Re: Fine Tuning Apache 2.4 on AWS EC2 t2.medium Instance

[Tony DiLoreto <tony@xxxxxxxxxxxxxxxxxxxxxxxx>]

Hi chris,

Apologies for the delayed response. So I have the base installation of apache 2.4 within Amazon EC2 (via these instructions: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-LAMP.html) which loads these modules by default, among a few others:

LoadModule access_compat_module modules/mod_access_compat.so

LoadModule actions_module modules/mod_actions.so

LoadModule alias_module modules/mod_alias.so

LoadModule allowmethods_module modules/mod_allowmethods.so

LoadModule auth_basic_module modules/mod_auth_basic.so

LoadModule auth_digest_module modules/mod_auth_digest.so

LoadModule authn_anon_module modules/mod_authn_anon.so

LoadModule authn_core_module modules/mod_authn_core.so

LoadModule authn_dbd_module modules/mod_authn_dbd.so

LoadModule authn_dbm_module modules/mod_authn_dbm.so

LoadModule authn_file_module modules/mod_authn_file.so

LoadModule authn_socache_module modules/mod_authn_socache.so

LoadModule authz_core_module modules/mod_authz_core.so

LoadModule authz_dbd_module modules/mod_authz_dbd.so

LoadModule authz_dbm_module modules/mod_authz_dbm.so

LoadModule authz_groupfile_module modules/mod_authz_groupfile.so

LoadModule authz_host_module modules/mod_authz_host.so

LoadModule authz_owner_module modules/mod_authz_owner.so

LoadModule authz_user_module modules/mod_authz_user.so

LoadModule autoindex_module modules/mod_autoindex.so

LoadModule cache_module modules/mod_cache.so

LoadModule cache_disk_module modules/mod_cache_disk.so

LoadModule cache_socache_module modules/mod_cache_socache.so

LoadModule data_module modules/mod_data.so

LoadModule dbd_module modules/mod_dbd.so

LoadModule deflate_module modules/mod_deflate.so

LoadModule dir_module modules/mod_dir.so

LoadModule dumpio_module modules/mod_dumpio.so

LoadModule echo_module modules/mod_echo.so

LoadModule env_module modules/mod_env.so

LoadModule expires_module modules/mod_expires.so

LoadModule ext_filter_module modules/mod_ext_filter.so

LoadModule filter_module modules/mod_filter.so

LoadModule headers_module modules/mod_headers.so

LoadModule include_module modules/mod_include.so

LoadModule info_module modules/mod_info.so

LoadModule log_config_module modules/mod_log_config.so

LoadModule logio_module modules/mod_logio.so

LoadModule macro_module modules/mod_macro.so

LoadModule mime_magic_module modules/mod_mime_magic.so

LoadModule mime_module modules/mod_mime.so

LoadModule negotiation_module modules/mod_negotiation.so

LoadModule remoteip_module modules/mod_remoteip.so

LoadModule reqtimeout_module modules/mod_reqtimeout.so

LoadModule request_module modules/mod_request.so

LoadModule rewrite_module modules/mod_rewrite.so

LoadModule setenvif_module modules/mod_setenvif.so

LoadModule slotmem_plain_module modules/mod_slotmem_plain.so

LoadModule slotmem_shm_module modules/mod_slotmem_shm.so

LoadModule socache_dbm_module modules/mod_socache_dbm.so

LoadModule socache_memcache_module modules/mod_socache_memcache.so

LoadModule socache_shmcb_module modules/mod_socache_shmcb.so

LoadModule status_module modules/mod_status.so

LoadModule substitute_module modules/mod_substitute.so

LoadModule suexec_module modules/mod_suexec.so

# This module will cause Apache to fail to load if there is no DNS

# LoadModule unique_id_module modules/mod_unique_id.so

LoadModule unixd_module modules/mod_unixd.so

LoadModule userdir_module modules/mod_userdir.so

LoadModule version_module modules/mod_version.so

LoadModule vhost_alias_module modules/mod_vhost_alias.so

LoadModule watchdog_module modules/mod_watchdog.so

It is using MPM_Prefork by default, with default values (nothing specified). I could setup a phpinfo page privately if you'd like as well. I have requested repeatedly to Amazon to put out a page that is more comprehensive than their basic MPM tuning page, for following the instructions does not fix it. Ironically the server grinds to a halt even if no requests are being made to it.

