Ceph » rgw

I use ceph-radosgw-10.2.5-0.el7.x86_64 on CentOS 7.3. I has recived RequestTimeTooSkewed affter 15 minutes since i created presigned_url to ceph radosgw and X-Amz-Expires doesn't work. I saw in src/rgw/rgw_rest_s3.cc:
s->aws4_auth->expires = s->info.args.get("X-Amz-Expires");
if (s->aws4_auth->expires.size() != 0) {
/* X-Amz-Expires provides the time period, in seconds, for which
the generated presigned URL is valid. The minimum value
you can set is 1, and the maximum is 604800 (seven days) /
time_t exp = atoll(s->aws4_auth->expires.c_str());
if ((exp < 1) || (exp > 604800)) {
dout(10) << "NOTICE: exp out of range, exp = " << exp << dendl;
return -EPERM;
}
/ handle expiration in epoch time */
now_req = (uint64_t)timegm(&date_t);
if (now >= now_req + exp) {
dout(10) << "NOTICE: now = " << now << ", now_req = " << now_req << ", exp = " << exp << dendl;
return -EPERM;
}
}

if ( (now_req < now - RGW_AUTH_GRACE_MINS * 60) ||
         (now_req > now + RGW_AUTH_GRACE_MINS * 60) ) {
      dout(10) << "NOTICE: request time skew too big." << dendl;
      dout(10) << "now_req = " << now_req << " now = " << now << "; now - RGW_AUTH_GRACE_MINS=" << now - RGW_AUTH_GRACE_MINS * 60 << "; now + RGW_AUTH_GRACE_MINS=" << now + RGW_AUTH_GRACE_MINS * 60 << dendl;
      return -ERR_REQUEST_TIME_SKEWED;
    }