Re: [ceph-users] One host failure bring down the whole cluster

2015-03-31 Thread Kai KH Huang
Huang Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] One host failure bring down the whole cluster On Mon, Mar 30, 2015 at 8:02 PM, Lindsay Mathieson lindsay.mathie...@gmail.com wrote: On Tue, 31 Mar 2015 02:42:27 AM Kai KH Huang wrote: Hi, all I have a two-node Ceph cluster

Re: [ceph-users] One host failure bring down the whole cluster

2015-03-31 Thread Henrik Korkuc
11:53 AM To: Lindsay Mathieson; Kai KH Huang Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] One host failure bring down the whole cluster On Mon, Mar 30, 2015 at 8:02 PM, Lindsay Mathieson lindsay.mathie...@gmail.com wrote: On Tue, 31 Mar 2015 02:42:27 AM Kai KH Huang wrote: Hi, all

[ceph-users] One host failure bring down the whole cluster

2015-03-30 Thread Kai KH Huang
Hi, all I have a two-node Ceph cluster, and both are monitor and osd. When they're both up, osd are all up and in, everything is fine... almost: [root~]# ceph -s health HEALTH_WARN 25 pgs degraded; 316 pgs incomplete; 85 pgs stale; 24 pgs stuck degraded; 316 pgs stuck inactive; 85 pgs

Re: [ceph-users] One host failure bring down the whole cluster

2015-03-30 Thread Lindsay Mathieson
On Tue, 31 Mar 2015 02:42:27 AM Kai KH Huang wrote: Hi, all I have a two-node Ceph cluster, and both are monitor and osd. When they're both up, osd are all up and in, everything is fine... almost: Two things. 1 - You *really* need a min of three monitors. Ceph cannot form a quorum with

Re: [ceph-users] One host failure bring down the whole cluster

2015-03-30 Thread Lindsay Mathieson
On Tue, 31 Mar 2015 02:42:27 AM Kai KH Huang wrote: Hi, all I have a two-node Ceph cluster, and both are monitor and osd. When they're both up, osd are all up and in, everything is fine... almost: Two things. 1 - You *really* need a min of three monitors. Ceph cannot form a quorum with

Re: [ceph-users] One host failure bring down the whole cluster

2015-03-30 Thread Gregory Farnum
On Mon, Mar 30, 2015 at 8:02 PM, Lindsay Mathieson lindsay.mathie...@gmail.com wrote: On Tue, 31 Mar 2015 02:42:27 AM Kai KH Huang wrote: Hi, all I have a two-node Ceph cluster, and both are monitor and osd. When they're both up, osd are all up and in, everything is fine... almost: Two