#!/usr/bin/env bats -*- bats -*- # # Test podman local networking # load helpers @test "podman network - basic tests" { heading="*NETWORK*ID*NAME*VERSION*PLUGINS*" run_podman network ls if [[ ${output} != ${heading} ]]; then die "network ls expected heading is not available" fi run_podman network ls --noheading if [[ ${output} = ${heading} ]]; then die "network ls --noheading did not remove heading: $output" fi } # Copied from tsweeney's https://github.com/containers/podman/issues/4827 @test "podman networking: port on localhost" { skip_if_remote "FIXME: reevaluate this one after #7360 is fixed" random_1=$(random_string 30) random_2=$(random_string 30) HOST_PORT=8080 SERVER=http://127.0.0.1:$HOST_PORT # Create a test file with random content INDEX1=$PODMAN_TMPDIR/hello.txt echo $random_1 > $INDEX1 # Bind-mount this file with a different name to a container running httpd run_podman run -d --name myweb -p "$HOST_PORT:80" \ --restart always \ -v $INDEX1:/var/www/index.txt:Z \ -w /var/www \ $IMAGE /bin/busybox-extras httpd -f -p 80 cid=$output # In that container, create a second file, using exec and redirection run_podman exec -i myweb sh -c "cat > index2.txt" <<<"$random_2" # ...verify its contents as seen from container. run_podman exec -i myweb cat /var/www/index2.txt is "$output" "$random_2" "exec cat index2.txt" # Verify http contents: curl from localhost run curl -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt" run curl -s $SERVER/index2.txt is "$output" "$random_2" "curl 127.0.0.1:/index2.txt" # Verify http contents: wget from a second container run_podman run --rm --net=host $IMAGE wget -qO - $SERVER/index.txt is "$output" "$random_1" "podman wget /index.txt" run_podman run --rm --net=host $IMAGE wget -qO - $SERVER/index2.txt is "$output" "$random_2" "podman wget /index2.txt" # Tests #4889 - two-argument form of "podman ports" was broken run_podman port myweb is "$output" "80/tcp -> 0.0.0.0:$HOST_PORT" "port " run_podman port myweb 80 is "$output" "0.0.0.0:$HOST_PORT" "port 80" run_podman port myweb 80/tcp is "$output" "0.0.0.0:$HOST_PORT" "port 80/tcp" run_podman 125 port myweb 99/tcp is "$output" 'Error: failed to find published port "99/tcp"' # Tests #10310: podman will restart slirp4netns on container restart run_podman container inspect --format "{{.State.Pid}}" $cid pid=$output # Kill the process; podman restart policy will bring up a new container. # -9 is crucial: busybox httpd ignores all other signals. kill -9 $pid # Wait for process to exit retries=30 while kill -0 $pid; do sleep 0.5 retries=$((retries - 1)) if [[ $retries -eq 0 ]]; then die "Process $pid (container $cid) refused to die" fi done # Wait for container to restart retries=20 while :;do run_podman container inspect --format "{{.State.Pid}}" myweb # pid is 0 as long as the container is not running if [[ $output -ne 0 ]]; then if [[ $output == $pid ]]; then die "This should never happen! Restarted container has same PID ($output) as killed one!" fi break fi sleep 0.5 retries=$((retries - 1)) if [[ $retries -eq 0 ]]; then die "Timed out waiting for container to restart" fi done # Verify http contents again: curl from localhost # Use retry since it can take a moment until the new container is ready run curl --retry 2 -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt after restart" # Clean up run_podman stop -t 1 myweb run_podman rm myweb } # Issue #5466 - port-forwarding doesn't work with this option and -d @test "podman networking: port with --userns=keep-id" { # FIXME: randomize port, and create second random host port myport=54321 for cidr in "" "$(random_rfc1918_subnet).0/24"; do myport=$(( myport + 1 )) if [[ -z $cidr ]]; then # regex to match that we are in 10.X subnet match="10\..*" else # Issue #9828 make sure a custom slir4netns cidr also works network_arg="--network slirp4netns:cidr=$cidr" # slirp4netns interface ip is always .100 match="${cidr%.