---
title: Install ovs-stat on CentOS using the Snap Store | Snapcraft
description: Get the latest version of ovs-stat for on CentOS - Create a sysfs-style
  representation of an Open vSwitch switch.
url: https://snapcraft.io/install/ovs-stat/centos
---

[Canonical Snapcraft](https://snapcraft.io/)

# Install ovs-stat on **CentOS**

# ovs-stat

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[Install](https://snapcraft.io/install/ovs-stat/centos#install)

#### Create a sysfs-style representation of an Open vSwitch switch.

Organise Openvswitch switch contents - bridges, ports, flows etc - into a filesystem structure to make it easy to query either using built-in commands or conventional tools like find and grep. Built-in tools exist to query Openstack and build ovs-appctl ofproto/trace commands.

Use ovs-stat on a host running openvswitch or a sosreport containing ovs data (requires openvswitch and networking plugin output). The result is a "dataset" - a sysfs-style representation of the switch - along with a summary of key attributes. This structure can then be queried manually or by using the built-in queries provided. It can also be viewed as a tree using the --tree command or exported as a tarball. Each dataset is keyed by hostname so that you can build a catalog of datasets from multiple hosts to allow searching across them.

**Install:**

NOTE: a recent version of snapd is needed to get latest support for ovs interface hence why we use the snap version since distro apt package may not be sufficient.

`sudo snap install ovs-stat`

`sudo snap connect ovs-stat:openvswitch`

`sudo snap connect ovs-stat:network-control`

NOTE: the above interfaces are needed for a live ovs. If analysing sosreport data and your sosreport lives on a separate/remote filesystem you only need the following:

`sudo snap connect ovs-stat:removable-media`

**Usage Examples:**

NOTE: because running commands against an openvswitch is typically root-only and because a strictly confined snap can only access the $HOME of the current user, we need to use a location outside $HOME such as /tmp so that the snap can access the path as root.

NOTE: because this is a snap, /tmp/results is converted to /tmp/snap.ovs-stat/tmp/results under the hood

Create dataset from local host and prints summary

`sudo ovs-stat`

Display an existing dataset using tree command

`sudo ovs-stat -p /tmp/results --tree`

Create dataset from sosreport. note that we don't use sudo for this.`

`ovs-stat -p /tmp/results /path/to/sosreport`

Using a path (-p) that contains an existing dataset will switch to read-only mode and will not clobber existing data. To refresh an existing dataset you will need to use --force.

Create dataset from local host and include openstack assertions

`sudo ovs-stat -p /tmp/results --openstack`

Show all Openstack ports on a bridge br-int

`ovs-stat -p /tmp/results --query "openstack.ports br-int"`

Show all Openstack ports on vlan 53

`ovs-stat -p /tmp/results --query "openstack.ports 53"`

Show all Neutron layer2-population flood tunnels for vlan 53

`ovs-stat -p /tmp/results --query "openstack.l2pop 53"`

Generate ofproto/trace commands for a given port

`$ ovs-stat -p ./mydataset --query "ofproto-trace.port tapa05cfc36-21 dhcp"`
`sudo ovs-appctl ofproto/trace br-int udp,in_port=157,dl_src=b3:22:2f:03:42:5d,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=0.0.0.0,nw_dst=255.255.255.255,udp_src=68,udp_dst=67`

**Troubleshooting**

If your dataset is empty or you see a bunch of "permission denied" make sure you have added the necessary interface connections (see Install section).

If you are running ovs-stat against a sosreport make sure not to use sudo (since snap can only access your $HOME).

### Package name

* ovs-stat

---

### License

* Apache-2.0

---

### Last updated

* 16 September 2021 - latest/stable
* 16 September 2021 - latest/candidate

This snap hasn't been updated in a while. It might be unmaintained and have stability or security issues.

---

### Websites

* [github.com/dosaboy/ovs-stat](https://github.com/dosaboy/ovs-stat "https://github.com/dosaboy/ovs-stat")

---

### Contact

* [opentastic@gmail.com](mailto:opentastic@gmail.com "mailto:opentastic@gmail.com")

---

##### Report a Snap Store violation

* [Report this Snap](https://snapcraft.io/install/ovs-stat/centos#report-snap-modal)

---

## Enable snaps on CentOS and install ovs-stat

Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.

Snaps are discoverable and installable from the [Snap Store](https://snapcraft.io/store), an app store with an audience of millions.

### Enable snapd

Snap is available for [CentOS 7.6+](https://snapcraft.io/install/ovs-stat/centos), and Red Hat Enterprise Linux 7.6+, from the [Extra Packages for Enterprise Linux](https://fedoraproject.org/wiki/EPEL) (EPEL) repository. The EPEL repository can be added to your system with the following command:

```
sudo yum install epel-release
```

Snap can now be installed as follows:

```
sudo yum install snapd
```

Once installed, the *systemd* unit that manages the main snap communication socket needs to be enabled:

```
sudo systemctl enable --now snapd.socket
```

To enable *classic* snap support, enter the following to create a symbolic link between `/var/lib/snapd/snap` and `/snap`:

```
sudo ln -s /var/lib/snapd/snap /snap
```

Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.

### Install ovs-stat

To install ovs-stat, simply use the following command:

```
sudo snap install ovs-stat
```

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