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第 37 章 Networking
rsyncutility cannot be run as a socket-activated service because the
rsyncd@.servicefile is missing from the rsync package. Consequently, the
systemctl start rsyncd.socketcommand does not work. However, running
rsyncas a daemon by executing the
systemctl start rsyncd.servicecommand works as expected.
- The libocrdma package is not included in the default package set of the InfiniBand Support group. Consequently, when users select the InfiniBand Support group and are expecting RDMA over Converged Ethernet (RoCE) to work on Emulex OneConnect adapters, the necessary driver,
libocrdma, is not installed by default. On first boot, the user can manually install the missing package by issuing this command:
~]#As a result, the user will now be able to use the Emulex OneConnect devices in RoCE mode.
yum install libocrdma
vsftpddaemon does not currently support ciphers suites based on the Elliptic Curve Diffie–Hellman Exchange (ECDHE) key-exchange protocol. Consequently, when
vsftpdis configured to use such suites, the connection is refused with a
no shared cipher SSLalert.
- Red Hat Enterprise Linux 7 introduces the arptables packages, which replace the arptables_jf packages included in Red Hat Enterprise Linux 6. All users of arptables are advised to update their scripts because the syntax of this version differs from arptables_jf.
- It is not possible to connect to any Wi-Fi Protected Access (WPA) Enterprise Access Point (AP) that requires MD5-signed certificates. To work around this problem, copy the
wpa_supplicant.servicefile from the
/usr/lib/systemd/system/directory to the
/etc/systemd/system/directory and add the following line to the
Servicesection of the file:
Environment=OPENSSL_ENABLE_MD5_VERIFY=1Then run the
systemctl daemon-reloadcommand as root to reload the service file.
重要Note that MD5 certificates are highly insecure and Red Hat does not recommend using them.