haproxy 重启时无法绑定套接字

Question

我正在通过以下命令重新启动 HAproxy

haproxy -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf $(cat /var/run/haproxy.pid)

但我收到以下消息

[ALERT] 183/225022 (9278) : Starting proxy appli1-rewrite: cannot bind socket
[ALERT] 183/225022 (9278) : Starting proxy appli2-insert: cannot bind socket
[ALERT] 183/225022 (9278) : Starting proxy appli3-relais: cannot bind socket
[ALERT] 183/225022 (9278) : Starting proxy appli4-backup: cannot bind socket
[ALERT] 183/225022 (9278) : Starting proxy ssl-relay: cannot bind socket
[ALERT] 183/225022 (9278) : Starting proxy appli5-backup: cannot bind socket

我的 haproxy.cfg 文件看起来像以下

global
    log 127.0.0.1    local0
    log 127.0.0.1    local1 notice
    #log loghost    local0 info
    maxconn 4096
    #chroot /usr/share/haproxy
    user haproxy
    group haproxy
    daemon
    #debug
    #quiet

defaults
    log    global
    mode    http
    option    httplog
    option    dontlognull
    retries    3
    option redispatch
    maxconn    2000
    contimeout    5000
    clitimeout    50000
    srvtimeout    50000

listen    appli1-rewrite 0.0.0.0:10001
    cookie    SERVERID rewrite
    balance    roundrobin
    server    app1_1 192.168.34.23:8080 cookie app1inst1 check inter 2000 rise 2 fall 5
    server    app1_2 192.168.34.32:8080 cookie app1inst2 check inter 2000 rise 2 fall 5
    server    app1_3 192.168.34.27:8080 cookie app1inst3 check inter 2000 rise 2 fall 5
    server    app1_4 192.168.34.42:8080 cookie app1inst4 check inter 2000 rise 2 fall 5

listen    appli2-insert 0.0.0.0:10002
    option    httpchk
    balance    roundrobin
    cookie    SERVERID insert indirect nocache
    server    inst1 192.168.114.56:80 cookie server01 check inter 2000 fall 3
    server    inst2 192.168.114.56:81 cookie server02 check inter 2000 fall 3
    capture cookie vgnvisitor= len 32

    option    httpclose        # disable keep-alive
    rspidel ^Set-cookie:\ IP=    # do not let this cookie tell our internal IP address

listen    appli3-relais 0.0.0.0:10003
    dispatch 192.168.135.17:80

listen    appli4-backup 0.0.0.0:10004
    option    httpchk /index.html
    option    persist
    balance    roundrobin
    server    inst1 192.168.114.56:80 check inter 2000 fall 3
    server    inst2 192.168.114.56:81 check inter 2000 fall 3 backup

listen    ssl-relay 0.0.0.0:8443
    option    ssl-hello-chk
    balance    source
    server    inst1 192.168.110.56:443 check inter 2000 fall 3
    server    inst2 192.168.110.57:443 check inter 2000 fall 3
    server    back1 192.168.120.58:443 backup

listen    appli5-backup 0.0.0.0:10005
    option    httpchk *
    balance    roundrobin
    cookie    SERVERID insert indirect nocache
    server    inst1 192.168.114.56:80 cookie server01 check inter 2000 fall 3
    server    inst2 192.168.114.56:81 cookie server02 check inter 2000 fall 3
    server    inst3 192.168.114.57:80 backup check inter 2000 fall 3
    capture cookie ASPSESSION len 32
    srvtimeout    20000

    option    httpclose        # disable keep-alive
    option  checkcache        # block response if set-cookie & cacheable

    rspidel ^Set-cookie:\ IP=    # do not let this cookie tell our internal IP address

    #errorloc    502    http://192.168.114.58/error502.html
    #errorfile    503    /etc/haproxy/errors/503.http
    errorfile    400    /etc/haproxy/errors/400.http
    errorfile    403    /etc/haproxy/errors/403.http
    errorfile    408    /etc/haproxy/errors/408.http
    errorfile    500    /etc/haproxy/errors/500.http
    errorfile    502    /etc/haproxy/errors/502.http
    errorfile    503    /etc/haproxy/errors/503.http
    errorfile    504    /etc/haproxy/errors/504.http

我的方法有什么问题

Answer 1

在启用了 SELinux（应该启用）的 RedHat Linux 上，只需启用haproxy_connect_any布尔值，它允许 haproxy 将套接字连接到任何端口：

setsebool -P haproxy_connect_any on

Answer 2

两种选择：

1. 您不是以 root 身份运行；sudo如果您没有以 root 身份运行（请检查） ，则可能需要在命令前面加上才能在命令行上启动它whoami。
2. 另一个进程（可能是 HAProxy 的另一个实例）已绑定到这些端口。检查与netstat -apn.