如何使oc集群持久化?

有几种方法可以做到这一点。oc集群没有持久化资源的主要用例。

有两种方法可以做到这一点:

• 利用捕获etcd,如中所述 oc cluster up README
• 有一个 wrapper tool ,这样做很容易。

中现在有一个示例 cluster up --help 命令,它必须保持最新状态,因此请首先检查

oc cluster up --help

...


Examples:

  # Start OpenShift on a new docker machine named 'openshift'
  oc cluster up --create-machine

  # Start OpenShift using a specific public host name
  oc cluster up --public-hostname=my.address.example.com

  # Start OpenShift and preserve data and config between restarts
  oc cluster up --host-data-dir=/mydata --use-existing-config

特别是在 v1.3.2 使用 --host-data-dir 和 --use-existing-config

假设您将docker机器与虚拟机(如virtual box)一起使用,我发现最简单的方法是在虚拟机和openshift群集启动并运行时拍摄虚拟机快照。此快照将备份磁盘之外的内存,因此您可以稍后通过还原vm快照来还原整个群集,然后运行 docker-machine start ...

顺便说一句,从最新的操作系统映像openshift/origin:v3.6.0-rc开始。0和oc cli, --host-data-dir=/mydata 正如另一个答案所建议的那样,这对我不起作用。

我正在使用:

VirtualBox 5.1.26 Kubernetes v1.5.2+43a9be4
openshift v1.5.0+031cbe4

使用--host data dir(和其他)对我不起作用:

oc cluster up  --logging=true --metrics=true --docker-machine=openshift --use-existing-config=true --host-data-dir=/vm/data --host-config-dir=/vm/config --host-pv-dir=/vm/pv --host-volumes-dir=/vm/volumes

输出:

-- Checking OpenShift client ... OK
-- Checking Docker client ...
   Starting Docker machine 'openshift'
   Started Docker machine 'openshift'
-- Checking Docker version ...
   WARNING: Cannot verify Docker version
-- Checking for existing OpenShift container ... OK
-- Checking for openshift/origin:v1.5.0 image ... OK
-- Checking Docker daemon configuration ... OK
-- Checking for available ports ... OK
-- Checking type of volume mount ...
   Using Docker shared volumes for OpenShift volumes
-- Creating host directories ... OK
-- Finding server IP ...
   Using docker-machine IP 192.168.99.100 as the host IP
   Using 192.168.99.100 as the server IP
-- Starting OpenShift container ...
   Starting OpenShift using container 'origin'
FAIL
   Error: could not start OpenShift container "origin"
   Details:
     Last 10 lines of "origin" container log:
     github.com/openshift/origin/vendor/github.com/coreos/pkg/capnslog.(*PackageLogger).Panicf(0xc4202a1600, 0x42b94c0, 0x1f, 0xc4214d9f08, 0x2, 0x2)
        /go/src/github.com/openshift/origin/_output/local/go/src/github.com/openshift/origin/vendor/github.com/coreos/pkg/capnslog/pkg_logger.go:75 +0x16a
     github.com/openshift/origin/vendor/github.com/coreos/etcd/mvcc/backend.newBackend(0xc4209f84c0, 0x33, 0x5f5e100, 0x2710, 0xc4214d9fa8)
        /go/src/github.com/openshift/origin/_output/local/go/src/github.com/openshift/origin/vendor/github.com/coreos/etcd/mvcc/backend/backend.go:106 +0x341
     github.com/openshift/origin/vendor/github.com/coreos/etcd/mvcc/backend.NewDefaultBackend(0xc4209f84c0, 0x33, 0x461e51, 0xc421471200)
        /go/src/github.com/openshift/origin/_output/local/go/src/github.com/openshift/origin/vendor/github.com/coreos/etcd/mvcc/backend/backend.go:100 +0x4d
     github.com/openshift/origin/vendor/github.com/coreos/etcd/etcdserver.NewServer.func1(0xc4204bf640, 0xc4209f84c0, 0x33, 0xc421079a40)
        /go/src/github.com/openshift/origin/_output/local/go/src/github.com/openshift/origin/vendor/github.com/coreos/etcd/etcdserver/server.go:272 +0x39
     created by github.com/openshift/origin/vendor/github.com/coreos/etcd/etcdserver.NewServer
        /go/src/github.com/openshift/origin/_output/local/go/src/github.com/openshift/origin/vendor/github.com/coreos/etcd/etcdserver/server.go:274 +0x345

Openshift写入目录/vm/…(也在VirtualBox中定义),但无法成功启动。 看[ https://github.com/openshift/origin/issues/12602][1]

对我也很有用,使用虚拟箱快照并恢复它们。

要使其在每次关机后保持不变,您需要提供: base-dir 参数

$ mkdir ~/openshift-config
$ oc cluster up --base-dir=~/openshift-config 

求助

$ oc cluster up --help
...
Options:
--base-dir='': Directory on Docker host for cluster up configuration
--enable=[*]: A list of components to enable.  '*' enables all on-by-default components, 'foo' enables the component named 'foo', '-foo' disables the component named 'foo'.
--forward-ports=false: Use Docker port-forwarding to communicate with origin container. Requires 'socat' locally.
--http-proxy='': HTTP proxy to use for master and builds
--https-proxy='': HTTPS proxy to use for master and builds
--image='openshift/origin-${component}:${version}': Specify the images to use for OpenShift
--no-proxy=[]: List of hosts or subnets for which a proxy should not be used
--public-hostname='': Public hostname for OpenShift cluster
--routing-suffix='': Default suffix for server routes
--server-loglevel=0: Log level for OpenShift server
--skip-registry-check=false: Skip Docker daemon registry check
--write-config=false: Write the configuration files into host config dir

但你不应该使用它,因为“集群升级”在4.0.0版中被删除。更多信息请参见: https://github.com/openshift/origin/pull/21399