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(/questions/ask) Ask Question     (2022-12-02 03:38:50Z) Asked 2 years, 2 months ago  Modified (?lastactivity) (2023-05-24 08:55:58Z) 1 year, 9 months ago  (Viewed 741 times) Viewed 741 times         This question shows research effort; it is useful and clear  (70:3:31e,16:8a19d4d8da6d1e47,10:1740032418,16:b52e19551b22cf2d,8:74650639,9468f4cbed444654580a13dce9126f7e98d15e837c040e020df0d82872f61473) 0  (This question does not show any research effort; it is unclear or not useful)    (70:3:31e,16:f57ee4b8e4a91566,10:1740032418,16:d7d5945b33e43a56,8:74650639,b5fd8c51bd6afd51c1bc76c9bfd3aab5edbb0eabfb52ad699a4c95afdb973383)      Save this question.  (/posts/74650639/timeline)    Show activity on this post.    this is my config (https://i.sstatic.net/3wArZ.png) enter image description here  log_format mqtt '$remote_addr [$time_local] $protocol $status $bytes_received ' 
                '$bytes_sent $upstream_addr';

upstream hive_mq {
    server 192.168.11.200:1883; #node1
    server 127.0.0.1:1883; #node2
    zone tcp_mem 64k;
}

match mqtt_conn {
        # Send CONNECT packet with client ID "nginx health check"
        send   \x10\x20\x00\x06\x4d\x51\x49\x73\x64\x70\x03\x02\x00\x3c\x00\x12\x6e\x67\x69\x6e\x78\x20\x68\x65\x61\x6c\x74\x68\x20\x63\x68\x65\x63\x6b;
        expect \x20\x02\x00\x00; # Entire payload of CONNACK packet
}

server {
    listen 8081;
    proxy_pass hive_mq;
    proxy_connect_timeout 1s;
    health_check match=mqtt_conn;

    access_log /var/log/nginx/mqtt_access.log mqtt;
    error_log  /var/log/nginx/mqtt_error.log; # Health check notifications
}   but when I reload the setting and it return failed as following (https://i.sstatic.net/v8xVL.png) enter image description here  nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
  Drop-In: /usr/lib/systemd/system/nginx.service.d
           └─php-fpm.conf
   Active: failed (Result: exit-code) since Fri 2022-12-02 03:20:49 UTC; 2s ago
  Process: 51793 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
  Process: 51821 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=1/FAILURE)
  Process: 51819 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
 Main PID: 51794 (code=killed, signal=KILL)

