#!/usr/bin/env bats -*- bats -*- # # Test podman local networking # load helpers @test "podman network - basic tests" { heading="*NETWORK*ID*NAME*DRIVER*" 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: $output" fi } # Copied from tsweeney's https://github.com/containers/podman/issues/4827 @test "podman networking: port on localhost" { random_1=$(random_string 30) random_2=$(random_string 30) HOST_PORT=$(random_free_port) 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" \ -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"' # 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" { for cidr in "" "$(random_rfc1918_subnet).0/24"; do myport=$(random_free_port 52000-52999) 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" wait_for_output "listening on .*:$myport .*" $cid # emit random string, and check it teststring=$(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 ${CIDR}.100/24 \+" "container should have slirp4netns cidr+100 assigned to interface" } # "network create" now works rootless, with the help of a special container @test "podman network create" { # Deliberately use a fixed port, not random_open_port, because of #10806 myport=54322 local mynetname=testnet-$(random_string 10) local mysubnet=$(random_rfc1918_subnet) run_podman network create --subnet "${mysubnet}.0/24" $mynetname is "$output" "$mynetname" "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" # check that dns is working inside the container run_podman exec $cid nslookup google.com # emit random string, and check it teststring=$(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: network name $mynetname already used: network already exists" \ "Trying to create an already-existing network" run_podman rm -t 0 -f $cid run_podman network rm $mynetname run_podman 1 network rm -f $mynetname } @test "podman network reload" { skip_if_remote "podman network reload does not have remote support" random_1=$(random_string 30) HOST_PORT=$(random_free_port) SERVER=http://127.0.0.1:$HOST_PORT # Create a test file with random content INDEX1=$PODMAN_TMPDIR/hello.txt echo $random_1 > $INDEX1 # use default network local netname=podman # Bind-mount this file with a different name to a container running httpd run_podman run -d --name myweb -p "$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}}" ip1="$output" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" mac1="$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 match container ID" # check that we still have the same mac and ip run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").IPAddress}}" is "$output" "$ip1" "IP address changed after podman network reload" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" is "$output" "$mac1" "MAC address changed after podman network reload" # check that we can still curl run curl -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt" # create second network netname2=testnet-$(random_string 10) # TODO add --ipv6 and uncomment the ipv6 checks below once cni plugins 1.0 is available on ubuntu CI VMs. run_podman network create $netname2 is "$output" "$netname2" "output of 'network create'" # connect the container to the second network run_podman network connect $netname2 $cid run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").IPAddress}}" ip2="$output" #run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").GlobalIPv6Address}}" #is "$output" "fd.*:.*" "IPv6 address should start with fd..." #ipv6="$output" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").MacAddress}}" mac2="$output" # make sure --all is working and that this # cmd also works if the iptables still exists run_podman network reload --all is "$output" "$cid" "Output does match container ID" # check that both network keep there ip and mac run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").IPAddress}}" is "$output" "$ip1" "IP address changed after podman network reload ($netname)" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" is "$output" "$mac1" "MAC address changed after podman network reload ($netname)" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").IPAddress}}" is "$output" "$ip2" "IP address changed after podman network reload ($netname2)" #run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").GlobalIPv6Address}}" #is "$output" "$ipv6" "IPv6 address changed after podman network reload ($netname2)" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").MacAddress}}" is "$output" "$mac2" "MAC address changed after podman network reload ($netname2)" # 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 -t 0 -f $cid # test that we cannot remove the default network run_podman 125 network rm -t 0 -f $netname is "$output" "Error: default network $netname cannot be removed" "Remove default network" run_podman network rm -t 0 -f $netname2 } @test "podman rootless cni adds /usr/sbin to PATH" { is_rootless || skip "only meaningful for rootless" local mynetname=testnet-$(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 -t 0 -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" "$netname" "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 -t 0 -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" "$netname" "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 -t 0 -f $netname } # Test for https://github.com/containers/podman/issues/10052 @test "podman network connect/disconnect with port forwarding" { random_1=$(random_string 30) HOST_PORT=$(random_free_port) SERVER=http://127.0.0.1:$HOST_PORT # Create a test file with random content INDEX1=$PODMAN_TMPDIR/hello.txt echo $random_1 > $INDEX1 local netname=testnet-$(random_string 10) run_podman network create $netname is "$output" "$netname" "output of 'network create'" local netname2=testnet2-$(random_string 10) run_podman network create $netname2 is "$output" "$netname2" "output of 'network create'" # First, run a container in background to ensure that the rootless cni ns # is not destroyed after network disconnect. run_podman run -d --network $netname $IMAGE top background_cid=$output # Run a httpd container on first network with exposed port run_podman run -d -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 # Verify http contents: curl from localhost run curl --max-time 3 -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").IPAddress}}" ip="$output" run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" mac="$output" # check network alias for container short id run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").Aliases}}" is "$output" "[${cid:0:12}]" "short container id in network aliases" run_podman network disconnect $netname $cid # check that we cannot curl (timeout after 3 sec) run curl --max-time 3 -s $SERVER/index.txt if [ "$status" -eq 0 ]; then die "curl did not fail, it should have timed out or failed with non zero exit code" fi run_podman network connect $netname $cid # curl should work again run curl --max-time 3 -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt should work again" # check that we have a new ip and mac # if the ip is still the same this whole test turns into a nop run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").IPAddress}}" if [[ "$output" == "$ip" ]]; then die "IP address did not change after podman network disconnect/connect" fi run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname\").MacAddress}}" if [[ "$output" == "$mac" ]]; then die "MAC address did not change after podman network disconnect/connect" fi # connect a second network run_podman network connect $netname2 $cid # check network2 alias for container short id run_podman inspect $cid --format "{{(index .NetworkSettings.Networks \"$netname2\").Aliases}}" is "$output" "[${cid:0:12}]" "short container id in network aliases" # curl should work run curl --max-time 3 -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt should work" # disconnect the first network run_podman network disconnect $netname $cid # curl should still work run curl --max-time 3 -s $SERVER/index.txt is "$output" "$random_1" "curl 127.0.0.1:/index.txt should still work" # cleanup run_podman rm -t 0 -f $cid $background_cid run_podman network rm -t 0 -f $netname $netname2 } @test "podman network after restart" { random_1=$(random_string 30) HOST_PORT=$(random_free_port) SERVER=http://127.0.0.1:$HOST_PORT # Create a test file with random content INDEX1=$PODMAN_TMPDIR/hello.txt echo $random_1 > $INDEX1 local netname=testnet-$(random_string 10) run_podman network create $netname is "$output" "$netname" "output of 'network create'" for network in "slirp4netns" "$netname"; do # Start container with the restart always policy run_podman run -d --name myweb -p "$HOST_PORT:80" \ --restart always \ --network $network \ -v $INDEX1:/var/www/index.txt:Z \ -w /var/www \ $IMAGE /bin/busybox-extras httpd -f -p 80 cid=$output # 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}}" $cid # 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 auto restart" run_podman restart $cid # 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 podman restart" run_podman rm -t 0 -f $cid done # Cleanup network run_podman network rm -t 0 -f $netname } # vim: filetype=sh