--> Monitors in BIG IP LTM Provides the information about availability and performance of nodes and pool members.
--> There are two types of monitors used by BIG IP LTM.
--> Monitoring information is useful during troubleshooting and system maintenance.
--> Monitor objects once created and then assigned to one or more resource.
-Node Default Monitor
--> Can be configured under Local Traffic > Nodes > Default Monitor.
--> Whatever the monitor you assign here will be assigned to all nodes configured on the F5 LTM.
--> This Default Monitor only applied to the nodes that do not have any node-specific monitor.
--> ICMP Monitor is most commonly used default monitor.
Node Specific Monitor
--> Node Specific Monitor allows you to configure monitor specifically to each node.
--> Can be configured under Local Traffic > Nodes > Then select the node you want to configure health monitor > configuration > Health monitors > Node Specific.
Pool Monitor
--> The health monitor is assigned to the pools and all the members in the pool will be assigned with health monitor automatically.
--> Any new pool member added to Pool automatically assigned with health monitor configured under the pool.
--> Can be configured under Local Traffic > Pools > Then select the pool you want to configure health monitor > health monitor.
Member Specific Monitor
--> Pool Monitor can be overridden by using member specific monitor.
--> It is possible to have different health monitors for different pool members.
--> Can be configured under Local Traffic > Pools > Then select the pool you want to configure health monitor > Members> Pool Member > Change the configuration from Basic to Advanced > Health Monitors ( Member Specific).
--> Each and every monitor in BIG IP LTM is assigned with two values,
1) Timeout: the time until the monitor waits to make the resource available or unavailable.
2) Interval: For how many seconds each monitor test is going to run.
--> For example, if the interval is of 5 seconds and timeout is of 16 seconds means the monitor check runs for every 5 seconds and waits until 16 seconds to give the result whether it is unsuccessful or successful.
Ref: F5.com
MD.Kareemoddin
CCIE # 54759
--> There are two types of monitors used by BIG IP LTM.
--> Monitoring information is useful during troubleshooting and system maintenance.
--> Monitor objects once created and then assigned to one or more resource.
-Node Default Monitor
--> Can be configured under Local Traffic > Nodes > Default Monitor.
--> Whatever the monitor you assign here will be assigned to all nodes configured on the F5 LTM.
--> This Default Monitor only applied to the nodes that do not have any node-specific monitor.
--> ICMP Monitor is most commonly used default monitor.
Node Specific Monitor
--> Node Specific Monitor allows you to configure monitor specifically to each node.
--> Can be configured under Local Traffic > Nodes > Then select the node you want to configure health monitor > configuration > Health monitors > Node Specific.
Pool Monitor
--> The health monitor is assigned to the pools and all the members in the pool will be assigned with health monitor automatically.
--> Any new pool member added to Pool automatically assigned with health monitor configured under the pool.
--> Can be configured under Local Traffic > Pools > Then select the pool you want to configure health monitor > health monitor.
Member Specific Monitor
--> Pool Monitor can be overridden by using member specific monitor.
--> It is possible to have different health monitors for different pool members.
--> Can be configured under Local Traffic > Pools > Then select the pool you want to configure health monitor > Members> Pool Member > Change the configuration from Basic to Advanced > Health Monitors ( Member Specific).
1) Timeout: the time until the monitor waits to make the resource available or unavailable.
2) Interval: For how many seconds each monitor test is going to run.
--> For example, if the interval is of 5 seconds and timeout is of 16 seconds means the monitor check runs for every 5 seconds and waits until 16 seconds to give the result whether it is unsuccessful or successful.
Ref: F5.com
MD.Kareemoddin
CCIE # 54759
0 Comments