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<span data-link_translate_en_title="Update CoreOS manually"  data-link_translate_en_url="Update CoreOS manually"></span>[[:en:Update CoreOS manually]][[en:Update CoreOS manually]]
<span data-link_translate_he_title="עדכון CoreOS ידני"  data-link_translate_he_url="%D7%A2%D7%93%D7%9B%D7%95%D7%9F+CoreOS+%D7%99%D7%93%D7%A0%D7%99"></span>[[:he:עדכון CoreOS ידני]][[he:עדכון CoreOS ידני]]
<span data-link_translate_ru_title="Вручную обновить CoreOS"  data-link_translate_ru_url="%D0%92%D1%80%D1%83%D1%87%D0%BD%D1%83%D1%8E+%D0%BE%D0%B1%D0%BD%D0%BE%D0%B2%D0%B8%D1%82%D1%8C+CoreOS"></span>[[:ru:Вручную обновить CoreOS]][[ru:Вручную обновить CoreOS]]
<span data-link_translate_ja_title="コア Os を手動で更新します。"  data-link_translate_ja_url="%E3%82%B3%E3%82%A2+Os+%E3%82%92%E6%89%8B%E5%8B%95%E3%81%A7%E6%9B%B4%E6%96%B0%E3%81%97%E3%81%BE%E3%81%99%E3%80%82"></span>[[:ja:コア Os を手動で更新します。]][[ja:コア Os を手動で更新します。]]
<span data-link_translate_ar_title="تحديث CoreOS يدوياً"  data-link_translate_ar_url="%D8%AA%D8%AD%D8%AF%D9%8A%D8%AB+CoreOS+%D9%8A%D8%AF%D9%88%D9%8A%D8%A7%D9%8B"></span>[[:ar:تحديث CoreOS يدوياً]][[ar:تحديث CoreOS يدوياً]]
<span data-link_translate_zh_title="手动更新 CoreOS"  data-link_translate_zh_url="%E6%89%8B%E5%8A%A8%E6%9B%B4%E6%96%B0+CoreOS"></span>[[:zh:手动更新 CoreOS]][[zh:手动更新 CoreOS]]
<span data-link_translate_ro_title="Actualizaţi manual CoreOS"  data-link_translate_ro_url="Actualiza%C5%A3i+manual+CoreOS"></span>[[:ro:Actualizaţi manual CoreOS]][[ro:Actualizaţi manual CoreOS]]
<span data-link_translate_pl_title="Ręczna aktualizacja CoreOS"  data-link_translate_pl_url="R%C4%99czna+aktualizacja+CoreOS"></span>[[:pl:Ręczna aktualizacja CoreOS]][[pl:Ręczna aktualizacja CoreOS]]
<span data-link_translate_de_title="CoreOS manuell aktualisieren"  data-link_translate_de_url="CoreOS+manuell+aktualisieren"></span>[[:de:CoreOS manuell aktualisieren]][[de:CoreOS manuell aktualisieren]]
<span data-link_translate_nl_title="CoreOS handmatig bijwerken"  data-link_translate_nl_url="CoreOS+handmatig+bijwerken"></span>[[:nl:CoreOS handmatig bijwerken]][[nl:CoreOS handmatig bijwerken]]
<span data-link_translate_it_title="Aggiornare manualmente CoreOS"  data-link_translate_it_url="Aggiornare+manualmente+CoreOS"></span>[[:it:Aggiornare manualmente CoreOS]][[it:Aggiornare manualmente CoreOS]]
<span data-link_translate_pt_title="Atualizar CoreOS manualmente"  data-link_translate_pt_url="Atualizar+CoreOS+manualmente"></span>[[:pt:Atualizar CoreOS manualmente]][[pt:Atualizar CoreOS manualmente]]
<span data-link_translate_es_title="Actualizar manualmente CoreOS"  data-link_translate_es_url="Actualizar+manualmente+CoreOS"></span>[[:es:Actualizar manualmente CoreOS]][[es:Actualizar manualmente CoreOS]]
<span data-link_translate_fr_title="Mettre a jour CoreOS manuellement"  data-link_translate_fr_url="Mettre_a_jour_CoreOS_manuellement"></span>[[:fr:Mettre a jour CoreOS manuellement]][[fr:Mettre a jour CoreOS manuellement]]
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<!--T:1-->
CoreOS by default includes a built-in system update <span class="notranslate">(update_engine)</span> who plan an audit of updates available at regular intervals, automatically installs and program a reboot   for that they are effective.


<!--T:2-->
However, it may be useful in some cases to search and manually install the updates available. We will see below how to upgrade a stable CoreOS.


<!--T:3-->
We assume you just deploy a CoreOS instance and that you are connected to is SSH user <span class="notranslate">"core"</span>.