*}.100" fi # Container will exit as soon as 'nc' receives input # We use '-n -v' to give us log messages showing an incoming connection # and its IP address; the purpose of that is guaranteeing that the # remote IP is not 127.0.0.1 (podman PR #9052). # We could get more parseable output by using $NCAT_REMOTE_ADDR, # but busybox nc doesn't support that. run_podman run -d --userns=keep-id $network_arg -p 127.0.0.1:$myport:$myport \ $IMAGE nc -l -n -v -p $myport cid="$output" # emit random string, and check it teststring=$(random_string 30) echo "$teststring" | nc 127.0.0.1 $myport run_podman logs $cid # Sigh. We can't check line-by-line, because 'nc' output order is # unreliable. We usually get the 'connect to' line before the random # string, but sometimes we get it after. So, just do substring checks. is "$output" ".*listening on \[::\]:$myport .*" "nc -v shows right port" # This is the truly important check: make sure the remote IP is not 127.X. is "$output" \ ".*connect to \[::ffff:$match*\]:$myport from \[::ffff:$match\]:.*" \ "nc -v shows remote IP address is not 127.0.0.1" is "$output" ".*${teststring}.*" "test string received on container" # Clean up run_podman wait $cid run_podman rm $cid done } @test "podman run with slirp4ns assigns correct addresses to /etc/hosts" { CIDR="$(random_rfc1918_subnet)" local conname=con-$(random_string 10) run_podman run --rm --network slirp4netns:cidr="${CIDR}.0/24" \ --name $conname --hostname $conname $IMAGE cat /etc/hosts is "$output" ".*${CIDR}.2 host.containers.internal" "host.containers.internal should be the cidr+2 address" is "$output" ".*${CIDR}.100 $conname $conname" "$conname should be the cidr+100 address" } @test "podman run with slirp4ns adds correct dns address to resolv.conf" { CIDR="$(random_rfc1918_subnet)" run_podman run --rm --network slirp4netns:cidr="${CIDR}.0/24" \ $IMAGE grep "${CIDR}" /etc/resolv.conf is "$output" "nameserver ${CIDR}.3" "resolv.conf should have slirp4netns cidr+3 as a nameserver" } @test "podman run with slirp4ns assigns correct ip address container" { CIDR="$(random_rfc1918_subnet)" run_podman run --rm --network slirp4netns:cidr="${CIDR}.0/24" \ $IMAGE sh -c "ip address | grep ${CIDR}" is "$output" ".*inet ${CIDR}.100/24 \+" "container should have slirp4netns cidr+100 assigned to interface" } # "network create" now works rootless, with the help of a special container @test "podman network create" { myport=54322 local mynetname=testnet-$(random_string 10) local mysubnet=$(random_rfc1918_subnet) run_podman network create --subnet "${mysubnet}.0/24" $mynetname is "$output" ".*/cni/net.d/$mynetname.conflist" "output of 'network create'" # (Assert that output is formatted, not a one-line blob: #8011) run_podman network inspect $mynetname if [[ "${#lines[*]}" -lt 5 ]]; then die "Output from 'pod inspect' is only ${#lines[*]} lines; see #8011" fi run_podman run --rm --network $mynetname $IMAGE ip a is "$output" ".* inet ${mysubnet}\.2/24 brd ${mysubnet}\.255 " \ "sdfsdf" run_podman run -d --network $mynetname -p 127.0.0.1:$myport:$myport \ $IMAGE nc -l -n -v -p $myport cid="$output" # emit random string, and check it teststring=$(random_string 30) echo "$teststring" | nc 127.0.0.1 $myport run_podman logs $cid # Sigh. We can't check line-by-line, because 'nc' output order is # unreliable. We usually get the 'connect to' line before the random # string, but sometimes we get it after. So, just do substring checks. is "$output" ".*listening on \[::\]:$myport .*" "nc -v shows right port" # This is the truly important check: make sure the remote IP is # in the 172.X range, not 127.X. is "$output" \ ".*connect to \[::ffff:172\..*\]:$myport from \[::ffff:172\..*\]:.*" \ "nc -v shows remote IP address in 172.X space (not 127.0.0.1)" is "$output" ".*${teststring}.*" "test string received on container" # Cannot create network with the same name run_podman 125 network create $mynetname is "$output" "Error: the network name $mynetname is already used" \ "Trying to create an already-existing network" run_podman rm $cid run_podman network rm $mynetname run_podman 1 network rm $mynetname } @test "podman network reload" { skip_if_remote "podman network reload does not have remote support" random_1=$(random_string 30) HOST_PORT=12345 SERVER=http://127.0.0.1:$HOST_PORT # Create a test file with random content INDEX1=$PODMAN_TMPDIR/hello.txt echo $random_1 > $INDEX1 # use default network for root local netname=podman # for rootless we have to create a custom network since there is no default network if is_rootless; then netname=testnet-$(random_string 10) run_podman network create $netname is "$output" ".