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path: root/libpod/networking_linux.go
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* Reformat inspect network settingsQi Wang2020-06-23
| | | | | | Reformat ports of inspect network settings to compatible with docker inspect. Close #5380 Signed-off-by: Qi Wang <qiwan@redhat.com>
* Properly follow linked namespace container for statsMatthew Heon2020-06-02
| | | | | | | | | | | | | | | | | | | Podman containers can specify that they get their network namespace from another container. This is automatic in pods, but any container can do it. The problem is that these containers are not guaranteed to have a network namespace of their own; it is perfectly valid to join the network namespace of a --net=host container, and both containers will end up in the host namespace. The code for obtaining network stats did not account for this, and could cause segfaults as a result. Fortunately, the fix is simple - the function we use to get said stats already performs appropriate checks, so we just need to recursively call it. Fixes #5652 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* If possible use the pod name when creating a networkAlban Bedel2020-04-03
| | | | | | | | | | | | | | | When creating a network we pass down a name which end up in the K8S_POD_NAME argument to cni plugins. Currently this name is always filled with the container name, so for pods it is the name of the infra container, not really what one would expect. This mess up with the dnsname plugin as it doesn't receive the pod name in K8S_POD_NAME. To fix this pass the pod name when the container is part of a pod, otherwise use the container name like before. Signed-off-by: Alban Bedel <albeu@free.fr> --- v2: Only call GetPod() when a pod id is set
* Add support for containers.confDaniel J Walsh2020-03-27
| | | | | | | vendor in c/common config pkg for containers.conf Signed-off-by: Qi Wang qiwan@redhat.com Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* podmanv2 container inspectBrent Baude2020-03-26
| | | | | | add ability to inspect a container Signed-off-by: Brent Baude <bbaude@redhat.com>
* slirp: enable seccomp filterGiuseppe Scrivano2020-03-26
| | | | | | | add a check for --enable-seccomp support in slirp4netns. If it is supported, always enable it. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Attempt manual removal of CNI IP allocations on refreshMatthew Heon2020-03-19
| | | | | | | | | | | | | | We previously attempted to work within CNI to do this, without success. So let's do it manually, instead. We know where the files should live, so we can remove them ourselves instead. This solves issues around sudden reboots where containers do not have time to fully tear themselves down, and leave IP address allocations which, for various reasons, are not stored in tmpfs and persist through reboot. Fixes #5433 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* vendor: update github.com/containernetworking/cni to ↵Dan Williams2020-03-06
| | | | | | | | | | | | | | v0.7.2-0.20200304161608-4fae32b84921 Specifically to get: https://github.com/containernetworking/cni/pull/735 6f29b0165883b2b52ccd4dcb937162ea4c86927b intercept netplugin std err But also pulls in some interface name validation and a compatibility fix for configurations that don't set a CNI version. Signed-off-by: Dan Williams <dcbw@redhat.com>
* Add support for multiple CNI networks in podman inspectMatthew Heon2020-02-25
| | | | | | | | | | | | | | | | When inspecting containers, info on CNI networks added to the container by name (e.g. --net=name1) should be displayed separately from the configuration of the default network, in a separate map called Networks. This patch adds this separation, improving our Docker compatibility and also adding the ability to see if a container has more than one IPv4 and IPv6 address and more than one MAC address. Fixes #4907 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* rootless: fix a regression when using -dGiuseppe Scrivano2020-02-18
| | | | | | | | | | | | when using -d and port mapping, make sure the correct fd is injected into conmon. Move the pipe creation earlier as the fd must be known at the time we create the container through conmon. Closes: https://github.com/containers/libpod/issues/5167 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Merge pull request #4853 from mheon/do_not_configure_with_slirpOpenShift Merge Robot2020-01-13
|\ | | | | Do not configure CNI when slirp4netns is requested