<!--T:4-->
We begin by checking the current version of CoreOS :


<!--T:5-->
<syntaxhighlight lang="bash">
core@CoreOSnode ~ $ cat /etc/lsb-release
DISTRIB_ID=CoreOS
DISTRIB_RELEASE=633.1.0
DISTRIB_CODENAME="Red Dog"
DISTRIB_DESCRIPTION="CoreOS 633.1.0"
</syntaxhighlight>


<!--T:6-->
We are launching the installation of updates (the return has been voluntarily truncated ) :

 
<!--T:7-->
<syntaxhighlight lang="bash">
core@CoreOSnode ~ $ sudo update_engine_client -update
[0622/105739:INFO:update_engine_client.cc(245)] Initiating update check and install.
[0622/105739:INFO:update_engine_client.cc(250)] Waiting for update to complete.
LAST_CHECKED_TIME=1434963460
PROGRESS=0.000000
CURRENT_OP=UPDATE_STATUS_UPDATE_AVAILABLE
NEW_VERSION=0.0.0.0
NEW_SIZE=137131931
LAST_CHECKED_TIME=1434963460
PROGRESS=0.000000
CURRENT_OP=UPDATE_STATUS_UPDATE_AVAILABLE
...
NEW_VERSION=0.0.0.0
NEW_SIZE=137131931
LAST_CHECKED_TIME=1434963460
PROGRESS=0.993617
CURRENT_OP=UPDATE_STATUS_DOWNLOADING
NEW_VERSION=0.0.0.0
NEW_SIZE=137131931
LAST_CHECKED_TIME=1434963460
PROGRESS=0.000000
CURRENT_OP=UPDATE_STATUS_FINALIZING
NEW_VERSION=0.0.0.0
NEW_SIZE=137131931
LAST_CHECKED_TIME=1434963460
PROGRESS=0.000000
CURRENT_OP=UPDATE_STATUS_FINALIZING
NEW_VERSION=0.0.0.0
NEW_SIZE=137131931

<!--T:8-->
Broadcast message from locksmithd at 2015-06-22 10:59:57.244742724 +0200 CEST:
System reboot in 5 minutes!

<!--T:9-->
LAST_CHECKED_TIME=1434963460
PROGRESS=0.000000
CURRENT_OP=UPDATE_STATUS_UPDATED_NEED_REBOOT
NEW_VERSION=0.0.0.0
NEW_SIZE=137131931
[0622/105959:INFO:update_engine_client.cc(193)] Update succeeded -- reboot needed.
core@CoreOSnode ~ $
</syntaxhighlight>


<!--T:10-->
At the end of the installation of updates, we are invited to restart our instance CoreOS is immediately ("sudo reboot   ") either automatically at the end of 5 minutes.


<!--T:11-->
After our CoreOS instance restarts, we check the new version thereof :


<!--T:12-->
<syntaxhighlight lang="bash">
core@CoreOSnode ~ $ cat /etc/lsb-release
DISTRIB_ID=CoreOS
DISTRIB_RELEASE=681.2.0
DISTRIB_CODENAME="Red Dog"
DISTRIB_DESCRIPTION="CoreOS 681.2.0"
</syntaxhighlight>


<!--T:13-->
We are now in the latest stable CoreOS (681.2.0 at the time of this FAQ ).


==Different update strategies /reboot   == <!--T:14-->


<!--T:15-->
CoreOS integrates 4 stratégies de reboot    (reboot  -strategy ), ces stratégies contrôlent la façon dont le reboot    se produit. Ces 4 strategies are :


<!--T:16-->
;best-effort 
:The parameter "by default in CoreOS ". This setting determines whether the machine is part of a cluster. If DCE is started the machine is supposed to be part of a cluster and therefore uses the strategy "DCE-lock ". Otherwise, it is the strategy "reboot  " which is used.

<!--T:17-->
;DCE-Lock 
:Avec cette stratégie, chaque machine verrouille le reboot    avant d'autoriser celui-ci. Cela permet à une mise à jour d'être appliquée rapidement à un cluster sans perdre le quorum dans Etcd. En effet, le nombre de machines autorisées à redémarrer simultanément est configurable via la commande suivante (by adapting the maximum number to your context ) :


<!--T:18-->
<syntaxhighlight lang="bash">
core@CoreOSnode ~ $ locksmithctl set-max 2
Old-Max: 1
Max: 2
</syntaxhighlight>


<!--T:19-->
;reboot  
:This strategy will restart the machine as soon as the updates are installed.

<!--T:20-->
;off 
:Avec cette stratégie, la machine attend une commande demandant explicitement le reboot    après installation des mises à jour.


<!--T:21-->
The strategy is defined in the file /etc/coreos/update.conf :


<!--T:22-->
<syntaxhighlight lang="bash">
core@CoreOSnode ~ $ cat /etc/coreos/update.conf
REBOOT_STRATEGY=off 
</syntaxhighlight>


<!--T:23-->
be in the cloud-config file used like this :


<!--T:24-->
<pre>
#cloud-config
coreos:
  update:
    reboot-strategy: best-effort
</pre>



<!--T:25-->
[[Category:CoreOS]]
[[Category:Linux]]
[[Category:cloudstack]]
[[Category:public_cloud]]
[[Category:private_cloud]]
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