Haproxy

Kolla OpenStack 部署失敗並顯示“haproxy：等待虛擬 IP 出現”

  • February 15, 2019

我正在嘗試按照官方指南在 Ubuntu 主機上使用 kolla-ansible (7.0.0) 部署 OpenStack Queens 。

成功後bootstrap-servers命令precheck失敗deploy：

RUNNING HANDLER [haproxy : Waiting for virtual IP to appear] **********************************************************  
fatal: [testcloudcontrol01]: FAILED! => {"changed": false, "elapsed": 300, "msg": "Timeout when waiting for 10.52.41.98:3306"}  
fatal: [testcloudcontrol02]: FAILED! => {"changed": false, "elapsed": 300, "msg": "Timeout when waiting for 10.52.41.98:3306"}

檢查失敗的原因是kolla_internal_vip_address沒有出現。

全域變數.yml

config_strategy: "COPY_ALWAYS"
kolla_base_distro: "ubuntu"
kolla_install_type: "binary"
openstack_release: "queens"
kolla_internal_vip_address: "10.52.41.98"
kolla_internal_fqdn: "testcloudapi.example.com"
kolla_external_vip_address: "{{ kolla_internal_vip_address }}"
kolla_external_fqdn: "{{ kolla_internal_fqdn }}"
network_interface: "ens160"
api_interface: "ens160"
storage_interface: "ens161"
keepalived_virtual_router_id: "148"

我目前固定在皇后區，因為我想複製我們的生產環境進行測試。

ip addr在應該部署 haproxy 的節點之一上的輸出：

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
   link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
   inet 127.0.0.1/8 scope host lo
      valid_lft forever preferred_lft forever
   inet6 ::1/128 scope host
      valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
   link/ether 00:50:56:a1:6a:2c brd ff:ff:ff:ff:ff:ff
   inet 10.52.41.100/24 brd 10.52.41.255 scope global ens160
      valid_lft forever preferred_lft forever
   inet6 fe80::250:56ff:fea1:6a2c/64 scope link
      valid_lft forever preferred_lft forever
3: ens161: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
   link/ether 00:50:56:a1:7d:07 brd ff:ff:ff:ff:ff:ff
   inet 10.52.42.100/24 brd 10.52.42.255 scope global ens161
      valid_lft forever preferred_lft forever
   inet6 fe80::250:56ff:fea1:7d07/64 scope link
      valid_lft forever preferred_lft forever
4: ens224: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
   link/ether 00:50:56:a1:23:6e brd ff:ff:ff:ff:ff:ff
   inet 10.52.40.100/24 brd 10.52.40.255 scope global ens224
      valid_lft forever preferred_lft forever
   inet6 fe80::250:56ff:fea1:236e/64 scope link
      valid_lft forever preferred_lft forever
5: ens256: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
   link/ether 00:50:56:a1:20:12 brd ff:ff:ff:ff:ff:ff
   inet 10.52.44.100/24 brd 10.52.44.255 scope global ens256
      valid_lft forever preferred_lft forever
   inet6 fe80::250:56ff:fea1:2012/64 scope link
      valid_lft forever preferred_lft forever
6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
   link/ether 02:42:b0:8a:93:e7 brd ff:ff:ff:ff:ff:ff
   inet 172.17.0.1/16 scope global docker0
      valid_lft forever preferred_lft forever

