Core<\/strong>\u00a0list, copy the link to the “tar.gz”.<\/p>\nLet’s download the latest binary distribution to our home directory.<\/p>\n
First, change to your home directory:<\/p>\n
<\/code><\/pre>\n\n- cd ~<\/li>\n<\/ul>\n
<\/code><\/pre>\nThen use\u00a0wget<\/code>\u00a0and paste in the link to download the Tomcat 8 archive, like this (your mirror link will probably differ from the example):<\/p>\n<\/code><\/pre>\n\n- wget http:\/\/apache.mirrors.ionfish.org\/tomcat\/tomcat-8\/v8.5.9\/bin\/apache-tomcat-8.5.9.tar.gz<\/span><\/li>\n<\/ul>\n
<\/code><\/pre>\nWe’re going to install Tomcat to the\u00a0\/opt\/tomcat<\/code>\u00a0directory. Create the directory, then extract the the archive to it with these commands:<\/p>\n<\/code><\/pre>\n\n- sudo mkdir \/opt\/tomcat<\/li>\n
- sudo tar xvf apache-tomcat-8*tar.gz -C \/opt\/tomcat –strip-components=1<\/li>\n<\/ul>\n
<\/code><\/pre>\nNow we’re ready to set up the proper user permissions.<\/p>\n
Update Permissions<\/h3>\n
The\u00a0tomcat<\/code>\u00a0user that we set up needs to have the proper access to the Tomcat installation. We’ll set that up now.<\/p>\nChange to the Tomcat installation path:<\/p>\n
<\/code><\/pre>\n\n- cd \/opt\/tomcat<\/li>\n<\/ul>\n
<\/code><\/pre>\nGive the\u00a0tomcat<\/code>\u00a0group ownership over the entire installation directory:<\/p>\n<\/code><\/pre>\n\n- sudo chgrp -R tomcat \/opt\/tomcat<\/li>\n<\/ul>\n
<\/code><\/pre>\nNext, give the\u00a0tomcat<\/code>\u00a0group read access to the\u00a0conf<\/code>\u00a0directory and all of its contents, and execute access to the directory itself:<\/p>\n<\/code><\/pre>\n\n- sudo chmod -R g+r conf<\/li>\n
- sudo chmod g+x conf<\/li>\n<\/ul>\n
<\/code><\/pre>\nThen make the\u00a0tomcat<\/code>\u00a0user the owner of the\u00a0webapps<\/code>,\u00a0work<\/code>,\u00a0temp<\/code>, and\u00a0logs<\/code>\u00a0directories:<\/p>\n<\/code><\/pre>\n\n- sudo chown -R tomcat webapps\/ work\/ temp\/ logs\/<\/li>\n<\/ul>\n
<\/code><\/pre>\nNow that the proper permissions are set up, let’s set up a Systemd unit file.<\/p>\n
Install Systemd Unit File<\/h3>\n
Because we want to be able to run Tomcat as a service, we will set up a Tomcat Systemd unit file .<\/p>\n
Create and open the unit file by running this command:<\/p>\n
<\/code><\/pre>\n\n- sudo vi \/etc\/systemd\/system\/tomcat.service<\/li>\n<\/ul>\n
<\/code><\/pre>\nPaste in the following script. You may also want to modify the memory allocation settings that are specified in\u00a0CATALINA_OPTS<\/code>:<\/p>\n\/etc\/systemd\/system\/tomcat.service<\/div>\n
# Systemd unit file for tomcat\r\n[Unit]\r\nDescription=Apache Tomcat Web Application Container\r\nAfter=syslog.target network.target\r\n\r\n[Service]\r\nType=forking\r\n\r\nEnvironment=JAVA_HOME=\/usr\/lib\/jvm\/jre\r\nEnvironment=CATALINA_PID=\/opt\/tomcat\/temp\/tomcat.pid\r\nEnvironment=CATALINA_HOME=\/opt\/tomcat\r\nEnvironment=CATALINA_BASE=\/opt\/tomcat\r\nEnvironment='CATALINA_OPTS=-Xms512M<\/span> -Xmx1024M<\/span> -server -XX:+UseParallelGC'\r\nEnvironment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:\/dev\/.\/urandom'\r\n\r\nExecStart=\/opt\/tomcat\/bin\/startup.sh\r\nExecStop=\/bin\/kill -15 $MAINPID\r\n\r\nUser=tomcat\r\nGroup=tomcat\r\nUMask=0007\r\nRestartSec=10\r\nRestart=always\r\n\r\n[Install]\r\nWantedBy=multi-user.target\r\n<\/code><\/pre>\nSave and exit. This script tells the server to run the Tomcat service as the\u00a0tomcat<\/code>\u00a0user, with the settings specified.<\/p>\nNow reload Systemd to load the Tomcat unit file:<\/p>\n
<\/code><\/pre>\n\n- sudo systemctl daemon-reload<\/li>\n<\/ul>\n
