diff options
| -rw-r--r-- | docs/tutorials/podman_tutorial.md | 4 | ||||
| -rw-r--r-- | libpod/container_internal_linux.go | 16 | ||||
| -rw-r--r-- | libpod/container_internal_linux_test.go | 29 |
3 files changed, 47 insertions, 2 deletions
diff --git a/docs/tutorials/podman_tutorial.md b/docs/tutorials/podman_tutorial.md index 7419f445e..92d0c41b1 100644 --- a/docs/tutorials/podman_tutorial.md +++ b/docs/tutorials/podman_tutorial.md @@ -50,11 +50,11 @@ Note: The -l is a convenience argument for **latest container**. You can also u of -l. ### Testing the httpd server -Now that we have the IP address of the container, we can test the network communication between the host +As we do not have the IP address of the container, we can test the network communication between the host operating system and the container using curl. The following command should display the index page of our containerized httpd server. ```console -curl http://<IP_address>:8080 +curl http://localhost:8080 ``` ### Viewing the container's logs diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go index 847122929..cafa3c642 100644 --- a/libpod/container_internal_linux.go +++ b/libpod/container_internal_linux.go @@ -1,3 +1,4 @@ +//go:build linux // +build linux package libpod @@ -1942,9 +1943,24 @@ func (c *Container) generateHosts(path string) (string, error) { } hosts := string(orig) hosts += c.getHosts() + + hosts = c.appendLocalhost(hosts) + return c.writeStringToRundir("hosts", hosts) } +// based on networking mode we may want to append the localhost +// if there isn't any record for it and also this shoud happen +// in slirp4netns and similar network modes. +func (c *Container) appendLocalhost(hosts string) string { + if !strings.Contains(hosts, "localhost") && + !c.config.NetMode.IsHost() { + hosts += "127.0.0.1\tlocalhost\n::1\tlocalhost\n" + } + + return hosts +} + // appendHosts appends a container's config and state pertaining to hosts to a container's // local hosts file. netCtr is the container from which the netNS information is // taken. diff --git a/libpod/container_internal_linux_test.go b/libpod/container_internal_linux_test.go index 1465ffbea..899f9bffd 100644 --- a/libpod/container_internal_linux_test.go +++ b/libpod/container_internal_linux_test.go @@ -1,3 +1,4 @@ +//go:build linux // +build linux package libpod @@ -7,6 +8,7 @@ import ( "os" "testing" + "github.com/containers/podman/v3/pkg/namespaces" spec "github.com/opencontainers/runtime-spec/specs-go" "github.com/stretchr/testify/assert" ) @@ -68,3 +70,30 @@ func TestGenerateUserGroupEntry(t *testing.T) { } assert.Equal(t, group, "567:x:567:567\n") } + +func TestAppendLocalhost(t *testing.T) { + { + c := Container{ + config: &ContainerConfig{ + ContainerNetworkConfig: ContainerNetworkConfig{ + NetMode: namespaces.NetworkMode("slirp4netns"), + }, + }, + } + + assert.Equal(t, "127.0.0.1\tlocalhost\n::1\tlocalhost\n", c.appendLocalhost("")) + assert.Equal(t, "127.0.0.1\tlocalhost", c.appendLocalhost("127.0.0.1\tlocalhost")) + } + { + c := Container{ + config: &ContainerConfig{ + ContainerNetworkConfig: ContainerNetworkConfig{ + NetMode: namespaces.NetworkMode("host"), + }, + }, + } + + assert.Equal(t, "", c.appendLocalhost("")) + assert.Equal(t, "127.0.0.1\tlocalhost", c.appendLocalhost("127.0.0.1\tlocalhost")) + } +} |