Dec 02 03:20:49 localhost systemd[1]: Starting The nginx HTTP and reverse proxy server...
Dec 02 03:20:49 localhost nginx[51821]: nginx: [emerg] unknown directive "match" in /etc/nginx/nginx.conf:171
Dec 02 03:20:49 localhost nginx[51821]: nginx: configuration file /etc/nginx/nginx.conf test failed
Dec 02 03:20:49 localhost systemd[1]: nginx.service: Control process exited, code=exited status=1
Dec 02 03:20:49 localhost systemd[1]: nginx.service: Failed with result 'exit-code'.
Dec 02 03:20:49 localhost systemd[1]: Failed to start The nginx HTTP and reverse proxy server.   noted I have include modules/*.conf and the modules are (https://i.sstatic.net/D4VQp.png) enter image description here  Do I miss someting? How to address the config problem in Nginx?  (/questions/tagged/nginx) (show questions tagged 'nginx') nginx      (/q/74650639) (Short permalink to this question) Share  Share a link to this question     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     (/posts/74650639/edit) () Improve this question  Follow (70:3:31e,16:3f61d86af20f15a8,10:1740032418,16:f9b8a121332b48ca,8:74650639,69b62ebd24bbdab8769a58e04dd1734451c80187fb8fd306a0f18fc1b4b3106b)  Follow this question to receive notifications       asked (2022-12-02 03:38:50Z) Dec 2, 2022 at 3:38   (/users/19314484/puncheung-tong) (puncheung tong's user avatar)    (/users/19314484/puncheung-tong) puncheung tong puncheung tong (reputation score) 1 (1 bronze badge)  1  1 bronze badge        1   Are you using the commercial version of Nginx or the free version? – (/users/4862445/richard-smith) (49,742 reputation) Richard Smith  Commented (2022-12-02 10:21:23Z, License: CC BY-SA 4.0) Dec 2, 2022 at 10:21        (Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.) Add a comment |  (Expand to show all comments on this post)          1 Answer 1   Sorted by:  (/questions/74650639/nginx-emerg-unknown-directive-match-why-does-it-appear?answertab=scoredesc#tab-top) Reset to default   (scoredesc) Highest score (default)  (trending) Trending (recent votes count more)  (modifieddesc) Date modified (newest first)  (createdasc) Date created (oldest first)            This answer is useful  (70:3:31e,16:cb0377c508849784,10:1740032418,16:c05c53ff1b07c6cd,8:76321539,2dfe77e3461b9fa5d69be461c9244fb441e65bb2345b28ea4c0a4fcae6dbc5f7) 0  (This answer is not useful)    (70:3:31e,16:394ac2c6c740f5c9,10:1740032418,16:ff1cffce94a94294,8:76321539,f2e898ad846607ab32085c10bb69c63e8e3858260b659cf12adb7d39c507415c)      Save this answer.  (Loading when this answer was accepted…)     (/posts/76321539/timeline)    Show activity on this post.    The Nginx commercial license does not allow adding this type of directive.I recommend to try with Nginx Plus.   (/a/76321539) (Short permalink to this answer) Share  Share a link to this answer     Copy link (https://creativecommons.org/licenses/by-sa/4.0/) (The current license for this post: CC BY-SA 4.0) CC BY-SA 4.0     (/posts/76321539/edit) () Improve this answer  Follow (70:3:31e,16:7977fbae17fd6808,10:1740032418,16:11a8635e52bdafbf,8:76321539,41bfe8bae8963af3d0917823c0ebde9a91562aaf81f5532fd32bdc3b300ae87c)  Follow this answer to receive notifications       (/posts/76321539/revisions) (show all edits to this post) edited (2023-05-24 08:55:58Z) May 24, 2023 at 8:55    (/users/7733418/yunnosch) (Yunnosch's user avatar)    (/users/7733418/yunnosch) Yunnosch (reputation score 26,753) 26.8k (9 gold badges)  9  9 gold badges (44 silver badges)  44  44 silver badges (62 bronze badges)  62  62 bronze badges     answered (2023-05-24 08:31:56Z) May 24, 2023 at 8:31   (/users/21952207/pedro) (Pedro's user avatar)    (/users/21952207/pedro) Pedro Pedro (reputation score) 1        2   Welcome to Stack Overflow! Please phrase this as an explained conditional answer, in order to avoid the impression of asking a clarification question instead of answering (for which a comment should be used instead of an answer, compare (https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead) (why do i need 50 reputation to comment what can i do instead) meta.stackexchange.com/questions/214173/… ). For example like "If your problem is ... then the solution is to .... because .... ." I could not and only turned it into a much too brief "I recommend ..." answer. Better improve it. – (/users/7733418/yunnosch) (26,753 reputation) Yunnosch  Commented (2023-05-24 08:54:48Z, License: CC BY-SA 4.0) May 24, 2023 at 8:54   (this comment was edited 1 time)          Your answer does not really solve the author's problem. Please avoid putting such an answer. Instead, use a comment and THEN post an answer after the author accepted your "fact". – (/users/19270168/openwld) (916 reputation) openwld  Commented (2023-05-24 12:38:20Z, License: CC BY-SA 4.0) May 24, 2023 at 12:38        (Use comments to ask for more information or suggest improvements. Avoid comments like “+1” or “thanks”.) Add a comment |  (Expand to show all comments on this post)          (74650639) (false) () Your Answer  (False)                                Reminder: Answers generated by artificial intelligence tools are not allowed on Stack Overflow. (/help/gen-ai-policy) Learn more       (true)       Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question . Provide details and share your research!  But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience.  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