| * Do not configure CNI when slirp4netns is requestedMatthew Heon2020-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | Our networking code bakes in a lot of assumptions about how networking should work - that CNI is *always* used with root, and that slirp4netns is *always* used only with rootless. These are not safe assumptions. This fixes one particular issue, which would cause CNI to also be run when slirp4netns was requested as root. Fixes: #4687 Signed-off-by: Matthew Heon <mheon@redhat.com>
* | Add codespell to validate spelling mistakes in code.Daniel J Walsh2020-01-11
|/ | | | | | Fix all errors found by codespell Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* rootlessport: honor ctr.runtime.config.TmpDirAkihiro Suda2020-01-09
| | | | | | Previously, rootlessport was using /var/tmp as the tmp dir. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
* rootless: use RootlessKit port forwarderAkihiro Suda2020-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RootlessKit port forwarder has a lot of advantages over the slirp4netns port forwarder: * Very high throughput. Benchmark result on Travis: socat: 5.2 Gbps, slirp4netns: 8.3 Gbps, RootlessKit: 27.3 Gbps (https://travis-ci.org/rootless-containers/rootlesskit/builds/597056377) * Connections from the host are treated as 127.0.0.1 rather than 10.0.2.2 in the namespace. No UDP issue (#4586) * No tcp_rmem issue (#4537) * Probably works with IPv6. Even if not, it is trivial to support IPv6. (#4311) * Easily extensible for future support of SCTP * Easily extensible for future support of `lxc-user-nic` SUID network RootlessKit port forwarder has been already adopted as the default port forwarder by Rootless Docker/Moby, and no issue has been reported AFAIK. As the port forwarder is imported as a Go package, no `rootlesskit` binary is required for Podman. Fix #4586 May-fix #4559 Fix #4537 May-fix #4311 See https://github.com/rootless-containers/rootlesskit/blob/v0.7.0/pkg/port/builtin/builtin.go Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
* Allow --ip and --mac to be set when joining a CNI netMatthew Heon2019-11-26
| | | | | | | | | | These only conflict when joining more than one network. We can still set a single CNI network and set a static IP and/or static MAC. Fixes #4500 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* podman: add support for specifying MACJakub Filak2019-11-06
| | | | | | | | I basically copied and adapted the statements for setting IP. Closes #1136 Signed-off-by: Jakub Filak <jakub.filak@sap.com>
* vendor: updated ocicni for MAC addressJakub Filak2019-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `go get github.com/cri-o/ocicni@deac903fd99b6c52d781c9f42b8db3af7dcfd00a` I had to fix compilation errors in libpod/networking_linux.go --- ocicni.Networks has changed from string to the structure NetAttachment with the member Name (the former string value) and the member Ifname (optional). I don't think we can make use of Ifname here, so I just map the array of structures to array of strings - e.g. dropping Ifname. --- The function GetPodNetworkStatus no longer returns Result but it returns the wrapper structure NetResult which contains the former Result plus NetAttachment (Network name and Interface name). Again, I don't think we can make use of that information here, so I just added `.Result` to fix the build. --- Issue: #1136 Signed-off-by: Jakub Filak <jakub.filak@sap.com>
* slirp4netns: fix timeoutGiuseppe Scrivano2019-11-04
| | | | | | | | | the pidWaitTimeout is already a Duration so do not multiply it again by time.Millisecond. Closes: https://github.com/containers/libpod/issues/4344 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: if slirp4netns fails, return its outputGiuseppe Scrivano2019-10-29
| | | | | | | | | read the slirp4netns stderr and propagate it in the error when the process fails. Replace: https://github.com/containers/libpod/pull/4338 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* rootless v2 cannot collect network statsbaude2019-10-15
| | | | | | | | | | network statistics cannot be collected for rootless network devices with the current implementation. for now, we return nil so that stats will at least for users. Fixes:#4268 Signed-off-by: baude <bbaude@redhat.com>
* Move OCI runtime implementation behind an interfaceMatthew Heon2019-10-10