IMHO, even with the default installation Apache eats up too much memory. It would be MUCH simpler if there was a MAX_MEMORY_PERCENT directive you can place in httpd.conf, which specifies the percentage of free memory Apache is allowed to consume. Any thoughts?

On Sat, Oct 1, 2016 at 1:59 PM, Christopher Schultz <chris@xxxxxxxxxxxxxxxxxxxxxx> wrote:

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Tony,

On 10/1/16 4:36 PM, Tony DiLoreto wrote:
> All,
>
> I'm at my wits end trying to simply run Apache 2.4 on my Amazon
> EC2 server. There are dozens of stackoverflow and websites, but
> the suggestions do not seem to work on my instance.
>
> *Hardware*
>
> * Amazon EC2 Instance * t2.medium (2 VCPUs, 4GB RAM, 1GB Swap
> added)
>
> *Software*
>
> * Base Amazon Unix distro * Apache 2.4, PHP 5 (no mysql) via
> Amazon instructions:
> http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-LAMP.html
>
>  Shortly after installation, I'm finding the serve grinds to a
> halt. Apache eats 95% of total memory, to the point where I cannot
> run base unix commands like 'ls'. Looking for recommendations on:
>
> * which modules I can safely disable (those that few very users
> need) * _exact_ values for maxConnectionsPerChild,
> maxRequestWorkers, etc.
>
> That leaves me with 1GB free for the operating system. My
> Wordpress website will not be serving more than 10k
> pageviews/month, and never more than 20 at any given moment.
>
> Any recommendations?? Thanks in advance!

Weird, httpd takes up 95% of RAM? What modules do you have enabled?
Does it eat all that RAM if you don't make any requests? Which MPM are
you using?

What if you disable mod_php and temporarily disable Wordpress? Does it
behave nicely, then?

- -chris
-----BEGIN PGP SIGNATURE-----
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iQIcBAEBCAAGBQJX8CO3AAoJEBzwKT+lPKRYh3sQAMHZLeDqI/F80Ksdi1z+BrOf
ZZ6t2regMseG5cTUtNFIJMb5LmOy56JjvxPZXmu4o9kyRPqSs3he3bxwBI4aAHWR
gVQBxWonqFkwsBEpr4u3q30nZN8LchZGPXTQcw7+/SLbP7EBaFnTiEhPPEwj374H
XFEyTkh0tv3Hd4q85W8OwgcENHm8IyTA8FuqhUr0xtVsfxhA6xvqcrz34rdYoYW5
FlHQclK7t2pqsSWjRJh6fnFwrS8u8xEtsFfRWhinkNAJpOCch4vnKOgSWeBF3zH+
tuNiGbP3FX+Ge85WZFLY68xCUSPOWPPPl8du7BSsAX2f2JLyBjtt12435qPE2tez
b1hHMrrkQZGyWFzxl4GR5kkH9Qp/nTkqFLBCPcFzH7DHHJJJC4NyYPTff8PRDFrT
Xw5BIkghiT7+d1hPLiUyaGrsu9leZUVIozXT3KvgPIsQiIff6gZovj2QEgM6QZT8
qhEkHjj41RZksNHJ41BxLiZIqclkXlbWdfIBUtzeRYWEZG/FCwLbzH+B1mfj0nJn
hqGC0J8lZs3d2l/Ws/sNu9xz5qGv/ZcKSynToZXq8Pb/zorjSJGqOS13BTeh0Dz2
PsDBkcPQ4jymVU/Vt668q3Jm7TI3Ip0cigKxzBhA9cUJebuIv9YI98zBnuPRh5RE
E62pt8xp0IX25O3M0GxX
=dWd7
-----END PGP SIGNATURE-----

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx

--

Tony DiLoreto

President & CEO

Migliore Technologies Inc

716.997.2396

tony@xxxxxxxxxxxxxxxxxxxxxxxx

miglioretechnologies.com

The best in the business...period!