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Home Backend Development PHP Tutorial Load balancing practice of nginx as a php site

Load balancing practice of nginx as a php site

Aug 08, 2016 am 09:28 AM
handler header proxy session

A lamp application I am responsible for needs to improve high availability, so I chose nginx as the load balancing tool.
nginx needs to modify the nginx.conf configuration:

<code>upstream qss {
     <span>82</span>         server <span>10.46</span><span>.194</span><span>.17</span>:<span>8088</span> weight<span>=</span><span>5</span>;
     <span>83</span>         server <span>10.46</span><span>.192</span><span>.41</span>:<span>8080</span> weight<span>=</span><span>5</span>;
     <span>84</span>     }
     <span>85</span><span>86</span>     server {
     <span>87</span>         listen <span>8079</span>;
     <span>88</span>         server_name cq01<span>-tdw</span><span>-bfe28</span><span>.</span>cq01<span>.</span>baidu<span>.</span>com;
     <span>89</span>         underscores_in_headers <span>on</span>;
     <span>90</span>         ignore_invalid_headers off;
     <span>91</span><span>92</span>         location <span>/</span> {
     <span>93</span>             proxy_set_header Host <span>$host</span>;
     <span>94</span>             proxy_set_header X<span>-Real</span><span>-IP</span><span>$remote_addr</span>;
     <span>95</span>             proxy_set_header X<span>-Forwarded</span><span>-For</span><span>$proxy_add_x_forwarded_for</span>;
     <span>96</span>             proxy_pass http:<span>//qss;</span><span>97</span>         }</code>

Among them, underscores_in_headers on means that header fields containing underscores are considered legal. If there are underscore fields in the header, this must be set, otherwise it will be prompted in nginx's error_log mistake.

In addition, the site has a session, so the session should be shared in each php module. You can modify the configuration of the php.ini file. It was previously saved in a tmp file. Now, it can be saved in memcached:

<code><span>732</span> extension_dir = <span>"/home/qec/vlamp/build/php/output/lib/php/extensions/no-debug-non-zts-20100525/"</span><span>733</span> extension = memcache<span>.so</span><span>1365</span> [Session]
   <span>1366</span><span>; Handler used to store/retrieve data.</span><span>1367</span><span>; http://php.net/session.save-handler</span><span>1368</span><span>; session.save_handler = files</span><span>1369</span> session<span>.save</span>_handler = memcache
   <span>1370</span> memcache<span>.hash</span>_strategy = <span>"consistent"</span><span>1371</span> session<span>.save</span>_path = <span>"tcp://10.216.122.21:11211"</span></code>

Then, that's it.

The above introduces the load balancing practice of nginx as a PHP site, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.

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