# Upgrade SOGo from v2 to v3

!!! attention

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[TOC]


SOGo-3.x has a shinny new web UI, you can try the online demo here:
<http://sogo.nu> (search 'demo' on the page).

SOGo team offers support for both SOGo v3 and v2, so it's totally fine if you
want to stick to SOGo-2.x. In case you want to try SOGo-3.x, please try steps
below.

## Upgrade SOGo On RHEL/CentOS

* Backup config files first:

```
mkdir -p /root/sogo-backup/{sogo,sysconfig}
cp /etc/sogo/* /root/sogo-backup/sogo/
cp /etc/sysconfig/sogo /root/sogo-backup/sysconfig/
```

* Open file `/etc/yum.repos.d/sogo.repo`, change the `baseurl=` setting to:

```
baseurl=https://packages.inverse.ca/SOGo/nightly/3/rhel/$releasever/$basearch/
```

* Remove `sope` and `sogo` packages first, then install SOGo again:

```
yum remove "sope*" "sogo*"
yum install sogo sogo-ealarms-notify sogo-tool sogo-activesync sope49-gdl1-mysql sope49-gdl1-postgresql
```

* Restore backup files:

```
cp /root/sogo-backup/sogo/* /etc/sogo/
cp /root/sogo-backup/sysconfig/sogo /etc/sysconfig/
```

* Restart SOGo and memcached services:

```
service memcached restart
service sogod restart
```

## Upgrade SOGo On Debian/Ubuntu

* Backup config files first:

```
mkdir -p /root/sogo-backup/{sogo,default}
cp /etc/sogo/* /root/sogo-backup/sogo/
cp /etc/default/sogo /root/sogo-backup/default/
```

* Open file `/etc/apt/sources.list`,

    !!! warning

        Please make sure you have correct distribution name (the `jessie`, `xenial` in examples below) in `/etc/apt/sources.list`.

    * On Debian, make sure you have SOGo repo like below: ```https://packages.inverse.ca/SOGo/nightly/3/debian jessie jessie```
    * On Ubuntu, make sure you have SOGo repo like below: ```https://packages.inverse.ca/SOGo/nightly/3/ubuntu xenial xenial```

* Remove `sope` and `sogo` packages first, then install SOGo again:

```
apt-get remove "libsope*" "sogo*"

apt-get update
apt-get install sogo sogo-activesync sope4.9-gdl1-mysql sope4.9-gdl1-postgresql
```

* Restore backup files:

```
cp /root/sogo-backup/sogo/* /etc/sogo/
cp /root/sogo-backup/default/sogo /etc/default/
```

* Make sure SOGo log file is owned by SOGo daemon user and group:
    * On Linux, user/group names are: `sogo:sogo`.
    * on FreeBSD, user/group names are: `sogod:sogod`.
    * on OpenBSD, user/group names are: `_sogo:_sogo`.

```
chown sogo:sogo /var/log/sogo/sogo.log
```

* Restart SOGo and memcached services:

```
service memcached restart
service sogo restart
```

## Troubleshooting

If SOGo doesn't work as expected, please check its log file
`/var/log/sogo/sogo.log`. If you don't understand what the error message means,
please extract related error message and post to our online support forum:
<https://forum.iredmail.org/>.
