haveged

- ZXVF apache-tomcat-8.0.33.tar.gz-c/opt/tomcat--strip-components=1 STEP5 permission Settings Cd/opt/tomcat sudo chmod-r tomcat. sudo chgrp-r tomcat conf chmod g+rwx conf sudo chmod g+r conf/* sudo chown-r tomcat Logs/temp/webapps /work/ Step6 Create systemd unit files for Tomcat sudo vi/etc/systemd/system/tomcat.service The contents are as follows: [Unit] Description=apache Tomcat Web Application Container after=syslog.target network.target [Service] type= Forking Environment=java_home=/

>/dev/null [1] 2759[root@home tmp]# pstree-psystemd (1)-+-agetty (157) | -agetty (163) |-avahi-daemon (129)---avahi-daemon (134) |-AVAHI-DNSCONFD (|-crond) | | Dbus-daemon (|-haveged) |-ifplugd (126) |-nginx (226)---nginx (227) |-ntpd (223) | | Python (2727) |-rngd (124) |-sshd (216)---sshd (2683)---bash (2690)-+-ping (2759) | '-pstree (2760) |-systemd (2687)---(sd-pam) (26

file. The correct method is echo "xxx"> filename 2. No data is found in Kibana, but elasticsearch contains It may be that the data query time is incorrect. 3. Logstash startup is very slow Install the epel source, install haveged, start it, and restart logstash. 4. logstash installed in Yum can be started, but data cannot be imported to elasticsearch. Generally, elasticsearch and kibana installed on yum have no major problems, but logstash does not w

the terminal connected to the user, when the terminal exits or is disconnected, the process also ends.Let's take a look at the process status of my Linux testing machine: [root@home tmp]# ping www.baidu.com > /dev/null [1] 2759[root@home tmp]# pstree -psystemd(1)-+-agetty(157) |-agetty(163) |-avahi-daemon(129)---avahi-daemon(134) |-avahi-dnsconfd(125) |-crond(121) |-dbus-daemon(130) |-haveged(128) |-ifplugd(126)

until it is available. This means that at that time/dev/urandom has sown, you can safely read the content from the/dev/urandom, you can use your password. Do notread from the/dev/random. OpenBSD: getentropy () arc4random_buf () Use CHACHA20 encryption Algorithm (not RC4) other Unix-like systems (including OS X) :/ Dev/urandomSolutions that rely on programs such as HAVEGED,EGD are not considered here.Password-safe random in C

: [root@home tmp]# ping www.baidu.com > /dev/null [1] 2759[root@home tmp]# pstree -psystemd(1)-+-agetty(157) |-agetty(163) |-avahi-daemon(129)---avahi-daemon(134) |-avahi-dnsconfd(125) |-crond(121) |-dbus-daemon(130) |-haveged(128) |-ifplugd(126) |-nginx(226)---nginx(227) |-ntpd(223) |-python(2727) |-rngd(124) |-sshd(216)---sshd(2683)---bash(2690)-+-ping(2759) | `-pstre

, to check the environment configuration, the installed Java is handled using/dev/urandom. Its mode is non-blocking when the entropy pool is empty. Obviously, more than that, you can find a description from the StackOverflow link that explains why the JDK uses/dev/urandom, but it doesn't work. Random number generator, based on SHA1PRNG. And SHA1PRNG relies heavily on high-quality seeds, and if the seeds are not good enough, the results of random numbers can be predicted. So developers need to ma

>/dev/null [1] 2759 [root@home tmp]# pstree-p systemd (1)-+- Agetty (157) |-agetty (163) |-avahi-daemon (129)---avahi-daemon (134) |-AVAHI-DNSCONFD (a) | Crond (121) |-dbus-daemon (130) |-haveged (128) |-ifplugd (126) |-nginx (---) nginx ( MB) | -NTPD (223) |-python (2727) |-rngd (124) |-sshd (216)---sshd (2683)---bash (2690)-+-ping (2759) | '-pstree (276