這些節點是具有 VMXNet3 網卡的 VMware 虛擬機。

輸出docker logs keepalived：

+ sudo -E kolla_set_configs
INFO:__main__:Loading config file at /var/lib/kolla/config_files/config.json
INFO:__main__:Validating config file
INFO:__main__:Kolla config strategy set to: COPY_ALWAYS
INFO:__main__:Copying service configuration files
INFO:__main__:Deleting /etc/keepalived/keepalived.conf
INFO:__main__:Copying /var/lib/kolla/config_files/keepalived.conf to /etc/keepalived/keepalived.conf
INFO:__main__:Setting permission for /etc/keepalived/keepalived.conf
INFO:__main__:Writing out command to execute
++ cat /run_command
+ CMD='/usr/sbin/keepalived -nld -p /run/keepalived.pid'
+ ARGS=
+ [[ ! -n '' ]]
+ . kolla_extend_start
++ modprobe ip_vs
++ '[' -f /run/keepalived.pid ']'
+ echo 'Running command: '\''/usr/sbin/keepalived -nld -p /run/keepalived.pid'\'''
Running command: '/usr/sbin/keepalived -nld -p /run/keepalived.pid'
+ exec /usr/sbin/keepalived -nld -p /run/keepalived.pid
Thu Dec 13 12:10:26 2018: Starting Keepalived v1.3.9 (10/21,2017)
Thu Dec 13 12:10:26 2018: Opening file '/etc/keepalived/keepalived.conf'.
Thu Dec 13 12:10:26 2018: Starting Healthcheck child process, pid=11
Thu Dec 13 12:10:26 2018: Opening file '/etc/keepalived/keepalived.conf'.
Thu Dec 13 12:10:26 2018: Starting VRRP child process, pid=12
Thu Dec 13 12:10:26 2018: ------< Global definitions >------
Thu Dec 13 12:10:26 2018:  Router ID = testcloudcontrol01.example.com
Thu Dec 13 12:10:26 2018:  Default interface = eth0
Thu Dec 13 12:10:26 2018:  LVS flush = false
Thu Dec 13 12:10:26 2018:  VRRP IPv4 mcast group = 224.0.0.18
Thu Dec 13 12:10:26 2018:  VRRP IPv6 mcast group = ff02::12
Thu Dec 13 12:10:26 2018:  Gratuitous ARP delay = 5
Thu Dec 13 12:10:26 2018:  Gratuitous ARP repeat = 5
Thu Dec 13 12:10:26 2018:  Gratuitous ARP refresh timer = 0
Thu Dec 13 12:10:26 2018:  Gratuitous ARP refresh repeat = 1
Thu Dec 13 12:10:26 2018:  Gratuitous ARP lower priority delay = 4294
Thu Dec 13 12:10:26 2018:  Gratuitous ARP lower priority repeat = -1
Thu Dec 13 12:10:26 2018:  Send advert after receive lower priority advert = true
Thu Dec 13 12:10:26 2018:  Send advert after receive higher priority advert = false
Thu Dec 13 12:10:26 2018:  Gratuitous ARP interval = 0
Thu Dec 13 12:10:26 2018:  Gratuitous NA interval = 0
Thu Dec 13 12:10:26 2018:  VRRP default protocol version = 2
Thu Dec 13 12:10:26 2018:  Iptables input chain = INPUT
Thu Dec 13 12:10:26 2018:  Using ipsets = true
Thu Dec 13 12:10:26 2018:  ipset IPv4 address set = keepalived
Thu Dec 13 12:10:26 2018:  ipset IPv6 address set = keepalived6
Thu Dec 13 12:10:26 2018:  ipset IPv6 address,iface set = keepalived_if6
Thu Dec 13 12:10:26 2018:  VRRP check unicast_src = false
Thu Dec 13 12:10:26 2018:  VRRP skip check advert addresses = false
Thu Dec 13 12:10:26 2018:  VRRP strict mode = false
Thu Dec 13 12:10:26 2018:  VRRP process priority = 0
Thu Dec 13 12:10:26 2018:  VRRP don't swap = false
