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wrap "$name" restart
|
|
elif [ -n "$1" ]; then
|
|
cmd=$1
|
|
name=$2
|
|
if [ "$cmd" = "network" ] && [ -n "$name" ]; then
|
|
netrestart "$name"
|
|
else
|
|
name=$1
|
|
stop "$name"
|
|
timeout=20
|
|
while running "$name"; do
|
|
_=$((timeoute -= 1))
|
|
if [ $timeout -le 0 ]; then
|
|
log "Timeout waiting for container $1 to stop before restarting it."
|
|
exit 1
|
|
fi
|
|
sleep 1
|
|
done
|
|
start "$name"
|
|
fi
|
|
else
|
|
usage
|
|
exit 1
|
|
fi
|
|
;;
|
|
stop)
|
|
if [ -n "$name" ]; then
|
|
wrap "$name" stop
|
|
elif [ -n "$1" ]; then
|
|
stop "$1"
|
|
else
|
|
usage
|
|
exit 1
|
|
fi
|
|
;;
|
|
stat*)
|
|
podman stats -i 2
|
|
;;
|
|
upgrade)
|
|
img=$(podman inspect "$1" | jq -r .[].ImageName)
|
|
if [ -z "$img" ]; then
|
|
echo "No such container ($1), or invalid ImageName. Cannot upgrade."
|
|
exit 1;
|
|
fi
|
|
if echo "$img" | grep -Eq '^localhost/'; then
|
|
# Likely an OCI archive, or local directory, assume user has updated image.
|
|
file=$(awk '{s=$NF} END{print s}' "/var/lib/containers/active/${1}.sh")
|
|
echo "Upgrading container ${1} with local archive: $file ..."
|
|
else
|
|
podman stop "$1"
|
|
podman pull "$img" || (echo "Failed fetching $img, check your network (settings)."; exit 1)
|
|
fi
|
|
"/var/lib/containers/active/${1}.sh" || (echo "Failed recreating container $1"; exit 1)
|
|
;;
|
|
volume)
|
|
cmd=$1
|
|
[ -n "$cmd" ] && shift
|
|
case $cmd in
|
|
prune)
|
|
podman volume $force prune
|
|
;;
|
|
*)
|
|
false
|
|
;;
|
|
esac
|
|
;;
|
|
*)
|
|
usage
|
|
exit 1
|
|
;;
|
|
esac
|