| | | | | | | | | | | | For future work, we need multiple implementations of the OCI runtime, not just a Conmon-wrapped runtime matching the runc CLI. As part of this, do some refactoring on the interface for exec (move to a struct, not a massive list of arguments). Also, add 'all' support to Kill and Stop (supported by runc and used a bit internally for removing containers). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* network: add workaround for slirp4netns --enable-sandbox issueGiuseppe Scrivano2019-10-01
| | | | | | add a workaround for https://github.com/rootless-containers/slirp4netns/pull/153 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* rootless: Rearrange setup of rootless containersGabi Beyer2019-09-24
| | | | | | | | | | | | | | | In order to run Podman with VM-based runtimes unprivileged, the network must be set up prior to the container creation. Therefore this commit modifies Podman to run rootless containers by: 1. create a network namespace 2. pass the netns persistent mount path to the slirp4netns to create the tap inferface 3. pass the netns path to the OCI spec, so the runtime can enter the netns Closes #2897 Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
* networking: use --enable-sandbox if availableGiuseppe Scrivano2019-09-16
| | | | | | | | | | | if slirp4netns supports sandboxing, enable it. It automatically creates a new mount namespace where slirp4netns will run and have limited access to the host resources. It needs slirp4netns 0.4.1. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* networking: use firewall pluginGiuseppe Scrivano2019-08-19
| | | | | | | drop the pkg/firewall module and start using the firewall CNI plugin. It requires an updated package for CNI plugins. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Revert "rootless: Rearrange setup of rootless containers"baude2019-08-06
| | | | | | This reverts commit 80dcd4bebcdc8e280f6b43228561d09c194c328b. Signed-off-by: baude <bbaude@redhat.com>
* rootless: Rearrange setup of rootless containersGabi Beyer2019-07-30
| | | | | | | | | | | | | | | In order to run Podman with VM-based runtimes unprivileged, the network must be set up prior to the container creation. Therefore this commit modifies Podman to run rootless containers by: 1. create a network namespace 2. pass the netns persistent mount path to the slirp4netns to create the tap inferface 3. pass the netns path to the OCI spec, so the runtime can enter the netns Closes #2897 Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
* golangci-lint pass number 2baude2019-07-11
| | | | | | clean up and prepare to migrate to the golangci-linter Signed-off-by: baude <bbaude@redhat.com>
* first pass of corrections for golangci-lintbaude2019-07-10
| | | | Signed-off-by: baude <bbaude@redhat.com>
* code cleanupbaude2019-07-08
| | | | | | clean up code identified as problematic by golands inspection Signed-off-by: baude <bbaude@redhat.com>
* Vendor latest OCICNI versionSascha Grunert2019-07-03
| | | | | | | | This is needed for dual stack IPv6 support within CRI-O. Because the API changed within OCICNI, we have to adapt the internal linux networking as well. Signed-off-by: Sascha Grunert <sgrunert@suse.com>
* Begin adding support for multiple OCI runtimesMatthew Heon2019-06-19
| | | | | | | | | | | | | Allow Podman containers to request to use a specific OCI runtime if multiple runtimes are configured. This is the first step to properly supporting containers in a multi-runtime environment. The biggest changes are that all OCI runtimes are now initialized when Podman creates its runtime, and containers now use the runtime requested in their configuration (instead of always the default runtime). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Begin to break up pkg/inspectMatthew Heon2019-06-03
| | | | | | | | | | Let's put inspect structs where they're actually being used. We originally made pkg/inspect to solve circular import issues. There are no more circular import issues. Image structs remain for now, I'm focusing on container inspect. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* network: raise a clearer error when using CNIGiuseppe Scrivano2019-05-14
| | | | | | | | | print a clearer error message when an unprivileged user attempts to create a network using CNI. Closes: https://github.com/containers/libpod/issues/3118 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Integration test tweaksbaude2019-03-15
| | | | | | | Wait for more than 1 second on podman info to complete. Also, add clarification to why slirp fails. Signed-off-by: baude <bbaude@redhat.com>
