def _backup(hosts, remote_dir, base_dir=LB_CFG_BAK_DIR):
""" 备份远程主机的目录.
"""
# 自定义
now = time.strftime("%Y%m%d%H%I%M%S")
bak_dir = "%s/%s_%s" % (base_dir, \
remote_dir.replace("/","-"), now)
for host in hosts:
# 如果远程目录不存在, 就不备份.
cmd = "test -d %s" % remote_dir
rc, so, se = utils.remote_cmd(host, cmd)
if rc != 0:
continue
# 备份基目录如果不存在, 创建.
cmd = "sudo test -d %s ||sudo /bin/mkdir -p %s" % (
base_dir, base_dir)
utils.remote_cmd(host, cmd)
# 执行备份.
cmd = "sudo /bin/cp -a %s %s " % (remote_dir, bak_dir)
rc, so, se = utils.remote_cmd(host, cmd)
if rc != 0:
return (False, se)
return (True, None)
def lips(lb, ip, lips):
""" 配置 lb 的 lips.
"""
# 因为改了 DNS, 先清空本地 known_hosts 文件.
cmd = "cat /dev/null >%s" % LOCAL_SSH_KNOWN_HOSTS
rc, so, se = utils.shell(cmd)
if rc != 0:
message = "clean %s failed." % LOCAL_SSH_KNOWN_HOSTS
logger.error(message)
return False
message = "Waiting for network administor to change "\
"network conf for %s" % lb
logger.info(message)
# 发邮件让网络工程师修改 lb 的网络配置.
subject = u"[接入集群]请在一小时之内修改%s的网络设置, 否则集群会建立失败" % lb
context = ""
mail.mail(None, subject, context)
# 检查是否能够 ping 通.
time.sleep(120)
checkcmd = "ping -c 3 %s &>/dev/null" % ip
ret = utils.check_wait_null(checkcmd, timeinit=0,
interval=5, timeout=3600)
if not ret:
logger.error("Ping failed, lb:%s, ip:%s" % (lb, ip))
return False
# 配置 lip.
cmd = "sudo -i wdconfig lvsfullnat_lip"
rc, so, se = utils.remote_cmd(ip, cmd)
if rc != 0:
message = "Cfg lips failed, lb:%s, error:%s" % (lb, se)
logger.error(message)
return False
cmd = "cd /tmp/post_config/lvsfullnat_lip_config && "\
"sudo sh lvsfullnat_lip_config.sh %s " % " ".join(lips)
rc, so, se = utils.remote_cmd(ip, cmd)
if rc != 0:
message = "Cfg lips failed, lb:%s, error:%s" % (lb, se)
logger.error(message)
return False
return True
def ip(lb, _type, device, internalip, internalnetmask, \
internalgateway, extraip=None, extranetmask=None, \
extragateway=None):
""" 配置 lb 的 ip.
"""
time.sleep(120)
# 配置 IP.
cmd = "sudo -i wdconfig lvsfullnat_ip"
rc, so, se = utils.remote_cmd(lb, cmd)
if rc != 0:
logger.error("Cfg %s ip failed - %s" % (lb, se))
return False
cmd = "cd /tmp/post_config/lvsfullnat_ip_config "\
"&& sudo sh lvsfullnat_ip_config.sh "\
"%s %s %s %s %s %s %s %s "\
"&>/tmp/.lvsfullnat_ip_config.log &" % (
_type, device, internalip, internalnetmask,
internalgateway, extraip, extranetmask,
extragateway)
sshcmd = """ ssh -oConnectTimeout=3 -oStrictHostKeyChecking=no """\
"""op@%s "%s" & """ % (lb, cmd)
os.system(sshcmd)
logger.info("Cfg lb ip: %s" % lb)
# 先获取当前的内网 IP.
origin_internalip = utils.dns_resolv([lb])[0]
# 内网 IP 被改了, 修改 DNS.
ret = dnsapi.modify_wrapper(lb, internalip)
if ret == "failed":
message = "Change %s dns ip from %s to %s failed" % \
(lb, origin_internalip, internalip)
logger.error(message)
return False
message = "Change %s dns ip from %s to %s success" %\
(lb, origin_internalip, internalip)
logger.info(message)
return True
def _lb_single(host):
""" 安装单台 lb.
"""
# 执行安装 fullnat 的命令.
rc, so, se = utils.remote_cmd(host, LVS_FULLNAT_CMD)
# 安装 lvs fullnat 完成后会重启系统, 当 ping 不通时,
# 说明已经重启系统.
checkcmd = "! ping -c 3 %s &>/dev/null" % host
ret = utils.check_wait_null(checkcmd, timeinit=0,
interval=5, timeout=2700)
if not ret:
return False
# 当 ping 通时, 说明已经重启完毕.
checkcmd = "ping -c 3 %s &>/dev/null" % host
ret = utils.check_wait_null(checkcmd, timeinit=0,
interval=5, timeout=1200)
return {"host": host, "result": ret}
return False
# 备份 lb 的配置文件.
for dir in "/etc/keepalived/", "/usr/local/etc/":
status, message = _backup(lbs, dir)
if not status:
logger.error(message)
return False
message = "Backup cfg success, lbs:" % lbs
logger.info(message)
# 删除 lb 的配置文件.
for dir in "/etc/keepalived/", "/usr/local/etc/":
cmd = "sudo /bin/rm -rf %s/*" % dir
for lb in lbs:
rc, so, se = utils.remote_cmd(lb, cmd)
if rc != 0:
logger.error(se)
return False
message = "Delete cfg success, lbs:%s" % lbs
logger.info(message)
# 传输配置.
for lb in lbs:
lb_dir = base_dir + "/" + lb
lb_keepalived_dir = lb_dir + "/keepalived"
lb_osfpd_dir = lb_dir + "/ospfd"
_dict = {
lb_keepalived_dir: "/etc/keepalived/",
lb_osfpd_dir: "/usr/local/etc/",