Thu Dec 13 12:10:26 2018:  Checker process priority = 0
Thu Dec 13 12:10:26 2018:  Checker don't swap = false
Thu Dec 13 12:10:26 2018:  SNMP keepalived disabled
Thu Dec 13 12:10:26 2018:  SNMP checker disabled
Thu Dec 13 12:10:26 2018:  SNMP RFCv2 disabled
Thu Dec 13 12:10:26 2018:  SNMP RFCv3 disabled
Thu Dec 13 12:10:26 2018:  SNMP traps disabled
Thu Dec 13 12:10:26 2018:  SNMP socket = default (unix:/var/agentx/master)
Thu Dec 13 12:10:26 2018:  Network namespace = (default)
Thu Dec 13 12:10:26 2018:  DBus disabled
Thu Dec 13 12:10:26 2018:  DBus service name = (null)
Thu Dec 13 12:10:26 2018:  Script security disabled
Thu Dec 13 12:10:26 2018:  Default script uid:gid 0:0
Thu Dec 13 12:10:26 2018: Registering Kernel netlink reflector
Thu Dec 13 12:10:26 2018: Registering Kernel netlink command channel
Thu Dec 13 12:10:26 2018: Registering gratuitous ARP shared channel
Thu Dec 13 12:10:26 2018: Opening file '/etc/keepalived/keepalived.conf'.
Thu Dec 13 12:10:26 2018: WARNING - default user 'keepalived_script' for script execution does not exist - please create.
Thu Dec 13 12:10:26 2018: Truncating auth_pass to 8 characters
Thu Dec 13 12:10:26 2018: SECURITY VIOLATION - scripts are being executed but script_security not enabled.
Thu Dec 13 12:10:26 2018: ------< Global definitions >------
Thu Dec 13 12:10:26 2018:  Router ID = testcloudcontrol01.example.com
Thu Dec 13 12:10:26 2018:  Default interface = eth0
Thu Dec 13 12:10:26 2018:  LVS flush = false
Thu Dec 13 12:10:26 2018:  VRRP IPv4 mcast group = 224.0.0.18
Thu Dec 13 12:10:26 2018:  VRRP IPv6 mcast group = ff02::12
Thu Dec 13 12:10:26 2018:  Gratuitous ARP delay = 5
Thu Dec 13 12:10:26 2018:  Gratuitous ARP repeat = 5
Thu Dec 13 12:10:26 2018:  Gratuitous ARP refresh timer = 0
Thu Dec 13 12:10:26 2018:  Gratuitous ARP refresh repeat = 1
Thu Dec 13 12:10:26 2018:  Gratuitous ARP lower priority delay = 5
Thu Dec 13 12:10:26 2018:  Gratuitous ARP lower priority repeat = 5
Thu Dec 13 12:10:26 2018:  Send advert after receive lower priority advert = true
Thu Dec 13 12:10:26 2018:  Send advert after receive higher priority advert = false
Thu Dec 13 12:10:26 2018:  Gratuitous ARP interval = 0
Thu Dec 13 12:10:26 2018:  Gratuitous NA interval = 0
Thu Dec 13 12:10:26 2018:  VRRP default protocol version = 2
Thu Dec 13 12:10:26 2018:  Iptables input chain = INPUT
Thu Dec 13 12:10:26 2018:  Using ipsets = false
Thu Dec 13 12:10:26 2018:  ipset IPv4 address set = keepalived
Thu Dec 13 12:10:26 2018:  ipset IPv6 address set = keepalived6
Thu Dec 13 12:10:26 2018:  ipset IPv6 address,iface set = keepalived_if6
Thu Dec 13 12:10:26 2018:  VRRP check unicast_src = false
Thu Dec 13 12:10:26 2018:  VRRP skip check advert addresses = false
Thu Dec 13 12:10:26 2018:  VRRP strict mode = false
Thu Dec 13 12:10:26 2018:  VRRP process priority = 0
Thu Dec 13 12:10:26 2018:  VRRP don't swap = false
Thu Dec 13 12:10:26 2018:  Checker process priority = 0
