On 2015/11/24 9:47, Chengwei Yang wrote:
Hi all,
We're using mesos in product on CentOS 6 and plan to upgrade CentOS to 7.1, to
avoid affect any tasks running on mesos. We're about to replace all
mesos-masters in fly.
The procedure listed below:
0. 3 mesos-masters running on CentOS 6
1. shutdown 1 mesos-master(CentOS 6) and bring up 1 mesos-master(CentOS 7)
wait the new master synced for some time(is there any simple way to know
when?)
Login the upgraded master mesos web page, it will redirect you to the
Leader master
if upgraded master join the cluster successfully.
Or a script friendly way, you can query zookeeper server the role of the
upgraded
master server by:
echo stat | nc UPGRADED_MASTER_ZOOKEEPER_IP 2181
it will report something like this:
Latency min/avg/max: 0/0/6
Received: 105
Sent: 105
Connections: 2
Outstanding: 0
Zxid: 0x30000001c
Mode: *follower*
Node count: 13
2. repeat step 1
NOTE: we plan to shutdown non-leader first, and shutdown the leader(CentOS 6)
last.
Can we do this in such way? Or any other better suggestions?