<\/code><\/pre>\nNow you can start the Tomcat service with this\u00a0systemctl<\/code>\u00a0command:<\/p>\n<\/code><\/pre>\n\n- sudo systemctl start tomcat<\/li>\n<\/ul>\n
<\/code><\/pre>\nCheck that the service successfully started by typing:<\/p>\n
<\/code><\/pre>\n\n- sudo systemctl status tomcat<\/li>\n<\/ul>\n
<\/code><\/pre>\nIf you want to enable the Tomcat service, so it starts on server boot, run this command:<\/p>\n
<\/code><\/pre>\n\n- sudo systemctl enable tomcat<\/li>\n<\/ul>\n
<\/code><\/pre>\nTomcat is not completely set up yet, but you can access the default splash page by going to your domain or IP address followed by\u00a0:8080<\/code>\u00a0in a web browser:<\/p>\n<\/code><\/pre>\nOpen in web browser:<\/div>\n
http:\/\/server_IP_address<\/span>:8080\r\n<\/code><\/pre>\nYou will see the default Tomcat splash page, in addition to other information. Now we will go deeper into the installation of Tomcat.<\/p>\n
<\/div>\n
In order to use the manager webapp that comes with Tomcat, we must add a login to our Tomcat server. We will do this by editing the\u00a0tomcat-users.xml<\/code>\u00a0file:<\/p>\n<\/code><\/pre>\n\n- sudo vi \/opt\/tomcat\/conf\/tomcat-users.xml<\/li>\n<\/ul>\n
<\/code><\/pre>\nThis file is filled with comments which describe how to configure the file. You may want to delete all the comments between the following two lines, or you may leave them if you want to reference the examples:<\/p>\n
tomcat-users.xml excerpt<\/div>\n
<tomcat-users>\r\n...\r\n<\/tomcat-users>\r\n<\/code><\/pre>\nYou will want to add a user who can access the\u00a0manager-gui<\/code>\u00a0and\u00a0admin-gui<\/code>\u00a0(webapps that come with Tomcat). You can do so by defining a user similar to the example below. Be sure to change the username and password to something secure:<\/p>\ntomcat-users.xml \u2014 Admin User<\/div>\n
<tomcat-users>\r\n <user username=\"admin<\/span>\" password=\"password<\/span>\" roles=\"manager-gui,admin-gui\"\/>\r\n<\/tomcat-users>\r\n<\/code><\/pre>\nSave and quit the tomcat-users.xml file.<\/p>\n
By default, newer versions of Tomcat restrict access to the Manager and Host Manager apps to connections coming from the server itself. Since we are installing on a remote machine, you will probably want to remove or alter this restriction. To change the IP address restrictions on these, open the appropriate\u00a0context.xml<\/code>\u00a0files.<\/p>\nFor the Manager app, type:<\/p>\n
<\/code><\/pre>\n\n- sudo vi \/opt\/tomcat\/webapps\/manager\/META-INF\/context.xml<\/li>\n<\/ul>\n
<\/code><\/pre>\nFor the Host Manager app, type:<\/p>\n
<\/code><\/pre>\n\n- sudo vi \/opt\/tomcat\/webapps\/host-manager\/META-INF\/context.xml<\/li>\n<\/ul>\n
<\/code><\/pre>\nInside, comment out the IP address restriction to allow connections from anywhere. Alternatively, if you would like to allow access only to connections coming from your own IP address, you can add your public IP address to the list:<\/p>\n