* rootless: fix CI regression when using slirp4netnsGiuseppe Scrivano2019-03-14
| | | | | | | | | | Older versions of slirp4netns do not have the --disable-host-loopback flag. Remove the check once we are sure the updated version is available everywhere. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* slirp4netns: use --disable-host-loopbackGiuseppe Scrivano2019-03-14
| | | | | | Closes: https://github.com/containers/libpod/issues/2642 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* slirp4netns: set mtu to 65520Giuseppe Scrivano2019-03-14
| | | | | | | | | | it improves significantly the performance of the slirp4netns network: https://github.com/rootless-containers/slirp4netns/tree/777bdccceffa5bee38dbfd9eefc06628cc160ff6#iperf3-netns---host Closes: https://github.com/containers/libpod/issues/1732 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: allow to configure path to the network-cmd binaryGiuseppe Scrivano2019-03-11
| | | | | | | | | | | | | allow to configure the path to the network-cmd binary, either via an option flag --network-cmd-path or through the libpod.conf configuration file. This is currently used to customize the path to the slirp4netns binary. Closes: https://github.com/containers/libpod/issues/2506 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* rootless: support port redirection from the hostGiuseppe Scrivano2019-01-19
| | | | | | | | | | add support for ports redirection from the host. It needs slirp4netns v0.3.0-alpha.1. Closes: https://github.com/containers/libpod/issues/2081 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Use existing interface to request IP address during restoreAdrian Reber2019-01-09
| | | | | | | | | | | | | | | | | | The initial implementation to request the same IP address for a container during a restore was based on environment variables influencing CNI. With this commit the IP address selection switches to Podman's internal static IP API. This commit does a comment change in libpod/container_easyjson.go to avoid unnecessary re-generation of libpod/container_easyjson.go during build as this fails in CI. The reason for this is that make sees that libpod/container_easyjson.go needs to be re-created. The commit, however, only changes a part of libpod/container.go which is marked as 'ffjson: skip'. Signed-off-by: Adrian Reber <areber@redhat.com>
* Merge pull request #1789 from mheon/fix_add_hosts_testOpenShift Merge Robot2018-11-09
|\ | | | | Accurately update state if prepare() partially fails
| * Accurately update state if prepare() partially failsMatthew Heon2018-11-08
| | | | | | | | | | | | | | | | | | We are seeing some issues where, when part of prepare() fails (originally noticed due to a bad static IP), the other half does not successfully clean up, and the state can be left in a bad place (not knowing about an active SHM mount for example). Signed-off-by: Matthew Heon <mheon@redhat.com>
* | correct assignment of networkStatusbaude2018-11-08
|/ | | | | | | | | | once we changed configureNetNS to return a result beyond an error, we need to make sure that we used locals instead of ctr attributes when determining networks. Resolves #1752 Signed-off-by: baude <bbaude@redhat.com>
* rootless: avoid hang on failed slirp4netnsGiuseppe Scrivano2018-10-31
| | | | | | | | If for any reason slirp4netns fails at startup, podman waits indefinitely. Check every second if the process is still running so that we avoid to hang. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* run prepare in parallelbaude2018-10-25
| | | | | | | run prepare() -- which consists of creating a network namespace and mounting the container image is now run in parallel. This saves 25-40ms. Signed-off-by: baude <bbaude@redhat.com>
* Temporary commit to swap branchesMatthew Heon2018-10-11
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Replace existing iptables handler with firewall codeMatthew Heon2018-09-10
| | | | | | | | | | | | Use the new firewall code vendored from CNI to replace the existing iptables rule addition handler we had in place. This adds proper support for firewalld and should be much better at interacting with the firewall. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1431 Approved by: baude
* Fixed segfault in stats where container had netNS none or from containerhaircommander2018-08-21
| | | | | | | Signed-off-by: haircommander <pehunt@redhat.com> Closes: #1306 Approved by: rhatdan
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