Thu Dec 13 12:10:26 2018:  Checker don't swap = false
Thu Dec 13 12:10:26 2018:  SNMP keepalived disabled
Thu Dec 13 12:10:26 2018:  SNMP checker disabled
Thu Dec 13 12:10:26 2018:  SNMP RFCv2 disabled
Thu Dec 13 12:10:26 2018:  SNMP RFCv3 disabled
Thu Dec 13 12:10:26 2018:  SNMP traps disabled
Thu Dec 13 12:10:26 2018:  SNMP socket = default (unix:/var/agentx/master)
Thu Dec 13 12:10:26 2018:  Network namespace = (default)
Thu Dec 13 12:10:26 2018:  DBus disabled
Thu Dec 13 12:10:26 2018:  DBus service name = (null)
Thu Dec 13 12:10:26 2018:  Script security disabled
Thu Dec 13 12:10:26 2018:  Default script uid:gid 0:0
Thu Dec 13 12:10:26 2018: ------< VRRP Topology >------
Thu Dec 13 12:10:26 2018:  VRRP Instance = kolla_internal_vip_148
Thu Dec 13 12:10:26 2018:    Using VRRPv2
Thu Dec 13 12:10:26 2018:    Want State = BACKUP
Thu Dec 13 12:10:26 2018:    Running on device = ens160
Thu Dec 13 12:10:26 2018:    Skip checking advert IP addresses = no
Thu Dec 13 12:10:26 2018:    Enforcing strict VRRP compliance = no
Thu Dec 13 12:10:26 2018:    Using src_ip = 10.52.41.100
Thu Dec 13 12:10:26 2018:    Gratuitous ARP delay = 5
Thu Dec 13 12:10:26 2018:    Gratuitous ARP repeat = 5
Thu Dec 13 12:10:26 2018:    Gratuitous ARP refresh timer = 0
Thu Dec 13 12:10:26 2018:    Gratuitous ARP refresh repeat = 1
Thu Dec 13 12:10:26 2018:    Gratuitous ARP lower priority delay = 5
Thu Dec 13 12:10:26 2018:    Gratuitous ARP lower priority repeat = 5
Thu Dec 13 12:10:26 2018:    Send advert after receive lower priority advert = true
Thu Dec 13 12:10:26 2018:    Send advert after receive higher priority advert = false
Thu Dec 13 12:10:26 2018:    Virtual Router ID = 148
Thu Dec 13 12:10:26 2018:    Priority = 1
Thu Dec 13 12:10:26 2018:    Advert interval = 1 sec
Thu Dec 13 12:10:26 2018:    Accept enabled
Thu Dec 13 12:10:26 2018:    Preempt disabled
Thu Dec 13 12:10:26 2018:    Promote_secondaries disabled
Thu Dec 13 12:10:26 2018:    Authentication type = SIMPLE_PASSWORD
Thu Dec 13 12:10:26 2018:    Password = 0RXbQYFF
Thu Dec 13 12:10:26 2018:    Tracked scripts = 1
Thu Dec 13 12:10:26 2018:      check_alive weight 0
Thu Dec 13 12:10:26 2018:    Virtual IP = 1
Thu Dec 13 12:10:26 2018:      10.52.41.98/32 dev ens160 scope global
Thu Dec 13 12:10:26 2018: ------< VRRP Scripts >------
Thu Dec 13 12:10:26 2018:  VRRP Script = check_alive
Thu Dec 13 12:10:26 2018:    Command = /check_alive.sh
Thu Dec 13 12:10:26 2018:    Interval = 2 sec
Thu Dec 13 12:10:26 2018:    Timeout = 0 sec
Thu Dec 13 12:10:26 2018:    Weight = 0
Thu Dec 13 12:10:26 2018:    Rise = 10
Thu Dec 13 12:10:26 2018:    Fall = 2
Thu Dec 13 12:10:26 2018:    Insecure = no
Thu Dec 13 12:10:26 2018:    Status = INIT
Thu Dec 13 12:10:26 2018:    Script uid:gid = 0:0
Thu Dec 13 12:10:26 2018: ------< NIC >------
Thu Dec 13 12:10:26 2018:  Name = lo
Thu Dec 13 12:10:26 2018:  index = 1
Thu Dec 13 12:10:26 2018:  IPv4 address = 127.0.0.1