*/cni/net.d/$netname.conflist" "output of 'network create'" fi # Bind-mount this file with a different name to a container running httpd run_podman run -d --name myweb -p "$HOST_PORT:80" \ --network $netname \ -v $INDEX1:/var/www/index.txt:Z \ -w /var/www \ $IMAGE /bin/busybox-extras httpd -f -p 80 cid=$output run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").IPAddress}}" ip="$output" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" mac="$output" # Verify http contents: curl from localhost run curl -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt" # rootless cannot modify iptables if ! is_rootless; then # flush the CNI iptables here run iptables -t nat -F CNI-HOSTPORT-DNAT # check that we cannot curl (timeout after 5 sec) run timeout 5 curl -s $SERVER/index.txt if [ "$status" -ne 124 ]; then die "curl did not timeout, status code: $status" fi fi # reload the network to recreate the iptables rules run_podman network reload $cid is "$output" "$cid" "Output does not match container ID" # check that we still have the same mac and ip run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").IPAddress}}" is "$output" "$ip" "IP address changed after podman network reload" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" is "$output" "$mac" "MAC address changed after podman network reload" # check that we can still curl run curl -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt" # make sure --all is working and that this # cmd also works if the iptables still exists run_podman network reload --all is "$output" "$cid" "Output does not match container ID" # check that we can still curl run curl -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt" # cleanup the container run_podman rm -f $cid if is_rootless; then run_podman network rm -f $netname fi } @test "podman rootless cni adds /usr/sbin to PATH" { is_rootless || skip "only meaningful for rootless" local mynetname=testnet-$(random_string 10) run_podman network create $mynetname # Test that rootless cni adds /usr/sbin to $PATH # iptables is located under /usr/sbin and is needed for the CNI plugins. # Debian doesn't add /usr/sbin to $PATH for rootless users so we have to add it. PATH=/usr/local/bin:/usr/bin run_podman run --rm --network $mynetname $IMAGE ip addr is "$output" ".*eth0.*" "Interface eth0 not found in ip addr output" run_podman network rm -f $mynetname } @test "podman ipv6 in /etc/resolv.conf" { ipv6_regex='([0-9A-Fa-f]{0,4}:){2,7}([0-9A-Fa-f]{0,4})(%\w+)?' # Make sure to read the correct /etc/resolv.conf file in case of systemd-resolved. resolve_file=$(readlink -f /etc/resolv.conf) if [[ "$resolve_file" == "/run/systemd/resolve/stub-resolv.conf" ]]; then resolve_file="/run/systemd/resolve/resolv.conf" fi # If the host doesn't have an ipv6 in resolv.conf skip this test. # We should never modify resolv.conf on the host. if ! grep -E "$ipv6_regex" "$resolve_file"; then skip "This test needs an ipv6 nameserver in $resolve_file" fi # ipv4 slirp run_podman run --rm --network slirp4netns:enable_ipv6=false $IMAGE cat /etc/resolv.conf if grep -E "$ipv6_regex" <<< $output; then die "resolv.conf contains a ipv6 nameserver" fi # ipv6 slirp run_podman run --rm --network slirp4netns:enable_ipv6=true $IMAGE cat /etc/resolv.conf # "is" does not like the ipv6 regex if ! grep -E "$ipv6_regex" <<< $output; then die "resolv.conf does not contain a ipv6 nameserver" fi # ipv4 cni local mysubnet=$(random_rfc1918_subnet) local netname=testnet-$(random_string 10) run_podman network create --subnet $mysubnet.0/24 $netname is "$output" ".*/cni/net.d/$netname.conflist" "output of 'network create'" run_podman run --rm --network $netname $IMAGE cat /etc/resolv.conf if grep -E "$ipv6_regex" <<< $output; then die "resolv.conf contains a ipv6 nameserver" fi run_podman network rm -f $netname # ipv6 cni mysubnet=fd00:4:4:4:4::/64 netname=testnet-$(random_string 10) run_podman network create --subnet $mysubnet $netname is "$output" ".*/cni/net.d/$netname.conflist" "output of 'network create'" run_podman run --rm --network $netname $IMAGE cat /etc/resolv.conf # "is" does not like the ipv6 regex if ! grep -E "$ipv6_regex" <<< $output; then die "resolv.conf does not contain a ipv6 nameserver" fi run_podman network rm -f $netname } # vim: filetype=sh