> For the complete documentation index, see [llms.txt](https://baric6.gitbook.io/barics-knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://baric6.gitbook.io/barics-knowledge-base/development/siems-and-edr/wazuh/wazuh-manager-server-and-agent-upgrade.md).

# Wazuh manager server and agent upgrade

to check what version is the wazuh server

```
/var/ossec/bin/wazuh-control -j info
```

**Upgrade Documentation**

{% embed url="<https://documentation.wazuh.com/current/upgrade-guide/upgrading-central-components.html>" %}

***note***

#### for indexer upgrade

* skip Disable shard allocation
* skip Stop non-essential indexing and perform a synced flush
* skip Check that the newly-upgraded node joins the cluster.
* skip Re-enable shard allocation.
* skip Check again the status of the cluster to see if shard allocation has finished.

## Upgrade agent

you are looking for a tool within the manager called agent\_upgrade

located:

```
/var/ossec/bin/agent_upgrade
```

to see outdated agents

```
./agent_upgrade -l
```

to upgrade a single agent

```
./agent_upgrade -a 002 // the number is agent number
```

to upgrade multi agents at once

```
agent_upgrade -l | awk '$1 ~ /^[0-9]+$/ {print "Starting upgrade on agent " $1; system("/var/ossec/bin/agent_upgrade -a " $1)}'
```