Thu Dec 13 12:10:26 2018:  IPv6 address = ::
Thu Dec 13 12:10:26 2018:  is UP
Thu Dec 13 12:10:26 2018:  is RUNNING
Thu Dec 13 12:10:26 2018:  MTU = 65536
Thu Dec 13 12:10:26 2018:  HW Type = LOOPBACK
Thu Dec 13 12:10:26 2018: ------< NIC >------
Thu Dec 13 12:10:26 2018:  Name = ens160
Thu Dec 13 12:10:26 2018:  index = 2
Thu Dec 13 12:10:26 2018:  IPv4 address = 10.52.41.100
Thu Dec 13 12:10:26 2018:  IPv6 address = fe80::250:56ff:fea1:6a2c
Thu Dec 13 12:10:26 2018:  MAC = 00:50:56:a1:6a:2c
Thu Dec 13 12:10:26 2018:  is UP
Thu Dec 13 12:10:26 2018:  is RUNNING
Thu Dec 13 12:10:26 2018:  MTU = 1500
Thu Dec 13 12:10:26 2018:  HW Type = ETHERNET
Thu Dec 13 12:10:26 2018: ------< NIC >------
Thu Dec 13 12:10:26 2018:  Name = ens161
Thu Dec 13 12:10:26 2018:  index = 3
Thu Dec 13 12:10:26 2018:  IPv4 address = 10.52.42.100
Thu Dec 13 12:10:26 2018:  IPv6 address = fe80::250:56ff:fea1:7d07
Thu Dec 13 12:10:26 2018:  MAC = 00:50:56:a1:7d:07
Thu Dec 13 12:10:26 2018:  is UP
Thu Dec 13 12:10:26 2018:  is RUNNING
Thu Dec 13 12:10:26 2018:  MTU = 1500
Thu Dec 13 12:10:26 2018:  HW Type = ETHERNET
Thu Dec 13 12:10:26 2018: ------< NIC >------
Thu Dec 13 12:10:26 2018:  Name = ens224
Thu Dec 13 12:10:26 2018:  index = 4
Thu Dec 13 12:10:26 2018:  IPv4 address = 10.52.40.100
Thu Dec 13 12:10:26 2018:  IPv6 address = fe80::250:56ff:fea1:236e
Thu Dec 13 12:10:26 2018:  MAC = 00:50:56:a1:23:6e
Thu Dec 13 12:10:26 2018:  is UP
Thu Dec 13 12:10:26 2018:  is RUNNING
Thu Dec 13 12:10:26 2018:  MTU = 1500
Thu Dec 13 12:10:26 2018:  HW Type = ETHERNET
Thu Dec 13 12:10:26 2018: ------< NIC >------
Thu Dec 13 12:10:26 2018:  Name = ens256
Thu Dec 13 12:10:26 2018:  index = 5
Thu Dec 13 12:10:26 2018:  IPv4 address = 10.52.44.100
Thu Dec 13 12:10:26 2018:  IPv6 address = fe80::250:56ff:fea1:2012
Thu Dec 13 12:10:26 2018:  MAC = 00:50:56:a1:20:12
Thu Dec 13 12:10:26 2018:  is UP
Thu Dec 13 12:10:26 2018:  is RUNNING
Thu Dec 13 12:10:26 2018:  MTU = 1500
Thu Dec 13 12:10:26 2018:  HW Type = ETHERNET
Thu Dec 13 12:10:26 2018: ------< NIC >------
Thu Dec 13 12:10:26 2018:  Name = docker0
Thu Dec 13 12:10:26 2018:  index = 6
Thu Dec 13 12:10:26 2018:  IPv4 address = 172.17.0.1
Thu Dec 13 12:10:26 2018:  IPv6 address = ::
Thu Dec 13 12:10:26 2018:  MAC = 02:42:b0:8a:93:e7
Thu Dec 13 12:10:26 2018:  is UP
Thu Dec 13 12:10:26 2018:  MTU = 1500
Thu Dec 13 12:10:26 2018:  HW Type = ETHERNET
Thu Dec 13 12:10:26 2018: Using LinkWatch kernel netlink reflector...
Thu Dec 13 12:10:26 2018: VRRP_Instance(kolla_internal_vip_148) Entering BACKUP STATE
Thu Dec 13 12:10:26 2018: /check_alive.sh exited with status 1
Thu Dec 13 12:10:28 2018: /check_alive.sh exited with status 1
Thu Dec 13 12:10:30 2018: VRRP_Instance(kolla_internal_vip_148) Now in FAULT state
Thu Dec 13 12:10:30 2018: /check_alive.sh exited with status 1
Thu Dec 13 12:10:32 2018: /check_alive.sh exited with status 1
[message repeats until I stop the container]

