ceph-rest-api: when port=0 use the DEFAULT_PORT instead

[JiYou]

When /etc/ceph/ceph.conf with below settings:

[global]
public_addr = 10.153.55.135

in this case, port for ceph-rest-api would get a random port for rest service. Take public_addr = 10.153.55.135 as an example, the original code would get a random port for rest-api service.

    addr = app.ceph_cluster.conf_get('public_addr') or DEFAULT_ADDR  # <-- addr = 10.153.55.135:0/0

    if addr == '-':
        addr = None
        port = None
    else:
        # remove the type prefix from the conf value if any
        for t in ('legacy:', 'msgr2:'):
            if addr.startswith(t):
                addr = addr[len(t):]
                break
        # remove any nonce from the conf value
        addr = addr.split('/')[0]
        addr, port = addr.rsplit(':', 1)   # addr = 10.153.55.135, port = '0'
    addr = addr or DEFAULT_ADDR
    port = port or DEFAULT_PORT  # <-- if port == '0', the port would be 0, ceph-rest-api would get a random port instead of 5000.
    port = int(port)

This patch mainly wants to use the default port 5000 for this case.

Signed-off-by: You Ji youji@ebay.com

[tchaikov]

• http://pulpito.ceph.com/kchai-2017-11-21_16:17:37-rados-wip-kefu-testing-2017-11-21-1844-distro-basic-mira/
• http://pulpito.ceph.com/kchai-2017-11-22_05:41:59-rados-wip-kefu-testing-2017-11-21-1844-distro-basic-mira/