月度归档： 2020 年 8 月

安装安装ELRepo
导入公钥：

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

安装ELRepo 8

yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm

启用 ELRepo 源仓库：

yum --disablerepo="*" --enablerepo="elrepo-kernel" list available

安装新内核：

yum --enablerepo=elrepo-kernel install kernel-ml

/etc/sysctl.conf，加入如下代码：

net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr

保存，并执行 sysctl -p 即可。

或者

echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
sysctl -p

通过以下三条指令验证是否已经开启成功

sysctl net.ipv4.tcp_available_congestion_control
sysctl net.ipv4.tcp_congestion_control
lsmod | grep bbr

A number of extensions have been migrated to exclusively use pkg-config for the detection of library dependencies. Generally, this means that instead of using –with-foo-dir=DIR or similar only –with-foo is used. Custom library paths can be specified either by adding additional directories to PKG_CONFIG_PATH or by explicitly specifying compilation options through FOO_CFLAGS and FOO_LIBS.

The following extensions and SAPIs are affected:

• CURL:
  • –with-curl no longer accepts a directory.
• Enchant:
  • –with-enchant no longer accepts a directory.
• FPM:
  • –with-fpm-systemd now uses only pkg-config for libsystem checks. The libsystemd minimum required version is 209.
• GD:
  • –with-gd becomes –enable-gd (whether to enable the extension at all) and –with-external-gd (to opt into using an external libgd, rather than the bundled one).
  • –with-png-dir has been removed. libpng is required.
  • –with-zlib-dir has been removed. zlib is required.
  • –with-freetype-dir becomes –with-freetype
  • –with-jpeg-dir becomes –with-jpeg
  • –with-webp-dir becomes –with-webp
  • –with-xpm-dir becomes –with-xpm
• IMAP:
  • –with-kerberos-systemd no longer accepts a directory.
• Intl:
  • –with-icu-dir has been removed. If –enable-intl is passed, then libicu is always required.
• LDAP:
  • –with-ldap-sasl no longer accepts a directory.
• Libxml:
  • –with-libxml-dir has been removed.
  • –enable-libxml becomes –with-libxml.
  • –with-libexpat-dir has been renamed to –with-expat and no longer accepts a directory.
• Litespeed:
  • –with-litespeed becomes –enable-litespeed.
• Mbstring:
  • –with-onig has been removed. Unless –disable-mbregex has been passed, libonig is required.
• ODBC:
  • –with-iodbc no longer accepts a directory.
  • –with-unixODBC without a directory now uses pkg-config (preferred). Directory is still accepted for old versions without libodbc.pc.
• OpenSSL:
  • –with-openssl no longer accepts a directory.
• PCRE:
  • –with-pcre-regex has been removed. Instead –with-external-pcre is provided to opt into using an external PCRE library, rather than the bundled one.
• PDO_SQLite:
  • –with-pdo-sqlite no longer accepts a directory.
• Readline:
  • –with-libedit no longer accepts a directory.
• Sodium:
  • –with-sodium no longer accepts a directory.
• SQLite3:
  • –with-sqlite3 no longer accepts a directory.
• XSL:
  • –with-xsl no longer accepts a directory.
• Zip:
  • –with-libzip has been removed.
  • –enable-zip becomes –with-zip.