就是這樣，兩個keepalived 實例都處於FAULT 狀態，IP 地址未在任何VM 上啟動。

我經歷了這個問題和答案，即使我在日誌文件中沒有錯誤消息：

  • keepalived_virtual_router_id 已更改並且是唯一的
  • 我又跑kolla-genpwd了。我確認keepalived_password設置在/etc/kolla/passwords.yml
  • kolla_internal_vip_address可從 訪問network_interface。該介面上的主 IP 在同一網路中。我可以手動設置額外的 IP 地址，它可以工作。
  • kolla-ansible prechecks通行證
  • selinux 在 Ubuntu 上不活躍

在管理程序方面，我嘗試啟用Promiscuous mode該介面的埠組。這並沒有什麼不同。

所以，在裸機上遇到同樣的問題後，我更深入地研究了這個問題。原來它不是keepalived，而是有問題的haproxy容器。

haproxy 容器不斷重啟是因為 haproxy 是用命令行參數啟動的-W，而在容器中自帶的 haproxy 版本中是不存在的。

Running command: '/usr/sbin/haproxy -W -db -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid'
+ exec /usr/sbin/haproxy -W -db -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
HA-Proxy version 1.6.3 2015/12/25
Copyright 2000-2015 Willy Tarreau <willy@haproxy.org>

Usage : haproxy [-f <cfgfile>]* [ -vdVD ] [ -n <maxconn> ] [ -N <maxpconn> ]
       [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]
       -v displays version ; -vv shows known build options.
       -d enters debug mode ; -db only disables background mode.
       -dM[<byte>] poisons memory with <byte> (defaults to 0x50)
       -V enters verbose mode (disables quiet mode)
       -D goes daemon ; -C changes to <dir> before loading files.
       -q quiet mode : don't display messages
       -c check mode : only check config files and exit
       -n sets the maximum total # of connections (2000)
       -m limits the usable amount of memory (in MB)
       -N sets the default, per-proxy maximum # of connections (2000)
       -L set local peer name (default to hostname)
       -p writes pids of all children to this file
       -de disables epoll() usage even when available
       -dp disables poll() usage even when available
       -dS disables splice usage (broken on old kernels)
       -dV disables SSL verify on servers side
       -sf/-st [pid ]* finishes/terminates old pids.

因此，haproxy 容器不斷重啟。另一方面，keepalived 容器配置了 keepalived 的檢查腳本，該腳本不斷退出並出現錯誤：

Fri Feb 15 08:17:14 2019: /check_alive.sh exited with status 1
Keepalived_vrrp[12]: /check_alive.sh exited with status 1

這個檢查腳本非常簡單，它通過一個套接字文件檢查 haproxy 的狀態：

#!/bin/bash

# This will return 0 when it successfully talks to the haproxy daemon via the socket
# Failures return 1

echo "show info" | socat unix-connect:/var/lib/kolla/haproxy/haproxy.sock stdio > /dev/null

所以……只要使用無效參數呼叫 haproxy 並且沒有啟動，keepalived 就會保持FAULT狀態，沒有浮動 IP。

使用grep -R "haproxy -W" *我發現 haproxy 的命令行是在文件中定義的/usr/local/share/kolla-ansible/ansible/roles/haproxy/templates/haproxy.json.j2。-W我從命令行中刪除了參數，這導致 haproxy 正常啟動，keepalived 更改為MASTER配置浮動 IP 的狀態。

Launchpad 上已經有關於此問題的錯誤報告。評論中還有一個略有不同的解決方案（更改相同的文件）。

當文件更新時，這種修改當然會被恢復。如果您有同樣的問題，請登錄 Launchpad 並標記該錯誤（已於 2018-06-08 報告）影響您，以便優先處理並修復。

引用自：https://serverfault.com/questions/944175

相關問答

Ssl

HAProxy 作為 TCP 負載平衡器（SSL 直通）不起作用？

  • April 3, 2022
檢視問答
Openstack

OVN 集群執行狀況命令

  • November 21, 2021
檢視問答
Load-Balancing

HAproxy 503 Service Unavailable No server is available to handle this request

  • March 21, 2021
檢視問答
Load-Balancing

使用 Keepalived 進行主動/主動 HAProxy 設置的任何問題

  • April 27, 2020
檢視問答
Haproxy

HAProxy 退出時，keepalived track_script 為什麼不重新啟動keepalived？

  • February 2, 2018
檢視問答
Ip

主動/被動 HA 代理：浮動 IP 不是“浮動”

  • July 6, 2017
檢視問答