context.xml files for Tomcat webapps<\/div>\n
<Context antiResourceLocking=\"false\" privileged=\"true\" >\r\n <!--<\/span><Valve className=\"org.apache.catalina.valves.RemoteAddrValve\"\r\n allow=\"127\\.\\d+\\.\\d+\\.\\d+|::1|0:0:0:0:0:0:0:1\" \/>--><\/span>\r\n<\/Context>\r\n<\/code><\/pre>\nSave and close the files when you are finished.<\/p>\n
To put our changes into effect, restart the Tomcat service:<\/p>\n
<\/code><\/pre>\n\n- sudo systemctl restart tomcat<\/li>\n<\/ul>\n
<\/code><\/pre>\n<\/div>\n
Access the Web Interface<\/h2>\n
Now that Tomcat is up and running, let’s access the web management interface in a web browser. You can do this by accessing the public IP address of the server, on port 8080:<\/p>\n
<\/code><\/pre>\nOpen in web browser:<\/div>\n
http:\/\/server_IP_address<\/span>:8080\r\n<\/code><\/pre>\nYou will see something like the following image:<\/p>\n
![\"Tomcat](\"https:\/\/assets.digitalocean.com\/articles\/tomcat8_centos\/splashscreen.png\")
<\/p>\n
As you can see, there are links to the admin webapps that we configured an admin user for.<\/p>\n
Let’s take a look at the Manager App, accessible via the link or\u00a0http:\/\/server_IP_address<\/span>:8080\/manager\/html<\/code>:<\/p>\n![\"Tomcat](\"https:\/\/assets.digitalocean.com\/articles\/tomcat8_centos\/manager.png\")
<\/p>\n
The Web Application Manager is used to manage your Java applications. You can Start, Stop, Reload, Deploy, and Undeploy here. You can also run some diagnostics on your apps (i.e. find memory leaks). Lastly, information about your server is available at the very bottom of this page.<\/p>\n
Now let’s take a look at the Host Manager, accessible via the link or\u00a0http:\/\/server_IP_address<\/span>:8080\/host-manager\/html\/<\/code>:<\/p>\n![\"Tomcat](\"https:\/\/assets.digitalocean.com\/articles\/tomcat8_centos\/host-manager.png\")
<\/p>\n
From the Virtual Host Manager page, you can add virtual hosts to serve your applications from.<\/p>\n
<\/div>\n
Conclusion<\/h2>\n
Your installation of Tomcat is complete! Your are now free to deploy your own Java web applications!<\/p>\n","protected":false},"excerpt":{"rendered":"
Introduction Apache Tomcat is a web server and servlet container that is used to serve Java applications. Tomcat is an open source implementation of the Java Servlet and JavaServer Pages technologies, released by the Apache Software Foundation. This tutorial covers the basic installation and some configuration of the latest release of Tomcat 8 on your […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-185","post","type-post","status-publish","format-standard","hentry","category-dicassolucoes"],"_links":{"self":[{"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=\/wp\/v2\/posts\/185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=185"}],"version-history":[{"count":1,"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=\/wp\/v2\/posts\/185\/revisions"}],"predecessor-version":[{"id":186,"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=\/wp\/v2\/posts\/185\/revisions\/186"}],"wp:attachment":[{"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xaxowareti.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}