yum -y groupinstall 'PostgreSQL Database Server'<\/pre>\nNext, start up the data base:<\/p>\n
service postgresql initdb\r\nservice postgresql start\r\n<\/pre>\nWith the default installation of Postgres on RedHat, a user named postgres is created who pretty much does everything. We use him to configure the database.<\/p>\n
su - postgres\r\ncreated dcmdb\r\ncreateuser -P -s -e dcnmuser\r\n<\/pre>\n5.1 Postgres Config<\/strong><\/p>\nPostgres on RHEL6.5 doesn’t accept network connections by default. \u00a0That makes it more secure. \u00a0To enable our App server to connect to it, we need to change two files.<\/p>\n
\/var\/lib\/pgsql\/data\/postgresql.conf<\/strong><\/p>\nModify this file by adding the IP address for it to listen on. \u00a0By default its set to only listen for connections on ‘localhost’.
\nChange this line:<\/p>\n
listen_addresses = 'localhost' # what IP address(es) to listen on;\r\n<\/pre>\nTo look like this:<\/p>\n
listen_addresses = '10.1.1.18,127.0.0.1'\r\n<\/pre>\nOr you can just make it ‘*’ (that says: listen on every interface). In my case this works because my Database servers IP address is 10.1.1.18, so I’m listening on eth0 and the local interface.<\/p>\n
\/var\/lib\/pgsql\/data\/pg_hba.conf<\/strong><\/p>\nModify this file by adding in a line for our DCNM user. \u00a0At the bottom of the file I added this line:<\/p>\n
host \u00a0 \u00a0dcmdb \u00a0 \u00a0 \u00a0 dcnmuser \u00a0 \u00a010.1.1.17\/32 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0md5\r\n<\/pre>\nOnce those two files are changed, restart postgres.<\/p>\n
service postgresql restart\r\n<\/pre>\nNow you should be ready to rock the Database server. We’ll check it in a minute. Now lets go over to the app server.<\/p>\n
6. \u00a0Configure the App Server<\/strong><\/p>\nYou need to login via either VNC or on the console for XWindows. \u00a0VNC is probably the easiest way to see it remote.<\/p>\n
yum -y install tigervnc-server<\/pre>\nStart the VNC server and then you can VNC into it.<\/p>\n
service vncserver start<\/pre>\nYou’ll then need to copy the dcmn installer that you downloaded from Cisco in step 1 as well as the properties file that you downloaded. \u00a0I put mine in the \/tmp directory. \u00a0Change this to be an executable by running:<\/p>\n
chmod 755 \/tmp\/dcnm-installer*<\/pre>\n6.1 Modify the installer.properties<\/strong><\/p>\nThe dcnm-silent-installer-properties file is a zip file. \u00a0When expanded it has a directory called Postgres+Linux. \u00a0In this directory is the file we will use for our installation. \u00a0For the most part, I left it alone. \u00a0I just changed a few of the entries:<\/p>\n
USE_EXISTING_DB=FALSE # ! make sure you add this!\r\n#USE_EXISTING_DB=TRUE # ! comment this out!\r\n\r\n#------------Use Existing Postgres--------------\r\nDCNM_DB_URL=jdbc\\:postgresql\\:\/\/10.1.1.18\\:5432\/dcmdb\r\nDCNM_DB_NAME=dcmdb\r\nSELECTED_DATABASE=postgresql\r\nDCNM_DB_USERNAME=dcnmuser\r\nDCNM_DB_USER_PASSWORD=Cisco.123\r\n<\/pre>\n <\/p>\n
With that, we are ready to run!<\/p>\n
7. Install DCNM<\/strong><\/p>\nOn the App server, we finally run:<\/p>\n
dcnm-installer-x64-linux.6.3.2.bin -i silent -f \/tmp\/installer.properties<\/pre>\nIf all goes well, you should be able to open a browser to dcnm-app and see the Cisco login screen.<\/p>\n
Hurray!<\/p>\n","protected":false},"excerpt":{"rendered":"
DCNM is Cisco’s GUI for managing MDS and Nexus products. \u00a0It’s pretty great for getting a visual of how things are configured and performing. I thought I would go into a little more detail than I’ve seen posted online about installing DCNM on RedHat Linux. \u00a0In this example we’ll be installing two servers. \u00a0One server…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[990,920,1],"tags":[380,382,381],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/2450"}],"collection":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2450"}],"version-history":[{"count":2,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/2450\/revisions"}],"predecessor-version":[{"id":2458,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/2450\/revisions\/2458"}],"wp:attachment":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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